Intake gasket sealant

Ed McLawhorn Jr. · 08-27-2017, 07:34 PM

Currently having to run 2-intake gaskets together per side for intake to fit correctly. Pulled intake for cam change and found evidence of rust on intake rails near water jackets. No evidence of rust near intake runners or in the oil. Appears to be leaking to the exterior. I was out of silicone at time of build, so I used semi soft permatex. Not only did it leak, but was a pain in the butt to clean intake rails. Need suggestions. Thanks

Ed

Mark70Nova · 08-27-2017, 09:12 PM

Ed,

I'm not sure what engine you're working on but, Fel-Pro makes extra thick intake gaskets so you might not need to glue 2 of them together. As for sealant I use Permatex "Right Stuff" and have had great luck with it.

Good luck!

Mark

SSDiv6 · 08-27-2017, 11:43 PM

My preferred sealant for intakes is Permatex Water Pump & Thermostat RTV Silicone Gasket Maker.

Tom Meyer · 08-27-2017, 11:56 PM

ED I will get the number of the felpro thick gasket that I used. I always glued it to the intake and reused it for teardown with no sealant on the head side, with a thin coat of grease for no stick seal. Tom

Ed McLawhorn Jr. · 08-28-2017, 07:54 AM

Quote:

Originally Posted by Tom Meyer

ED I will get the number of the felpro thick gasket that I used. I always glued it to the intake and reused it for teardown with no sealant on the head side, with a thin coat of grease for no stick seal. Tom

Thanks Tom. I sent you a text last week... not sure it went thru. Phone has been acting up.

FED 387 · 08-28-2017, 01:11 PM

Take a look at Fel pro 1266 gasket it's .120 thick otherwise make an aluminum spacer plate and o-ring it

Mike Pearson · 08-28-2017, 01:53 PM

Spray the two sides of the two gaskets with High Tack that you want to glue together and set the intake on the engine for a couple of hours while the two gaskets dry. then install in the same manner as usual. Check the ends of the intake where it mates up to the block to make sure you have some clearance there. If not the intake will not seal no matter what you do. The MR Gasket thick gaskets are just two gaskets glued together at the factory. I have done this many times with good success

Rich Biebel · 08-28-2017, 03:59 PM

Cometic intake gaskets are by far the best...and they make them in a lot of different thicknesses........

Call them and talk to a Tech person. They have templates for most heads.

I have Oval Port Brodix heads and their gaskets fit perfect and don't leak or deteriorate.....

I use an .090" thick gasket and they make them for me direct...no middle man...

I don't have their phone number handy....but their easy to find....Google

Tom Meyer · 08-28-2017, 07:13 PM

1245 Felpro 1/8 thick trim to fit. Tom

Ed McLawhorn Jr. · 08-28-2017, 07:39 PM

ALL: thanks for the suggestions. Planning to install intake this weekend....too much going on during the "work week".

Ed
SS 2266

08-27-2017, 07:34 PM	#1
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 287 Likes: 3 Liked 16 Times in 14 Posts	Intake gasket sealant Currently having to run 2-intake gaskets together per side for intake to fit correctly. Pulled intake for cam change and found evidence of rust on intake rails near water jackets. No evidence of rust near intake runners or in the oil. Appears to be leaking to the exterior. I was out of silicone at time of build, so I used semi soft permatex. Not only did it leak, but was a pain in the butt to clean intake rails. Need suggestions. Thanks Ed

08-27-2017, 09:12 PM	#2
Mark70Nova Junior Member Join Date: Aug 2009 Location: So Cal Posts: 33 Likes: 83 Liked 0 Times in 0 Posts	Re: Intake gasket sealant Ed, I'm not sure what engine you're working on but, Fel-Pro makes extra thick intake gaskets so you might not need to glue 2 of them together. As for sealant I use Permatex "Right Stuff" and have had great luck with it. Good luck! Mark

08-27-2017, 11:43 PM	#3
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,991 Likes: 693 Liked 1,457 Times in 543 Posts	Re: Intake gasket sealant My preferred sealant for intakes is Permatex Water Pump & Thermostat RTV Silicone Gasket Maker.

08-27-2017, 11:56 PM	#4
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 900 Likes: 51 Liked 301 Times in 105 Posts	Re: Intake gasket sealant ED I will get the number of the felpro thick gasket that I used. I always glued it to the intake and reused it for teardown with no sealant on the head side, with a thin coat of grease for no stick seal. Tom __________________ Tom Meyer 5240 SS Stock ???

08-28-2017, 01:11 PM	#6
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 328 Liked 280 Times in 150 Posts	Re: Intake gasket sealant Take a look at Fel pro 1266 gasket it's .120 thick otherwise make an aluminum spacer plate and o-ring it

08-28-2017, 01:53 PM	#7
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,321 Likes: 546 Liked 1,629 Times in 502 Posts	Re: Intake gasket sealant Spray the two sides of the two gaskets with High Tack that you want to glue together and set the intake on the engine for a couple of hours while the two gaskets dry. then install in the same manner as usual. Check the ends of the intake where it mates up to the block to make sure you have some clearance there. If not the intake will not seal no matter what you do. The MR Gasket thick gaskets are just two gaskets glued together at the factory. I have done this many times with good success __________________ Mike Pearson 2485 SS

08-28-2017, 03:59 PM	#8
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: Intake gasket sealant Cometic intake gaskets are by far the best...and they make them in a lot of different thicknesses........ Call them and talk to a Tech person. They have templates for most heads. I have Oval Port Brodix heads and their gaskets fit perfect and don't leak or deteriorate..... I use an .090" thick gasket and they make them for me direct...no middle man... I don't have their phone number handy....but their easy to find....Google __________________ Rich Biebel S/C 1479

08-28-2017, 07:13 PM	#9
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 900 Likes: 51 Liked 301 Times in 105 Posts	Re: Intake gasket sealant 1245 Felpro 1/8 thick trim to fit. Tom __________________ Tom Meyer 5240 SS Stock ???

08-28-2017, 07:39 PM	#10
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 287 Likes: 3 Liked 16 Times in 14 Posts	Re: Intake gasket sealant ALL: thanks for the suggestions. Planning to install intake this weekend....too much going on during the "work week". Ed SS 2266