I am also considering exhausts. What diameter do i need, hyper max makes one the is 3.5 inches in diameter. Is this the right size for this truck, or does it need to be bigger considering that i am dumping a lot more air in to the motor. Do i need to run dual exausts?
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1992 standard cab f-250, 7.3 idi diesel, custom intake, hypermax exhaust G-tech computer, no soup bowl, preparing to turn up the fuel pump!!
Please fill out your truck's information in your signature so we can see what you have everytime you post. That would help us out alot.
Anyways, about your question- yes, 3.5" is plenty for our trucks- you won't get much, if any, gain at all going any larger. It WILL have a deeper tone the larger you go, however.
Do you have access to a shop with tools to do an exhaust job (mainly, a MiG welder)? If so, it would be much cheaper to just go to an exhaust shop and buy your own piping, then fabricate up your own.
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1994 Ford F250 4x4: 7.3L IDI factory turbo, supercab longbed, E4OD *DEAD*. ZF5 swap,Dana 60 swap, GM 14 bolt rear w/ 4.10s, 4" exhaust from stock downpipe back to a 5" stack, IP maxed=1100 degrees max pulling uphill, "modified" wastegate=11psi max,99+ F450SD cab/chassis leaf springs in rear
--motor/trans sold--
2000 VW Jetta TDI = 48+mpg
1997 Dodge 3500: 2WD Cab & Chassis, 12V Cummins, 47RE Automatic, Dana 80, 194,000mi. Parting out.
1989 12V VE Cummins out of Chevy C60? at the machine shop...going into the Ford.
i made my own 4inch exhaust using 4in emt pipe and a miller stick welder (3/32nd 7018 rods)it took some time but i finshed it in about a week and it sounds great with the 8in stacks.
I believe that Hypermax gives you 3.5" from the Y-pipe back. Hypermax has a good price but by the time you add on the shipping costs, you may have other alternatives available.
The original y-pipe on the IDI's does not provide for the best flow-thru. I think that Banks has a 3" y-pipe with improved flow.
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1994 F250 HD, IDI Diesel, 3:55 gears, K&N filter, Hayden Tranny Cooler, Monroe HD SensaTrac shocks, dual pillar pod with temp & tranny guage, poly fuel tanks
thanks
I think I will by some exhaust tubing and make my own because i want it to exit the truck forward of the rear axle, I know that banks make a bigger diameter y pipe, but i thought that it was only avalibe through purchasing the turbo kit, is there any way to just buy the y pipe?
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1992 standard cab f-250, 7.3 idi diesel, custom intake, hypermax exhaust G-tech computer, no soup bowl, preparing to turn up the fuel pump!!
I have the Banks Y on the 86. Nice piece. I picked up 1 mpg with it and 3" exhaust, straight thru muffler. Now I HEAR that Banks discontinued them.......
I just put a Walker Dynomax system on one of my work trucks. Decent Y pipe, the rest is 4" Powerstroke parts.
If I had to do that one again, I would have used the Auto-Jet one. Sorry i don't have links for ya.
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Mine: 91 F250 Reg Cab 4x4 5spd 7.3IDI 4.10LS 145,000 miles. Banks Sidewinder 92 D60 F axle w 97 brakes and Powerlock. Lift: about 4" over stock 250. 33x12.50x16.5 Pro Comp MTs Magnaflow 12" muffler. Sees dirt everyday. Used to haul hay, wood, feed cows, check fence.
Hers: 96F250 CCSB 7.3 PSD 4x4 5spd 3.55 LS 190,000 miles. Puchased 7/03, Looked for a 5spd CCSB for a year!Dana 60 front axle, at stock F350 height (for now) Energy Poly bushings, Bilsteins, 305/70/16 Pro Comps on 16x10 Weld Outbacks, AFE Pro7,TYMAR 3x3.5x4 downpipe,TYMAR 5" straightpipe, gutted EBV, IH Non EBV pedistal,New Alliant AC Injectors,(stage 1)Cal reg kit, SBC Con O clutch, permenent clutch bushing fix, AC mod with a different twist, AMP Powersteps with custom brackets and wiring(one of 2 OBS trucks with them according to AMP) Line of Fire. Sees dirt everyday.
My Company pickup: 86 F250 6.9 C6 320,000 miles Co trucks 5 89 to 94 IDI's, plus about 50 more diesels.
Diesel Mechanic 28 yrs
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