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can someone school me on lash caps on a 426 hemi?

Posted By: toplescuda

can someone school me on lash caps on a 426 hemi? - 02/09/09 05:31 PM

never messed with any kind of lash caps whats the deal and how you do it?
ralph
Posted By: Cab_Burge

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 05:56 PM

You need to have the retainers and lash caps designed to work with each other, the Hemi lash caps are real short usually also so I wouldn't try and run them on a loose lash cam. I know racers that did and the lash caps would come off frequently and cause problems
Posted By: Mac's Hemi 64

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 06:21 PM

What kind of setup race motor, street?
Posted By: toplescuda

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 08:19 PM

595 310 roller 11-1 compression alum head street/strip
Posted By: Mopar_Rich

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 08:29 PM

Quote:

never messed with any kind of lash caps whats the deal and how you do it?
ralph




You have to use lash caps with a Hemi. It saves the valve tips and you need the extra surface area for the rollers. I use the Comp # 619 caps made for .308 valve stems. You have to use locks that are recessed for the caps. Use Comp # 610 locks (10 degree)

Attached picture 5012784-Comp619LashCaps.jpg
Posted By: Mopar_Rich

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 08:31 PM

Here's how the locks work with the lash caps

Attached picture 5012786-Comp610ValveLocks.jpg
Posted By: toplescuda

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 08:39 PM

how much are thay?
Posted By: B G Racing

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 09:04 PM

Quote:

Quote:

never messed with any kind of lash caps whats the deal and how you do it?
ralph




You have to use lash caps with a Hemi. It saves the valve tips and you need the extra surface area for the rollers. I use the Comp # 619 caps made for .308 valve stems. You have to use locks that are recessed for the caps. Use Comp # 610 locks (10 degree)


It's not and absolute must,but as Mopar Rich says if you want to save your valve tip(5/16)then it is best to run them.We don't normally use them on the Indy Legends(11/32)stem unless we need added clearence or to adjust geometry.Make sure that the retainer,locks and lash caps are compatable there are a few different lengths and depths on the lash caps.
Posted By: Dragula

Re: can someone school me on lash caps on a 426 hemi? - 02/09/09 09:14 PM

I prefer running them on engines like mine because it makes getting the valves out of the heads a couple seasons later. It beats up the lash caps instead of the valve stems.
Posted By: 3ddart

Re: can someone school me on lash caps on a 426 hemi? - 02/14/09 02:56 AM

i have the 619 lash caps, but 7 degree locks and retainers on my motor. the locks are not recessed and the cam is a crane hyd. roller 610 and 574 on the intake (1.7 rockers on the corners and 1.6 on the inside valves) and .555 exh. my ? is do i need to change the retainer & locks to 10 degree on this setup? street sometime strip car. thanks, dave
Posted By: Mopar_Rich

Re: can someone school me on lash caps on a 426 hemi? - 02/14/09 03:23 AM

The degree of the retainer and the lock must agree. So if you have 7 degree locks and 7 degree retainers you might be okay. But if the locks aren't cut or recessed for the edge of the lash cap you will have problems. It all depends on the locks. So mock one up, and see if the lash cap sits down on the valve tip as it should.
Posted By: Bob_Coomer

Re: can someone school me on lash caps on a 426 hemi? - 02/14/09 03:44 AM

Quote:

The degree of the retainer and the lock must agree. So if you have 7 degree locks and 7 degree retainers you might be okay. But if the locks aren't cut or recessed for the edge of the lash cap you will have problems. It all depends on the locks. So mock one up, and see if the lash cap sits down on the valve tip as it should.




I did that on the very same stuff.
Comp stuff here
741 retainers
610 valve locks
619 lash caps

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