| Author |
Message |
Bruno Barbieri (Bruno)
| | Posted on Friday, April 13, 2001 - 9:56 am: | |
30-45 HP. Compare with the 255 HP (slightly overclaimed) on the carb version.
BR
BB |
'75 308 GT4 (Peter)
| | Posted on Tuesday, February 27, 2001 - 9:55 pm: | |
Magneti Marelli distributors have used centrifugal advance only. |
Chris Coleman (Dmc4cc)
| | Posted on Tuesday, February 27, 2001 - 7:48 pm: | |
Your "lag" is probably caused by the greenists trying to make your car more enviromentally friendly. Take off the distributor vacuum advance, and richen up the misture a tad, that'll make it fly. |
Steve
| | Posted on Tuesday, February 13, 2001 - 11:46 am: | |
Carbs can also be tuned to give more horsepower. I must agree with the post toward the middle to, Carbs do make for a great sounding Ferrari engine. I bought the Ferrari because I love the sound and the engine is Fabulous. I would Seriously look into a Carb 308 as insurance is cheap on them because they are considered classics and if your even partially mechanical they can be very rewarding to repair yourself. Good Luck! |
Anonymous
| | Posted on Tuesday, February 13, 2001 - 2:55 am: | |
Formula One cars have not used Carb's for decades!
The earliest Ford DFV's that were the original customer F1 engine for Lotus in the Jim Clarke era used mechanical LUCAS Fuel Injection because it was better than the carbs even back then! |
Anonymous
| | Posted on Tuesday, February 13, 2001 - 12:47 am: | |
I'm sure you're right - that's why all Formula One cars use carburetors. |
Anonymous
| | Posted on Monday, February 12, 2001 - 2:03 pm: | |
The mechanical fuel injection can not be very effient. Its using mechanics. Where as new systems are electronic. I would guess that the system used would robb about 20 to 30 Hp. It would be interesting to see a dyno with the FI system then one with carbs on it (using the same motor).
What most don't realize is how much power it takes to suck the paddle down in the Fuel housing. A venturi is more effient, and less restrictive. |
Anonymous
| | Posted on Monday, February 12, 2001 - 10:34 am: | |
Bret, you must remember that the sound of the Carbed cars is quite different. After all most due by the Ferrari for the Engine and the sound. |
Bret M
| | Posted on Sunday, February 11, 2001 - 10:46 am: | |
My '85 308QV has no hesitation what so ever. If it's above 3000 rpm and you hit the gas, be prepared to go for a ride. I'm gonna change to Nick Scianna's cheater pipes to make it a little faster (also at 55,000 miles the cats are probably shot anyway). My mom works for Mercedes so I've driven literally every car they have, if you want to see horrible throttle response and a totally numb shifter drive one of them. As everyone has said, the timing is the key here, with the looming emissions standards Ferrari made the 308i's suffer to overcome them. I have a carbureted Jeep Wrangler, don't get me wrong, I love the thing, but it's a lot more work than a FI car. I mean with a car like the Ferrari I could definitely understand going with a carb car because you expect to be maintaining it, etc. but I have heard that it is twice as much work to keep a carb car running than it is a FI car (this is probably not true, but there are disadvantages to the carb). It's just which you like. I personally like the 4-valve FI cars so that's what I have, if I wanted a carb car I wouldn't hesistate at all to get a early 308. Both the FI and the carbs have their pros and cons. If I were you though, I would keep the 308i. |
irfgt
| | Posted on Friday, February 09, 2001 - 5:47 pm: | |
I have to agree that the 80-82 308s get a bad rap when they seem to run just as good as the carb cars and even the 328 is not that much better. I have recently driven a 328 and had always heard how much better they were but I was badly disappointed. In fact I believe my 308 was faster. The trans shifted the same, the clutch felt the same and the brakes and steering felt the same and for $30000. more? I quickly decided to spend some money on my 82 308. |
David Prall
| | Posted on Friday, February 09, 2001 - 5:30 pm: | |
Sure, until you modify the timing on the "i" cars -- then they become quicker. Also, the emissions equipment on the injected cars is far more restrictive than on the carbed cars -- try taking all that garbage off an 81 or 82 model, and watch 'em fly. (oh, no emissions equipment means track use only, right?).
The FI eliminates fuel starvation upon hard cornering/braking maneuvers as well. |
Thomas
| | Posted on Friday, February 09, 2001 - 4:44 pm: | |
I have to disagree. I have a Carbed 308 and it is much quicker than the GTBi that I test drove before choosing a 78' GTS. I feel the if you are looking for more performance I would try to trade your car for one but not modify it. Also, I think that the carbs sound Great. I hope that I shed some light on your question. |
David Prall
| | Posted on Friday, February 09, 2001 - 2:18 pm: | |
Is yours a US spec car? If so, the poor low RPM response is more a function of the retarded timing on the US spec, 2V injected cars. The Bosch FI system offers significantly better performance over any carbed setup. Think about it, the fuel is already being introduced before the lagtime associated with the Venturi induction of the air. In fact the Ferrari solution to the tightening emissions standards (and resultant loss of performance) of the 80's was to abandon carbs in favor of FI. A lot of people pick on the 2V injected cars, but the real 'dogs' are the late 79 US spec carbed cars.
If you modify the stock timing, the injected cars are much better than the carbs (excluding the offset of additional emissions controls). Unfortunately, the stock ignition advance cannot be adjusted. You will have to add an aftermarket ignition to get the bang. Lots of systems have been tried. Personally, I prefer the MOTEC systems, but they are expensive. |
Anonymous
| | Posted on Friday, February 09, 2001 - 12:13 pm: | |
All the ferrari GTSI feel this way. I tested 4 or 5 before buying mine. They have that feeling like the induction system is very boggy, poor response. Im willing to bet that the mechanical injection system just steals bottom end torque and HP. |
Steve Magnusson (91tr)
| | Posted on Friday, February 09, 2001 - 10:34 am: | |
Not enough (if any) to justify the value/resale loss for such a significant modification IMHO -- why not sell or trade your "i" for a carbed car? Are you saying that the throttle response has changed recently to "poor" or that it's just always been "poor"? -- if a recent problem, you should make sure the ignition advance stuff is healthy.
Be careful when reviewing the HP "specs" -- the FNA site lists the 308 GTB/S as 240 hp at 7700 RPM (which I think may be "true" for the early Euro cars -- if any manf HP specs can be trusted), but the '78 US 308GTB/S Owner's Manual says 205 (S.A.E. net) at 6600 RPM which seems to match the "i" specs on the FNA website. |
Anonymous
| | Posted on Friday, February 09, 2001 - 9:41 am: | |
Seems that my 81 308 gtsi @ 60,000 miles has a poor trottle response. Just wondering if this could be due to the german K fuel injection? Would going to carbs have a better trottle response? Seems to me that the fuel injection system on this is highly restrictive. Any idea how much HP would be gained going to carbs? |
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