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Update: 4 inch cast elbow - 4 inch downpipe
Old 10-18-2004, 05:59 PM   #1 (permalink)
Lou Fusz Dodge
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Join Date: Jan 2002
Location: Missouri
Posts: 3,854
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Update: 4 inch cast elbow - 4 inch downpipe

Little update here:

I got the cast factory elbow from Dave @ dieselpowerproducts for $20, and the dowpipe from my parts dept for $60 or so...

in to the install:
1) Removed the old exhaust from the cast elbow back, removeed cast 03 elbow and, not too bad, reuseable clamp was a bit stuck, but came off
2) Went to install 05 cast elbow, but had to grind off the lower "locating pin" on the elbow, the one that i guess makes sure the elbow is degree'ed correct
3) install re-useable clamp between cast elbow and turbo

4) cast elbow is all on and secured, on to the downpipe, slid the downpipe up into place and "tried" to fit the hanger in the stock position, NO GO, hanger is off by 1/2 inch, I had to remove red rubber plug to get a flush fit of flange to cast elbow...

At this time all seems ok, (except the ill-fitting hanger), BUT as I am installing the clamp to secure the downpipe I find that it is too small - they ordered me a clamp for a 3.5inch flanged pipe... I need of course the 4inch flange clamp !
After I get that clamp, all should be good

BY THE WAY, to limp to work I used the old clamp and a coat hanger to hold the new downpipe on, and I drove to work with just the downpipe -- , Like a darn school bus (fooled a few kids, )

BUT, egts would not even touch 1000 on a 90mph run on TSTlvl 6/5 with that (of course this was only a 3 foot long exhaust system, )

Parts list -
4.5-05 cast elbow - $20 from ??
Correct clamp - 52121285aa
Dowpipe - 52121600aa

So now I have a full 4inch start of an exhaust system, and the egts are looking to be worth it

I will post an update of egts with full pipe on, cya!
__________________
Tomeygun - STL,MO

Engine: '03 S.O. Cummins, NV4500
Fuel: PMCR by TST, F1 Flux 2's, GDP WALBRO Kit, Floor-It CP3
Air in/out: Sledpuller 66 by HTT, 5" stacks
Trans: SBC DD3600#, SRT-10 Shifter row'n the gears
$$Wants$$: F1 Hellfire's, TireGate, Ladder Bars

Maybe 600hp?
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