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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

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Old Sep 23, 2011 | 12:52 PM
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t-bone117yamaha's Avatar
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From: tricities
Default down pipe
hey guys im looking for a 4 inch down pipe for my 91 auto i/c im not having much luck any ideas?
-Tanner
 
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Old Sep 23, 2011 | 03:03 PM
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I made mine out of two 4 inch 90*s
 
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Old Sep 23, 2011 | 03:53 PM
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how hard was that just the 2 90*s and a piece of straight 4" and how do you connect it to the hc1?
 
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Old Sep 23, 2011 | 05:34 PM
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I 2nd gen one will fit with minor "tweaking" of the firewall... And by "tweaking" I mean hitting it with a hammer....

If you are still running the H1C I would not waste my time or money on a 4" DP. The aftermarket bolt on 3-3.5" pipes are more then enough.
 
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Old Sep 23, 2011 | 11:40 PM
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Whats up Tbone! Aint been on here for a few. And i agree with not needing a 4 in if you got a stock turbo.
 
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Old Sep 24, 2011 | 10:16 PM
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I just welded it to the factory flange.

Name: P4210151.jpg Views: 1745 Size: 113.7 KB
 
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Old Sep 25, 2011 | 10:32 PM
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Check out Diamond Eye, they have turbo back 4in kits.
 
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Old Sep 26, 2011 | 10:58 PM
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1989-1993 Dodge Ram Cummins 4 Hx35/H1C Downpipe
 
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Old Sep 28, 2011 | 03:15 PM
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I have a 4 incher on my truck that will be for sale soon. How quick do you need it?Rocky
 
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Old Sep 28, 2011 | 10:09 PM
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source wants 200. for the down pipe you can get a whole system for not much more TV Diesel - Exhaust Systems and Components ken
 
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