| Author | Message | ||
| Charles I Claussen (Atlantaman)
Junior Member Username: Atlantaman Post Number: 140 Registered: 3-2002 |
By the way--they are ADDA model ad1212hx-a71gl ( 12v/ .44 amp)--cost me 14.50 each | ||
| Charles I Claussen (Atlantaman)
Junior Member Username: Atlantaman Post Number: 139 Registered: 3-2002 |
I just installed a pair of 12v fans on my coolers. Got them at a place called skycraft in orlando--4.5" diameter 1.0" thick --virtually silent and really strong. Pic attached.. PS I relocated and installed 2 coolers in front airdam.  | ||
| Dave Goldman (Dave328)
Junior Member Username: Dave328 Post Number: 136 Registered: 11-2002 |
Hmmmm, thanks for the link Paul. I think that may just work. There may be enough room to mount it as a "puller" on the engine bay side of the cooler. Dave | ||
| Paul Sloan (Sloan83qv)
Member Username: Sloan83qv Post Number: 557 Registered: 3-2001 |
Here a link to boaters world for the 3" "in line blower" if link does not work just go to www.boaterworld.com and plug in "in line blower" in there search section. http://www.boatersworld.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&catalogId=10051&langId=-1&productId=358879 | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1112 Registered: 5-2001 |
Paul, can you suggest a website? | ||
| Paul Sloan (Sloan83qv)
Member Username: Sloan83qv Post Number: 556 Registered: 3-2001 |
Try a duct fan for either boats to ventilate engine compartment availble at all boat supply house in 3" (135 cfm) or 4" (245 cfm) or a brake duct fan availible at most race supply outlets, either should fit in duct work for oil cooler and run on 12 volts. | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1111 Registered: 5-2001 |
My idea is based on Dave's point. On the track I never sustain a continuous speed sufficient to continuously blow high air flow thru to the cooler. Lots of braking and much slower turns. I'll rarely have a big enough stretch to run fast long enough to cool things off. With a fan I can pull lots of air thru it regardless of the speed I am traveling. I really think this will work. If not, I haven't lost anything but a little time very little money. Who knows, maybe I'll get cought in a big traffic jam in Aug and really need it. | ||
| Andy Falsetta (Tuttebenne)
Junior Member Username: Tuttebenne Post Number: 93 Registered: 3-2003 |
Its surprising that the 328s have this problem and the 308s don't. Is there something in the way the air ducting was done on the 328s? One thing I never had trouble with during a minimum of 1,000 miles of track driving with my 77 B was high oil temperature. It actually took two or three laps to get the oil temp gauge to move. Once it did, it would run at 210 all day long. | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 650 Registered: 5-2001 |
LARGER INTAKE SCOOP? How about making a larger scoop to enlarge the cross-sectional area of the intake. Ram effect would then increase the velocity of the air thru the oil cooler. Of course, before you do anything, make sure the oil cooler is clean. A surprising amount of dust & other debris can build up on it in no time. | ||
| Ben Millermon (Brainsboy)
Member Username: Brainsboy Post Number: 256 Registered: 5-2001 |
Just a thought. Have seen those crapy electric superchargers for imports sold on ebay claiming 4% increased power. Its a 3" round inline high speed fan made to connect to a throttle body. Im not sure what the cfm is, but because of its design it might work perfect to fit inline between the vent and the oil cooler. | ||
| Dave Goldman (Dave328)
Junior Member Username: Dave328 Post Number: 129 Registered: 11-2002 |
Hans, I think you are right on with the airflow theory, however, I think the problem is lack of flow on the track. You don't have a sustained flow of air. During a hot lap, you are braking,turning,accellerating,braking,etc. You aren't getting the constant flow as you would on the HWY. Dave | ||
| Lawrence Coppari (Lawrence)
Member Username: Lawrence Post Number: 580 Registered: 4-2002 |
Agree with Hans. I don't think it'll do much at high speed but improve cooling at low or no speed. | ||
| Hans E. Hansen (4re_gt4)
Intermediate Member Username: 4re_gt4 Post Number: 1182 Registered: 4-2002 |
