| Author | Message | ||
| david handa (Davehanda)
Intermediate Member Username: Davehanda Post Number: 1110 Registered: 5-2001 |
As a final resolution to this lengthy thread; I replaced my motorized antenna (old one stuck in the extended position) and amazingly, the static problems on the AM band went away! Problem fixed. So I still have non resistor plugs (spec'd in manual) and (original) non resistor extenders in my 328 with no problems. | ||
| Peter Connolly (Mondial_32_aus)
Junior Member Username: Mondial_32_aus Post Number: 96 Registered: 8-2001 |
I use the NGK iridium resistive plugs with 0 Ohm red extenders on my Mon 3.2 and they seem ok. I have no scientific way of testng but so far so good. PC | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 238 Registered: 5-2001 |
Okay, so 45 posts later, we have some consensus. I CAN use resistor plugs, and it will in all likelihood, fix my radio interference problem, like it did in my 308. Thanks Verell and James! Now, which ones to use? I think I will try the Iridium ones.... | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 387 Registered: 5-2001 |
I second Jame's recommendation. Resistor plugs may help your radio problem, & if they run ok , keep them. The combination that s/b of concern is resistor extenders w/resistor plugs. This most likely creates too much noise in the radio & probably under-damps the spark waveform letting it ring. (Hmm, isn't that what MSD claims is goodness?) BTW, the US spec 308 manuals I've seen recommend non-resistor plugs, yet folklore is that the us spec cars generally came with black non-resistor extenders & resistor plugs. | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 38 Registered: 7-2002 |
David, I'm looking into some leads on the extender issue. It's not worth throwing out additional hypothesis until I can uncover the truth- if it even can be uncovered at this point! It looks like everyone realizes that there is a piece of this puzzle we are not aware of. What's clear is that some red extenders have resistance, others do not. The trick is to find out if this change was incorporated by the factory, or added as an aftermarket change. One of us will come up with the answer- and that will be cool! My suggestion to you is to install the resistor spark plugs, and see what difference it makes for you. Your certainly not going to hurt the ignition system by doing so. I would not change out those extenders becuase they are most likely stock and performing as they are supposed to. Happy Driving! JC | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 236 Registered: 5-2001 |
Okay, I pulled a second extender out of my 87 328. It (again) looks identical to the ones in James Christian's pictures. No part numbers or manufacturer name imprinted on them. I believe they are original to the car. The measured resistance is .3 ohm, so essentially zero again. So, will I have any problem going to a resistor plug? Obviously, my car came with non-resistor extenders, and the manual states a non-resistor plug. I put resistor plugs in my carb 308 w/o problems.... | ||
| James Selevan (Jselevan)
Junior Member Username: Jselevan Post Number: 157 Registered: 6-2002 |
David - heard a good one. Kid asked his engineer father, "What is the difference between a mechanical and civil engineer?" Dad replied, "Mechanical engineers make weapons. Civil engineers make targets." Jim S. | ||
| David Feinberg (Fastradio2)
Junior Member Username: Fastradio2 Post Number: 163 Registered: 4-2002 |
Jim...Thank you. Old? No, Just over-educated...and under-paid. An E.E. and M.E., similar to yourself....with a passion to make sense out of a seemingly non-sensical automobiles. If I could only figure out why I own and keep buying these F-cars... Turned 47 a few months back, just got started with cars young. Broke my teeth, so to speak figuring out the infamous Spica injection system, as used on the 70's Alfas. Anyone out there need a technical source for those systems, drop me a note. David | ||
| James Selevan (Jselevan)
Junior Member Username: Jselevan Post Number: 156 Registered: 6-2002 |
David - as you have previously demonstrated, you are wise beyond your years (I don't know how old you are, but you must be old to have that much wisdom). Verell - Nice summary. I reviewed the schematics, and as you point out, no ground termination for the sparkplugs, although, they really are open circuited until discharge. They do show shielding, however. Part of my confusion is that my TR, with red extenders, has a straight conductor - no resistor. These were factory installed. Nonetheless, your entry, along with David's, seems to organize the myriad opinion posted on this thread. Thanks for the effort. Jim S. | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 382 Registered: 5-2001 |
