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Jackstand Queen · 07-28-2009, 08:24 PM

To those who might be considering a rebuild of your cylinder head.

I recommend Supertech brand valve guides. They are made of bronze, they look good, and have a more aerodynamic end just underneath the valve seat.

1. 4age valve stems are 1/100th inch too large to fit inside the guides. Clearance is critical, so you can't just casually drill it out to fit.

2. Do a google for a 15/16th's inch Chuck Reamer. Buy one, this will ream out the valve guide to a perfect valve stem to guide oil clearance.

3. The mounting point for valve seals will not accept a standard 4age valve seal. Supertech manufactures valve seals to fit their guides. The part number is VS-T6SM, order 16 of them.

4. You can find Supertech's home page by googling Supertech and San Jose.

5. The also make a nice set of oem replacement valve springs, and upgrades for valve retainers and valves. For those who have a programable EMS, they make oversized valves too.

07-28-2009, 08:24 PM	#1 (permalink)
Jackstand Queen Cage Fighter Join Date: May 2008 Posts: 840 Thanks: 75 Thanked 64 Times in 60 Posts iTrader Rating: (1/100% )	Supertech valve guides To those who might be considering a rebuild of your cylinder head. I recommend Supertech brand valve guides. They are made of bronze, they look good, and have a more aerodynamic end just underneath the valve seat. 1. 4age valve stems are 1/100th inch too large to fit inside the guides. Clearance is critical, so you can't just casually drill it out to fit. 2. Do a google for a 15/16th's inch Chuck Reamer. Buy one, this will ream out the valve guide to a perfect valve stem to guide oil clearance. 3. The mounting point for valve seals will not accept a standard 4age valve seal. Supertech manufactures valve seals to fit their guides. The part number is VS-T6SM, order 16 of them. 4. You can find Supertech's home page by googling Supertech and San Jose. 5. The also make a nice set of oem replacement valve springs, and upgrades for valve retainers and valves. For those who have a programable EMS, they make oversized valves too. Last edited by Jackstand Queen; 07-29-2009 at 01:49 PM..