just talk to engine builder says i have 4.5 to 5 thou piston to clearance notice a little to much skirt wear only 6k on first fuckup, says he usualy sets forged pistons 6 to 7 thou. what do ya think? also was wondering if I want the crank nitraded. do you guys nitrade your cranks after turn?


thanks
96gsr
eagle/je/bg
294/196

 

what kind of pistons are they, they should have a recommended clearance. clearances are partially depending on if they are low silicon or high silicon pistons. some go a bit on the tight clearances to keep the blowby in check and it will cause the wearing of the rings, piston skirts, and cyl walls.

 

they are je pistons i think they rec 3.5 thou but machine shop didnt like skirt wear engine builder says he has set them up 6 thou before and no problems or piston slap

 

sounds quite loose to me.

 

what do you recomend for piston to wall clearance? what size acl rod bearins can i get? what about nitrade crank reccomend or not? also does any one know how i can get a hold of flamenco-t or stan need axles want know if they are still 379 tried to e mail but no answer

 

Use what JE says to use. That skirt wear could be from the fact that the clearances are so loose.
Good luck trying to find a shop that can do the correct clearances on all cylinders. Also double check the piston clearances after a bore/hone has been done!!

Ben

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quickergixxer &raquo;</TD></TR><TR><TD CLASS="quote">what do you recomend for piston to wall clearance? what size acl rod bearins can i get? what about nitrade crank reccomend or not? also does any one know how i can get a hold of flamenco-t or stan need axles want know if they are still 379 tried to e mail but no answer

</TD></TR></TABLE>Just IM Flamenco-T..I think he might be at the nhra race in dallas tonight. Stan loves to sell axles
JE clearance usually .004"
Nitrade crank not necessary for you.
What size ACL's do you need? They are one size fits all but do come oversized if you had your crank reground.

 

I ran .0029" in my 75.5mm bore D16A1. I used Endyn pistons. The setup is surprisingly quiet (it doesn't sound like a diesel at startup).

So far, I've got 1200 miles on the setup and it's runnin' like a champ.

Sonny

 

That is very loose. But where did they measure the piston diameter? Most pistons aren't perfect cylinders (by that I mean the diameter isn't always the same at the skirt as it is say above the top ring land). JE should have recommended a piston clearance, as well as a specific point on the piston from which the bore diameter is measured. Always listen to JE for specs over some machine shop "expert" (sorry, not that that helps you too much now).