zed Posted May 1, 2009 Report Share Posted May 1, 2009 So, got the engine block back today, looking good. Now I'm checking main bearing clearance - plastigage shows around .002 on all the crank journals - see pic. sorry for blurry pic... Pretty close to max wear according to the 620 manual. Is this ok? Don't want to touch the crank if I don't have to... Also, that seal in no. 5 main bearing cap worries me. How do you get it in? The book says to drive it in with a drift AFTER you torque the cap. No way is that gonna work - it will bend. Any advice? thanks Quote Link to comment
banzai510(hainz) Posted May 1, 2009 Report Share Posted May 1, 2009 (edited) Zed You mean the side seals???????? The book shows putting a bead of sealant along a edge and putting the side seals in with a drift/soft hammer/Fuck it hammer it!!!!!!!! I havent done one myself. I let the machine shop do it while they put the block back to gether. as for the crank if its not scared up just run the stock size bearings. I had 2 blocks done and both were just a rebearing w/STD size. Edited May 1, 2009 by banzai510(hainz) Quote Link to comment
datzenmike Posted May 1, 2009 Report Share Posted May 1, 2009 The side seals push in then there is a thin sliver of metal that is pushed in between the seal and the bearing cap that forces the seal tight against the block. Quote Link to comment
banzai510(hainz) Posted May 1, 2009 Report Share Posted May 1, 2009 (edited) datzenmike Just to let you know the nissan ones dont have the metal spring pc. Its a one pc rubberized looking seal plus you can put them in either way unlike the older 2 pc one I always forget which side u put the sping in. Edited May 1, 2009 by banzai510(hainz) Quote Link to comment
datzenmike Posted May 1, 2009 Report Share Posted May 1, 2009 Well it was back in the '70s. I'm sure the seal kit had them. Probably changed over the years. It was for a 71 521 L-16. Quote Link to comment
ggzilla Posted May 2, 2009 Report Share Posted May 2, 2009 Pretty close to max wear according to the 620 manual. Is this ok?Yes, as long as it is not more than the max clearance you are fine. Even if it is exactly as much as the max clearance, that is A-OK. Quote Link to comment
zed Posted May 2, 2009 Author Report Share Posted May 2, 2009 the side seals that came with the gasket kit are one piece. I'm afraid I'll screw it up if I try to put them in - and the nearest parts shop is 200 miles away... I know it's not right, but I'm gonna leave the old ones in, and just put some Wurth non-hardening gasket sealer over them... hope it don't leak Quote Link to comment
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