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Re: When is it worth it to remove the exhaust. [Re: 5126brl No more] #991703
06/06/11 10:43 PM
06/06/11 10:43 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Car had 12" turn down extentions, I also when down about 3 jet sizes if i remember right ,Was 1996 I thought it was a wash since the short times where better but lost 1 mph..




Thats strange, I always jet up on a header only car
and jet down with exhaust(due to the back pressure)

Re: When is it worth it to remove the exhaust. [Re: MR_P_BODY] #991704
06/06/11 10:50 PM
06/06/11 10:50 PM
Joined: Oct 2004
Posts: 1,946
Connecticut
5126brl No more Offline
top fuel
5126brl No more  Offline
top fuel

Joined: Oct 2004
Posts: 1,946
Connecticut
Quote:

Car had 12" turn down extentions, I also when down about 3 jet sizes if i remember right ,Was 1996 I thought it was a wash since the short times where better but lost 1 mph..




Thats strange, I always jet up on a header only car
and jet down with exhaust(due to the back pressure)






I was going from OPEN HEADERS TOO FULL EXHAUST!! IS THAT CLEARER!!!

I was only posting my results to help inform the OP,
A simple I misunderstood is fine

Last edited by 4406brl; 06/06/11 11:18 PM.
Re: When is it worth it to remove the exhaust. [Re: 5126brl No more] #991705
06/07/11 12:43 AM
06/07/11 12:43 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Quote:

Car had 12" turn down extentions, I also when down about 3 jet sizes if i remember right ,Was 1996 I thought it was a wash since the short times where better but lost 1 mph..




Thats strange, I always jet up on a header only car
and jet down with exhaust(due to the back pressure)






I was going from OPEN HEADERS TOO FULL EXHAUST!! IS THAT CLEARER!!!

I was only posting my results to help inform the OP,
A simple I misunderstood is fine





I guess I misunderstood... is that better

Re: When is it worth it to remove the exhaust. [Re: GwaiiEagle] #991706
06/07/11 04:44 PM
06/07/11 04:44 PM
Joined: Jan 2003
Posts: 17,800
S.E. Michigan
ZIPPY Offline
I Live Here
ZIPPY  Offline
I Live Here

Joined: Jan 2003
Posts: 17,800
S.E. Michigan
.02 in ET, no change in mph over 4 runs and 3 jet changes...

....which, at the time, seemed like a waste of time.....

However, that was before .02 would have got me a 10
second ET

But! that was with a 3" H pipe, and now I have a larger X pipe, so anymore....who the heck knows

Honestly I'm not sure I even care anymore....

I'd feel pretty dumb to say my street car would run XX.XX, after I take the exhaust off. I don't drive around on the street with the exhaust off so it doesn't matter what it runs without it.

I put some effort into fabricating my exhaust to act as really long header extensions + a crossover to improve power, rather than as a cork to make it quiet....so it would hopefully not have to come off, to do what I want it to do.

That isn't much of an answer is it


Rich H.

Esse Quam Videri




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