Replaced GT3 with 964RS--The story so far

[uktrucks]

Bought it in Barcelona and drove it back 1006 miles in 17hrs.Then decided that a good svs & check were reqd.It had just had a £10k engine rebuild.

Part one consisted of a major annual service [24,000miles] and a general health check. Andy Fearns did a thorough job of unearthing a few items that reqd attention and sorted then nicely.Rebuilt LSD, front susp reqd attention etc.
1st power run produced a dissapointing 281 BHP but I took it and used on the 964 Devon weekend anyway.

Now working on cosmetics, seat backs painted Indischrot, wheels had small cracks welded, refurbing wheels in anthracite with red detailing.

Part 2 consists of interogating chip/ecu, fitting cat bypass, new lambda probe, dyno run & set up to suit.
The car had developed an air leak at the inlet manifold hence weak running, bad idle etc. Andy fixed this and next power run produced 288 BHP. Next up will be cat bypass and chip to suit the hot air etc. Here's hoping for 300 BHP by end of today ??

Some more minor cosmetics to do and it will be ready.

Am I sorry I swapped from a GT3, no I have an equally rare car, £30k in my pocket and use it more because I am less concerned about mileage, stone rash etc.

Allan

[domster]

Allan, remember that the injectors can only flow <300bhp so you'll need to go to bigger injectors (probably run by Motec) if you want to get near or beyond this magic figure. 281bhp doesn't sound unhealthy in the first instance, anyway
Cheers
Dom

[murray]

Were you at the concours that weekend ? Hopefully Andy is going to able to have a quick look on Saturday at my rs to see if he can spot what's causing the smoking.

Jim

[uktrucks]

Jim
Yes I was in Devon a couple of weeks back. Saw your 993RS parked on the slope.
My car had wrong wheels on and o/s shark fin missing so did'nt look it's best.

Allan

[uktrucks]

Dom
What injectors is Mel running on his Cup Car ? He pushed a peak of 327BHP extrapolated to crank from wheel figure at G-Force when I was there.
I dont even think he has other cams fitted

Motec job is too expensive for the BHP gains IMHO

Allan

[domster]

Dunno, the merkin maniac will have to pipe up. I'd be surprised if they're standard injectors. I'd check the dyno if they are. You can upgrade to 944 Turbo injectors or poss 993 ones; Motec is used because the motronic can't fire the 944 Turbo ones, IIRC. The expense in Motec is really the mapping time - unique to each car and quite involved. The other main expense is the 6 new injectors, loom, lambda etc.

[993rsr]

UK Trucks - Try a Motec'd car and then see if you still think it's too expensive! Transforms the car!

[clarkey]

I drove the Black RS that Autofarm were selling last year with 9m's motec +1 conversion. The engine is bloody incredible.

[fergus]

Murray,

Are you popping over to Bicester on sat then? If so, I'll see you there. Andy's finishing some fettling on mine right now (964). I reckon a Motec M600 can be fitted and mapped (assuming you have a good series of base maps) and can source some 'cheap' bosch greens for about £3k. However, as Dom says, a lot of time goes into the maps specific to each engine.

Alan,

Is your car still with Andy then? It was there two/three weeks ago when I last saw Mr. Fearns....

[Melv]

uktrucks said:

Dom What injectors is Mel running on his Cup Car ? HAVEN'T A CLUE MATE!! I dont even think he has other cams fitted HE DOES........... AND BTW, IT WAS 323 BRAKE. RGDS MEL Allan

[fergus]

Mel

What type of cams are they, and what sort of spec are they (duration, overlap, etc.)?

[ultra violent]

Having just done an M600 conversion on my 965 Turbo, I can tell you £3000 will just about get the ECU (with appropriate extras). It won't cover mapping or sensors...

[Melv]

fergus said:

Mel What type of cams are they, and what sort of spec are they (duration, overlap, etc.)?

As I've said before, haven't got a clue. Work done by RS Tuning in der Vaterland in '96.

To be perfectly honest, I don't care, as long as it goes and can spank GT3 Cup Cars, I'm happy!!

Rgds
Mel

[murray]

Fergus,

Plan is to go to Bicester, hopefully see you there, then Pistonfest.

Jim

[henry-F]

Just remind me about the spanking again Melv you old tart !!

Get yourself some sticky numbers, an MSA licence and come and play with us, you`ll never look back. We might even manage to get you sub 1 minute round the Brands Hatch indy circuit !

Henry

[uktrucks]

Fergus
The car is back for the planned 2nd stage. I took it away for the Devon 964 weekend. Andy is a sterling chap and look forward to tommorrows conversation, hopefully he will have found more ponies.
He started it up for me today...Cat bypass, Cup rear pipe, drilled air box, sounds like ripping calico. Pure bliss. This car brings the hooligan out in me.

Allan

[Melv]

henry-F said:

Just remind me about the spanking again Melv you old tart !! Henry

Hee! Hee! Wondered when u'd rise to the bait....did I say Cup Car, I meant RS, of course...

Mel
PS I think u r all heart too.....

[AndrewD]

Jim - wot you'll be in Bicester and no mail to me or Scamps to say hello?

[murray]

I'm picking up a new trailer.

[uktrucks]

Just returned from AMd. The bad news is that the fine German technician who installed the hot wire in 1994 was so conscientious that he bonded the chip into the ECU PCB ! So Andy was therefore unable to extract it to interrogate it's settings/properties etc.

The good news is that even with this chip and now de-cat'd it now pushes 303.6 BHP at 6,259 rpm ! with 275.8 lb ft of Torque at 4,982 rpm . Rounded up of course to

304 BHP and 276 Lb ft I'm properly pleased at this.
The car according to the dyno plot is making over 300 BHP from 5,700 to 7,100 RPM and it makes 260 BHP at 4,900 RPM.

All in all not a bad result, pity about the chip and pity about needing 2 lots of dyno work because of the air leak on the inlet side.

Allan