ibcmoore
New member
- Joined
- Apr 2, 2008
- Location
- Embedded...just north of Tijuana
oops...car looks great though.
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Yep. I don't really know what to credit it to. Now I'm just trying to decide if I want to pull the head to make sure everything's okay.
Stuck lifters wouldn't do anything up top, because the lifter wouldn't be moving. Presumably it would massively chew up the lobe and lifter.
Almost has to be sticky valves on the exhaust. Was the head rebuilt? They may simply have been too tight.
If you need some rockers I've got a couple of unused sets kicking around the garage. I could pull a left or right handed one off and pop it in the postal system.
Well if you think about it it looks like the issue would have to be on the valve side, that is if something did actually get stuck and this isn't just a failure of the rocker. If the lifter or pushrod got stuck then the valve would just hang open, but if the valve got stuck then there would be pressure on both sides causing that failure....
Did you check for valve spring coil bind when installing the hi perf cam?,
Don't overlook the oil feed if you shim the rocker posts.
Well it appears i'm getting some coil bind. There's about .007" clearance between the coils and I'm sure at 2000+ RPMs they are touching. Going to try shimming the rockers .030" tomorrow. Kinda seems like the diameter of the coils is a little more than it should be.
Don't overlook the oil feed if you shim the rocker posts.
Well that's a bummer. I knew I should've just had them put the Isky double valve springs in instead of these. Oh well. I guess I can forget about Carlisle and just get my car more sorted for next year. No biggie. This will give me a chance to go ahead and get my head shaved and rebuilt the right way.
You might want to read up on valve trains and how they work, and how to properly check for coil bind/spring travel *especially* when using non Volvo cam, springs, and whatever.
It'll save you a lot of money in the long run. One cannot just slap together a engine without *measuring* things. Now you see why good mechanics get paid good money...........