James: re:"Most telling would be the schematic diagram. I have reviewed the schematics on my sample. My Boxer does not show resistance going to the sparkplugs. Nor does the Dino. No resistance on the TR. Three F-cars, no resistance." I understand your logic, BUT you're wrong in assuming that they would be shown. I've never seen a automotive schematic that used the resistor symbol for ignition wires. Neither do they show the plugs as having internal resistors. Yet, in most cases both the wires and plugs were both resistance types. Just seems to be common practice to not show them. Note also that neither the Euro, nor the US 308 schematics show the extenders at all, much less show them with & W/O an internal resistor symbol. Neither shows resistors in either the wires or the plugs. They don't even show the plug's as having a spark gap to ground, or even a ground connection but it's there also. You also seem to be ignoring or dismissing the factual empirical evidence that's unarguably showing that SOME 308/328 RED EXTENDERS HAVE BUILT-IN RESISTORS. There is also emperical evidence that SOME Mondial & at least 1 328 have red extendors do not have an internal resistor. The empiricaly demonstrated facts previously presented are: 1) The black cylinder in my dissected cylender is definitely a resistor. It measures as one & has the expected construction. 2)My original red extenders: a) Definitely have a resistor: The black cylender in my dissected original extender is definitely a resistor, and measures ~4K Ohms. b) Have a mfg. logo. 3) Reproduction red extendsrs (both mine & Peter's) a)both of ours measure ~2K Ohms, & in my case I measured multiple ones. b)the label on my package of repro red extenders clearly states: Ferrari, the F* part #, and also "CON RESISTORE" which translates as 'with resistor'. c) both of ours do NOT have any mfg's logo or other markings. d) both of ours have brass tips. It's a reasonable hypothesis that they both came from the same source. 4) The red extenders from both Peter C's 3.2 Mondail's, and Dave Handa's 328 GTS. a) Have no significant internal resistance. b) Peter C's do not have any mfg. logo or other markings. (Dave hasn't said whether his have any logo or markings.) 5) My black 308 extenders from T.Rutlands: a)Measure ~zero resistance. b) Have the same logo as my original red extenders. FOLKLORE/HEARSAY: 1) Magoo's statements about red & black being with & w/o a resistor respectively. 2) I was told the same a couple of years ago when some of my extenders burned thru by: a)Ted & T.Rutlands b)Multiple FerrariList members. 3) Every previous post about 308/328 red resistors in the FerrariChat archives says they do have resistors. They also say that use non-resistor plugs w/red extenders & resistor plugs w/black extenders. Also, every post about 308 black extenders say they do not have a resistor. US 308s came with black extenders & resistor plugs, while Euro 308s came w/red extenders & non-resistor plugs. The evidence leads to the conclusion is there's something we don't know about red extender variations and when they were intended to be used. I don't think we can go further without additional info. | ||
| David Feinberg (Fastradio2)
Junior Member Username: Fastradio2 Post Number: 162 Registered: 4-2002 |
Jim and all, Very interesting post, observations and conclusions. Brings back a few confusing memories as to what is correct, OE, etc. In my 25 years of owning numerous Ferraris, and servicing many more...I have formed few a simple (but tried and true) conclusions as to resistor, non-resistor... Assumptions: Wiring diagrams and shop manuals are not without errors and, or omissions.... With that thought in mind: 1)Virtually all Ferraris came with "radio suppression/resistor wiring" 2)If the factory specified plug is of a non-resistor type, then a resitive end should be used. 3)If the factory specified plug is of a resistor type, then a non-resitive end should be used. 4)At some point in time, before all the repro stuff ended up on the market, the colors of the "plug stand-offs" meant something. 5)Typical "real" resistive red stand-offs have about 2K ohms. (308/328 applications) 6)Typical "real" resistive black stand-offs have about 4.7K ohms.(BB/TR applications) Hope this sheads a bit of clarity... David | ||
| James Selevan (Jselevan)
Junior Member Username: Jselevan Post Number: 155 Registered: 6-2002 |
Verell, I agree with your assessment. Most on FerrariChat are sophisticated enough to measure Ohms. However, I am a bit confused over the different resistances found in red extenders, for example. Magoo suggests that red extenders are suppose to be resistive. David's measurements find red extenders with no resistance. Peter mentions 2000 Ohms for red extenders: Black with zero resistance. Most telling would be the schematic diagram. I have reviewed the schematics on my sample. My Boxer does not show resistance going to the sparkplugs. Nor does the Dino. No resistance on the TR. Three F-cars, no resistance. The high voltage wires do show shielding to ground on the schematic. "Some circumstantial evidence is compelling, like when you find a trout in your milk." Jim S. | ||
