fuel pump upgrade

im sure i read somewhere that saab 9000 fuel pump flow more and fit is this right ?

standard mk1 pump flows more than enough. trust me on that.
 unless it's broken, of course.

yer up to about 170bhp,

so does a saab one fit then :wink:

cabriaulait said

yer up to about 170bhp,

so does a saab one fit then :wink:

I worked it out once, the spec of the stock pump is 750ml/30 secs, at WOT on maximum revs the engine would only consume around 1/4 of that. So the original pump is good to around 400bhp.

cool nice 1 paul

that should just about do it then

im just theorising about fatter injectors on my pp head tbh

paul_c said

cabriaulait said

yer up to about 170bhp,

so does a saab one fit then :wink:

I worked it out once, the spec of the stock pump is 750ml/30 secs, at WOT on maximum revs the engine would only consume around 1/4 of that. So the original pump is good to around 400bhp.

exact figures, i do not know, but i'd certainly not be surprised to see one fuelling 400bhp.

cabriaulait said

cool nice 1 paul

that should just about do it then

im just theorising about fatter injectors on my pp head tbh

Don't worry about the fuel side, you won't run out of scope on the original injectors or fuel pump. The first limit you'll reach is the metering head, and this is (apparently) good to around 170bhp. "They" say that a 1.6 metering head can flow slightly more (air), so is good to around 180bhp.

If you achieve 170bhp or more from a 1.8 8V engine, let us all know how!!!

never said 1.8 8v tho did i!

cabriaulait said

never said 1.8 8v tho did i!

Well, 20vT and G60 engines use electronic FI, so the highest output is gonna be a 2 litre 16V or something like that. In which case, I'm all ears….

ive been thinking about a 2l project for a while and am slowly getting the bits together,
ive got a few mates who race beemas some on kjet theyre main tunin guy reckons that dub engines underfuel due to the injectors so hence my query.

quality of the explosion is all he keeps going on a bout cryptically!

whats the most bhp ever out of a 8v head?

jim at race power motorsport can work magic with k-jet. he can get 250 out of them with modifying. how? i don't know. but he's proper good with them. a 1.8 8v on k-jet can produce 170bhp, but that's not going to be fun on daily driving. throttle bodies and proper managment can help masses. i personally feel that for a road car, 150 ish is about as much as is needed in a mk1. 300bhp sounds good, but your talking major modifying, major money. the secret is 'useable' power. what's the point of a 200-250 bhp turbo that spins wheels in all gears and breaks alot?
 2.0 16v is the most i'd go for. though i'm putting together a 2.0 cammed 8v for myself.

so a 2l 8v could produce 200bhp?

in theory?

cabriaulait said

so a 2l 8v could produce 200bhp?

in theory?

The way to get high power outputs out of the 8V is to fit longer duration cam and address issues which mean you can safely rev it higher. Obviously, power is proportional to rpm. So if your standard GTI makes 112bhp at 6400rpm, then if you could make it rev to 8000 without losses, you'd have 140bhp.

112bhp@5800rpm