2 questions

[Spyder]

Question 1:

I have a bad 1g head. It has been resurfaced and the cam journals have been line bored possibly, but they have been honed. To put it simply the head is shot. I spoke with Toybreaker and he wouldn't touch it.
Should I just take it to the scrap yard or is there still a use for it?

Question 2:

I am looking for specs on install height of eve 8 valves. Does anyone have a good source to find them? I have found one forum that lists some from some guy he knows but I would obviously prefer a credible source.

Thanks all.

 

[iceman69510]

Aren't the Evo valves dimensionally identical to the stock valves? I think they are, at least I know the intakes use the exact same replacement part number. If so, I can't think of anything you need to do differently. Are you running Evo springs too?

 

[Spyder]

Yeah, springs and retainers.

 

[EHmotorsports]

1.560 is the springs installed height in a 1g head.

 

[Spyder]

When I spoke with Toybreaker, he mentioned the springs need to be set up according to evo head specs. Those are the numbers I am looking for. Are they the same?

 

[EHmotorsports]

You can add a 30 shim and increase the spring pressure to 75 ish or run 1.560 to get 60-65lb pressure.
Are you running lighter valves? If so a lighter spring pressure is ok. What cams are you using? Make sure you don't go over .406 lift or you will coil bind with the evo springs.

 

[Spyder]

stock cams. trying to find oem evo sodium filled valves.

 

[EHmotorsports]

Cool I just finished the same setup on my car. Works great

 

[Spyder]

I am having a hell of a time finding valves. Where did you find yours?

 

[EHmotorsports]

I picked everything up at one time from Thedsmguy.

 

[Spyder]

Update on my progress.

I couldn't find any evo valves so I got a set of supertech valves from jnz. They are the same weight as the stock 1g valves. Am I going to have any issues with using the beehive springs and retainers?

Should I use the 1g install height?

 

[EHmotorsports]

If you can use the evo install height. The reason there is an install height is to make sure you have the proper spring pressure at rest. I am using stock 1g height with no issues but then im not revving it to 9k haha.