i haz simple solution for you buddy!
just simply limp the car to the nearest cliff, bridge, something of the sorts.
THEN, you get out. and shove it off the cliff. it will be all smiles bruh, i promise.
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06-25-2011
i haz simple solution for you buddy!
just simply limp the car to the nearest cliff, bridge, something of the sorts.
THEN, you get out. and shove it off the cliff. it will be all smiles bruh, i promise.
06-25-2011
This doesn't make any f*cking sense.
06-25-2011
If the valve seals were smashed, then that means the rocker is smashing the retainer all the way to the bottom, right? Thinking that through would mean the cam is higher lift than you think it is, the lifter is longer than it should be, the pushrod is longer than it should be or the ratio of the rocker is higher. I can't think of any other way this could happen. Any chance one of those parts are not the right ones?
06-25-2011
If the camshaft that I was sent was wrong... Then yes. But I was told that this is a VS cam, he told me positively...Originally Posted by Silver GTP
The rockers are stock.
Pushrods are stock.
Lifters are stock (and are now LS7 lifters).
G8 valve springs/retainers.
06-25-2011
have a picture of the engraving on the end of the cam?
06-25-2011
I don't, no.
06-25-2011
Since you have to pull it apart anyway, I would start by double checking the engraving on the end of the cam. I don't know if ZZP engraves the name on the end of the cam or just a number of some type. You may have to check with them to verify which cam it is. If it really is a VS cam, you should have plenty of clearance unless you had a massive brain fart and forgot to put the tray in under the rockers. I see you have the SSM90 set up too. Since you have the naturally aspirated heads, are there any differences between yours and the L67 heads that could cause a clearance issue like this?
06-25-2011
You bring up some good points. I wish I saw what the engraving on the cam was. The tray is under the rockers. I'm not sure if there are different clearances between L67 and L36 heads. Someone should know. I think we are onto something with the too much lift scenario. The valve seals were all smashed.
06-25-2011
Would stronger springs solve this? If that was the problem.
06-25-2011
No. A problem from the wrong springs would be coil binding. If your setup is driving the retainer down into the valve seal, it is a matter of clearance. Modified retainers would give some extra clearance to the valve seal. As bad as the pushrods got destroyed, I think you might need more than that to fix your problem.
06-25-2011
I will lose my mind of I got sent the wrong cam.
06-25-2011
I turned the engine over by hand and noticed one valve was making the metallic noise at a certain spot. I isolated it to the exhaust valve on cylinder number 5. I pulled the valve spring off and sure enough, the valve seal was smashed. The outside of the valve guide has also been contacted. There is obviously a clearance issue.
Last edited by Bedwards; 06-26-2011 at 12:52 AM.
06-26-2011
We measured the clearance from the seat of the spring to the top of the valve guide shoulder. It was just over 22 mm. Add the seal which is about 4 mm. The spring compressed 10 mm to become about 32 mm. The retainer is 9 mm thick. Therefore when the spring is compressed, the retainer is sitting at 23 mm high. They are interfering. I need about 3-4 more mm of clearance.
06-26-2011
If I use my old retainers, with 7.00" pushrods, the retainer should clear the valve guide. Can I do that? Or would I need the valve guides machined?
Last edited by Bedwards; 06-26-2011 at 10:30 AM.
06-26-2011
I measured pushrod travel, and I'm getting very close to the VS cam lift specs. So thats good news. However, I noticed my valve springs are all around 1.6" installed height. Why would they be lower than 1.8"?
Last edited by Bedwards; 06-26-2011 at 02:50 PM.
06-26-2011
wrong retainers or wrong springs.
granted the valves are stock.
06-26-2011
I put an original spring on with original retainers, and the install height was still only about 1.6".
06-26-2011
Oh ****. My keepers are upside down!!! How the hell did I mess that up? I wonder if that's all this is!?
06-26-2011
that might do it.
whats the spring height now?
06-26-2011
Not sure. I'm not home anymore, I'll have the check it tomorrow. Or get my dad to change it and measure it. I'll keep you guys posted! I think I'm getting closer!
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