Modified 997s

[M32GER]

CarreraLightweightRacing said:

Does anyone have a picture of this pinning process described above ?

This is what Sharkwerks provide:

http://sharkwerks.com/porsche/technical-articles/3...

[M32GER]

mm450exc said:

Pinning is not a fix. Just prevents disaster. Will still leak once epoxy breaks down.

I also used those new coolant fittings.

Hmmm then not sure what to do then. Guess will wait for the fittings to arrive and suss it out from there

[M32GER]

The brake calipers came back from the painshop today. Went for viper green with silver brembo logos. Planning to take those two colours forward as the accent colours

[kev.RS]

Finish looks amazing.

Close with the design?

[kev.RS]

[M32GER]

Not far off sir. But going to be a little less green and more silver. Silver centre stripe as per the 4.0 RS but with thin green edging. Mirrors kept white but with the lower blade only in green. Silver side decals perhaps witha small touch of green. Green stitching inside and green roll bar. Silver seat belts and harnesses. The rest white.

[M32GER]

Alternaitively thinking of switching to green seat belts as I have that available also, but it is not viper green. Its more like the green above which could also look cool. But then would need to redo the calipers to match.

[kev.RS]

I see, more swapping the red bits for green on the 4.0?

I couldn't live with two different greens and would stick with the first plan as to much hassle to get them painted again for the sake of the belts.

Have to get some custom green BBS centre caps.

[M32GER]

[kev.RS]

No rest for the wicked!

I'm surprised you haven't taken the rear deck lid off in anticipation of the duck tail!

Forgot to say love the E55, would be good to run the later 500bhp V8 kompressor in it and be a proper stealth car with a 600bhp tune!!

Look forward to the updates.

P.s Nice white Intergrale!

[Steve Rance]

The safe and easy option on tuning would be to go Porsche motorsport on the diff, engine and brakes. The motorsport 3.8 barrel and piston kit is tried and tested and of good quality. You could change the cams at the same time but to be honest, I wouldnt bother. You should get a reliable 450BHP plus with a decent remap. We raced a completely standard 9973.6 cup in the GT Cup series for a few rounds aginst 997Cups that had the 3.8 upgrade. I think that the drivers were Mike Donovan and Paul Hogarth. I found that the upgrade offered a substantial increase in reliable performance. It is not an exprensive upgrade in relative terms and is reliable. Brakes, I'd go Alcon floating disks or cup on the front and leave the rears as standard. With a Cup or Guards diff, the rears will do a lot less work and you wont need any more performance. Guards will build the diff to your own specification but the cup spec with a little less preload will be absolutely fine, or you could just buy a cup unit and set your own preload. While the engine is out, i'd fit a single mass flywheel. You've already covered off the damping with the KW clubsports. A nice Momo detachable cup steering wheel will give you more feel through your fingers.

That will give you a lovely car and make the driving experience pretty close to a 997 cup on the road.

[Murph7355]

kev.RS said:

Finish looks amazing.

Close with the design?

Stripes like that never look finished to me.

I'd continue the lower black and white stripes round the front, and also the bonnet stripe down to the front. The black and white edges could then curve into the lower ones.

[Cunno]

M32ger

Good to see there are other nutters out there who are willing to ruin a perfectly good Gt3.
Enjoy the journey, these cars can be greatly improved upon. Looking at your build list it will end up with something similar to my car, but I haven't done anything yet to reduce weight within the interior, next project.

Be careful with the black poly engine mounts they transfer a lot of noise and vibration into the car, I binned mine and went with the Tarrant green ones which are softer. Just about liveable with.

The other thing I'd recommended if your tracking is don't bother with the Porsche motorsport diff plate on a 997, to get the best out of the car and to stop the electronics messing about go GT with 40/60 ramps. This works but takes time to get use to.

[Cunno]

Another thing, weld the coolant pipes, anything else isn't a fix imo, you just need a good welder.

Edited by Cunno on Monday 11th September 23:25

[Cunno]

Steve Rance said:

The safe and easy option on tuning would be to go Porsche motorsport on the diff, engine and brakes. The motorsport 3.8 barrel and piston kit is tried and tested and of good quality. You could change the cams at the same time but to be honest, I wouldnt bother. You should get a reliable 450BHP plus with a decent remap. We raced a completely standard 9973.6 cup in the GT Cup series for a few rounds aginst 997Cups that had the 3.8 upgrade. I think that the drivers were Mike Donovan and Paul Hogarth. I found that the upgrade offered a substantial increase in reliable performance. It is not an exprensive upgrade in relative terms and is reliable. Brakes, I'd go Alcon floating disks or cup on the front and leave the rears as standard. With a Cup or Guards diff, the rears will do a lot less work and you wont need any more performance. Guards will build the diff to your own specification but the cup spec with a little less preload will be absolutely fine, or you could just buy a cup unit and set your own preload. While the engine is out, i'd fit a single mass flywheel. You've already covered off the damping with the KW clubsports. A nice Momo detachable cup steering wheel will give you more feel through your fingers.

That will give you a lovely car and make the driving experience pretty close to a 997 cup on the road.

