Don't know about the highest. I have 104 mm pistons and a 2mm stroked GT3R crank.

 

Does anyone have any numbers from sonic testing these 996's for cylinder wall thickness? That will certainly be a bore-limiting factor. Also custom piston and ring packages can get real pricey. Is anyone building a forged stroker crank, or is everyone just gaining arm length by welding up and offset grinding the rod journals? The downside of the stroker engine, of course, is increased piston speed and all components do have their limits.

 

I haven't seen anyone bore a cylinder liner on a 996tt. They can be obtained in 100, 102 and 104 mm sizes. I do not know of any forged stroker cranks available.

 

CJV- what type of cylinders got you to 104mm?

 

I got them from Woosner (Germany).

 

Sorry for the threadjack, but:

I'm sorry but that just sounds so dirty.

 

Unless someone knows something different. The largest crank that can be used on these cases is 80 mm and the largest barrels are 104 mm. 4.185L ?

 

102 MM is more safe in my opignon

 

Hi... First off are we talking the turbo/gt3 or the n/a motor? Second what rod angle do you think is "safe"? Plans on boosting this motor. Here to assist you, Tim

 

I would be curious to see the rod ratio on these engines

 

yes,you have right,koro had a 4.6ltr

 

How much for the kit?

 

Hallo!

Since Koro seems to be dead by now, information about them is hard to find.

The pricelist attached to your post is great, so I was wondering if you have any further information or pricelists?
Is there a additional pricelist for Carrera models?

 

sorry,i dont have any other info's...but in april i am planning to visit his area so i will go to his old workstop to see what happens...

 

Great, keep us posted!
Since Koro holds some patents, it would be interesting to find out if anyone uses them, because it seems that all other stroker kits are stuck at 4.2 liter...