Visit The Dirt Forum for More Information

Author Topic:   Solid Lifter Question
wrenchturner10
Member
posted July 06, 2004 07:18 PM
if it's an iron block and heads set it at .028


Ego Racing
Member
posted July 06, 2004 08:36 PM
Iorn heads and block get larger and increase the length of the cam to rocker distance. So setting it a .028 it would end up somewhere over .030 hot


eenfield
Member
posted July 06, 2004 09:14 PM
.028" is the magic number. The engine and heads will grow when hot, causing the lash to shrink.

[This message has been edited by eenfield (edited July 06, 2004).]

sdhnc29
Member
posted July 06, 2004 10:29 PM
Your valve lash will increase with heat, not decrease. On iron head / iron block combo's, we will set the initial cold lash .004" tighter than recommended. This goes for solid flat tappet or solid roller's.

Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780
Check out my other business at www.solemnvow.com A special thanks to jammin for the awesome job he has done for me on this site!!


pacman #29
Member
posted July 06, 2004 10:36 PM
Set it .004 tighter cold.


willie
Member
posted July 08, 2004 04:18 PM
tighter .002 to 004 is what Howards cams
told me.


racer038
Member
posted July 08, 2004 08:00 PM
I'm glad you guys brought this up. I had read an article in the June 2004 Circle Track. On page 29 their contributor Steve Morley with "GRENADE! ENGINES" recommended setting the cold lash 0.002 looser than the hot spec. Since I wanted more bottom end response, I set the cold lash 0.004 looser than the spec. But after reading Steve and all responses, I'm going to get in there and reset all the lash. Thanks for your help.


udecide66
Member
posted July 08, 2004 08:51 PM
You should always set your valve lash hot, preferably at the exact operating temp of your engine. The only reason to set the lash cold would be for initial start up.

As an example of how much valve lash can grow, you can take one of our all aluminum late model engines. In my own personal engine, the valves set hot at .018"/.020". With the engine at room temp (cold), the intake lash can not be measured with a feeler gauge, and the exhaust lash is about .002". Hard to believe that thing's will grow and move around that much, but they do.

Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780
Check out my other business at www.solemnvow.com A special thanks to jammin for the awesome job he has done for me on this site!!


wrenchturner10
Member
posted July 09, 2004 02:15 PM
I broke the cam in last night following sdhnc29's advice and all went well, reset after in was hot and the adjustment was minumal, agian thanks for the good advice

Nick

Back to the Archives