panhead vave seats

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stump
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panhead vave seats

#1

Post by stump »

what's the best course of action for heads that have had the seats cut out and new hardened seats pressed in ?
Robert Luland
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Re: panhead vave seats

#2

Post by Robert Luland »

Whats the point of your question? Your stuck with them. Bob L
stump
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Re: panhead vave seats

#3

Post by stump »

i was wondering if there's a way to keep em from coming out ?i've heard that they pretty much always come out eventually thout some body might have a solution
jdpan
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Re: panhead vave seats

#4

Post by jdpan »

Try contacting this place for more info on valve seats and general headwork ...

http://www.headhog.com/" onclick="window.open(this.href);return false;
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Re: panhead vave seats

#5

Post by Cotten »

stump wrote:what's the best course of action for heads that have had the seats cut out and new hardened seats pressed in ?
Stump!

If they were properly installed without damage to the head, (and you are running a reasonable compression ratio),
then you need only to avoid any heat spikes: manifold leaks, over-advanced timing, low octane fuels, lugging under excessive load, etc.

Good Luck!

....Cotten
stump
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Re: panhead vave seats

#6

Post by stump »

thanks guy's i appreciate the advice i'm so glad i found this site!!
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Re: panhead vave seats

#7

Post by Bosheff »

Had mine replaced 25-30 years ago. No problems yet....bosheff
stump
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Re: panhead vave seats

#8

Post by stump »

i hope this guy has the same luck bosheff i'd just hate to see the parts wrecked. it's his first build and i'd like to head off a catastrophe if i can. this bike is real close to original. the bottom line is i'm worried about this bike and thats why i consulted the people of this forum
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Re: panhead vave seats

#9

Post by Bosheff »

Luck has little to do it. Experience and knowledge is where it's at. Deal with reputable craftsmen. This is not an area where cost should be the primary consideration....bosheff
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Re: panhead vave seats

#10

Post by Cotten »

Stump and All!

Even if you were so lucky as to have found a knowledgeable craftsman to install hardened seats properly (a loaded word), the spectre of heat spikes shall still hang over the heads forever.

They will never be as forgiving as the original heads that earned their legendary reputation for longevity, inspite of abuse.
(Nor even those with MOCO bronze insert replacements!)

So you must remain vigilant against any possible cause of excessive heat, even long after the machine has been 'broken in'.

Something as simple as points cam-follower wear can be disastrous.

....Cotten
stump
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Re: panhead vave seats

#11

Post by stump »

this guy has done this on his own .i will definetly pass on all information thank you !
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