Intake Manifold - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 12-05-2003, 02:36 AM

I am using the rtv instead of the rubber gaskets. Should there be a line of rtv on the bottom of the front and back?

DanoDMano · 12-05-2003, 02:43 AM

I would say definitely, but the rubber seals work great!! If you cant get the rubber ones then the RTV should work.

lukecp · 12-05-2003, 02:52 AM

Yup, just lay a 1/4" wide of RTV at the front and back of the block. I use Red RTV myself, but black also works pretty good

jorgensensc · 12-05-2003, 02:55 AM

I like the copper rtv myself, everyone has a favorite it seems!!!

*redbowtie* · 12-05-2003, 03:29 AM

No offence but....throw the rubber ones in the trash.

Use sealer.

shuttermutt · 12-05-2003, 09:48 AM

Quote:

Originally posted by redbowtie
No offence but....throw the rubber ones in the trash.

Use sealer.

Agreed!

*rickspickuppart* · 12-05-2003, 12:41 PM

Quote:

Originally posted by redbowtie
No offence but....throw the rubber ones in the trash.

Use sealer.

I Agree also

Shawn

skokie · 12-05-2003, 06:58 PM

I had the wrong gaskets to begin with. I had the blue ones the 1256s are black. OOOPPPSSSS. Well at least I didnt fire it up and I got a trial run of putting the manifold on. Live and Learn.

metalman · 12-05-2003, 07:02 PM

Quote:

Originally posted by rickspickuppart

I Agree also

Shawn

I agree as well.

Once the rubber ones pop out on you, and you have to do it all over, you never go back to using them.
I have never had a problem using sealer.
I better shut up . Now that i said that i will get leaks everwhere.

Tx Firefighter · 12-05-2003, 07:26 PM

Skokie, when I told you, via PM, to use silicone instead of the rubber gaskets, I knew what I was talking about.

I sat through a GM training class when I worked at the dealer that was 8 hours of tips on stopping oil leaks.

Seems like everyone else here agrees with me too huh?

Piss on whoever told you to not use Blue Fel-Pro gaskets. That's all I've used for 15 years now.

When I offered you advice via PM, I only tell you what I KNOW to work from years of experience. You won't ever see me say "I heard" this or "someone told me" that.

When I said GM policy is to not use the rubber gaskets, to use silicone instead, I wasn't just pulling it out of my rear.

cableguy0 · 12-05-2003, 07:32 PM

i agreed we build engines everyday and we throw away a lot of the little rubber ends. whoever told you not to use felpros do yourself a favor and dont listen to anything else they tell you because they are a moron. every race engine we put together gets fel pros as well as the street engines and we dont have leak problems

DanoDMano · 12-05-2003, 08:06 PM

My Felpro set included the blue gaskets and the rubber ones which I used. They dont leak, and they fit nice????

Are you talking about the rubber ones that come with the Felpro set, or something else??

Tx Firefighter · 12-05-2003, 08:17 PM

Yes, the Fel-Pro set comes with two sets of rubber end gaskets, the ones with the tits and the ones without.

GM did a study that determined the rubber would pooch out of place over time causing an oil leak. So, they decided to do away with the rubber end pieces and use big bead of silicone only. Warranty oil leak repairs drastically decreased after this change of policy.

Since then, saavy guys have taken the ball and run with it, throwing them away and using silicone on the Fel-Pro sets too.

If you buy a Fel-Pro intake gasket set for a later model SBC, like an early to mid 90s model, it will come with a small tube of black silicone in the box with the two side gaskets, and no end pieces. They even include a little instruction sheet in there to inform the old school guys how to apply the silicone properly.

There is nothing wrong with using the rubber end pieces, but down the road a ways, it is more likely to develop an oil leak from there.

DanoDMano · 12-05-2003, 08:23 PM

Thanks for the information. I will have to keep an eye on it for leakage. I have learned in the past that RTV is my friend!

12-05-2003, 02:36 AM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Intake Manifold I am using the rtv instead of the rubber gaskets. Should there be a line of rtv on the bottom of the front and back?

12-05-2003, 02:43 AM	#2
DanoDMano Pronounced "Pew-al-up" Join Date: Oct 2002 Location: Puyallup, Washington Posts: 845	I would say definitely, but the rubber seals work great!! If you cant get the rubber ones then the RTV should work. __________________ Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos

12-05-2003, 02:52 AM	#3
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Yup, just lay a 1/4" wide of RTV at the front and back of the block. I use Red RTV myself, but black also works pretty good __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

12-05-2003, 02:55 AM	#4
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	I like the copper rtv myself, everyone has a favorite it seems!!! __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

12-05-2003, 07:26 PM	#10
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Skokie, when I told you, via PM, to use silicone instead of the rubber gaskets, I knew what I was talking about. I sat through a GM training class when I worked at the dealer that was 8 hours of tips on stopping oil leaks. Seems like everyone else here agrees with me too huh? Piss on whoever told you to not use Blue Fel-Pro gaskets. That's all I've used for 15 years now. When I offered you advice via PM, I only tell you what I KNOW to work from years of experience. You won't ever see me say "I heard" this or "someone told me" that. When I said GM policy is to not use the rubber gaskets, to use silicone instead, I wasn't just pulling it out of my rear. __________________ I'm on the Instagram- @Gearhead_Kevin

12-05-2003, 03:29 AM	#5
redbowtie Account Suspended Join Date: Nov 2003 Location: Fort Worth, Texas Posts: 0	No offence but....throw the rubber ones in the trash. Use sealer.

12-05-2003, 06:58 PM	#8
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	I had the wrong gaskets to begin with. I had the blue ones the 1256s are black. OOOPPPSSSS. Well at least I didnt fire it up and I got a trial run of putting the manifold on. Live and Learn.

12-05-2003, 07:32 PM	#11
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	i agreed we build engines everyday and we throw away a lot of the little rubber ends. whoever told you not to use felpros do yourself a favor and dont listen to anything else they tell you because they are a moron. every race engine we put together gets fel pros as well as the street engines and we dont have leak problems __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

12-05-2003, 08:06 PM	#12
DanoDMano Pronounced "Pew-al-up" Join Date: Oct 2002 Location: Puyallup, Washington Posts: 845	My Felpro set included the blue gaskets and the rubber ones which I used. They dont leak, and they fit nice???? Are you talking about the rubber ones that come with the Felpro set, or something else?? __________________ Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos

12-05-2003, 08:17 PM	#13
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Yes, the Fel-Pro set comes with two sets of rubber end gaskets, the ones with the tits and the ones without. GM did a study that determined the rubber would pooch out of place over time causing an oil leak. So, they decided to do away with the rubber end pieces and use big bead of silicone only. Warranty oil leak repairs drastically decreased after this change of policy. Since then, saavy guys have taken the ball and run with it, throwing them away and using silicone on the Fel-Pro sets too. If you buy a Fel-Pro intake gasket set for a later model SBC, like an early to mid 90s model, it will come with a small tube of black silicone in the box with the two side gaskets, and no end pieces. They even include a little instruction sheet in there to inform the old school guys how to apply the silicone properly. There is nothing wrong with using the rubber end pieces, but down the road a ways, it is more likely to develop an oil leak from there. __________________ I'm on the Instagram- @Gearhead_Kevin

12-05-2003, 08:23 PM	#14
DanoDMano Pronounced "Pew-al-up" Join Date: Oct 2002 Location: Puyallup, Washington Posts: 845	Thanks for the information. I will have to keep an eye on it for leakage. I have learned in the past that RTV is my friend! __________________ Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos

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