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Old 09-03-2007, 10:49 PM   #1
Scooby Newbie
Member#: 102970
Join Date: Dec 2005
Chapter/Region: TXIC
Location: Waco, TX
2004 STi gt30r

Default USDM STi Camshaft Regrinds

Has anyone installed a set of reground USDM STi camshafts? Lets say the base circles are getting ground down by .022 to .032 inches increasing the lift by the same amount. Does Subaru sell shimless buckets that can accomodate for this much added lift?

I know Subaru has a boat load of different thickness buckets, but I wasn't sure if anyone new the maximum bucket thickness available. I have seen Cosworth shimless buckets too, but they are $27 per bucket. I haven't priced the OEM buckets.

I have noticed the price difference in cam regrinds and billet cut cams to be as much as $400, but billet cut cams may cost the same if I also have to pay for 16 new buckets. I do realize that buckets will wear and some may need to be replaced to have the proper bucket-cam clearance even when using billet cams.

I would like to hear from someone who has done both installs to approximate the price difference.
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Last edited by wittmer25; 09-03-2007 at 11:01 PM. Reason: EDIT: See Shimless bucket thread, didn't search :)
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Old 09-04-2007, 12:53 AM   #2
Scooby Specialist
Member#: 125304
Join Date: Sep 2006
Location: Crawford, TX.

What wittmer25 meant to say was if you buy a regrind and it's base is cut .020 to .030 to achieve more lift and then you automaticaly have to buy 16 buckets that are .020 to .030 thicker to set the lash, it might be cheaper to buy billit cams and use some of the original buckets and only need a few extra buckets. Hopefully the billit cams are the same base size as stock.

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