NHRA Super Gas Muffler requirements

[prhjf]

I am building a super gas car and I would like to buy a muffler insert to put into my header collector. I want the muffler insert that will pass the NHRA sound requirements guaranteed no questions. Anybody got any recommendations?

[hammertime]

I am building a super gas car and I would like to buy a muffler insert to put into my header collector. I want the muffler insert that will pass the NHRA sound requirements guaranteed no questions. Anybody got any recommendations?


http://www.afabcorp.com/AFCO_Dynatech_USbrake/merchant.mvc?Screen=CTGY&Store_Code=Dynatech&Category_Code=vortex_conesonly

[prhjf]

The Dynatech Vortex cones will pass tech with no problems?

Thanks Hammertime

[hammertime]

The Dynatech Vortex cones will pass tech with no problems?

Thanks Hammertime

If you are unsure contact your div tech director but they are good around here

[sg1586]

NHRA has looked to see if you have somekind of muffling but have never seen or heard of them checking for sound with a meeter !!!!!!

[prhjf]

Hammertime,

I checked with Ben Wilson Div 7 tech director and he would not recommend any brand or type. He suggested I talk with some of the other supergas guys to find out what they are using that passes tech.

[prhjf]

sg1586,

What type of muffler do you use?

[sg1586]

sg1586,

What type of muffler do you use?




The Vortex cones from Dynatech...There easy to install and cheep compaired to some of the other ones out there....

[prhjf]

sg1586,

No Problems with the noise and the tech guys?

[sg1586]

sg1586,

No Problems with the noise and the tech guys?




Nope......If you have the budget get the Danatech collector mufflers if your worried about it........

[SST4530]

We bought a db meter from radio shack and did our own testing before we went to the track, just for our own peice of mind.
:)

[prhjf]

sg1586,

Which dynatech mufflers are you talking about?

dynatech has the

1. collector muffler.
2. slip on race muffler.
3. sprint muffler

Thanks

[prhjf]

sg1586,

Sorry

I just looked at your post again and saw you meant the collector muffler.

Do you have any thoughts on the slip on race muffler?

[sg1586]

The collector mufflers are nice as they don't take up much more room the the regular collectors....And there quiet also..

I had a buddy use a set of Walker bullet mufflers attached to the collector.
If I remember they were only about 60 bucks as he found them in the back of the Walker catalog.. 8)

[prhjf]

sg1586,

Thanks

[SST4530]

I use aset of 4" ID bullets attached right to a set of flowtech collectors.

[prhjf]

blittle,

Thats what I was thinking about doing as well.

Thanks