| '75 308 GT4 (Peter)
Intermediate Member Username: Peter Post Number: 2044 Registered: 12-2000 |
My measurements were taken from the end of the plastic, to the end of the connector. My ohm measurements were taken on an "old-school" analogue multimeter (and was accurately set by touching the two leads and adjusting the needle to point to zero, then I took my measurements). | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 381 Registered: 5-2001 |
James, re:"Could this be an artifact of various individuals measuring different things with different meters?" I don't think so. We're seeing with very gross differences here. Even a cheap analog ohm-meter can measure to 2 digit accuracy, & there's only the tip & sparkplug connector to measure between. I would expect at most a 25-100 Ohm difference in readings of ~2,000 Ohms between two different people's meters/techniques. Provided of course that they have a basic understanding of how to setup /read their meter. We're seeing real differences in the parts being measured. I've got an EE background, so I know I've got good readings. James' photo shows that his setup is exactly the same as mine & his meter's setup properly. Dave says he's not too familiar with his meter, but Unless it's got a hidden 'KOhm' or MOhmicon or setting that he's overlooked, I suspect he's getting what he says he is. | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 380 Registered: 5-2001 |
FYI: I included the metal tip in the measurements I posted to this thread on Sunday, September 22, 2002 - 8:50 pm. Ie: Measured from the top of the metal tip to the bottom of the plastic. | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 230 Registered: 5-2001 |
Well, I will check for other markings on the extenders this weekend and report back. My comment on measuring the metal tip, had to do with my length measurement, not the resistance... Can anyone else provide a data point by taking out their 328 extender and measuring length, markings and resistance? | ||
| James Selevan (Jselevan)
Junior Member Username: Jselevan Post Number: 149 Registered: 6-2002 |
David - if your extenders are the ones that were installed at the factory, then I would not replace them. That they read .4 ohms suggests that they were intended to be non-resistive. Four-tenths of an ohm is zero for this discussion. A bad resistor goes from nominal value to something greater (most likely open circuit, i.e., infinite resistance). Resistors do not become more conductive upon failure. Thus, your findings suggest that they were always meant to be zero ohms. I find the various color codes and resistance findings a bit confusing, and call upon someone to interpret a consistent pattern. Could this be an artifact of various individuals measuring different things with different meters? Jim S. | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 229 Registered: 5-2001 |
So if I am reading .4 ohm, then should I replace all my extenders, as they must be "bad"? | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 379 Registered: 5-2001 |
Dave, Based on reported measurements, the red extenders should measure between 2,000 & 4,000 Ohms. Since the newer repros measured 2K Ohms, & my old ones have enough tarnish on the resistor that I had to to polish it off of it to get the 4K reading. I'd tend to go with 2K Ohms. Peter's extenders from Superformance measured 2K also. The resistance between the top & bottom of the metal tip is negligable, so low it can be considered zero in the context of ignition resistance. | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 228 Registered: 5-2001 |
Well, perhaps I have the wrong extenders, I will look at them more closely this weekend. BTW, I included the metal tip in my measurement, if that makes any difference. Also, what should be the correct resistance with a red extender? Thanks for everyones comments. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1079 Registered: 1-2001 |
Peter C. -- Does your Mondial 3.2 spec a conventional resistor plug in the OM? Dave -- Although I'd still say I've not seen a DR NGK VX PN available on the US websites, it seems they do exist: http://www.ricoland.co.jp/data/ngk-suzuki.htm so my bad (but I still think you might possibly have the wrong extenders for a 328). | ||
| Peter Connolly (Mondial_32_aus)
Junior Member Username: Mondial_32_aus Post Number: 94 Registered: 8-2001 |
I have NGK Iridium Resistor plugs fitted to my Mondial 3.2. They are part # NGK Iridium DR8EIX D = Thread 12 mm R = Resistor Type (5K) 8 = Heat (2 Hot - 11 Cold) E = 19mm Thread (3/4) IX= High Performance Iridium PC | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1077 Registered: 1-2001 |
