How did you do it? My exhaust shop that i always go to, little backwoods place.. great guys and cheap said there is no way to keep the exhaust pipe 3 inches in diameter to go over the axle.. they said it would end up getting crimped and being like 2.25-2.5 all around. they suggested to just get a 2.5 inch mandrel bent catback which would be better.

can you post pics of the under the car? thanks!

and does anyone know where I could get a 2.5 mandrel system or a 3 inch system?



LE61T PTE6262 Powered

My turbo car has 3inch mandrel bent exhaust. It can be done. I can't get pictures right now because the car is somehwere else.



FU Tuning

why do u need it over the axle

they need to do the exhaust with the cars tires in the normal position if they do it with the axle hanging it will end up hitting the exhaust.. mine its every once in a while but other then that its great. 3 inch is the way to go.....



. member 1244or55
.http://www22.ocn.ne.jp/~cavalier

mine is 3in and it easily goes over the axle. even after hitting speedbumps its still at just under 3in. your exhaust shop doesnt know what theyre talking about. sorry.



I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26

yes they do hypsy.. take pics for me...

they do amazing custom work, i have seen many cars they have done..



LE61T PTE6262 Powered

I want it all 3 inches if I pay for it. They explained that making a pipe to be 3 inches up and over that axle and keeping it a full 3 inches would be near impossible.. without the axle hitting it



LE61T PTE6262 Powered

im lowered about 1.75in in the rear and we still got mine in there. heck...we even had to make ours from 180 degree U bends we had laying around because we dont have a pipe bender at the shop i work at.



I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26

Mine is 3 inches over the axle also. It can most definately be done. My car is also lowered.

I had mine done full 3" as well. It makes a little noise when going over large bumps or potholes. Its the full 3" the whole way back, over the axle and all. I dont have a good pic right now of it. I'll have to search for one.





Check out my Part Out List!! Great Prices !! http://www.j-body.org/classifieds/detail/52925/

Phil hit me up in email or call nikki or Matt to get my phone# My guy that made turbo can Fabricate u one exactly like mine with whatever muffler and cat u want for 1/2 decent price (Wagner Motorsports) Andy is in York,PA. also.

QBE your exhaust shop blows I doubt they know what there talking about.

but who ever did this work did an amazing job you only wish your engine could look like this

















Thats yours right? not trying to be an @!#$ hehe. but yeah Im am trying to figure this out also so some pics would help I wanna see hypsys car some more anyway.


"Kick azz is my boost hero!!! "

its do able you just have to hug the gas tank and frame rail







R.I.P. Brian Klocke, you will never be forgotten

thanks fetter



LE61T PTE6262 Powered

thats a huge shop! BTW sexy exhaust.


"Kick azz is my boost hero!!! "

yeah every shop does their own thing. I brought mine in just today and the guy working on it was convinced that he couldn't do anything bigger than 2 inch. I told him to go as big as possible cuz I'm in a hurry to get it done. He stuck on 2.25 inch. I gotta get a different system anyway cuz no one in town even has a fricken mandrel bender! They only do crush bends. He charged me 200! just for a piipe from the DP to my magnaflow muffler. I got screwed, but I'm tired of dealing with it so I just wanted it over with.

Jcavi, isnt that aarons engine from turbo tec?

Quote:

I want it all 3 inches if I pay for it

aww come one phil, dont cut yourself that short buddy.

but i have 2.5 piping all the way back. no cat. i have a cut out right after the downpipe.


13 psi and climbing......

Here is the Johnny Mack exhaust....... 3"

Attachments

JMTS Catback2.jpg (79k)

SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap

Jcavi wrote:QBE your exhaust shop blows I doubt they know what there talking about.

but who ever did this work did an amazing job you only wish your engine could look like this




Damn, who's engine is that?















Thats yours right? not trying to be an @!#$ hehe. but yeah Im am trying to figure this out also so some pics would help I wanna see hypsys car some more anyway.

~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

WHITECAVY wrote:

Jcavi wrote:QBE your exhaust shop blows I doubt they know what there talking about.

but who ever did this work did an amazing job you only wish your engine could look like this




Damn, who's engine is that?















Thats yours right? not trying to be an @!#$ hehe. but yeah Im am trying to figure this out also so some pics would help I wanna see hypsys car some more anyway.

Sorry, messed up that quote

Who's engine is that?











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

I'm guessing your exhaust shop is just being conservative...they've probably learned that it's just not worth it for them to create systems that are troublesome in ANY way as far as clearance on surrounding components is concerned. Heat is one factor, noise over bumps another, rubbing through items it contacts, etc. I applaud them for holding the line on quality!

But as you've seen here, if you are willing to put up with the occasional 'thump over a bump'. etc, it can be done.

I'd also like to add...we have found that, on the average, 3" exhausts aren't really required unless you are running over 350 HP. A well-made 2 1/4 or 2 1/2 can actually be more efficient at lower power levels due to improved velocity and scavenging effect...we've actually seen cars in lower power ranges LOSE low end power from the installation of a 3 inch, with little if any improvement at top end. Just food for thought...



Bill Hahn Jr.
Hahn RaceCraft

World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com