header wrap a good idea when installing headers??
06-03-04, 05:40 PM
#1
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header wrap a good idea when installing headers??
Will this help on the rotory or will it hurt. I remember reading a post about how rotory engines don't scavange the exhaust gasses so wrapping the header would only reduce under hood temps. anyone care to expand on this.
06-03-04, 07:54 PM
#6
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Originally posted by downwinddave
What about stock exaust system...
What about stock exaust system...
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06-04-04, 12:19 AM
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High engine bay temp can kill performance, you can wrap the exhaust, but as far as any gains, no. You may have to check your cats for meltdown due to higher exhaust tems. I have only had it happen to my old Capri, but it does happen.
06-04-04, 12:52 AM
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Alright here's what I've experienced. The wrap will keep underhood temps down. And the heat withing the exhaust gas. Higher exhaust temps, means the gas carries more energy. More energy, more velocity=better performance.
The down side is that when it rains, and or when the wrap becomes wet, it retains moisture. Thus expediting the whole rust thing.
You could double wrap it, or the smarter way would be to paint the wrap, which acts as a sealer. I've sealed the wrap on my down pipe and when i removed to Ceramic coat it, it was in really good shape. Very LITTLE surface rust. It was mild steel anyhow, some was expected.
The down side is that when it rains, and or when the wrap becomes wet, it retains moisture. Thus expediting the whole rust thing.
You could double wrap it, or the smarter way would be to paint the wrap, which acts as a sealer. I've sealed the wrap on my down pipe and when i removed to Ceramic coat it, it was in really good shape. Very LITTLE surface rust. It was mild steel anyhow, some was expected.
06-04-04, 08:27 AM
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Originally posted by fastrotaries
Alright here's what I've experienced. The wrap will keep underhood temps down. And the heat withing the exhaust gas. Higher exhaust temps, means the gas carries more energy. More energy, more velocity=better performance.
The down side is that when it rains, and or when the wrap becomes wet, it retains moisture. Thus expediting the whole rust thing.
You could double wrap it, or the smarter way would be to paint the wrap, which acts as a sealer. I've sealed the wrap on my down pipe and when i removed to Ceramic coat it, it was in really good shape. Very LITTLE surface rust. It was mild steel anyhow, some was expected.
Alright here's what I've experienced. The wrap will keep underhood temps down. And the heat withing the exhaust gas. Higher exhaust temps, means the gas carries more energy. More energy, more velocity=better performance.
The down side is that when it rains, and or when the wrap becomes wet, it retains moisture. Thus expediting the whole rust thing.
You could double wrap it, or the smarter way would be to paint the wrap, which acts as a sealer. I've sealed the wrap on my down pipe and when i removed to Ceramic coat it, it was in really good shape. Very LITTLE surface rust. It was mild steel anyhow, some was expected.
06-04-04, 08:54 AM
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A coating is a better idea than wrapping...there are many coatings like Jet Hot that keep heat within the pipe rather than letting it radiate out in the engine bay and it won't rust.
06-04-04, 10:38 AM
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For the MAXIMUM you'd have to do the whole exhaust. But if you only did the headers you would feel the benefits. I painted them with some sealer from the Summit Catalogue. I just bought the wrap and sealer at the same time. After i Ceramic coated it, i wrapped it up again. After a 1/4 mile run you could put your hand on the DP and NOT get burn......It was no longer a blazing furnace down there.
06-04-04, 12:10 PM
#18
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it is rust avoidant but over time and weather conditions it can still rust but would certinally last longer than non stainless headers. i think the wrap is a good idea, the engine bay was definitly hotter when i had my headers on.
06-04-04, 12:23 PM
#19
Jesus is the Messiah
I've wrapped my RB headers. RB headers (the ones I bought at least) are very thick, chrome plated mild steel.
Keeps engine bay temps down, and traps that energy inside the header.
I have slight corrosion on the header from the tape after about six months of it being on there.
Good stuff.
Keeps engine bay temps down, and traps that energy inside the header.
I have slight corrosion on the header from the tape after about six months of it being on there.
Good stuff.
06-04-04, 01:40 PM
#20
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>The down side is that when it rains, and or when the >wrap becomes wet, it retains moisture. Thus >expediting the whole rust thing.
That's what happened on the chevy engine I stuck in my vanagon... The header wrap got wet and the headers rusted out from the inside...
yay for 5' flames though
That's what happened on the chevy engine I stuck in my vanagon... The header wrap got wet and the headers rusted out from the inside...
yay for 5' flames though
06-04-04, 08:32 PM
#24
The Jet hot place is about a mile from where I am right now.
I even watch a video"Why Jethot?" lol.
It'll do it's job.
You don't usually coat the inside. Just the outside so I would not see any problem doing it.
Just take the hotside off and they will spray it.
When done make sure there are no over spreay marks or problems with the wastegate.
I even watch a video"Why Jethot?" lol.
It'll do it's job.
You don't usually coat the inside. Just the outside so I would not see any problem doing it.
Just take the hotside off and they will spray it.
When done make sure there are no over spreay marks or problems with the wastegate.
06-04-04, 08:58 PM
#25
Jesus is the Messiah
Uh, what are you talking about?
On the site it says they normally coat the inside and the outside :O
I suppose thats just for headers? I dont know, undoubtably you could ask them to only coat one side, I guess :O
On the site it says they normally coat the inside and the outside :O
I suppose thats just for headers? I dont know, undoubtably you could ask them to only coat one side, I guess :O
Last edited by Tofuball; 06-04-04 at 09:14 PM.
