Piston Ring Gap Info Needed
02-21-2011, 03:54 PM
#1
Teching In
Thread Starter
iTrader: (12)
Join Date: Sep 2009
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
Piston Ring Gap Info Needed Okay, Im almost through with being finished with my shotblock. I have a ls1 honed to 3.905. Je Piston's, Eagle Rods, Fully Balenced rotating assembly, clivete bearings. TSP LS6 oil pump, torquer v3 and a double roller timing set. Now i orderd the JE Piston Rings with my pistons, i was under the impression that these piston rings didnt need to be gapped prior to installation. which is how i felt after ordering them and talking to a person at JE. The rings were VERY expensive compared to helfire rings and such. Now the question is should i have gapped them? Or are they fine how they are. They are all in everything is together and i have yet to put the heads on. Just want to make sure im not looking for a problem with this. I have built many DSM's without gapping the rings and no problems there. They were "pre gapped" rings however. Just not sure where to go with this. Pull them out and gap them accordingly, or leave them alone and expect no damage or anything due to this? Thanks!
02-21-2011, 04:59 PM
#2
are the specced out for that final bore size? I am the complete opposite, I have always bought file to fit rings and set my own gaps. I would say that if they were specced to that final size and the machine shop got it to that bore size setting it up for your piston to wall clearance that they are prolly real close and consistant. However you have no way of knowing for sure unless you pull a rod and piston and remove the rings and measure. You should have measured them all beforehand anyways and wrote them on a build sheet so you would know,,and then you wouldnt have this eating at you.
02-21-2011, 09:17 PM
#3
The Machinist
iTrader: (1)
Join Date: Dec 2007
Location: NH
Posts: 119
Likes: 0
Received 0 Likes
on
0 Posts
^^ 2nd that. I hope you at least checked the ring end gap to see that it was at the spec in your paperwork. If you didnt even check it, then plan on pulling the engine back apart. I would never assemble ANY engine without checking gap.
The best thing you can do is check and set the gap yourself so you know its right.
Besides that, you always should break all the sharp edges on the ends whether you file them or not.
The best thing you can do is check and set the gap yourself so you know its right.
Besides that, you always should break all the sharp edges on the ends whether you file them or not.
