[eweber]

2.5" or 3" Exhaust???

I'm building a 3.2 L NA VR6 with 280 Cams and I would like to know wich diameter give more power on a VR6

I'm planning to rev it at about 7500 - 8000 http://****************.com/smile/emthup.gif

[Modified by eweber, 1:10 AM 4-5-2002]

 

[hsd16vdub]

Re: 2.5" or 3" Exhaust??? (eweber)

i would still go with the 2.5 or maybe go to a muffler shop and get a 2.75 made

 

[climbingcue]

Re: 2.5" or 3" Exhaust??? (hsd16vdub)

I would only go 3" on a turbo VR

 

[need_a_VR6]

Re: 2.5" or 3" Exhaust??? (eweber)

Go with the 2.5" or check with your motor builder for advice. I can't think of one header with a collector bigger than 2.5" anyways.
Hope you're running alot of compression to get those 280s to idle. I'm having enough trouble with the 276s!

 

[eweber]

Re: 2.5" or 3" Exhaust??? (need_a_VR6)

I'm building it my self, I'm running 11:1 CR http://****************.com/smile/emthup.gif
If you have any Dyno runs of your car, can you post them

 

[pyschovr6]

Re: 2.5" or 3" Exhaust??? (eweber)

2.5"

 

[Gerapudo]

Re: 2.5" or 3" Exhaust??? (pyschovr6)

3"

 

[need_a_VR6]

Re: 2.5" or 3" Exhaust??? (eweber)

Motor still isn't broken in, and Garrett is having some trouble finding the file he thought would work with the car. Still under 4.5k for a few more miles (987!)

Belive me, when I dyno, you'll know, they'll be a thread for it.