NineMeister

Thanks Jean, I really appreciate your words of encouragement. Hopefully once the weather clears up in true Rennlist style we will back up the dyno result by posting a sub-10 sec 60-130mph on the DL1, so do keep an eye open for this.

The numbers for the GT3RSR engine are impressive Geoffrey, in comparison this 4.0 litre is currently putting down 358lbft (& 385bhp) at the tyre in 5th gear which is roughly the same torque per cc as the RSR which I assume is a 3.8 litre. The comparitive lack of top end power with our 4.0 litre is an indication of an air flow restriction at this high level of tune, so for experimental purposes we may increase the port size for my 2007 993 Sprint engine build and risk sacrificing a little torque for more top end, we know that the bottom end and valve train is good for 8000+rpm so it would be a shame not to use it more.

As for our target with the GT3, because the crank and rods are interchangeable we are going to make pistons & cylinders and build the large capacity bottom end first which will be a good upgrade for most of the 50,000mile trackday cars which will need a refresh soon. If we leave the heads alone due to cost and we redesign the cams & spring pack then match it with a custom exhaust, I would think that 500fwhp would be a comfortable goal for a road legal car, and of course the upgrade will probably also suit the 997GT3 engine as well so there is a pretty broad market to go at. The intention would then be to manufacture a 9m head/valve/spring/cam assembly that really makes the engine sing, and 150bhp per litre is definitely on the cards for an all-out race engine.

epj993

Great work, Colin! BTW, Southern California meets those requirements

Geoffrey

I was shocked at how much power the 996RSR engine put out. It was an early engine so it was still 3.6l, but we ran it to 8800rpm. I have never, ever in my life ever heard something as loud as that engine. It makes your ears bleed, even with earplugs. The engine had the 138mm rods and 19mm wrist pin slipper 2 ring pistons. A normal race GT3RS (prior model) is in the 425hp range at the wheels unrestricted. With the increased displacement with your crank, rods, pistons, that should improve upon it. Obviously the RSR engine is short hour life engine.

DJF1

And Vancouver too We have Whistler!

Fantastic results indeed...

Red rooster

Colin,

You would miss the Lancashire accent/ chip shops/ Warrington rugby team !!

Mind you ,down south its OK for a visit but too much sunshine and little rain to moan about !!

Now Nova Scotia ,Canada is much more like it !

Geoff

SimonExtreme

However, Colin, it would make it easier to forget the dire state of our football team and pretend we don't care. Seeing the footie news and results only occasionally makes the pain a little easier

NineMeister

Life is always yin and yang, so whilst Warrington Rugby is doing well (3 wins from 4 games) my favourite football team Leeds are still pressing the self-destruct button and are now firmly bottom of the Championship and look likely to be in the 1st division next year. Ho hum.

Red rooster

Colin,
Well what do you expect . Wrong side of the Peninnes !!

Geoff

David Ray

Collin - great job! Your shop always sets the bar at a extremely difficult level. Glad to see someone is still interested in pushing the 993's to their limits.

Luke

That's watercooled though

NineMeister

Thanks David. On a strictly comercial basis, working on the aircooled engine will probably never make sense, but we are in this for the long haul and the fact is that the aircooled cars will be around as long as there is fuel to burn in them. So, with a bit of luck there will always be someone looking to make one faster...

Smokin

When I hit the Mega Millions lottery on Tuesday I will be placing an order!

NineMeister

Thanks Rick, that's the spirit!