Porsche Enthusiasts Club Forum

first post here hi everyone.

ok , im trying to find info on different 944 2.5 8v engines without much luck lol . i assumed they were all the same but read somewhere that the 87 model had a lower c/r and less power. since then ive read that the 87 was actually the one with more power?

info ive got .....

1987 - m44/07 - 158bhp@5900rpm - c/r 10.2
1986 - m44/07 - 150bhp@5500rpm - c/r 9.5
1985 - m44/02 - 150bhp@5500rpm - c/r 9.5

first ..... are these figures even for uk cars?? lol
whats the difference between the 07 and 02 engines?
what changed to up the c/r? head? pistons?

yet more confusion .... after reading the above i found a web page saying from 1982-1989 all 2.5's made 163bhp and 151 lb/ft

any help much appreciated
cheers

The last figure I agree with (for UK cars) The other figures look like 924S numbers to me, these were detuned up until 88 because otherwise it would have been faster than the 944. Also I believe the USA spec for the 944 is 150BHP.

Agree with Jim. But with cars of this age it's all academic. Put it on the rollers & then see what you have. Typical fiures are around 110 at the wheels except for a few. A long way from Porsche ones (Which are flywheel) Far as I know the head is the same on all the lux's. The 2.7 had larger inlet valves & are very expensive when you find one. Most difference is in the DME computer fitted to the car. Fuel injection very much in it's infancy at that time.
Hi & welcome by the way Have you got one or are you thinking about it?

Welcome to the forums.

Click on this : https://techinfo.porsche.com/techinfo/p ... ATALOG.pdf

and go to the V-Pages (bookmarked, but near the end of the doc) - this lists the engine types throughout the model's history.

None if that matters - down to colour

True. Red is the fastest

Hi J.J

Not another colour blind owner...BLUE is OBVIOUSLY faster.....

All the best Brett

tr7 , i thought the u.s got 143 bhp ?

j.j , got an 87 model im not bothered about what power its making at the min i just wanted to start with the best that porsche gave and go from there. having a head machined so wanted to work out how far i can go with skimming with the head ive got etc
anyone know if the pistons are proud of the block at tdc?

dme has gone so wont be restricted by that , got individual bodies and fancy ingition so fuelling and revs wont be limited to standard. really i should just nail them on and be happy but im a bit obsessive with internal specs and getting the best out of the standard parts bin

reading up ages back and sure i remember the 2.5 crank / rods and pistons being a bit special compared to usual mass produced bits? i might have made that up though ? lol

i'll put some pics up when i have the time and motivation to work on it again, its just research at the min so i can get the head specced well. has anyone got any info/experience with the cam in these? at what power does it get restrictive? any recommendations?

cheers

thanks

brett, how much power should i expect to gain with a respray in blue?

No, they're flush with it.

cheers , i'd have checked but dont want to take the head off yet

Hi

Welll......

If you spray Nitrous as well as being Blue.....the sky is the limit

All the best Brett

thats phase 2 if the bores are up to it

Of course, if you get it wrong, that's about where the bits of engine go

Brett is right though, blue is the fastest colour, whatever anyone else says!

Theres a dimple in the head face. Don't skim it out! Thats as far as you can go. But Lindsey racing do cometic gaskets in different thicknesses. Got one on my cam box & it's good. No leaks & reusable. Used a stock Turbo head set on mine. Engine internals are a bit speical. Cranks a work of art! The stock head limits you to 165hp in thoery. (If you believe the flow figures from Lindsey racing.) Needs bigger valves & port work to go further. Or forced induction. (The most cost effective route hence the 951.) Had big plans for mine but spent all the money just sorting it out! Maybe one day. Throttle bodies sound interesting.