BigTexas68
New member
- Joined
- Mar 5, 2014
- Messages
- 5
First off I am new to this forum. I recently had a cracked piston in my LMM and went back with the 16.8cr Mahle Motorsport Delipped Pistons. The cylinders measured 4.056 and were honed using a bead hone. Oil clearances were well withing spec and std.bearings were installed and grade C headgaskets. It had a B on the right and C on the left. My compressor wheel had some damage and I installed a Batmo. I have 1,000+ miles on it now,no blow by and it has started to loosen up but it still feels down on power in the 2700-3200 rpm range. I have the rail pressure,boost and pulse width. It just feels like a dog. I'm down 8mph in 1\4 mile speed. I have stepped it up to my 390rwhp tune.
Does running these pistons require different tuning to make the the same power as the stock piston design or does it take longer to get the cylinders polished to get rid of the resistance?
It was a little noisy at first and I had to make some timing adjustments in the low rpm load areas. It seems to be taking the fuel better now.
Does running these pistons require different tuning to make the the same power as the stock piston design or does it take longer to get the cylinders polished to get rid of the resistance?
It was a little noisy at first and I had to make some timing adjustments in the low rpm load areas. It seems to be taking the fuel better now.