Exhaust Manifold Gasket??
01-06-2010, 01:28 AM
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Exhaust Manifold Gasket??
Hey again..Well, when I took the manifold off the engine, I tore up the gasket..Do I need to find a new gasket, or can I just use the Ultra CopperRTV silicone, and make one myself?Thanks againfor any info!!
01-06-2010, 01:29 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: Mickstix
Hey again..Well, when I took the manifold off the engine, I tore up the gasket..Do I need to find a new gasket, or can I just use the Ultra CopperRTV silicone, and make one myself?Thanks againfor any info!!
Hey again..Well, when I took the manifold off the engine, I tore up the gasket..Do I need to find a new gasket, or can I just use the Ultra CopperRTV silicone, and make one myself?Thanks againfor any info!!
01-07-2010, 12:50 AM
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RE: Exhaust Manifold Gasket??
Yea Im gonna ride down to the LHS tomorrow and see if they have one that'll fit.. If not, Im prolly going to try and make one, by smearing a thinlayer of that Ultra Copper RTV on some tin foil, let it set up, then cutout a gasket with a hobby knife.. EIther that, or put a nice bead around the manifold and bolt it up and let it set for a few hours, then take it apart and clean up any that seeped into the exhaust chamber, then put it back together and let it cure the rest of the way? Sompin like dat anyway... I like the business card idea as well!! Maybe do that and smear a little rtv on it so it wont burn up?One way or another I'll get it done though!LOL. 
01-07-2010, 04:19 AM
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RE: Exhaust Manifold Gasket??
It won't burn up as long as the mating surfaces are flat.I've been cutting my own gaskets for years.
You can cut the bolt holes with a suitably sized piece of sharpened brass tube,perhaps from a broken aerial.
.
You can cut the bolt holes with a suitably sized piece of sharpened brass tube,perhaps from a broken aerial.
.
01-07-2010, 10:37 AM
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RE: Exhaust Manifold Gasket??
ORIGINAL: Mickstix
Yea Im gonna ride down to the LHS tomorrow and see if they have one that'll fit.. If not, Im prolly going to try and make one, by smearing a thinlayer of that Ultra Copper RTV on some tin foil, let it set up, then cutout a gasket with a hobby knife.. EIther that, or put a nice bead around the manifold and bolt it up and let it set for a few hours, then take it apart and clean up any that seeped into the exhaust chamber, then put it back together and let it cure the rest of the way? Sompin like dat anyway... I like the business card idea as well!! Maybe do that and smear a little rtv on it so it wont burn up?One way or another I'll get it done though!LOL.
Yea Im gonna ride down to the LHS tomorrow and see if they have one that'll fit.. If not, Im prolly going to try and make one, by smearing a thinlayer of that Ultra Copper RTV on some tin foil, let it set up, then cutout a gasket with a hobby knife.. EIther that, or put a nice bead around the manifold and bolt it up and let it set for a few hours, then take it apart and clean up any that seeped into the exhaust chamber, then put it back together and let it cure the rest of the way? Sompin like dat anyway... I like the business card idea as well!! Maybe do that and smear a little rtv on it so it wont burn up?One way or another I'll get it done though!LOL.
01-07-2010, 07:40 PM
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RE: Exhaust Manifold Gasket??
Thanks for the ideas and help! Actually had them at the LHS.. Pack of 3 for $2.00 Now I get to waiste one finding out my piston/sleeve is in fact toast..
01-09-2010, 09:25 PM
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RE: Exhaust Manifold Gasket??
RTV is Not Fuel Proof and Will not replace an 1/8 header seal....1/10 side exhaust i have no experience with so wont comment on.
01-11-2010, 09:38 AM
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RE: Exhaust Manifold Gasket??
ORIGINAL: Mickstix
Hey again..Well, when I took the manifold off the engine, I tore up the gasket..Do I need to find a new gasket, or can I just use the Ultra CopperRTV silicone, and make one myself?Thanks againfor any info!!
Hey again..Well, when I took the manifold off the engine, I tore up the gasket..Do I need to find a new gasket, or can I just use the Ultra CopperRTV silicone, and make one myself?Thanks againfor any info!!
01-11-2010, 10:17 AM
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RE: Exhaust Manifold Gasket??
Although the OP has resolved the problem by finding new gaskets at his LHS, I just wanted to add that I make a lot of my own gaskets from gasket paper. The paper can be purchased at auto-parts stores and is available in a number of different thickness.
I do have a number of different size hollow punches for making holes, but for the smaller holes, one of those leather-punches with the rotating head, works very well.
I do have a number of different size hollow punches for making holes, but for the smaller holes, one of those leather-punches with the rotating head, works very well.
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01-12-2010, 06:35 PM
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RE: Exhaust Manifold Gasket??
I also make a lot of my gaskets, and not just for R/C.
And I make a lot of shims(small washers) too, from brass, aluminium and plastic sheet.
I have eliminated all the slop in the steering of my onroad, by shiming up the bearings using thin plastic
shims that I made from bottles, packets, back of folders etc, that happened to be the right thickness.
And I make a lot of shims(small washers) too, from brass, aluminium and plastic sheet.
