ARH merged collectors
Thread Starter
Race Director
Joined: Apr 2003
Posts: 17,700
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From: moraga ca
ARH merged collectors
I was under the car changing the tranny fluid today and snapped a picture of the ARH headers with the merge spike in the middle where the primaries come together. I believe ARH is the only manufacturer that does this for the c4 Vettes, and as I mentioned in the past, these headers were good for .10-.15 seconds over Hooker Super Comps.
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
I installed a set of these on my 1985 track car. I have not had a chance to go the track yet but that is coming when the weather dries out sometime. The fit required a few modifications from the prior set of headers. The main thing was relocating the oil filter because with the oil cooler diverter it put the filter to low that the headers hit it. That has been taken care of now. I replaced the older headers (12 years of track use) due to cracking of welds, tubes, and flaking of the coating. Hopefully the SS headers last at least as long. Here are a few pictures.
Brian
Brian
Thread Starter
Race Director
Joined: Apr 2003
Posts: 17,700
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From: moraga ca
I installed a set of these on my 1985 track car. I have not had a chance to go the track yet but that is coming when the weather dries out sometime. The fit required a few modifications from the prior set of headers. The main thing was relocating the oil filter because with the oil cooler diverter it put the filter to low that the headers hit it. That has been taken care of now. I replaced the older headers (12 years of track use) due to cracking of welds, tubes, and flaking of the coating. Hopefully the SS headers last at least as long. Here are a few pictures.
Brian
]
Brian
]
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
I installed a set of these on my 1985 track car. I have not had a chance to go the track yet but that is coming when the weather dries out sometime. The fit required a few modifications from the prior set of headers. The main thing was relocating the oil filter because with the oil cooler diverter it put the filter to low that the headers hit it. That has been taken care of now. I replaced the older headers (12 years of track use) due to cracking of welds, tubes, and flaking of the coating. Hopefully the SS headers last at least as long. Here are a few pictures.
Brian
Brian
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
Mine are the same size primaries as 383vett.
My pan is a Canton RR pan.
Yes things can be tight with mods to the car. Sometimes while I am working my way through the challenges of a mod I wonder why I put myself through this
Well the car is fun to drive on the track is all I can come up with.
My pan is a Canton RR pan.
Yes things can be tight with mods to the car. Sometimes while I am working my way through the challenges of a mod I wonder why I put myself through this
Well the car is fun to drive on the track is all I can come up with.
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Suckin' gas, haulin' ass.
Joined: Apr 2010
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From: Newport News Virginia
Do the headers come with the slip on adapters or do you have to buy them separate? I've got ball and socket type connectors on my Headman Elite's. I'd really like to get 1 7/8" headers eventually.
Le Mans Master
Joined: Dec 2002
Posts: 5,270
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From: Seattle Area WA
Mine are the same size primaries as 383vett.
My pan is a Canton RR pan.
Yes things can be tight with mods to the car. Sometimes while I am working my way through the challenges of a mod I wonder why I put myself through this Well the car is fun to drive on the track is all I can come up with.
My pan is a Canton RR pan.
Yes things can be tight with mods to the car. Sometimes while I am working my way through the challenges of a mod I wonder why I put myself through this
Well the car is fun to drive on the track is all I can come up with.)You should see my old LPE 1 3/4" longtubes with the canton RR. It basically touches on the driver's side. When these rust out I can consider the ARHs now. Thanks for posting the pics.
Pro
Joined: Jan 2003
Posts: 664
Likes: 119
From: Albany OR
The headers have slip fit collectors. So you either buy an ARH Y-pipe or modify a previous one or have a muffler shop build you one. I had a muffler shop modify the Y-pipe from my previous headers.
Race Director
Joined: Sep 2001
Posts: 14,682
Likes: 753
From: NEwhere Ohio
Do you notice an increase in underhood temps going from coated headers to stainless steel (non coated).
Id like to get the stainless headers ceramic coated. I don't follow the (bs flag) about it being bad to coat stainless steel bc it keeps the heat in the metal.
We are talking about a few hundred degrees here, not thousands.
I also heard a tuner say that cars w/ uncoated headers can run more timing before detonation on the dyno.
Don't you think the headers would heat soak and then it won't matter whether coated or uncoated?
Id like to get the stainless headers ceramic coated. I don't follow the (bs flag) about it being bad to coat stainless steel bc it keeps the heat in the metal.
We are talking about a few hundred degrees here, not thousands.
I also heard a tuner say that cars w/ uncoated headers can run more timing before detonation on the dyno.
Don't you think the headers would heat soak and then it won't matter whether coated or uncoated?
Le Mans Master
Joined: Jul 1999
Posts: 8,683
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From: Phoenix AZ
Do you notice an increase in underhood temps going from coated headers to stainless steel (non coated).
Id like to get the stainless headers ceramic coated. I don't follow the (bs flag) about it being bad to coat stainless steel bc it keeps the heat in the metal.
We are talking about a few hundred degrees here, not thousands.
I also heard a tuner say that cars w/ uncoated headers can run more timing before detonation on the dyno.
Don't you think the headers would heat soak and then it won't matter whether coated or uncoated?
Id like to get the stainless headers ceramic coated. I don't follow the (bs flag) about it being bad to coat stainless steel bc it keeps the heat in the metal.
We are talking about a few hundred degrees here, not thousands.
I also heard a tuner say that cars w/ uncoated headers can run more timing before detonation on the dyno.
Don't you think the headers would heat soak and then it won't matter whether coated or uncoated?
I recently had the #7 tube of my TPIS longtube headers modified, the required cutting the original tube out and having a new (uncoated) tube welded in.
Well, the headers were ceramic coated, but I didn't have the time to get them re-done, and I really didn't want to considering it was just one tube that had been modified. So instead, I just bought some of the high-heat spray paint that you find at Autozone.
After getting everything installed and tuned up again I wanted to check the temperatures of the primaries to see what the difference was. Guess what? There was ZERO difference in temperature from the #7 primary versus the #1, #2, and #8. I don't like comparing temps of 3, 5, 4, 6 because they are siamesed together and usually read higher that the outer four because of it...but those temps were consistent side to side.
There are ceramic coating that do reduce heat, but they are much more expensive than your standard Jet-Hot or HPC.
In my opinion the Jet-Hot/HPC style ceramic coating is really only good for corrosion resistance if you live in a humid area, or where they use salt on the roads. Beyond that, just get the paint it'll do you just as good...
Thread Starter
Race Director
Joined: Apr 2003
Posts: 17,700
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From: moraga ca
