Hey im starting to put my short block together and slide the first compression ring into the cylinder and checked the gap and its like .022 and it should be no more than .019 is this to much gap? Did i get a bad set of rings or what i checked the part number and there je's 81.5 rings and my block is bored to 81.43. Whats wrong here? I had the ring in the cylinder and i used the piston to slide it down to the skirt like shown in evans write up thanks

 

Possible that the machine shop bored the cylinders too big. Do you know for sure what your piston to wall clearances are?

 

the bores measure just over 81.4 clearance is .009

 

if it is .009 in inches that is a little over double what you need. Most forged pistons require .003 to .005 piston to wall clearance for turbo applications.

 

Yep. That would explain it. You have wayyyy too much piston-to-wall clearance. Time for a new block unless it's sleeved.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by koolaid3246 &raquo;</TD></TR><TR><TD CLASS="quote">the bores measure just over 81.4 clearance is .009</TD></TR></TABLE>

how did PMI get those clearances? is that what you told them you needed?

 

do you guys really think he would notice a difference from that.

i've seen worse clearance issues that this & things have worked out fine.

any more insight on this would great...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Running925 &raquo;</TD></TR><TR><TD CLASS="quote">do you guys really think he would notice a difference from that.

i've seen worse clearance issues that this & things have worked out fine.

any more insight on this would great...</TD></TR></TABLE>

notice a difference between the piston to wall clearance or the ring gaps?

 

the ring gaps

 

there is nothing wrong w/that ring gap... but 9thou piston-wall... thats a problem

 

Ya .009 is what JE told me when i called to check what it should be. Im going to call them again wednesday and see whats going on and if they told me the wrong clearance im gonna be pissed. Atleast i got another block i can have done but would still suck ***.

 

0.019 for the top ring and 0.022 for the middle ring or something real close to that..

but your piston to wall clearance is a shitty deal...lots of piston slap.

 

Well found out hte guy at je told me the wrong specs there supposed to be .003 what a dick. Guess im sending this one off to be sleeved now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZzZCivicZzZ &raquo;</TD></TR><TR><TD CLASS="quote">The thing about calling JE is, everytime I call them, the guy I talk to seems pretty rude and has a "Dumbass. I know more than you and you are stupid." kind of attitude, or at least he comes off that way.</TD></TR></TABLE>

CP

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by koolaid3246 &raquo;</TD></TR><TR><TD CLASS="quote">Well found out hte guy at je told me the wrong specs there supposed to be .003 what a dick. Guess im sending this one off to be sleeved now.</TD></TR></TABLE>

that hardcore sux.. sorry to hear that man..