Engine performance upgrades

[Guest]

Do any of you 944 owners have any ideas as how to increase engine power and performance? I've already got a replacement exhaust (center section and backbox) and I have an induction kit on order.




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1984 944 Lux Alpine White

 

[Guest]

ORIGINAL: dazz944

Do any of you 944 owners have any ideas as how to increase engine power and performance? I've already got a replacement exhaust (center section and backbox) and I have an induction kit on order.


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1984 944 Lux Alpine White

Buy a 944 turbo.

 

[Guest]

A 944 Turbo is something to come later, after I've bought a house!

 

[Fen]

I don't think you'll get huge improvements on an early Lux but you could go with an induction kit. Any more (as I don't know if there are chips available for them) like a cam, big valve head etc. wouldn't be worth the money.

 

[944turboS]

Slim,

Any idea where Daz might get a good Turbo ?

 

[John Sims]

As a previous Lux owner - and still regretting its departure - I would recommend an induction kit. It doesn't make a lot of difference performance wise but it it sounds the nuts under load.

A throttle response cam is also good. Again it doesn't change the performance, it just opens the throttle quicker which makes the car feel quicker.

The only real performance upgrade you can really achieve in a Lux is to do a Peter Empson and strip weight out. This has the added advantage of being relatively cheap.

 

[Guest]

ORIGINAL: 944turboS

Slim,

Any idea where Daz might get a good Turbo ?

You suggesting i might have ulterior motives in my post?

Well you would be right []

 

[eastendr]

ORIGINAL: slim_boy_fat

ORIGINAL: dazz944

Do any of you 944 owners have any ideas as how to increase engine power and performance? I've already got a replacement exhaust (center section and backbox) and I have an induction kit on order.


--------------------------------------------------------------
1984 944 Lux Alpine White

Buy a 944 turbo.

[][][][][][]

That was almost a Bert Gear answer [][]

 

[sawood12]

If you really want to go to town without spending a fortune what about Nitrous Oxide? You can get kits for about £350 and will give you mega performance when you need it. It's not as hard on engines as you might think unless you go silly with it.

Actually might be good to apply on Turbos at low boost levels and RPM with it cutting out as the turbo comes on song to get round turbo lag!

 

[John Sims]

Actually might be good to apply on Turbos at low boost levels and RPM with it cutting out as the turbo comes on song to get round turbo lag!

I can barely get Beaky to run properly as it is without adding more variables to the equation. []

 

[Guest]

http://www.promax.uku.co.uk/promax944kit1.htm

No idea how much it does though.

Tom

 

[Peter Empson]

Hi,
I agree with the all above but couldn't resist adding my thoughts!
The route you're looking at with exhaust, intake and then a chip to finish it off seems the most cost effective way to go.
I had a rolling road rechip done (which I feel in an ideal world is a better solution than a generic replacment), and whilst bhp gains were fairly small the improvement in low down torque and thus driveability were well worth the cost. As for off the shelf ones I think the Promax parts from Andrew are probably as good as they get and an awful lot cheaper.
If you want the car to be much quicker all round then there are quite a few more worthwhile things to do to the rest of the car, for example Turbo anti roll bars make a massive difference to handling and grip and cost very little when bought used, also look to change the pads to something superior to the standard ones which struggle with hard road use, let alone track work (however the calipers and discs are well up to hard track work in my opinion).
Best regards,
Peter.

 

[Fen]

ORIGINAL: Peter Empson
for example Turbo anti roll bars make a massive difference to handling and grip and cost very little when bought used

Funny you should say that... []

I need to get a "for sale" thread going once my 220 Turbo owning mate has had his pick of the surplus 250 bits.

 

[Peter Empson]

>Funny you should say that...

Lol!
Looks like we could flood the market with them then as soon as my M030 bars turn up []
Best regards,
Peter.

 

[Fen]

Have you secured a front bar, Peter?

I'm not fitting my M030 bars until I get a price and decide if I want Weltmeister ones (Allan, are you reading this?) or until I absolutely have to, whichever comes sooner. I *might* have the full kit (brand new) available then.

 

[Peter Empson]

Hi Fen,
Yes, I'm taking part in the 968 group buy from the States and have ordered a complete set.
I'm hoping they'll be here and fitted in time for the Silverstone evening in July. Fingers crossed they'll be sufficient for my needs, but I'll be interested to hear about any progress you might make with the Weltmeister ones.
Best regards,
Peter.

 

[pae]

Interesting though your anti roll bars are, can we get back to the subject line ? [][]

In the latest (or last months?) 911&PW the chap running the 944 in the club chamionship had a claimed 190bhp out of a stock 8-valve 2.5 engine, using the "approved ECU and induction kit". That sounds like quite a hike in power to me.

I've been looking at the kit from Promax that's listed above, but conservatively expect about 15bhp on a sound engine. How are they getting ~30bhp, or is undriveable on the road? []

cheers ......... Phil

 

[pae]

Whoops, in contradiction to the request on my last post, who's selling Turbo anti-roll bars?

please mail philip.edwards@fsmail.net if you are (I'm away 28th May to 6th June so don't expect immediate response)

thanks ........ Phil

 

[Peter Empson]

I can't find the article mentioning the 190 bhp mod at the moment but I personally dont think its at all possible with just a chip and filter.
There was a firm that was claiming to work on the head and then rechip the car accordingly with the normal result being circa 190bhp, I think someone on this forum might have had this work done but I can't recall who at the moment - I think he was happy with the work and I guess he must have had before and after figures for the work.

I think your concern about an engines performance being suitable for road use is entirely founded, people seem to forget that the shape of the power (and more importantly the torque) curve are by far the most important things for an engine, the bhp figure alone tells you nothing.

I think Wayne found an extra 12-15bhp increase with the rechip on my car (on Super unleaded) and that seems to be about the average (the head on my car had also been polished during a top end rebuild and one of the silencers was also bypassed). Despite the rolling road used being uncalibrated I believe it was producing mid 170's at the time.

I seem to remember from a discussion with Wayne at the same time that he felt the Airflow meter could possibly be a limitation (a BMW replacement was mentioned as a possible candidate I think), but I'm not sure if he ever had the oppurtunity to find out if this was the case (I believe it would be rather time consuming and expensive for the likely gain).

Other possible options would be to remove the balance belts which should see a 4bhp gain (but this seems to be a can of worms in itself), and you could also look to do the exhaust manifold/header which I have heard from US tuners can be worth up to 7bhp (I'm a bit sceptical about this figure myself and was put off by reports that many aftermarket ones seem to crack).

Best regards,
Peter.

 

[Diver944]

I 'know' (in the internet forum sense of the word) a 944 Lux owner from Pistonheads who blew his engine up at a Top Speed day at Bruntingthorpe.

He had the engine rebuilt at EMC engines in Birmingham by Kevin Eacock -(Fen check the name for me []) who prepare the 944 Lux race cars. It was rebuilt with lightened and balance crank, balanced pistons, con rods etc, ported and polished head and with the compression raised. Then it was custom tuned with the usual exhaust and filter to make 190bhp

Cost was circa £1500 IIRC