Head work

[sl2fast]

Alright you head guys, ive been thinking of how im going to approach this, i want to do some head work but need some q's answered first to see if it is feasable. my idea is as follows;

99 head (roller rocker style) method to my madness
sda cams
high temp valve seals
flat faced vavles (the early year LL0 ones) Will these work on the 99+ head?
Exhaust side port matched to the obx gasket Is this too large for NA?
Intake side not sure how large to go
head decked what is the maximum i can go? .080? i dont remember

I am planning on doing some tuning with an safc2 and a wbo2 as well. How well would the wbo2 work on the obx, since the reading would only be from two of the runners?

Who on here does head work, was it greenmonstah? personally i dont wanna touch the intake ports, i hear that can be tricky.

Tyler

[DasPirate]

The limit for head decking is .050, and yes GreenMonstah does head.

[SupraCharged007]

.080 is too much

and the flat valves wont fit in that head

[S.Bretz]

You don't want your exhaust ports that large unless you are using a heavy shoot of nitrous, ot plan to run 10+ psi on a superchager.

[sl2fast]

10-4 you guys are clarifying things for me

.050 head decking check
flat face valve are a nope
and dont go that big on exhaust ports

[project_sl-2]

+1 on what Sam said.

Exhaust side you want to maintain velocity as much as possible.

The more you open up the ports w/o increasing volume the more torque you lose down low and the higher up the RPM band your power shifts. Open them up too much can make your daily driver suck balls and you would have to keep the car in the upper rpms to see any gains.

Also you don't want to completely match the gasket on the exhaust... you want a slight lip to prevent any reversion

maintaining high velocity in one dirrection...

[sl2fast]

Also you don't want to completely match the gasket on the exhaust... you want a slight lip to prevent any reversion

true, never thought of that

[getz999]

Also you don't want to completely match the gasket on the exhaust... you want a slight lip to prevent any reversion

true, never thought of that

both ports are matched to the gasket on my head [img]{SMILIES_PATH}/shock.gif[/img]