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01-03-2020, 11:22 AM | #1 |
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Join Date: Mar 2014
Location: Canton, IL
Posts: 186
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Oversize Valves
I've read several post on the pros and cons of using oversize valves but haven't seen any mention of the oversize valves causing problems with the head gasket. Has anyone with the oversize valves had any issues with blown head gaskets?
Thanks |
01-03-2020, 12:15 PM | #2 |
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Join Date: Jun 2010
Location: Temecula, CA
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Re: Oversize Valves
I use 1.700" intakes, with no problems. Bigger than stock exhausts are not needed.
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01-03-2020, 12:17 PM | #3 |
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Join Date: Aug 2017
Location: SoCal Desert
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Re: Oversize Valves
Nope, how could valves effect a head gasket? If it was a thing, then over-sized pistons would also be a thing.
Regards Bill |
01-03-2020, 05:55 PM | #4 |
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Join Date: May 2010
Location: Santa Rosa, CA
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Re: Oversize Valves
Check to be sure the oversize valve clears the side of the combustion chamber.
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01-03-2020, 06:04 PM | #5 |
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Location: Van, Texas
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Re: Oversize Valves
ditto what Jim B says. I have used 1.700 intake valves in several engines.
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01-04-2020, 12:35 AM | #6 |
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Re: Oversize Valves
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01-04-2020, 07:58 AM | #7 |
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Re: Oversize Valves
PC/SR for the record I have used Stock Model A, Snyders 5.5 and 6.1, and Brumfeld 5.9
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01-04-2020, 12:00 PM | #8 |
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Location: Temecula, CA
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Re: Oversize Valves
I have used a Cyclone head, presently a BRIERLEY head, no problems with either.
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01-04-2020, 12:11 PM | #9 |
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Re: Oversize Valves
I had one of the first Lion Head III 6.5 to 1 (4 spark plugs)(first version of III) 1.7 intakes rubbed on head had to relieve area.
The later ones were changed to clear 1.7s. No problem with original Thomas 8.25 to 1 head Last edited by Benson; 01-04-2020 at 12:19 PM. |
01-04-2020, 12:36 PM | #10 |
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Location: Santa Rosa, CA
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Re: Oversize Valves
Thanks for the info on the heads and fitting the valves. Good to know.
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