We have come to the point where we can share a little more information. KA's bore is 102 mm. We looked at 104 mm, but after doing some investigation decided that 104 mm would not leave enough material on the liner walls.

We want the torque of a 4.0 liter motor. In addition to the stock crank, we had two stroker cranks made. One is 72.1 mm and the other is 80.4 mm. The difference in the two set ups is the rod angle and length. The longer stroke will have more torque ....... but also has some reduced longevity issues. Should have a final decision after the Holidays.

Either way, our displacement will be 3.985 L.

 

CJV ,

Thanks for sharing this info with us . I have quick questions are you sleeving this monster since your using oversize pistons 102 mm ? .
3.985L will be so bad with our two turbo's ... I can't hide my interest in your projet . If you have any chance of posting pics let your self loose for christmas

 

CJV ,

Thanks for sharing this info with us . I have quick questions are you sleeving this monster since your using oversize pistons 102 mm ? .
3.985L will be so bad with our two turbo's ... I can't hide my interest in your projet . If you have any chance of posting pics let your self loose for christmas

mt72,

These are the pistons which are SO1 coated sides, ceramic coated top and tops designed for high lift. To give you an idea how big the intake valves are, these are 102 mm pistons, take a look at the edges. The cylinder wall is barely large enough for the valve clearance.

 

****

 

OMG you made my day !!! The edge of those pistons are so thin that's crazy
those are custom production made piston right ?
Those pics just made my day !!! thanks

 

Yes, mt72, they were custom made to handle 1500 hp, clear our intake/exhaust valves and handle the lift of our custom cams.

I'll post a few more engine parts.

 

I could not imagine driving a 911 with that type of power, I have two turbos myself and they are super quick, both pushing between 525-575hp, I could not imagine a true 750 + hp

Christian

 

What type of weight is your turbo, CJV?

Christian

 

Note the Spanish case before bowtailing was performed.

 

Christian,

During our testing we have achieved 1400 crank hp already.

 

It was 3014 pounds. We are now installing widened cf front fenders and removing the front differencial, axles and driveline. We expect to get into the 2800+ pound range.

 

The case has been shuffle pinned to keep the crank from walking. Note the 962 three index oil pump. It has three pick ups (one picks the oil up off the heads). This pump costs over 8k today by itself.

 

The headers and hot side turbo's have been ceramic coated.

 

The valves are Inconnel. The material is the same as used in a Top Fuel Dragster. They are extremely light, and designed for high boost and nitrous. In addition the stems are coated with SO1 and the upper valve is ceramic coated.

 

The heads are ported and polished. The combustion chambers and exhaust ports are ceramic coated. The combustion chambers are micro polished.