How are my oil clearances?
Thread Starter
Supreme Member
Joined: Feb 2000
Posts: 1,170
Likes: 0
From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
How are my oil clearances?
350, .030 over, 2bolt, balanced turned 10/10:
Mains:
1---.0015
2---.00125
3---.0015
4---.00125
5---.002
Rods:
00145-.0018
Checked with a plastigage
Looks like the rods might be a little tight?! If so what do I do about it?
Mains:
1---.0015
2---.00125
3---.0015
4---.00125
5---.002
Rods:
00145-.0018
Checked with a plastigage
Looks like the rods might be a little tight?! If so what do I do about it?
Senior Member
iTrader: (1)
Joined: Nov 2003
Posts: 574
Likes: 1
From: San Lorenzo, California
Car: 1987 Firebird Trans AM
Engine: 383 TPI...very soon
Transmission: TH700R4
I've often wondered what you are supposed to do if your clearances are off.. I mean if they are off, you probably already own all the bearings and stuff, or else you wouldn't know they are off. If you're putting everything back together, I take it everything has been machined, so what are you supposed to do now that the clearances are off? Anyone? Would that mean it's time to go back to the machine shop?
TGO Supporter
Joined: Aug 1999
Posts: 14,811
Likes: 1
From: Jackson County
i wouldn't put a lot of faith in plastigage but you're clearances look ok. if they're off you can swap bearing shells around. as long as the cranks is standard you can buy +.001 and -.001 bearing sets to let you open or tighten the clearance a little.
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