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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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hey guys im looking for a 4 inch down pipe for my 91 auto i/c im not having much luck any ideas? -Tanner... JOIN NOW TO REMOVE TRACER

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  #1  
Old 09-23-2011, 12:52 PM
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hey guys im looking for a 4 inch down pipe for my 91 auto i/c im not having much luck any ideas?
-Tanner

t-bone117yamaha's Sig:91 cummins 5.9l,190,000, 5 inch stacks,370 sticks, h1c 16cm housing, bd fuel pin, guages:pyro, tranny temp, and air pressure, remote start, minor pump mods, train horn, on board air, cb with 100 watt linear, dual firesticks, renegade 1000 watt amp pushing two monster 12" alpine type "s" subs, infinity 6x9's in the doors and sony 3x8 behind your head, and four 4" sony explodes in the head liner,
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Old 09-23-2011, 03:03 PM
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I made mine out of two 4 inch 90*s

1STGENFARMBOY's Sig:93 W250 auto, DDP 4's, pump max, timming 3/16, 16cm, 60 mm, 4in dp, holley black, BHAF, BHFF, Denny T, 366 spring, P/S intercooler, 3in cooler tubes, trans adjustments, full travel adjustment, twin 6.5in stacks or a 5in tail pipe,
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Old 09-23-2011, 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 09-23-2011, 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 09-23-2011, 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.

justanother92's Sig:1995 F250 PSD 4x4 auto to 5 speed, TS 6 pos,ISSPRO EV2 Pyro and boost, 6637, EBPV Exhaust break with no restrictions. Just bought 96 CCLB ZF, 4x4, 6637 for now.
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Old 09-24-2011, 10:16 PM
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I just welded it to the factory flange.

Click the image to open in full size.
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Old 09-25-2011, 10:32 PM
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Check out Diamond Eye, they have turbo back 4in kits.
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Old 09-26-2011, 10:58 PM
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1989-1993 Dodge Ram Cummins 4 Hx35/H1C Downpipe

chromehound's Sig:Colorado Diesel Truck Club
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Old 09-28-2011, 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

1arock's Sig:"If you're gonna err, err on the stout side", my grandad. 1arock
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Old 09-28-2011, 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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