I'm not familiar with the air flow thru the cooler of the GTB/S series, but I wonder if a fan would do any good. If you are at speed, chances are that natural airflow may be higher than what could be produced by a fan. The fan may end up being a restriction to natural airflow. Of course at standstill, a fan would help tremendously. | ||
| Lawrence Coppari (Lawrence)
Member Username: Lawrence Post Number: 579 Registered: 4-2002 |
Southeast Region used to have a summer track event at Rockingham, NC in late June. It was always very hot there. I have a 328. The oil temperature would rise with sustained high rpms. I've seen mine at 250 F. Whenever I reached this temperature, I'd do a lower rpm lap to cool it off. I think the high oil temperatures on the track are typical for this vehicle and the amount of cooling it has. My oil temperature remains at 210 on the highway in hot weather. Jeff R. is right. I now use a Porsche for track events. It has 140K on it. I have reduced my lap times with it by learning how to drive it better rather than beating it to death in hot weather at Road Atlanta. | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1108 Registered: 5-2001 |
I think I have found something that will fit my 308 (not sure about 328s). Like I said, I'll install it and test it and let everyone know how it goes. | ||
| Dave Goldman (Dave328)
Junior Member Username: Dave328 Post Number: 127 Registered: 11-2002 |
I too have experienced high oil temps after a few "hot" laps in the 328. The temp is perfectly normal under normal driving conditions, even sustained HIGH cruising speeds on the highway. I think a fan would make a big difference however the problem I ran into is the limited space given to work with compared to the sizes of fans available. If anybody does come across something that will fit please pass it on. Dave | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1106 Registered: 5-2001 |
I think that would be a good idea too. I thought I would try the fan thing just to see, since I would be installing it and saving $$. If it doesn't work then we will all know not to go that way and I'll put in an oil cooler up front. | ||
| jeff ryerson (Atheyg)
Junior Member Username: Atheyg Post Number: 221 Registered: 8-2002 |
Running it hard is probably just what is causing it, the next step I would take is adding a larger additional cooler in the front or somewhere where there is good airflow , Mocal makes aluminum racing oil coolers in many various configs and sizes and is good quality | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1105 Registered: 5-2001 |
I changed it that afternoon. By the way, The oil pressure was normal at 6000 rpm (by the book). Would the oil pump still be an issue with good psi? This car has always done this. It gets a bit warm around town but on the track it really heats up. Now I drive HARD, I mean full throttle, balls-to-the-wall, redline shifting while I'm out on the track. Probably a lot harder then most people. The car never misses a beat. Perfect water temp and perfect oil psi. Just hot oil. I'll pull off and down it goes. | ||
| jeff ryerson (Atheyg)
Junior Member Username: Atheyg Post Number: 220 Registered: 8-2002 |
I put a fan on my previous 911 front fender oil cooler it lowered my temps about 15'in townso it does make a difference for stop and go It depends where you are having the problem, if its overheating in stop and go traffic yes it will help but if you are on the track or at highway speeds it will impair air flow a bit and not offer any additional cooling 280' is way too hot you should not run above 260' you may have a obstruction in your filter or pick up screen or your oil pump may not be functioning properly I am sure you changed your oil since it ran to 280' but you might try changing brands of oil, I went thru this on my 911 and found it actually ran hotter with a full synthetic vs Valvoline Racing 20/50 dino | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1104 Registered: 5-2001 |
Also - I have checked the duct work to the oil cooler. There is no debris blocking the air flow. Everything checks out fine. | ||
| Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member Username: Vwalfa4re Post Number: 1103 Registered: 5-2001 |
