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Valve job
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Topic: Valve job (Read 1596 times)
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wayne
Sr. Member
Posts: 370
Valve job
«
on:
August 01, 2020, 01:42:13 PM »
Do they still use torque plates on the heads when seats are ground.
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winr1
Guest
Re: Valve job
«
Reply #1 on:
August 01, 2020, 10:55:42 PM »
I believe Barry posted about doing valve job then bolting on torque plate
IIRC, the end valves did not seal then
I dont know any shop that uses torque plates to do a valve job but I am going to ask my machinist if he wants to experiment now
Ricky.
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wayne
Sr. Member
Posts: 370
Re: Valve job
«
Reply #2 on:
August 02, 2020, 06:44:30 AM »
I was told back when Bob Glidden did work for people he would use plates on fe heads or the end valves would not seal.After he got in to pro stock he quit doing outside work.If this is true and four cyl leak a little it may be worth doing.
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My427stang
Hero Member
Posts: 3937
Re: Valve job
«
Reply #3 on:
August 02, 2020, 06:59:38 AM »
I can't see where it would be a bad idea, in fact, I think it's a good idea if the machine you use can work in the chamber that way but I also think once you you add heat and motion to what essentially is a tapered seal, my guess is they seat right in
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch
frnkeore
Hero Member
Posts: 1138
Re: Valve job
«
Reply #4 on:
August 02, 2020, 01:01:42 PM »
I have to agree with Ross, here. If you put 500 lb on a big valve with a 11.32 stem or, smaller it shouldn't leak.
But, if the valve is fretting, more than others or failing, then it would be worth a try.
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Frank
Barry_R
Hero Member
Posts: 1918
Re: Valve job
«
Reply #5 on:
August 02, 2020, 06:01:49 PM »
Used to do it all the time on iron heads destined for serious work.
If you don't, the end exhausts would leak air and the car would definitely slow down.
Still do it once in a while.
Blair might be a better reference for current iron head race practices.
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wayne
Sr. Member
Posts: 370
Re: Valve job Barry R
«
Reply #6 on:
August 05, 2020, 12:43:09 PM »
Do you use a head gasket with the plate like the one you will use.Or is this over thinking this deal.
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Valve job