Need RB26 Valve lash shims

Discuss the RB20, RB25 and RB26 series engines.
boostedh23a1
Posts: 281
Joined: Tue Oct 17, 2006 1:37 pm
Car: Datsun 240Z
Datsun 280Z
Location: Beaufort, SC

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Nissan part numbers pn followed by thickness
(1) 1322905u72 2.98mm
(2) 1322905u69 2.935mm
(1) 1322905u70 2.950mm
(3) 1322905u64 2.86mm
(2) 1322905u65 2.875mm
(1) 1322904u19 3.310mm
(1) 1322904u17 3.28mm

thats 11 (grabbing one of the slightly smaller ones incase the big one is too big.)
Can anyone get these?


Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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boostedh23a1
Posts: 281
Joined: Tue Oct 17, 2006 1:37 pm
Car: Datsun 240Z
Datsun 280Z
Location: Beaufort, SC

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12.3 diameter or 11.5? I measured one and it was 12.1 if memory serves me right. Car is at my shop at the moment.

Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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I am not sure, engine is installed and can't measure them. If you email/call them, he will tell you what size he always uses for RB26s......He never asked me when I ordered mine, twice.....

boostedh23a1
Posts: 281
Joined: Tue Oct 17, 2006 1:37 pm
Car: Datsun 240Z
Datsun 280Z
Location: Beaufort, SC

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Probably the 12.3. How. Long did it take to get them?

julio
Posts: 374
Joined: Fri Oct 06, 2006 1:18 pm
Car: RB26 AWD converted S14

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12.3mm is the correct size. I only have shims that will satisfy the 2.875mm sizes, none of the rest. Its probably easiest to get them all from precision shims. I ordered some from Japan and then some from them and the ones from aussie land came first.

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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good to know you can buy these now. when i shimmed my motor back in the day i made a spreadsheet with all the thicknesses needed vs. what I had. Then mixed and matched all 24 shims to get whatever I could to fit within spec, then took about half of them to get ground down at a machine shop. Obviously you can't add thickness if you need to, but it ended up working out well for me.

boostedh23a1
Posts: 281
Joined: Tue Oct 17, 2006 1:37 pm
Car: Datsun 240Z
Datsun 280Z
Location: Beaufort, SC

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bah! got them in today all are in spec now except for 2.. son of a b****.


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