Dave -- you may have a little difficulty getting a resistor spark plug -- at least in the NGK VX parts numbers I've never seen a DR-series plug so you may have to keep investigating the extender issue. (Can't a few more 328 Owners measure an extender or two resistance for comparision.) | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 375 Registered: 5-2001 |
EXTENDER LENGTHS Black 99mm Repro Red 101mm Orig. Red 100mm The lengths within an extender type varied by about 0.015" to 0.020". BTW, the tip on the reproduction red extender is brass, not chrome. Regarding the Mondiall posts, I don't know what to say about the zero resistance red extenders. Maybe it just proves what all Mondial owner's claim: "Mondials are different from other Ferraris." (heheheh...) Seriously tho, No matter it's color, if your extender is a zero resistance extender, then you probably need to use a resistor plug to minimize radio interference. The resistor terminates the ignition wire so that it dampens the waveform, otherwise the waveform will 'ring' for a while after the initial impulse.(Yes, I do have both a BSEE & a HAM ticket.) | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 226 Registered: 5-2001 |
Okay, I checked, and my 87 328 GTS has red extenders exactly like the ones on the far right of Verell's picture, about 4.25" or 108 mm long. I measured .4 ohms on my Fluke 26 (true rms) meter. Not knowing what this value is, does that mean no resistance??? As I get a similar reading when I touch the two test leads together. But back to my original question, can I put resistor plugs on to get rid of the annoying rf interference I get on my AM radio? I don't wish to stick a filter or choke on, as I have never had any of those work in the past, and the radio is one of those $500 Alpine units, that you would think has proper filtering and shielding (but maybe not...) | ||
| Peter Connolly (Mondial_32_aus)
Junior Member Username: Mondial_32_aus Post Number: 93 Registered: 8-2001 |
The red plug extenders on my Mondial 3.2 are all 0 Ohms, I guess that they are incorrect then? Perhaps they were intended for an Alfa or some other car? They certainly have no manufacturer codes on them. I am running NGK Iridium Resister Cold spark plugs too. Now that I have a better understanding of this issue I guess that I had better take a look at the plug cables too and see what resistance they have. I might try a different multimeter too, maybe something wrong with my one? PC | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1075 Registered: 1-2001 |
Peter -- you've already got the TR info (unless you're asking something else) -- D-series NGK (12mm, non-resistor, stud-topped) spark plugs and non-resistive 75mm extenders. | ||
| '75 308 GT4 (Peter)
Intermediate Member Username: Peter Post Number: 2035 Registered: 12-2000 |
This is interesting, it seems all the four-valve engines (328's and TR's) use the smaller spark plugs and yet the 328 uses these longer extensions... Is this true? Dave and Steve, what types are used in your engines? As for the top connection, it is the same style and I'll check later to see if its the same thread as my bigger plugs (I'm sure it is). | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1074 Registered: 1-2001 |
Peter -- Thanks for the 308 extender length information. The TR extender may also be slightly smaller in diameter too (where it goes over the top of the spark plug). Yes, the top connection of the TR spark plug is a very similar design, but the whole TR spark plug is a little bit smaller (being an M12 tpye rather than M14 thread) so I don't know if it's identical. On the TR spark plug the top contact is a threaded M4 x 0.7P stud about 7~8 mm long, but there's nothing to unscrew -- the screw-on adapter to the more (US) conventional clip-on style isn't included with the spark plug (NGK D-series EVX). | ||
| '75 308 GT4 (Peter)
Intermediate Member Username: Peter Post Number: 2034 Registered: 12-2000 |
Steve, what type of connection does the TR extender use on the plug side? The same as the 308 types where you must un-screw the end off of the spark plug? Both my red and black ones measure 102mm long. And I must correct myself, I posted those last messages too late at night, with my brain half-awake. The red extenders I have have brass connectors, not chrome. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1073 Registered: 1-2001 |
Verell -- Can you measure the overall length of the black 308 extender? Here's the TR Extender 124792:  It's non-resistive (~1.7 ohm) and 75mm long (and seems a bit shorter than the 308 extender IIRC -- but that's what I want to check). | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 372 Registered: 5-2001 |
