Post by
slipnfall »
https://forums.nicoclub.com/slipnfall-u4227.html
Wed Feb 22, 2006 7:49 pm
Yes you are right, that is what my machinist *should* have done. Basically this was his first nissan bucket-style engine. He was hesitant after working on a suburu engine with shims/buckets that went awry.
I only paid for cleaning, valve guide/seal installation, reseating, and planing/surfacing.
When I first received the head back the cams were *way* too tight. I took it back and explained to him: if you're removing any material from the valves or seats, make sure to grind down the stems as well. So he ground them to get them close enough (on the lose side) without charging me for a full valve job.
So whatever, I let the engine break in, and just forked out the money to do it myself later on.
One question - the shims I received from Nissan had a single hole in each of them? I assume this is a revision to either prevent the shim from 'hydroplaning' on the oil underneither, or to aid in removing the shim(hydro-locking). The part numbers were old, from a microfishe. I looked at the cam lobes, they wouldn't contact the hole they were on the outer surfaces.