ITB Golf exhaust

[shwah]

I would not drive my car with any of the exhuast configurations I have used, without earplugs. Did so once by accident. It is bearable with the rear exit, but way more comfortable with the plugs.

[S2_ITBVW]

I need to add "earplugs" to my shopping list.

[S2_ITBVW]

Sorry, but I have to comment one more time in order to post a link in a new thread.

[billf]

Seems one reads rules over again when building a new car. These two rules would seem to NOT allow the use of an under body, or turned down exhaust...I believe.

IT rules paragraph 1 g. "Exhaust shall exit behind the driver, and shall be directed away from the car body."

Glossary defines "Body - All parts of the car licked by the airstream and situated above the belly-pan/floor with the exception of the roll bar or cage." (Bold and underlined are mine.)

Since the "turn downed pipe" is below that point defined as the "body", I question its legality.

Plese show me how I can use the pipe below the car...I really need it. I have raced three cars with the pipe ending in a turn-down, and only now saw the words clearly.

Any thoughts?

Bill

[Gary L]

Bill - I don't currently have a "turn-down" exhaust, but I have in the past; here's my cut on that rule. The phrase "...directed away from the car body" means just that - it's pointed in a direction that is not towards the car body. The fact that it's not adjacent to the car body is irrelevant.

[jimbbski]

I have raced cars with their exhaust directed downward and that ended before the rear axle. To LOUD! The whole car body becomes a sound chamber.

My current car has a 4-2-1 header into a glasspack muffler with a tail pipe that follows the stock configuration over the axle and below the fuel tank. It ends in a convential oval muffler (2.5 inch dia.) that had been modified to shorten the route the gases have to travel. I think it adds very little backpressure beyond what the glasspack adds and tones done the rasp you get using only a glasspack. I like the sound and its not going to damage your heading.

I once raced a friends car that had it's exhaust end just past the header, Tech didn't chatch it and it was only for this race. I was going to "fix" his exhaust after this race and before the next race as part of the payment to him for letting me drive his car. After 30 minutes my ears had a ringing in them for 2 days afterward.

[Joe Camilleri]

I have a Puckett header to a mandrel 90° and glass pack exiting in front of the RR tire. Never had a sound issue or need to wear ear plugs.

http://gallery.me.com/joecam06#100008/DSC03331