additional piston to wall clearance for 200 shot
08-08-2013, 07:17 PM
#1
additional piston to wall clearance for 200 shot going to be using a 200 shot of nitrous.
Pistons are Mahle 4032's. Pistons mic out at 3.902" and are made for 3.905" bore. That means Mahle has built .003" of clearance into their piston. Manufacture recommends an additional .001"-.003" of clearance for "severe duty applications (i.e FI, Nitrous). I really don't want a ton of noise and would like to keep it tight without being to tight if you know what i mean. Im thinking an additional .001" of clearance for the 200 shot (3.906"). Thoughts/ opinions. Think i should go .002" on the additional clearance?
Pistons are Mahle 4032's. Pistons mic out at 3.902" and are made for 3.905" bore. That means Mahle has built .003" of clearance into their piston. Manufacture recommends an additional .001"-.003" of clearance for "severe duty applications (i.e FI, Nitrous). I really don't want a ton of noise and would like to keep it tight without being to tight if you know what i mean. Im thinking an additional .001" of clearance for the 200 shot (3.906"). Thoughts/ opinions. Think i should go .002" on the additional clearance?
08-08-2013, 09:43 PM
#2
When my machine shop honed/bored my block and de-burred my rings, they allowed for .004 clearance. This information was direct from Wiseco, and they said that was good up to 15 psi of boost and they didn't put a number on the nitrous. I am only planning on shooting a 150-200 shot. Maybe that gives you an idea.