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By HT32BSX115 - 11 Years Ago
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Howdy all,
I'm getting ready to make up my exhaust system using ceramic coated Rams Horns on my largely stock 292.
Does anyone think I need to use exhaust pipe larger than 2" (like maybe 2 1/4" ) from the manifolds to the mufflers and back?
Thanks,
Rick
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By stuey - 11 Years Ago
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Hi Rick
If you are using Mummerts ram horns check the outlet diam. I'm setting up a temporary exhaust for a test bed and assumed the outlet diam. to be 2" (I know measure 3...4....5 times
cut/ spend money once) so it came as a surprise to find 2" pipe falls right in. The outlet is nearer 2-1/8". So 2-1/4" would give a nice step of 1/16" in the right direction but check bolt clearance as the bolt fixing centres is 3". I had to make my own flanges as I could not find any 2 bolt on 3" centres.
good luck with the project
stuey
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By charliemccraney - 11 Years Ago
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2" will be more than adequate. Also, larger than 2" will not fit the flange if it is the same as original manifolds.
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By Ted - 11 Years Ago
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See if this link to a past thread helps. http://forums.y-blocksforever.com/FindPost56358.aspx
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By HT32BSX115 - 11 Years Ago
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Thanks Ted!
That's exactly what I was looking for!
I had to make my own flanges as I could not find any 2 bolt on 3" centres.
good luck with the project
stuey
Yeah. I too am going to make my own flanges. Sure wish John offered them for the manifolds.........
Still haven't decided if I'll use SS or mild steel. I have a 6"x8" 3/8" thick piece of SS plate. and I'm setting up a template to cut them with my plasma cutter.
Because I'm using side mounts welded to the frame, I have to make a rather tight turn coming out of the flange.
More to come!
Rick
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By stuey - 11 Years Ago
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if you are using Mummert ram horns 2" may be adequate but there will be a step in the wrong direction. please check.
I found these they may help http://spdexhaust.com/2BoltB.html
stuey
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By thundercat - 11 Years Ago
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I recently purchased a set of Johns manifolds and he sold me a set of flanges to go with them.. The I.D. is 2.135" for 2" I.D. exhaust tubing..
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By 62bigwindow - 11 Years Ago
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I bought a set from Speedway and they have the flanges with them.
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By HT32BSX115 - 11 Years Ago
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thundercat (9/3/2014)
I recently purchased a set of Johns manifolds and he sold me a set of flanges to go with them.. The I.D. is 2.135" for 2" I.D. exhaust tubing..
I looked on his site and didn't find them. Do you have a link for them?
Glad to see that he has them now!
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By thundercat - 11 Years Ago
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The flanges were not listed on his site. But I asked when I purchased manifolds on 8-4-2014 . They were on my receipt on a separate line with no part # .. the pair was 25.00 ..They are 3/8" thick and nicely made ..
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By HT32BSX115 - 11 Years Ago
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thundercat (9/4/2014)
The flanges were not listed on his site. But I asked when I purchased manifolds on 8-4-2014 . They were on my receipt on a separate line with no part # .. the pair was 25.00 ..They are 3/8" thick and nicely made ..
Hey thanks!
I am going to give him a call !!
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By HT32BSX115 - 11 Years Ago
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thundercat (9/4/2014)
The flanges were not listed on his site. But I asked when I purchased manifolds on 8-4-2014 . They were on my receipt on a separate line with no part # .. the pair was 25.00 ..They are 3/8" thick and nicely made ..
Well,
Well, I relented!!
I called John today and ordered 2 flanges!
Thanks!
Rick
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By HT32BSX115 - 11 Years Ago
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Hey guys,
Just got the flanges from John M! Just what Doctor ordered! about $14 each + shipping!
Now to get pipe and start welding!
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