Peter, The cable should measure ~1000 Ohms/foot. Someone posted their readings a while back, You can search the Tech Q&A archives. I've never heard of Mondial red extenders being any different from the 308/328 red ones. BTW, the all the metal in my extenders is chrome, not brass. Guess it just doesn't show up too well in the photo. The logo could be MAfER, It's an elongated narrow vertical double curve with a very small horizontal hash mark in the middle. Back to the topic, When I asked about using resistor plugs with my 308's red extenders, the answer came back a resounding 'no'. The consensus was: VALID EXTENDER/PLUG COMBINATIONS --------------------------------- EXTENDER/PLUG TYPE Black / Resistor Plug Red / Non-Resistor Plug However, my car came with resistor plugs & I'm still running them as I keep forgetting to pick non-resistor ones when I'm in a parts store. At this point, I've put ~9,000 miles on the car. Of course, this illegal combination may be why my red extenders sparked-thru & failed. | ||
| Peter Connolly (Mondial_32_aus)
Junior Member Username: Mondial_32_aus Post Number: 91 Registered: 8-2001 |
Ummm, red ones are all ~2000 ohms? I was just about to go to bed and this post got me out to the garage to have a look at my 87 Mondial 3.2 plug ends. They are all Red ones with no manufacturer markings on them and they without exception read 0 Ohms on my Fluke multimeter, I even manually ranged it and there is nothing on 4 out of 8 so far. My leads are BLUE "Magnecor High Performance Ignition Cable Silicone Metalic Inductive Suppressed Conductor" How do I check the ignition cables? What Ohms would you look for? I think my plug extenders, leads and rotors have been on the car for at least 20,000 klm? PC | ||
| '75 308 GT4 (Peter)
Intermediate Member Username: Peter Post Number: 2030 Registered: 12-2000 |
The red extenders I bought from Superformance, are repro's (no logo's on 'em) and rated anywhere between 1925, to 1975 ohms. Oh ya, the terminal connection (wire side, not plug side), is chrome, unlike yours (Verell), which looks to me like brass in your photo. According to my (poor) eyesight, I always thought the logo (on the black ones) was: "Mafer" not "Ma/er"...  | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 36 Registered: 7-2002 |
David, Now that we have completely strayed from your original question, can you give us an update? Don't forget that some noise picked up on your radio is through the electrical system directly, other noise is definitely RF. Noise on the cars electrical system can be cleared from a radio through the use of a filter you can buy from most stereo installers, even Radio Shack. The filters connect in line with the positive wire to the radio, and then to ground. They consist of a choke and a cap, and usually work very well. If the noise being generated is RF, you will have to purchase a better radio- which sometimes works, or go to the source of the problem- your ignition system. | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 35 Registered: 7-2002 |
Verell, What a cool cut-up! Thanks for that! Now, as for your question: I could not find any marking on the extender I measured, with exception of a small 2-3mm mark on one side. I could not tell if this was a mold cut-away point, or a small number in a circular boarder. Anyway, it was very-very small, and my eyes are pretty good! Could it be that some cars were specified with resistive wire, and therefor were shipped without resistors in the extenders? Is is possible that other cars were specified with non-resistive wire, and extenders with resistors? It looks like I'm going to have to defer this question to my buddy Mark Spencer at Veloce Speedesign. I am convinced, that he does indeed, without question, know it all! I'll let you know what I find out. | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 370 Registered: 5-2001 |
AUTOPSY REPORT ON 1 OF MY CAR'S ORIGINAL RED EXTENDERS Here's a dissected red extender:  The dark black cylinder (2nd from left) is a resistor. The rivit on the end of the spring presses the resistor against the spark plug end contact. The spring makes contact with the extender's wire end contact. The paper sleeve keeps the resistor/rivit/spring stack aligned. This resistor has tarnished silver plated ends. Initially it measured 8K to 10K Ohms. After I polished the ends with a cloth, It consistently easured 4,029 Ohms. I suspect that 4K is the resistance of this extender type. The silver tarnish breaks down under a few hundred volts, so this extender was probably still functinal. However, the tarnish was enough to block the low Ohm meter voltage. Thus, like the rest of my original extenders, this one read 'open' when I measured it. Bottom line: Your Ohm meter can't tell you the full story when high voltage parts are involved. | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 367 Registered: 5-2001 |