I have eliminated all the slop in the steering of my onroad, by shiming up the bearings using thin plastic
shims that I made from bottles, packets, back of folders etc, that happened to be the right thickness.
01-16-2010, 07:23 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: INTEGRA
RTV is Not Fuel Proof
RTV is Not Fuel Proof
As for the topic, you should just replace the exhaust gasket with the manufacturers recommended gasket, they're cheap enough anyway. If you made you own, I don't know how it would hold up to the heat, that hasn't been tested.
01-16-2010, 07:58 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: dittch
This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment.
ORIGINAL: INTEGRA
RTV is Not Fuel Proof
RTV is Not Fuel Proof
Scientifically proven LOL .....TOO funny.
01-16-2010, 08:00 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: INTEGRA
Scientifically proven LOL .....TOO funny.
Scientifically proven LOL .....TOO funny.
01-16-2010, 08:29 PM
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RE: Exhaust Manifold Gasket??
yawn.... http://www.youtube.com/watch?v=At_RYHM7i9A
I still have these samples going, it has been about 6 months now, they still look intact. You would think the plug of RTV would smear when rubbed against paper after being exposed to not only nitro fuel but the pure ingredients of nitro (nitromethane and methanol) after 6 months if it's not soluble in them. Shall I post a video testing them now after exposure for 6 months?, or am I still arguing with a brick wall?
Maybe it's because the piece of RTV is too big, because as you know, table salt will dissolve in water but if it's a big chunk of rock salt it won't dissolve in water
....LOL
I still have these samples going, it has been about 6 months now, they still look intact. You would think the plug of RTV would smear when rubbed against paper after being exposed to not only nitro fuel but the pure ingredients of nitro (nitromethane and methanol) after 6 months if it's not soluble in them. Shall I post a video testing them now after exposure for 6 months?, or am I still arguing with a brick wall?
Maybe it's because the piece of RTV is too big, because as you know, table salt will dissolve in water but if it's a big chunk of rock salt it won't dissolve in water
....LOL
01-16-2010, 08:54 PM
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RE: Exhaust Manifold Gasket??
Looks like we're lost for words. That's expected, because talk is cheap, visual proof is another story. Maybe one of your chronies will chime in with pictures of their nerd buddies and some port work? We all know that proves that I'm full of it......You know, the bassackwards logic that unless I own a Ferrari I don't know how to do an oil change.....LOL
01-18-2010, 08:11 AM
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RE: Exhaust Manifold Gasket??
ORIGINAL: dittch
This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment. I proved this, and although the naysayers put words in my mouth in an attempt to discredit me, the data was there, and it didn't lie.
This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment. I proved this, and although the naysayers put words in my mouth in an attempt to discredit me, the data was there, and it didn't lie.
I bought my last batch of methanol in a 55 gallon drum. I wouldn't want that much nitromethane, maybe only 10 gallons of that at a time.
01-18-2010, 07:39 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: theRCreverend.
Where do you get your nitromethane from? I mix my own fuel and haven't used nitromethane in it for a long time now, but I'm always keeping my eye open for distributors that are decently priced.
I bought my last batch of methanol in a 55 gallon drum. I wouldn't want that much nitromethane, maybe only 10 gallons of that at a time.
ORIGINAL: dittch
This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment. I proved this, and although the naysayers put words in my mouth in an attempt to discredit me, the data was there, and it didn't lie.
This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment. I proved this, and although the naysayers put words in my mouth in an attempt to discredit me, the data was there, and it didn't lie.
I bought my last batch of methanol in a 55 gallon drum. I wouldn't want that much nitromethane, maybe only 10 gallons of that at a time.
You said you mix your own fuel. Have you bought it in bulk before? If so, how much did it cost you?
01-18-2010, 08:22 PM
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RE: Exhaust Manifold Gasket??
ORIGINAL: INTEGRA
Scientifically proven LOL .....TOO funny.
Scientifically proven LOL .....TOO funny.
I invite you to do you're own test and prove that it actually does break down in nitro. Words are cheap, regardless of who they come from. Tangeable evidence, a videotaped test in this case, trumps them.
02-13-2010, 06:45 PM
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RE: Exhaust Manifold Gasket??
I have seen RTV last longer than the metal it was put on. It really all depends on if it is allowed to cure completly or not. Read the tube and cure time is alot different than set time.
12-28-2021, 07:52 PM
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This has actually been scientifically proven to be a myth. RTV is nitro proof, and it is stable when exposed to not only nitro fuel but the pure components of nitro fuel (methanol and nitromethane). RTV is absolutely insoluble in that environment. I proved this, and although the naysayers put words in my mouth in an attempt to discredit me, the data was there, and it didn't lie.
As for the topic, you should just replace the exhaust gasket with the manufacturers recommended gasket, they're cheap enough anyway. If you made you own, I don't know how it would hold up to the heat, that hasn't been tested.
As for the topic, you should just replace the exhaust gasket with the manufacturers recommended gasket, they're cheap enough anyway. If you made you own, I don't know how it would hold up to the heat, that hasn't been tested.
