I was wondering if you replace the valve springs and retainers on a VQ, is it ok to leave the old valve oil seals in there or should they be replaced? Im currently working on a motor build and im attempting to piece together a high reving setup. I really don't want to buy 24 oil seals and keepers if I don't have to. Also can anyone recomend a tool to compress the valve springs so I can remove the keepers? Im using a fitting with a compressed air source, I just need a tool to compress the valve springs safely.

On another note the 350Z rev-up oil pump should be here this week, so I will see how the rev-up pump compares to a stock oil pump.

oh and please no lectures on high reving engines.

 

If the engine has less than 100,000 miles and has been taken care of, then I wouldn't bother with the oil seals.

Sears sells a valve spring compressor that works quite well. The heads have to be removed from the block for it to work, though. I'm not aware of any valve spring compressor that works with the VQ30 heads still bolted to the block.

 

OK a little update.

http://www.lislecorp.com/tool_detail.cfm?detail=550

I tried that tool and it works great at getting the valve keepers off, you just push the aluminum piece onto the retainers and it pops off the keepers. There is a magnet inside it that holds the retainer and keepers once they come loose. You can remove the springs on a head in a matter of minutes.

However the assembly to put the keepers back on is assinine, it doesn't seem to work for me. All it does is shove the retainer and keepers down with the valve and spring. Good thing these are junk heads I have on my workbench, cause the valve got bent slighty when I tried to use this stupid thing.

So there is no one out there with a valve spring tool that works with our heads installed???

 

So whats the word on these type valve spring compressors?

http://www.thetoolwarehouse.net/shop/SP-91400.html

Ive been searching online and these type of compressors keep coming up, hell even the Haynes manual shows them using one on a VQ.

 

how high do you plan to rev?

 

I know this thread is old but i just had to ask. I bought some valve spring compressors from sears and the part that's supposed to grab onto the spring doesn't even come close to being able to fit in there. Which ones did you get?

This is on VQ35 heads, btw...

 

Sorry, I forgot all about that issue. I made a spacer out of some PVC pipe (1" diameter and a couple of inches long, I think) that takes up the gap.

 

I ended using a piece of the rod for my floor jack. Worked perfectly. Thanks for the spacing idea.