Olli Snellman

How much hp you have take from N/A 944 engines. I just delivered a adjustable cam gear to one person who has a 944 track car. It's an early car without the possibility to change eprom easily. Engine is a stock ROW 944 N/A with heavily modified intake ports. Head has been done one of the most respect head builders here in Finland. With this head they have dynoned 193 hp. Head builder told that with modified exhaust ports they can have easily over 200 hp with adjustable cam gear.

some details of this cam gear



Cam gear installed into my friends 3.0L 951

Voith

dyno plz.

Mongo

I'll believe it when I see it...

MAGK944

Don't be a tease, what head work was carried out and where is the dyno? TTIUWO(DYNO)

Gina

Mongo

I have seen cars that had 3-angle valve grinds and port work done with less than 2 HP gained on the dyno. To yield those numbers, you'd better have over 11:1 compression and be running that car on 94+ octane gas to get some belief from the people around here.

You aren't the first person to be laughed at for your claims. I'm just warning you in advance.

V2Rocket

by my math youd need to significantly increase the airflow with that headwork assuming everything else is the same.

the stock euro motor flows about 418 m^3/hr at WOT...for 193HP (crank) youd need around 505 m^3/hr. and if its NA id think you might need to stroke it in order to pull that much air in.

maybe its some super-rich fuel and the cam gear is fully adjusted..?

Olli Snellman

I haven't seen any dyno figures, that's just what he told me. i have no experience to hop up 944 N/A engines, i am building a 3.0L 951, so i am into turbos. Cam gear is not yet installed into this N/A engine. I know this is a sensitive issue, but i have seen dyno figures from some other european cars which has much smaller engines, so why wouldn't 944 N/A engine produce some serious HP figures if engine is built right.

Mongo

It costs more than it's worth that's why. People have even deleted balance shafts to get N/A motors up to 2.8-3.0 Litres to yield over 190 HP, but they destroyed themselves due to the vibrations.

Scootin159

What do balance shafts and an increase in displacement have to do with each other?

M758

It is quite easy.... to maek 192 crank hp with a 2.5L 944 NA. Just make sure you have a 16 valve head!


Not going to happend on and 8 valve head unless you do some serious engine work and rev the crap out of it. I have heard of and beleive 183 crank hp 2.5L 8 valve motors, but that is still 10 hp shy. 10 hp is long way once you have already cranked out 20 more than stock on these things.

Oh... I assume you are talking crank hp and not at the wheels 192 at the wheels takes 3.0L and a 16 valve head at minimum.

944CS

I'd believe it with the right cam and tune up

RMills944

I have a friend that had the head re-worked on his 924S a while back and picked up 11 Hp, but I don't know about picking up that much!

V2Rocket

head work is definitely a way to get some more airflow, but your engine needs to be able to match the airflow with fuel. most mass-produced engines are made with cost in mind. they make the engine in a way that it makes power but is cheaper to produce and so they can make 300,000 or however many each year. the 944 engine out of the box is pretty much as good as it gets based on 1980s technology. in 1982 when the 944 debuted in europe it made around 160HP from a 2.5L 4-cylinder. in the same year the chevy corvette with twice the cylinders and more than twice the displacement (5.7L) made only 165HP.

im not saying its impossible to make power with the 944 NA engine but it will take alot of money to do anything really worthwhile while maintaining natural aspiration.

if you want to really make some more power with the engine, get the most airflow you can from the head, give it some high compression pistons, change the engine management a bit, give it a MAF and maybe try individual throttle bodies with velocity stacks. then run it on the highest octane you can and adjust accordingly.

DarkGrey

Jajajajajajajaajaja

I'm sorry but who exactly is this Finnish head builder and why should his estimates be taken so seriously?

V2Rocket

because hes finnish and they have lots of garage time during the 6-month winters.