bvidler

Hey everyone, Im looking to install a second tank on my truck and the ideal location seems to be beside the stock tank. Only way i can see to do this though is to shorten the exhaust pipe up ahead of the rear wheel.
Wondering if anyone has done that? or What the effects of a shorter pipe would be on these trucks?
thanks in advance!

BHD

Effects? Hearing loss, needing an amp to listen to the radio, and not having conversations at a normal level in the cab.

If you want another tank look into getting one out of a RamCharger. It sits behind the rear axle, is 35 gallons, and is a fairly easy install. Look at my FireWagon build in my signature, I deleted the in cab tank and used one out of of mid 80's RC.

oliver foster

BHD nailed it.
RC tank IS the best fix.

Poncho my '91.0 W-250 had a side dump exhaust that was just in front of the rear tire when I bought it. It was STUPID loud. When my daughter and I took it to Carlisle 5 years ago, we wore earplugs for some of the 10 hour drive it got so old.
Now I have a complete D.E set up and it is much nicer to drive in.

bvidler

Ok thanx folks. Thats some good details there. I already cant have a normal volume conversion in the cab. Previous owner put on a 5" exhaust.

Rear tank was my second option but i just really like the spare tire there.

Anyway thanx again.

bvidler

I guess while we are at it....what would the effects on the engine be with a pipe shortened that much or to the back of the cab? Would you want to increse size?

thrashingcows

IF you already have a 5" exhaust system, then you already have 1" too much.... Anything over the stock 3" exhaust is more then enough for our trucks, unless you have a crazy race motor and even then I bet a 5" system would be more then enough to handle it.

N. Besonderes

I have 5" pipe from the FlowMaster back, turned out in front of my tire and the engine noise is still louder in the cab than the exhaust noise. Maybe it's the muffler though.

-Niemand

oliver foster

Poncho had a 3 inch exhaust system, with the before the rear tire dump with NO muffler and a 4 inch tip. It was LOUD. My daughter would tell me she could hear me coming to pick her up from miles and miles away.

u2slow

My current, tolerable, daily-driver combos are:
- 3" with a muffler and a 3.5" tip turned out ahead of the rear tire.
- 4" straight pipe that goes just over the rear axle, and points down.

bvidler

Ok so ill put this idea out there see what yall think or if anyones done similar.

Ultimately i want to put a second tank on the truck and i dont want to loose my spare tire spot in the rear so next best location is beside the stock tank. Obviously the exhaust is in the way. So a thought is to cut the pipe around where the frame angles upwards (its 4" pipe here) Then fabricate new pipe to dip under the frame and then follow the side body channel back towards the rear tire where it would then turn out. Anyone routed theirs like that for some odd reason?

bvidler

Or think it's at really bad idea?

u2slow

I believe you're well in the tank space by the time you turn out after the frame kick.

On my lifted truck, I'm going to swing the downpipe outside the frame, along side, and then up - for a single stack against the headache rack.