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Old 01-29-2007, 08:21 PM   #1
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Default DSM stock J-pipe coupler

ok, here's a question:

Been planning on using the stock J-pipe (compressor outler pipe) that came stock on a DSM. But it's about a 1.75" OD, iirc. I'm planning on using 2" intercooler pipe. Any ideas where to find a reducer like that for < $mad bank$?

Thanks
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Old 01-29-2007, 08:24 PM   #2
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Old 01-29-2007, 09:28 PM   #3
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mine was 2 inches hmm, and i used a peice of radiator line i also had to cut the j pipe to fit.
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Old 01-29-2007, 09:31 PM   #4
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You want a 2" coupler.

Last edited by samnavy; 08-01-2007 at 10:35 PM.
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Old 01-29-2007, 09:36 PM   #5
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Hmmm, I'll go make a more accurate measurement.
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Old 01-29-2007, 09:36 PM   #6
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nah he says his is 1 3/4 OD i dunno
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Old 01-29-2007, 09:50 PM   #7
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I'm talking about this piece in the attached photo.

Just measured with some calipers. Does indeed appear to be 1 3/4"

I also measured my intercooler inlet/outlet again; they appear to be 2 1/16". That close enough to push on some 2" couplers?

Thanks guys. I'll probably take a look at siliconeintakes.com
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Old 01-29-2007, 10:30 PM   #8
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Quote:
Originally Posted by Atlanta93LE View Post
I also measured my intercooler inlet/outlet again; they appear to be 2 1/16". That close enough to push on some 2" couplers?
Heat them up.
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Old 01-30-2007, 12:07 AM   #9
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Quote:
Originally Posted by Atlanta93LE View Post
I'm talking about this piece in the attached photo.
I have got to be retarded. Where did you get such a sexy looking pipe?

Anyways, place your coupler in boiling water for 5 minutes and you can easily get another 1/2" worth of diameter out of it. I used some KY for good measure and don't forget a glove of some sort.

Check out this thread:
https://www.miataturbo.net/forums/showthread.php?t=5332
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Old 01-30-2007, 12:12 AM   #10
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1/2, eh? I've seen that thread before...very nice. Perfect to stretch some 2" over the 2 1/16" intercooler inlet/outlet.

Then I guess I'll just need a 1 3/4" to 2", and then a 2 1/4" to 3" for the compressor inlet.

Neat stuff. I'll wait to order until I get the intercooler mounted and routing worked out more specifically. Thanks guys
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Old 01-30-2007, 12:33 AM   #11
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I have that 1-3/4" dsm pipe to, I used a 1.5->2" coupler.
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Old 01-30-2007, 12:42 AM   #12
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Cool. Thanks.
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