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  #16  
Old 08-11-2010, 07:45 AM
NeedForSpeed NeedForSpeed is offline
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Re: hydroulic vs solid lifters?

Quote:
Originally Posted by dynomatt View Post
It's been a while and there's posts somewhere here about what I (and subsequently others I believe) have done.

Get WRX heads. Strip valves, springs, retainers and collets. Throw away buckets.

Get SVX heads. Strip valves, springs, retainers and collets and throw them all away. Keep buckets.

Install WRX parts. Cutting new valve seats, may as well install new stem seals while they're all out.

Gut buckets. I used a lathe with a cutting tip and ran it around the edge of the hydraulic base. Time will tell whether this is a suitable option, but so far, none have failed. (when you do this you will realise that the shim sits on the bucket in a less than perfect way...it works, but less than perfect). I've since found that some shim over bucket options at 33mm exist, just remember that for large lift, the shim will be too small.

Measure clearances, and order shims that sit on valve stems to obtain correct clearance.

This is all pointless if you haven't got new cams that have more than 8mm lift BTW.

M
Was your cam base circle reduced at all?

When I was checking it out last, it seemed that a wrx intake valve in a gutted svx hydro bucket was very close to having a correct lash, close enough that no lash cap was necessary. How close in lash were you to using valves without lash caps?
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  #17  
Old 08-13-2010, 12:21 AM
dynomatt dynomatt is offline
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Re: hydroulic vs solid lifters?

Hi Ron,

yes my base circle was reduced as they were reground cams. By about 3-4mm I think. However, I thought shims ranged in height from 1.5-2mm

I didn't write them down unfortunately.

M
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  #18  
Old 08-13-2010, 08:58 AM
NeedForSpeed NeedForSpeed is offline
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Re: hydroulic vs solid lifters?

Quote:
Originally Posted by dynomatt View Post
Hi Ron,

yes my base circle was reduced as they were reground cams. By about 3-4mm I think. However, I thought shims ranged in height from 1.5-2mm

I didn't write them down unfortunately.

M
Thanks, that math adds up .

I believe that one of the cam/valve kits offered came with 2mm longer HLA valves, so, perhaps 4mm reduction in base circle is the max? Who supplied your lash caps?
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