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Solid Lifter Lash Caps

 
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 704
Location: Maysville, Colorado

PostPosted: Sat Feb 10, 2018 9:04 am    Post subject: Solid Lifter Lash Caps Reply with quote

What are the recommended brand of lash caps for use with solid valve lifters ? I have stock 9mm valve stems. I understand that old Alfa Romeo ones fit. Are there other brands that fit, most seem to be 8mm and smaller or inch size? Could I use the .375 ones which are about .020" larger?
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Poco a Poco, '80 future track car
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motormouth  



Joined: 28 Feb 2010
Posts: 107
Location: Canton

PostPosted: Tue Feb 20, 2018 4:15 am    Post subject: Reply with quote

I have some of these for my big valve kit... haven't installed them yet though

under "Manley 8mm Lash Caps"

http://garage.ideola.com/prod-EngineMods.html
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 704
Location: Maysville, Colorado

PostPosted: Tue Feb 20, 2018 11:23 am    Post subject: Reply with quote

Yes, but standard valves are 9mm. Talked to machinist and were going to start with new longer valves, then see how accurately we can measure and maybe go with the Alfa ones as tho more expensive at about $6 ea from Centerline, the cost of multiple disassembly and reassembly of the head to shave the valve stem can easily overwhelm the initial cost. If going to US made will use either Comp Cam or Manley for 3/8" valve stem which are generally .080 thick some at .060 to .120. Alfa shims range from about .055 to .150 by .001 increment. The under size reground cam and solid lifters make our beginning gap with stock valves in the .180 to .200 range. That is all theoretical as we roughly measured the cam lobe base diameter then measured a solid lifter and stock one with unknown adjuster screw and did some rough math. We have a lot of measuring to do yet before buying anything!
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kevingross  



Joined: 15 Apr 2015
Posts: 22
Location: Stow, MA, USA

PostPosted: Sun Mar 11, 2018 1:29 pm    Post subject: Reply with quote

I'd check with Del West.
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11350
Location: PacNW

PostPosted: Tue Mar 13, 2018 12:05 pm    Post subject: Reply with quote

No contest. . .

http://www.precisionshims.com.au/
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 704
Location: Maysville, Colorado

PostPosted: Wed Mar 14, 2018 12:15 am    Post subject: Reply with quote

Rasta How in the world do you find this stuff? That might actually work.

The Del West titanium stuff is amazing, unfortunately I'm not building a $25k motor so its a bit out of my budget. I just want a motor I can get 40-50 hours of run time out of and would like to use a reground cam that I have on hand, which would get a few more HP. The combination of the thinner solid lifters and the reground cam is making it difficult. The Parner lifters are about .110" thinner than the "typical" stock lifter. I measured about 10 with
various screws and took a rough average.
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ideola  



Joined: 01 Oct 2004
Posts: 15489
Location: Woodstock IL

PostPosted: Wed Mar 14, 2018 3:52 am    Post subject: Reply with quote

Wait wait wait, hang on.

The Manley lash caps that I provide with the Sten Parner lifters are a hat style that you can "seat" onto the riser on the underside of the lifter. You don't need to install them onto the valve itself.

The big issue will be if you are resetting the valve tip height by installing new or reworking seats / valve train. If you're attempting to install solid lifters into an existing head where you're not doing any other work, THEN you may need to purchase the Precision shims that Rasta linked to.
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 704
Location: Maysville, Colorado

PostPosted: Thu Mar 15, 2018 3:31 am    Post subject: Reply with quote

Ideola, very interesting thought. The difficulty here is the reground cam which is smaller in dia. We are going to rework the seats, then test assemble the head without the valve seals and measure clearances. With the reground cam we will either use a pair of lash caps, one on the valve and one on the lifter, get the precision shims, or if we don't like what we are seeing just punt and stick the stock lifters and cam back in.

Another thought I had was to get some hardened drill rod about .400 dia, cut it off into about .070-.080 lengths as shims and tuck them up into the stock lifters as their pockets are about .150 deep. We rejected that one for now.

This is a very good demonstration of why not to use reground cams, I just got a good deal on it several years ago and would like to use it.
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