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90 350 intake gaskets and sealant #5288950 12/08/19 10:01 PM
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P10crew Online Content OP
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I’m going to finally tear into my 90 raydo to replace intake gasket set. Has had a very slow coolant leaking onto the top of the intake.
Questions
Is Felpro intake set my best choice?
What type sealer should I use ?

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288963 12/08/19 10:19 PM
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clinebarger Offline
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The Fel-Pro set is really good. I like Hylomar M or Blue for around the coolant ports & Permatex Ultra Grey for the front & back sealing on the intake.

Be prepared for the old gaskets to be hard as a rock & stuck really good to the heads if original!!!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288967 12/08/19 10:24 PM
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P10crew Online Content OP
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Ok thanks!

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288972 12/08/19 10:38 PM
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P10crew Online Content OP
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Looking like I may have trouble finding it locally. Quick search shows maybe our Harley shop has it.

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288974 12/08/19 10:41 PM
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Chris142 Offline
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Raydo?


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288975 12/08/19 10:48 PM
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clinebarger Offline
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Permatex Aviation Form-A-Gasket also works well.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288980 12/08/19 10:58 PM
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P10crew Online Content OP
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Chris Silverado

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288981 12/08/19 11:00 PM
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P10crew Online Content OP
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Forma gasket is what I normally use but I am ordering a tube of m from Walmart tonight.

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5288990 12/08/19 11:25 PM
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P10crew Online Content OP
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Ooo not paying $32 on Walmart. Any one know of a chain that may have it ?

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289120 12/09/19 07:13 AM
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Trav Offline
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Originally Posted by P10crew
Looking like I may have trouble finding it locally. Quick search shows maybe our Harley shop has it.


Hylomar M 1.35oz

Hylomar M 2.7oz


ASE L1, Master. Deutsch Meisterbrief.
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289128 12/09/19 07:24 AM
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nwjones18 Offline
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I used the Felpro set with the metal core when I did my 4.3. They seemed to have the best reviews at the time and I haven't had any problems since.


2016 Ram 1500 5.7 Hemi 30k QSUD 5w-20 and Mopar filter
1988 F-150. 4.9 I6 251k. 10w-40 QSHM Motorcraft FL1A
2007 Mazda 3 2.3 130k 5w-30 syn-blend and Denso filter
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289275 12/09/19 10:26 AM
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P10crew Online Content OP
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Thanks for the info fellas.
Sheesh hylomar is tough to find. 6 parts houses, 2 bike shops and granger. Gave up and ordered from amazon. It ships by seller so that is always slow.
Got enough to last a while though.

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289826 12/09/19 08:21 PM
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clinebarger Offline
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I get it from a industrial supply house in Dallas, Far to many use RTV for everything so demand isn't real high for premium non-setting joint compounds.

If I ever find the person that came up with putting RTV on O-rings......I'll kill 'em!!!!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289842 12/09/19 08:45 PM
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P10crew Online Content OP
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Yeah I hear you on the orings.
I noticed that you don’t really recommend hylomar for oil. I have been using right stuff for areas with oil . Have you had bad luck with hylomar and oil?

Re: 90 350 intake gaskets and sealant [Re: P10crew] #5289862 12/09/19 09:02 PM
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cronk Offline
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I use felpro gaskets and permatex "The Right Stuff" on the front and back if the valley.
It comes in a pressurized can like the cheese spread. Goes on easy and havent had any leaks in the 6 or 7 GM intakes I have done over the past several years.


2008 Ford F350
2008 Kia Spectra
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
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