bearing clearances for a street/track motor
#1
bearing clearances for a street/track motor
I'm assembling a spare "rods only" motor for my track-day car. Hopefully, I'll never need to swap it in. I'm thinking that it will likely sit around for a few years and eventually get put into someone's street car.
I'm trying to decide on a good compromise for bearing and ring end gap clearances. With the bearing shells that I have I can get either .0022 or .0027 mains and .0023 or .0028 rod clearance. I'm leaning towards the tighter clearances
The OEM ring gap is .013. I think I could go to .016 and still not have too much blow-by. Anyone have an opinion on this?
I'm trying to decide on a good compromise for bearing and ring end gap clearances. With the bearing shells that I have I can get either .0022 or .0027 mains and .0023 or .0028 rod clearance. I'm leaning towards the tighter clearances
The OEM ring gap is .013. I think I could go to .016 and still not have too much blow-by. Anyone have an opinion on this?
#2
I opened up my ring gaps when I put my stock pistons back in. Just the top ring. They were around .011 when they came out and i opened them up to about
.016-.018"
Glad I did as the engine now sees 25psi+ on a gtx30. Not really any blowby as its still within stock ring gap clearance.
I went with standard/oem bearing clearances fwiw
.016-.018"
Glad I did as the engine now sees 25psi+ on a gtx30. Not really any blowby as its still within stock ring gap clearance.
I went with standard/oem bearing clearances fwiw
#3
I'm assembling a spare "rods only" motor for my track-day car. Hopefully, I'll never need to swap it in. I'm thinking that it will likely sit around for a few years and eventually get put into someone's street car.
I'm trying to decide on a good compromise for bearing and ring end gap clearances. With the bearing shells that I have I can get either .0022 or .0027 mains and .0023 or .0028 rod clearance. I'm leaning towards the tighter clearances
The OEM ring gap is .013. I think I could go to .016 and still not have too much blow-by. Anyone have an opinion on this?
I'm trying to decide on a good compromise for bearing and ring end gap clearances. With the bearing shells that I have I can get either .0022 or .0027 mains and .0023 or .0028 rod clearance. I'm leaning towards the tighter clearances
The OEM ring gap is .013. I think I could go to .016 and still not have too much blow-by. Anyone have an opinion on this?
Thread
Thread Starter
Forum
Replies
Last Post
shlammed
Miata parts for sale/trade
8
01-28-2014 09:31 AM
Sean
Insert BS here
23
01-21-2013 02:42 PM