Tomie 270 10.8 Procams And Tomie Buckets

[ahh 33 s2]

hey all, ive got my head in at the shop getting a total rebuild and upgrade,

the guy is under the impression he will need the standard shims aswell as the tomie shims that are supplied with the buckets,

i didnt think this would be the case as the tomie buckets are suited to cams with more then 10.25 lift,

me not really knowing what i am doing thru the old buckets and shims out,

so do i need to rebuy standard shims to get this to work,

what likely price is involved with new nissan shims

cheeers

Dan

[Beer Baron]

we'll he'll need whatever shims he needs to get the valve clearances correct. so yeah he'll either need to make up some appropriate thickness shims or buy the right ones from nissan. it's not a matter of 'standard' shims, he needs to measure the valve clearances, compare that to the stated figures in the manual and then buy and fit the appropriate shims.

[Nee-san]

Just to clarify Beer Baron means 1 set of shims only (total) not both IE on top of each other or something silly Lol.

[bigmikespec]

What base circle are the cams? I would go with the Tomei +1mm buckets and a thinner shim if you have the $$$, or is that what you already have?

[ahh 33 s2]

Yeh that's what i thought I had. Nengun lists them as lifters for cams with more the 10.25 lift, and since I got 10.8 cams I got these to suit, thinking it would make life easier for machine shop

[Beer Baron]

yeah the tomei buckets are thicker to compensate for small base circle cams but you still need shims to set the valve clearances. they don't come with any shims. reason is every car is different. hell every valve can be different. the ONLY way to do it is measure, compare to desired clearance, buy appropriate shims and install them in the buckets.

you can buy the shims from nissan as needed (cost practically nothing), or with the right sized punch you can make your own out of sheet metal. plenty of people do it that way. you can just get off cuts of various thicknesses and punch out the little circles you need.

[sucram]

He really only needs 1 shim and he can work out what the clearance is to order new shims

A full set will make it easier instead of doing 1 at a time.

I seen a guy on ebay selling stock shims for $75

doo doo gave me details of a guy who makes shims in melb

The website is precisionshims.com.au, all the details are there- the number is 03 9723 0199 and speaking to the guy is much easier when you order.

[ahh 33 s2]

so turns out nissan have 70 variations on the R32 RB26 valve shim, and at 20-23 bucks each is not an option, so second hand is now my only option, hopefully found a set for $75

[zebra]

http://www.precisionshims.com.au/a/Precision-Shims-Australia