Menu toggle

carbs on a 2.5/3.0 engine ?

ocallen

New member
Has anybody experience of fitting carbs on a 2.5 or 3.0 engine ?
If I go for the 3.0 S2 engine are things simplified by fitting carbs ?
 
I do have experience of twin carbs but not on a 944. I could see the advantage of fitting ITB's but not seen any on a 944, it would make a nice converstion with modern injection. My experience of twin carbs is that they dont stay working for long always need a tweak every couple of months to get the best from them. The only other thing would be the room between the head and the bonnet.
 
I have experience in the distant past of SUs on MGs and Mini Coopers and Webers on Alfa and Lotus. It was part of the ritual of having a 60/70s sports car of setting the carbs, often not sucessfully. But when right, the noise and go was good.
 
Id expect to lose a great deal of drivability. The fuel setup on an S2 is much superior to that on an eight valve car: I cant see any advantage...
 
Years ago I had a couple of Escort RS 2000's with twin 45's on, they sounded amazing, not sure if you could find a manifold to fit them to a 944 though, and the fuel consumption would be worse than with injection.
 
ORIGINAL: 944 man

Id expect to lose a great deal of drivability. The fuel setup on an S2 is much superior to that on an eight valve car: I cant see any advantage...

Properly set up carbs used to be more flexible than fuel injection.
 
I'm just trying to consider all options for the car I have with its present engine and its intended replacement, S2.

There are also aftermarket fuel injection systems available, initially costly but would they be an option for my plans.
 
ORIGINAL: pauly

ORIGINAL: 944 man

Id expect to lose a great deal of drivability. The fuel setup on an S2 is much superior to that on an eight valve car: I cant see any advantage...

Properly set up carbs used to be more flexible than fuel injection.

And my Grandad's Triumph PI used to manage 12mpg, but what is your point? You cant seriously be suggesting that a pair of DCOEs will be more flexible than fuel injection on a 1990 car? Webber Alpha was more flexible and matched peak power in 1986 and that was an aftermarket kit!
 
ORIGINAL: 944 man

ORIGINAL: pauly

ORIGINAL: 944 man

Id expect to lose a great deal of drivability. The fuel setup on an S2 is much superior to that on an eight valve car: I cant see any advantage...

Properly set up carbs used to be more flexible than fuel injection.

And my Grandad's Triumph PI used to manage 12mpg, but what is your point? You cant seriously be suggesting that a pair of DCOEs will be more flexible than fuel injection on a 1990 car? Webber Alpha was more flexible and matched peak power in 1986 and that was an aftermarket kit!

Do you see where I put the words "used to" in my post ?.
 
Yes, but can you understand why I wouldnt understand the point of your remark. What used to be has nothing to do with what the OP is considering. Unless he has a time machine: in which case should he find himself in the early nineteen eighties, then do not rule out DCOEs.....
 
ORIGINAL: 944 man

Yes, but can you understand why I wouldnt understand the point of your remark. What used to be has nothing to do with what the OP is considering. Unless he has a time machine: in which case should he find himself in the early nineteen eighties, then do not rule out DCOEs.....

Can I understand why you don't understand, er do I want to ?, no.
 
A set of twin carbs are very felixible, as long as you set them up right and match the dizzy to suit. I would think with the right set up carbs on a S2 would find an extra 15% more power. Its not like the injection on any 944 is modern!! You could never find another 15% with a re-chip. People are all to fast to count carbs out as old tech and that 1980's injection is better. OK you might not get the MPG with the carbs, but who cares.

To give a small example my Golf runs 148BHP that is 33BHP over stock 1980's injection and the mods to the engine? A set of twin Del's.
 
The right was to do "carbs" these days is, as you suggested above Tom, individual throttle bodies. I'd have thought an S2 motor running standalone management and 4 Jenveys or similar might produce a bit more than 211bhp and would sound awesome.

Easier to put in a Lux than fitting all the associated Porsche bits from an S2? Not even close.
 

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Back
Top