450bhp with the a 3.8 can be achieved, but the extra torque is what you really notice, 350 ft lbs on my car, more than a 991 RS. I did cams as well, and I would recommend as car runs 476 Bhp. With this conversion you will need to look at your con rods as the 3.8 and 3.6 have different sizes pins 22mm v 23mm so either mod existing or buy new, expensive option but worth it for piece of mind.

Alcon work well, so do Performance Friction. Personally if your going this route I'd up the diameter, 380mm up front and 360mm rear for the extra £££ you may as well go bigger. The new RSL Padig pads work well much better bite than the RS29s.

single mass flywheel. A must.

KWs good kit, but to make alterations you have to get under car JRZ or Moton have remote canisters which means you can alter set up much quicker and cleaner. Most people I know who don't have remote canisters don't bother altering set up as it too much hassle, something to consider.

Edited by Cunno on Monday 11th September 23:31

[M32GER]

Steve Rance said:

The safe and easy option on tuning would be to go Porsche motorsport on the diff, engine and brakes. The motorsport 3.8 barrel and piston kit is tried and tested and of good quality. You could change the cams at the same time but to be honest, I wouldnt bother. You should get a reliable 450BHP plus with a decent remap. We raced a completely standard 9973.6 cup in the GT Cup series for a few rounds aginst 997Cups that had the 3.8 upgrade. I think that the drivers were Mike Donovan and Paul Hogarth. I found that the upgrade offered a substantial increase in reliable performance. It is not an exprensive upgrade in relative terms and is reliable. Brakes, I'd go Alcon floating disks or cup on the front and leave the rears as standard. With a Cup or Guards diff, the rears will do a lot less work and you wont need any more performance. Guards will build the diff to your own specification but the cup spec with a little less preload will be absolutely fine, or you could just buy a cup unit and set your own preload. While the engine is out, i'd fit a single mass flywheel. You've already covered off the damping with the KW clubsports. A nice Momo detachable cup steering wheel will give you more feel through your fingers.

That will give you a lovely car and make the driving experience pretty close to a 997 cup on the road.

Hi Steve, thank you very much for this detailed and comprehensive advice. I am far from an expert on this, it being my first build (not my hands doing the work...) and am not technical myself so this is really appreciated. Will certainly look into the above in detail, particularly the cup diff and the 3.8 barrel and piston kit. On the brakes I have the brembo's already so will keep those and yes fully agreed on the single mass flywheel, already in hand and waiting to go on. I have the cup steering wheel and rennline quick release (mostly serving as a fancy spacer to pull it in closer to me) installed already. Many thanks again

[M32GER]

Cunno said:

M32ger

Good to see there are other nutters out there who are willing to ruin a perfectly good Gt3.
Enjoy the journey, these cars can be greatly improved upon. Looking at your build list it will end up with something similar to my car, but I haven't done anything yet to reduce weight within the interior, next project.

Be careful with the black poly engine mounts they transfer a lot of noise and vibration into the car, I binned mine and went with the Tarrant green ones which are softer. Just about liveable with.

The other thing I'd recommended if your tracking is don't bother with the Porsche motorsport diff plate on a 997, to get the best out of the car and to stop the electronics messing about go GT with 40/60 ramps. This works but takes time to get use to.

Hi Cunno, thanks very much for this. Yes completely, I used to have a 997.1 GT3 RS when I was back in the UK and of course I regret selling it but equally I regret not driving it enough so not this time! Starting with a non-garage queen was intentional though as then I don't feel bad at all. One day I will update this thread and she'll have over 300k km on the clock. And then some more. I plan to drive it relentlessly and when something breaks it will just be fixed or more likely taken as an excuse to upgrade : ))

On the engine mounts I actually have the rennline semi solid ones:

https://www.design911.co.uk/mobile/#part;id=130028

I had them on my old Carrera and so just going to switch them over as I agree I was also worried about going too firm. I found these to be amazing and made a massive difference to the shifting and balance under hard braking. I wasn't convinced when my friend first suggested it but I now view it as an essential upgrade. Really night and day and not that expensive really.

Very sorry though but your last para may as well be written in Chinese, come again? : )

[M32GER]

Cunno said:

Edited by Cunno on Monday 11th September 23:31

Sorry Cunno, would yoy mind elaborating a little more on the conrod and pins point in layman's terms? Thanks

[M32GER]

Cunno, regarding the pads, I have the pagid RSL29's on order at present. Are these the ones you refer to as having the better bite vs the RS series or the other way round? Sorry wasn't clear to me. Thanks.


http://www.pagidracing.com/en/products/racing-brak...

I had the RSL29 and RS14 recommended

[M32GER]

Cunno said:

The other thing I'd recommended if your tracking is don't bother with the Porsche motorsport diff plate on a 997, to get the best out of the car and to stop the electronics messing about go GT with 40/60 ramps. This works but takes time to get use to.

I've done some reading around and starting to understand this a bit more now. So 40/60 seems to be fairly well accepted so makes sense. On the diff itself, Cunno, Steve, is the Guards Club diff good enough or is there a material benefit to spending more on the Pro. It is only for track days not racing, so I was thinking the Club will suffice? But hard to find comparisons on them online