leogurvich

Hey guys,

I have a built button end 1.6 motor running around 300whp @20lb of boost.

My exhaust valve is leaking in the third cylinder. Now it's time to pull the head off. What do you recommend I should change on the head since I am going to have to send it to machine shop.

I am not trying to go crazy a spend bunch of money, however I do want to do anything that would help me spool up better

i should mention that this is mostly track car, stripped na with 6 speed.

leogurvich

Should I just buy a remanufactured head from eBay and call it day or spend the money reworking the head out of my motor?

LeoNA

If your head is rebuildable, flat and not cracked I would work with a local machine shop to have it rebuilt. Aftermarket valves will be stronger and flow better. Manely or ST will be back cut and they might offer 1mm oversize to offset the sinking from cutting the seats. You might consider doing a little porting. Do not open up the bowl area/throat too much. Good quality springs are important.

sixshooter

iTrader: (12)

Double valve springs and titanium retainers

Watterson02

In terms of porting, a lot of people go for the short side radius of the intake (maybe the exhaust too, I'm not 100%) and then leave most of everything else untouched to maintain port velocity.