Is the any advantage...or disadvantage of maintaining the same size exhaust from the header to the tailpipe. The Hooker headers are 3 inch hooking up to flowmasters ...I was thinkin of keeping them 3 inches the whole way. Comments or suggestions would be greatly appreciated.
On a stock set up, clearances on the left side of the gas tank are slim at best. Its hard to get much more than a 2" pipe through there. Anything bigger and yop got to either dump them somewhere other than straight out the back, or drop them low after you come over the axle. My suggestion is to put a Mustang gas tank in there on the 71 and later models http://www.maverick.to/gtu_faq.php
Because of smog laws I needed to stay in the origional configuration for the exhaust...no dual exhaust! so I have a single 3" with a 40 series (2chamber) Flowmaster. Its a little loud for the street. I would think dual 3" pipes with 50 series (3 chamber) would be sweet. I might consider using Magna flow XL turbo mufflers.
Sorry Mav....I didnt mention its going on the 70 model..dont know if the makes a difference or not...the 73 Grabber has become the donor car...didnt know if there was a distinct advatage in maintaing same size exhaust the whole way
a racing buddy of mine told me that unless you use mandrel bent pipes, you lose almost a half inch going over the axle. a 2 and a half inch pipe made and bent at a muffler shop becomes a 2" in volume. he didn't believe this until he spent the cash and got mandrel bent pipes. without doing anything else, he picked up a half a second! his best run (not sure what year jetta but it is a 6 cyl) is 9.6
Mavaholic is correct, My 3" fit fine on one side but would not have fit very well or at all on the other side. I would like to do the Mustang tank swap and have real dual exhaust. (and more fuel) I just want to make sure I dont need to get my car inspected by the smog police again.
My '70 has 2 1/4" tailpipes. It's pretty tight, but the guy at the muffler shop said he was sure he could get 2 1/2" pipes in there. I stayed with 2 1/4" because anything much bigger than that is a waste on a 302 that won't see the far side of 5500 rpm.
you can never flow too much out..youll always get more intake volume than you will ever hope to get out the exhaust
Unless you have someone in your home town that has a mandrel bending machine, your best be would be to go to JC Whitney and order some mandrel bends. You'll want to decide what bends and how many you will need before ordering. Some of the more hi-tech exhaust companies will sale kits for doing dual exhaust jobs, but these kits are ususally more expensive than just buying the stuff from JC Whitney. Many other companies offer mandrel bends, it's just that JC is probably one of the most inexpensive. PS. They offer everything in stainless also.
I agree with Grabber, If it wasnt for smog laws I would swaped my fuel tank for a Mustang and installed 3" duals. My 93 mustang went from stock exhaust to 2 1/2 with flowmasters and the final exhaust was a 3" system with turbo Mufflers. There was a noticeable differance with the 3", if I remember correctly I gained 2-3 tenths in the 1/4 mile. The only disadvantage I can see with the 3" is that is seams a little louder than 2 1/4" or 2 1/2" exhaust systems.
you can never flow too much out..youll always get more intake volume than you will ever hope to get out the exhaust Well, so much for all those useless theories about exhaust tuning.
Is there any inherent probs with turning the pipes out the side of the car?..say behind the door in front of the rear wheel well...this would seem to eliminate a host of sizing problems not to mention giving the car a better look if its done right
I had a friend do this...not on a Maverick but a 78 Olds. He had a trailer hitch that was in the way.
