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sealing intake ports

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ncmc47

Posts: 18

Joined: Sun Mar 26, 2006 3:50 pm

Location: Valentine, NE 69201

Post Sat Jun 09, 2012 12:48 pm

sealing intake ports

What does S&S use on their knuckle and panhead motors? I'm thinking of using a steam fitting goop, from Deacon.
Thanks,
Steve
It's a hard life if you don"t weaken.
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FHP-Eric

Posts: 19

Joined: Mon Sep 27, 2010 12:59 pm

Post Mon Jun 11, 2012 7:26 am

Re: sealing intake ports

We use "the right stuff" by Permatex on our Knuckle intakes, and snug them as tight as an expander wrench will allow, our pans have the shovel intake and exhaust ports so there isn't a thread in insert. A note about the Permatex sealant: Since it's not a thread locking compound, it will let your inserts back out some when disassembling in some instances, however it holds up to the heat and seals very well. We did this so if a customer wanted to change out to the o-ring adapter, he/she wont damage the threads in doing so. It may not be ideal for thread locking, but it will work well in keeping the heads fully functional and re-build-able for years to come.
Eric
S&S Cycle, Vintage Lead (formerly Flathead Power)
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ncmc47

Posts: 18

Joined: Sun Mar 26, 2006 3:50 pm

Location: Valentine, NE 69201

Post Tue Jun 12, 2012 12:41 pm

Re: sealing intake ports

What blend of Permatex?
It's a hard life if you don"t weaken.
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woody

Posts: 500

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Wed Jun 13, 2012 10:58 am

Re: sealing intake ports

The product data sheet for Permatex "The Right Stuff" states "Not for use on parts with gasoline contact"
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FHP-Eric

Posts: 19

Joined: Mon Sep 27, 2010 12:59 pm

Post Wed Jun 13, 2012 1:31 pm

Re: sealing intake ports

There is little to no gasoline contact to the threaded area of the intake nipples, "The right stuff" withstood our 200 hr engine dyno testing, the test mule engine and is still sealing in KKN-001 (first production KN engine built in late 2007)
Eric
S&S Cycle, Vintage Lead (formerly Flathead Power)
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Cotten

User avatar

Posts: 2680

Joined: Thu Sep 30, 1999 12:01 am

Location: Central Illinois, USA

Post Wed Jun 13, 2012 6:35 pm

Re: sealing intake ports

FHP-Eric wrote:There is little to no gasoline contact to the threaded area of the intake nipples, "The right stuff" withstood our 200 hr engine dyno testing, the test mule engine and is still sealing in KKN-001 (first production KN engine built in late 2007)

I was hopeing you were only making a bad joke.

....Cotten

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