how to fix hole in port

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how to fix hole in port

Post  johndickjr on March 28th 2013, 6:33 pm

what is the best way to fix a small pin size hole in the exhaust port on a BBF dove head, it got ported a hair to much

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Re: how to fix hole in port

Post  richter69 on March 28th 2013, 7:37 pm

where is said pinhole?
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Re: how to fix hole in port

Post  c.evans on March 28th 2013, 8:41 pm

If it goes into water, then the best way is to spray weld it. Send it off if need be.

If it just goes into the head bolt hole, then don't worry about it. Ain't no problem.

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Re: how to fix hole in port

Post  johndickjr on March 28th 2013, 8:42 pm

richter69 wrote:where is said pinhole?
with head on motor , it is to the right of valve guide, i hit a water port

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Re: how to fix hole in port

Post  Dave C. on March 28th 2013, 9:41 pm

Put it on alky...Never a problem bringin it up operating temp! silent

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Re: how to fix hole in port

Post  johndickjr on March 28th 2013, 11:02 pm

Dave C. wrote:Put it on alky...Never a problem bringin it up operating temp! silent
that what i told the owner..he did not think it was funny..lol

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Re: how to fix hole in port

Post  johndickjr on March 30th 2013, 10:26 pm

how about heating it up with a torch to 500f..weld it..then pour sand into that port so it will slowly cool..the hole is pin size

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Re: how to fix hole in port

Post  johndickjr on March 30th 2013, 10:37 pm

any luck with maybe a high temp putty..since the hole is so small, edit...found some stuff called thermo steel..says good to 2400f or something called seal lock

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Re: how to fix hole in port

Post  LivermoreDave on March 31st 2013, 8:02 am

c.evans wrote:If it goes into water, then the best way is to spray weld it. Send it off if need be.
If it just goes into the head bolt hole, then don't worry about it. Ain't no problem.
Uncle Charlie

IMO, anything less than welding, your customer will be knocking on your door!

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Re: how to fix hole in port

Post  bbf-falcon on April 1st 2013, 6:44 am

We have some stuff here at work that works amazingly for patching cast or steel. It's called Balzoni. It actually has steel shavings in the mix,and when it sets up you can drill/tap and torque it. very pricey but good stuff.

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Re: how to fix hole in port

Post  bbf-falcon on April 2nd 2013, 1:27 pm


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Re: how to fix hole in port

Post  DanH on April 2nd 2013, 10:16 pm

any high heat that must be put close to a valve guild. ream the guild out for a replacement .

then if there is ever an issue , repair can made.

preheat the head some , then braze the hole

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