LB7: Breaking in Hellfire rings

[Sad Sack]

have put hell fire rings in with new forged pistons and having a time seating rings have put 1500 miles on it and still lots of blow by. Do they require heat or boost to seat. With my procharger I cant get a lot of EGT but lots of boost. I could disconnect the charger and get more heat but not sure which is best. Any ideas????

Don't know how to sign

 

[PACougar]

Who built your engine and have you asked them?

 

[Sad Sack]

Well its been a project and the machinist recommended them so I put them in. He did use the recommended stone when doing the honing He didn't say how to break them in. I believe he doesn't know as he wants me to go easy on the engine at first. I read that they need to be set under load

 

[paint94979]

Beat the piss out of them until they seat

 

[Sad Sack]

Been doing that, Thanks. Just trying to speed up the process

 

[Bustedknuckles]

Cummins guys run with no coolant for like 5 minutes at a set rpm to break thier engines in. You might want to look into that.

 

[Sad Sack]

New one to me. I will ,Thanks

 

[Stingpuller]

Rings

I have run Hellfire rings in a bunch of Duramax motors with no problems. What is the problem with rings not seating? If they have not seated in 1500 miles there is a problem.

 

[Stingpuller]

Rings

Did it have blowby from the start or after it ran for a bit? What kind of ring end gap did you use?

 

[Sad Sack]

Found the answer on another forum. Ran 7 full out runs today and blowby appears to be gone. Will do it again tomorrow.

 

[paint94979]

Told ya

 

[PACougar]

Told ya

Know it all

 

[paint94979]

Sent from my EVO using Tapatalk

 

[1ATony]

Welcome to the site.:hello:

Tony