more horses
- Thread starter craig
- Start date
You can do anything with enough money and mechanical ingenuity but I've never heard of there being a tried and recognised path to ditching the fuel injection from a Porsche 944 and putting it on carbs instead. It certanly wouldn't increase the performance in itself, though you could do it in conjunction with other engine modifications I suppose. Why would you want to? If you need to get more fuel in, there are easier and more efficient ways of doing that via the injection system. The hard part is how you intend to get more air in.
What model of 944 are you talking about: a 2.5 Lux?
What model of 944 are you talking about: a 2.5 Lux?
Suffolk944
Moderator
Think the OP has an 1984 Lux. Am no mechanic but I would say the carb idea is a dead end !
Fitting large carbs to Golf GTi's was a bit of a craze a while ago at least. That involved junking the injection system in much the same way. It was generally seen as being a quick route to more mid-range torque and throttle responsiveness, at a significant fuel economy expense.
I've never ever heard of it being done on a 944.
Oli.
I've never ever heard of it being done on a 944.
Oli.
I am no mechanic and I don't understand why this is done, but it is quite popular in the aircooled 911 world, and all the ones I have seen sound glorious and the engine looks stunning with a set of trumptets in there. Very expensive from what I can gather.
I would be interested in understanding why this mod is done and what it brings to the car. I have also not heard of it being done to a 944.
I would be interested in understanding why this mod is done and what it brings to the car. I have also not heard of it being done to a 944.
Nitrous Oxide, when heated, breaks down to produce nitrogen (I think) and oxygen, in large quantities. More oxygen in the cylinder means you can put more fuel in without the engine running rich, and thus extract more power from a given engine capacity.
It's simple, cheap and not very difficult. The hardest part of a nitrous conversion is getting the extra fuel in there and controlling the whole thing correctly.
The simplicity and cheapness, and the fact that it can be readily bolted onto pretty much any engine, makes it appeal to those who want more power cheaply. Nothing wrong with that per se, but it does seem to appeal particularly to the go-faster crowd who quite like their bolt-on modifications and outrageous power claims.
And, before you know it, you end up with something looking like this:
Oli.
It's simple, cheap and not very difficult. The hardest part of a nitrous conversion is getting the extra fuel in there and controlling the whole thing correctly.
The simplicity and cheapness, and the fact that it can be readily bolted onto pretty much any engine, makes it appeal to those who want more power cheaply. Nothing wrong with that per se, but it does seem to appeal particularly to the go-faster crowd who quite like their bolt-on modifications and outrageous power claims.
And, before you know it, you end up with something looking like this:
Oli.
Peter Empson
PCGB Member
First things first, probably best to get your car on a dyno, it wont cost much and will tell you where you currently are. If the power is down from factory specs then simple maintenance will be money well spent. You are very unlikely to find any real peak power gains with a chip (and even less with an exhaust in my opinion), but the driveability will increase with the former so the car will often feel newer and more perky.
If you really want to go a lot quicker then stripping the car is the way to go, a proper engine rebuild could net you a bit more but will be costly. Changing the anti roll bars (to those taken from a late turbo) and fitting some better brake pads will make it a lot more fun (unless you're only interested in straight line speed). Nitrous never appealed to me, would get fed up refilling it, and don't expect the transmission to last long, they're the weakest part of the car.
Suffolk944
Moderator
Always see nitrious as potentially a good thing for speed attempts and a bit of a laugh. The idea of having very short bursts of oomph on the road and constantly having to refill doesn't make much sense to me on top of the whole wear and tear issue.
Craig, there's a fairly recent thread over on TIPEC with a guy looking to add nitro to his S2 which may or may not prove helpful to you.
Craig, there's a fairly recent thread over on TIPEC with a guy looking to add nitro to his S2 which may or may not prove helpful to you.
sawood12
New member
I think NoS is quite an elegant solution and a far cry from the boy racer image it has got. If you upgrade your engine you are spending alot of money on mods to increase the HP and performance of the engine often compromising the engine in other areas (lumpy low speed running, high fuel consumption, increase in noise etc) - but that performance is only exploited for about 5% of the time (unless it is a track car that is tracked alot) therefore all that expense and kit is largely redundant. I also think it is a much better alternative to E85 for that reason too E85 is good when you're on boost but the rest of the time it is a PITA. NOS is relatively cheap and provides you with as much performance as you need when you need it, and when you don't you've not compromised the running/fuel consumption and other aspects of your engine. Also because NOS is highly pressurised it super-cools the intake charge which is good for prevention of knock (= more boost and smaller IC). I think it was John MItchell who said when he played with Nos after a hard blast the intake manifold would be encrusted in frost it got so cool.
A 944 turbo with a good NOS setup would be a very interesting prospect. With a huge turbo and a bit of clever programming you could use the NOS to combat the turbo lag and when the turbo came on song you're really take off.
A 944 turbo with a good NOS setup would be a very interesting prospect. With a huge turbo and a bit of clever programming you could use the NOS to combat the turbo lag and when the turbo came on song you're really take off.
pauljmcnulty
Active member
Rewind to your first post, read the replies and insert "supercharger" for "carbs". [
]
Peter Empson
PCGB Member
You certainly can supercharge it, if you're able to diy it then I'd say go for it, possibly can just be done for about £1,500 with used parts, but that's very much a guess. If buying an existing kit then it's likely that it will be much cheaper to buy an S2 or turbo, both of which will have more power than an SC'd Lux.
Indeed: the golden rule of car mods and economics always applies: if the manufacturer made a version of your car which has the attributes you desire (especially more power) it is generally a lot cheaper to sell, and buy the faster model, than it is to modify your existing car.
dave364634
New member
a carb won't make things better unless you've got a turbo.
nos is useless unless you go to santa pod (n2o is expensive, insurance will more than double).
get a chip is you want, but the non turbo 944 engines don't seem that tuneable, and a 2.7 / 3.0 swap would be better. an LS swap would be best.
nos is useless unless you go to santa pod (n2o is expensive, insurance will more than double).
get a chip is you want, but the non turbo 944 engines don't seem that tuneable, and a 2.7 / 3.0 swap would be better. an LS swap would be best.
DivineE
New member
COME ON! 19 posts and no one. Anyone.. anyone.. oh ok I'll say it.
BUY A TURBO! £1500 944 lux + £1000 inevitable new owner costs + £1500 wasted on silly tuning ideas over 6 months trying to gain 10hp = £4000 = Turbo money.
Chipped 220 turbo = 280hp plus 300+ torques thats a gain of nearly 150hp! ..and you get a free brake/chassis upgrade to go with it! It's a deal, its a steal, its the sale of the something century.
BUY A TURBO! £1500 944 lux + £1000 inevitable new owner costs + £1500 wasted on silly tuning ideas over 6 months trying to gain 10hp = £4000 = Turbo money.
Chipped 220 turbo = 280hp plus 300+ torques thats a gain of nearly 150hp! ..and you get a free brake/chassis upgrade to go with it! It's a deal, its a steal, its the sale of the something century.
Posts made and opinions expressed are those of the individual forum members
Use of the Forum is subject to the Terms and Conditions
