Shim under/Shimless buckets for MZ/VZ possible? - Page 2

singleslammer · 08-14-2007, 11:24 PM

I may have missed this but what is the advantage of shimless buckets?

Toysrme · 08-15-2007, 12:19 AM

almost impercievalbe reciprocating weight reduction.

the big thing is that since the shim is under the bucket, when using custom cam profiles (especially when using re-ground cams that require making up alot of distance via the shims). the aggressive cam lobe won't hit the shim ontop of the bucket & knock it off. which can happen.
so the high revving shim/bucket combo's put the shim under the bucket.

singleslammer · 08-15-2007, 12:25 AM

thanks for the info. Thats very helpful for what I have in mind.

Weasy2k · 08-16-2007, 06:32 PM

Yea toys got it pretty much....shimless is what i will be using on my higher rpm n/a builds as i will compensate for clearances issues by using longer tip valves which i have.

singleslammer · 08-16-2007, 07:20 PM

well considering thats what my new goals seem to be panning out to be, that is VERY helpful info

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Posted By	For	Type	Date
Toyota MR2 Message Board	This thread	Refback	08-15-2007 12:44 AM

08-14-2007, 11:24 PM	#21 (permalink)
singleslammer Soon to be feeling the v6 Join Date: Oct 2006 Location: Columbia, MO Posts: 266 Thanks: 8 Thanked 1 Time in 1 Post iTrader Rating: (1/100% )	I may have missed this but what is the advantage of shimless buckets?

08-15-2007, 12:19 AM	#22 (permalink)
Toysrme Cage Fighter Join Date: Oct 2005 Posts: 681 Thanks: 4 Thanked 23 Times in 17 Posts iTrader Rating: (-1/0% )	almost impercievalbe reciprocating weight reduction. the big thing is that since the shim is under the bucket, when using custom cam profiles (especially when using re-ground cams that require making up alot of distance via the shims). the aggressive cam lobe won't hit the shim ontop of the bucket & knock it off. which can happen. so the high revving shim/bucket combo's put the shim under the bucket.

08-15-2007, 12:25 AM	#23 (permalink)
singleslammer Soon to be feeling the v6 Join Date: Oct 2006 Location: Columbia, MO Posts: 266 Thanks: 8 Thanked 1 Time in 1 Post iTrader Rating: (1/100% )	thanks for the info. Thats very helpful for what I have in mind.

08-16-2007, 06:32 PM	#24 (permalink)
Weasy2k What is an MR2? Join Date: Mar 2005 Location: Vancouver, BC Posts: 8,891 Thanks: 33 Thanked 82 Times in 68 Posts iTrader Rating: (9/100% )	Yea toys got it pretty much....shimless is what i will be using on my higher rpm n/a builds as i will compensate for clearances issues by using longer tip valves which i have.

08-16-2007, 07:20 PM	#25 (permalink)
singleslammer Soon to be feeling the v6 Join Date: Oct 2006 Location: Columbia, MO Posts: 266 Thanks: 8 Thanked 1 Time in 1 Post iTrader Rating: (1/100% )	well considering thats what my new goals seem to be panning out to be, that is VERY helpful info