Author Topic: 3 Angle valve job  (Read 2009 times)

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Offline FLOGTARA

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3 Angle valve job
« on: Jan 2, 2005, 09:37PM »
Tas i think you've explained this to me in the past but what does it do??

What is done to the valve/stem seal???

Cheers
1990 Z32 2 Seater N/A 5spd
Mods, modified cats, cat back exhaust, HKS air filter, cyn-r-g lightened flywheel, aluminium underdrive pulley, Super HD clutch.

Offline SSS

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Re: 3 Angle valve job
« Reply #1 on: Jan 3, 2005, 08:49AM »
Three angled cuts at 30, 45 and 60 degrees are made on the back of the valve and on the valve seat in the head, it promotes laminar flow (smooth flow) from the port, past the valve and into the combustion chamber.

Nothing is actually done to the valve stem seal nath.

Offline Pringles

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Re: 3 Angle valve job
« Reply #2 on: Jan 3, 2005, 09:11AM »
is it a defentant improvement, and what would the soutra cost of this be?
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Offline SSS

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Re: 3 Angle valve job
« Reply #3 on: Jan 3, 2005, 09:31AM »
Couldn't really say pringles, cos i did valve job, cam, porting and raised CR all in the one hit. I think the stock valve job is a 3 angle. When i had mine done i think it was approx $5-7 per valve/valve seat.

You can get a 5 angle cut done, from memory that was about $10-12 per valve.
You would have to contact a head workshop for more accurate pricing.

Offline Jtas

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Re: 3 Angle valve job
« Reply #4 on: Jan 3, 2005, 10:33AM »
Tas i think you've explained this to me

Tas, meaning me?   I don't remember explaining it to you... SSS has explained it pretty well :)

Offline SSS

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Re: 3 Angle valve job
« Reply #5 on: Jan 3, 2005, 01:30PM »
I try my best. ;D

Offline FLOGTARA

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Re: 3 Angle valve job
« Reply #6 on: Jan 3, 2005, 04:10PM »
Well cheers to the both of you.  ::)

Oh ok, well it sounds cheap and effective i guess.

Thanks blokes!
1990 Z32 2 Seater N/A 5spd
Mods, modified cats, cat back exhaust, HKS air filter, cyn-r-g lightened flywheel, aluminium underdrive pulley, Super HD clutch.