I had high oil temps with normal water temps with mine. I replaced to oil temp sending unit 3 weeks ago. Same problem. I tracked the car at Barber's and, once again, after 4-5 very high speed laps the water temp was perfect but the oil went above 280. Yes that's 2-8-0. After one "cool down" lap and a drive to the pits it would drop about 20 degrees very quickly. This was not a hot day. Around town the water the water needle will stay to the left of 195 but the oil runs just to the right of 210. (Oil levels are normal - I warm the engine and shut it down on level ground for 15 min before checking it just as the owners manual says). I have a plan for a fan with a on off switch run to my defrost switch (which I never use) to maintain a stock appearence. I plan on beginning this project after this weekend's trip to the Mitty in Atlanta. I'll post pics and details when I am done. | ||
| Sam NYCFERRARIS (Sam)
Member Username: Sam Post Number: 375 Registered: 4-2001 |
JC whitney has a oil cooler witha integral cooling fan and thermo switch..not stocka nd don't know if it will fit but it looks like a cool ez solution if it will fit. | ||
| Frank Foster (Sparta49)
Member Username: Sparta49 Post Number: 506 Registered: 3-2001 |
yesterday while driving my 84 QV with aluminum radiator and the a/c on the water temp was at 180 and it was fairly warm in New Orleans yesterday. By the way the a/c was blowing 40 degrees at the vent. Thanks Kelly  | ||
| Ben Millermon (Brainsboy)
Member Username: Brainsboy Post Number: 252 Registered: 5-2001 |
An Oil cooler fan is a great idea. It would work great for idle and anything under 20,25 mph. The coolers do not usualy go bad, if they do, they start leaking oil all over the place, so unless yours is leaking its probably good. It wouldnt hurt to take it off and check the fins on it. Make sure you havent swallowed up any birds,ducks,cats, ect, that might of damaged the fins. Ben | ||
| david handa (Davehanda)
Member Username: Davehanda Post Number: 613 Registered: 5-2001 |
My 328 would not read higher than about 180 in similar conditions on both oil and water. I would have the radiator checked, it may be partially blocked and needs to be rodded out (a common ailment on 308/328's). Or the thermostat is not opening all the way. Replace the oil temp sensor anyway, it is only 15 bucks...you may be surprised. Sometimes we WAY over analyze problems and it can drive you nuts. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1687 Registered: 1-2001 |
210 deg F coolant temp on a 70 deg F day idling with the coolant radiator fans "on" seems high to me -- what do other 308QV Owners see under those conditions? | ||
| Ken Ross (Kdross)
Member Username: Kdross Post Number: 315 Registered: 2-2002 |
When the oil is reading 230, the water is about 210. These readings seem to be high, and we have already confirmed that the gauges are working fine. We tested the radiator and engine with a heat gun (laser) and the readings were the same as those on the gauges. Any other ideas? Ken | ||
| david handa (Davehanda)
Member Username: Davehanda Post Number: 611 Registered: 5-2001 |
Ken, replace your oil temp sender before you do anything. My previous 308 suddenly started doing this; high oil temp reading, normal water temp reading. Replaced and all was well. The fan thing is discussed frequently, and the consensus, like radiator issues, is if the stock system is running normally, you don't need to modify a thing. If you are, if is to compensate for a defective component...Finding the defect is the order of the day. | ||
| "The Don" (Mlemus)
Advanced Member Username: Mlemus Post Number: 4005 Registered: 8-2002 |
Agree Steve. Something is reading wrong. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1684 Registered: 1-2001 |
Ken -- Are you saying that the oil runs an indicated 230 deg F, but the coolant indicates a much lower temp (during steady-state street driving)? If so, I'd try replacing the oil temp sender before resorting the aux oil cooler fan modification -- JMO. | ||
| Ken Ross (Kdross)
Member Username: Kdross Post Number: 314 Registered: 2-2002 |
It has been suggested that I install a fan on the oil cooler of my 308QV with an on/off switch. This would greatly help keep the oil cooler on those hot days when my oil hits 230F. Any thoughts on this? Also, do oil coolers go bad? I am thinking that my cooler may not be working correctly since my oil normally hits 230F once the engine is warm on any day that is above 70F. Thanks. |