James, That's an interesting data point. BTW, does the extender have a mfg's logo on it? Here's photo documentation of the results of my measurements: Three samples, My car's original extender is the dingy red one on the right. Both it & the black one have the logo MA/ER inside a border molded into them. The red middle insulator is the aftermarket 328 one w/o a logo.  The Black Extender is a short circuit(1 of 4 I measured):  The aftermarket 328 red Extender measures ~2K ohms (1 of 2 I measured):  And 6 of my car's original extenders measure as open circuits!!!:  Will the real red extender please come forward.... At this point we have evidence of 3 different flavors of red extenders! It looks like you better ohm it before you buy!! | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 33 Registered: 7-2002 |
 | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 364 Registered: 5-2001 |
NOT ALL RED EXTENDERS ARE THE SAME!! I recently bought a set of red extenders because a couple of my '82 Euro 308 GTS QV's extenders had arc'd thru. I also have 4 black extenders I was going to use because I couldn't find a set of the red ones. The 4 black ones measure 0 ohms eac. The aftermarket red ones all measure 2,000 +/- 50 ohms. The bag was labled 'con resistore'& I was told they were the ones for a 328 when I bought them. WEIRDNESS: I measured 6 of the red ones that came in my car, and they all measured open! What's really puzzeling is that the car ran fine once I replaced the 2 that had arc'd thru. I just replaced the other 4 because there were some faint white corona marks on the inside, but no real blackening or a pinhole. I could see some of them measuring open, but I wouldn't expect all 6 to measure open. I'm wondering if there's a spark gap inside my original red ones. I'm going to see if I can find the arc'd-thru ones & perform an autopsy. | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 32 Registered: 7-2002 |
Peter, Sure would like to see a digital photo of the assembly, or possibly something in a manual. Again, my set was stock and there were no resistors. Is it possible there was a change on the latest version of the wires for the late model 328's? Anyway, it really doesn't matter. The Cavis wire is resistive by design. According to the new 1-foot section I have in front of me, and my Fluke 87, the wire measures approximately 440 Ohms/ foot. | ||
| '75 308 GT4 (Peter)
Intermediate Member Username: Peter Post Number: 2023 Registered: 12-2000 |
FYI: -Red extenders have about 2000 ohms resistance -Black extenders have 0 ohms resistance | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 221 Registered: 5-2001 |
To be honest, I have not pulled a wire to see what type extenders are on the car. It is bone stock, other than a K&N filter :-) I thought all 328s had the red extenders? Dave | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 30 Registered: 7-2002 |
Magoo, I sure would like to see some proof that there are resistors in them thar extenders. No, really, I'm curious. I've heard a number of folks talk about that, but there were no resistors in mine. The Cavis wire was terminated neatly at both ends with the appropriate metal connector. The connector in the "Extender" end is slightly angled, but no resistor. Have you seen this in any of the service manuals? Just curious... | ||
| magoo (Magoo)
Advanced Member Username: Magoo Post Number: 3142 Registered: 2-2001 |
The blk. extenders, older style, do not contain resistors. The red, later style extenders, are supposed to have internal resistors. | ||
| James Christian (Jimc)
New member Username: Jimc Post Number: 27 Registered: 7-2002 |
David, I ran the stock Cavis wire, no noise. I then rebuilt my wire set after 20k because the stock Cavis wire went bad. The center conductor, which is coiled down the center of the cable, tends to turn to carbon over time- causing high resistance in the wires and all the associated problems that arise because of this. I rebuilt the set using stock Cavis wire, i.e. new wire and new wire ends, original red jacket and red terminations. I've run the NGK plugs and never had any AM problems- for what it's worth. Of course, it's difficult to HEAR the radio over the engine ;) Also, some say there are resistors in the plug-end terminators (extenders). I sure didn't see them in my set! '89 328gts. Are you sure your wires aren't shot? I'm looking forward to reading other's comments on this topic! | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1061 Registered: 1-2001 |
Are you running the stock wires and stock extenders? | ||
| david handa (Davehanda)
Junior Member Username: Davehanda Post Number: 220 Registered: 5-2001 |
I just had a major service done, and the mechanic installed NGK EVX plugs (standard type). I am getting nothing but static on the AM band of my radio. I need it to get border crossing wait time updates when going to Canada. I solved the problem in my 308 by going to resistor plugs. The manual states the use of non-resistor, anyone know for sure if resistors are okay? |