PTV clearance issues
PTV clearance issues I put the 233/239 cam in, got the cam dot to dot, put head gasket on, put head and tightened it down. Slid stock 7.400" pushrods in, tightened rocker arms, then turned motor over and was given 0 clearance. I didn't get "held up", and I made 2 full revolutions, but it ate right through the clay and put really small indentions in my pistons.
-I am using checker springs
I decided I would put my stock cam back in and try it, it had clearance on the intake side but not exhaust.
Can anyone tell me what I may be doing wrong?
-I am using checker springs
I decided I would put my stock cam back in and try it, it had clearance on the intake side but not exhaust.
Can anyone tell me what I may be doing wrong?
If you are using checker springs with 7.400 pushrods your probably not collapsing the lifter any and its holding the valve open. Only run the rocker bolt down until you have zero lash and try it.
OK will do! Once if this does solve my problem, once my new springs are installed, I wont have a problem with this 0-lash thing will I? I'll just be able to tighten my rockers and be ready to roll?
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It's not quite that easy...You need to measure for the correct length + pre-load. How do you know 7.4 is the correct length?
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Joined: Jun 2011
Posts: 1,343
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From: Katy, TX
Read this Tyler, the document is still a draft but it should help you.
http://www.scribd.com/doc/137049285/...RAFT-20-Apr-13
http://www.scribd.com/doc/137049285/...RAFT-20-Apr-13
Highly doubt factory push rods will work. Buy you a comp checker, just 20$ from TSP. I actually have one. Do I want to use it as my pushrod when I check for ptv? Should I slide it in, tighten the rocker just until it begins to push my checker springs down, then turn the pushrod until it is snug with the rocker and that's the size I need?
I've never done anything to a car before so I'm just learning as I go.
I've never done anything to a car before so I'm just learning as I go.
I actually have one. Do I want to use it as my pushrod when I check for ptv? Should I slide it in, tighten the rocker just until it begins to push my checker springs down, then turn the pushrod until it is snug with the rocker and that's the size I need?
I've never done anything to a car before so I'm just learning as I go.
I've never done anything to a car before so I'm just learning as I go.
Correct. Then, if you are satisfied with your clearances, add your desired preload to the PR length and that's what you need for push rods.