Zr1 with muffler bypass
11-24-2016, 07:47 PM
#1
Le Mans Master
Thread Starter
Zr1 with muffler bypass
I recall seeing a c4 Zr1-1 where the owner had welded in an exhaust bypass just in front of the mufflers that had manually operated valves. It looked like a really slick set up.
If the owner of this car sees my post - please reply -- would like to put something like this in my c6z. In order to bypass the mufflers all together.
If the owner of this car sees my post - please reply -- would like to put something like this in my c6z. In order to bypass the mufflers all together.
11-25-2016, 05:50 PM
#3
Le Mans Master
Thread Starter
Yep. That's it. Thanks.
11-28-2016, 01:18 PM
#4
Drifting
I recall seeing a c4 Zr1-1 where the owner had welded in an exhaust bypass just in front of the mufflers that had manually operated valves. It looked like a really slick set up.
If the owner of this car sees my post - please reply -- would like to put something like this in my c6z. In order to bypass the mufflers all together.
If the owner of this car sees my post - please reply -- would like to put something like this in my c6z. In order to bypass the mufflers all together.
Last edited by ZR1Bob; 11-28-2016 at 01:31 PM.
11-30-2016, 10:52 AM
#6
Tech Contributor
Actually, that was probably Tony Davlla on the ZR-1 Net Registry forum with manually operated cutouts in front of the mufflers. There are many posts about exhaust cutouts there, and there probably are here as well (I post there as Warp Ten). He gave me the idea to do the same with electric cutouts. I originally had Marc Haibeck do the QTP cutouts as shown in the pictures on his website which eliminated the spare tire carrier. I eventually decided that I wanted to retain my spare tire and showed him how to put them just in front of the mufflers. I dummied up a wooden mockup to be sure they fit and he did the welding. Worked fine and I got my spare back. Also I didn't like the stock toggle switch so I installed a rocker switch hidden under the carpet on the passenger side of the console (did this myself). I liked this set up much better than the first round. And having spent 20 odd years with loud exhausts on my ZR-1s, I really liked having a stock exhaust for quiet when I wanted it and the ability to add some rumble or go full open pipes when I wanted it. Stock '95 exhaust system behind headers and no cats on my '95. --Bob
Last edited by Goldcylon; 11-30-2016 at 10:52 AM.
12-01-2016, 11:34 AM
#7
Drifting
Hi Daryll--This is on my '95 which I sold last February. The pics of Tony's that inspired me were of his exhaust system off the car on a couple of sawhorses. I am pretty sure they are still posted somewhere on the ZR-1 Net Registry forum. He used a manual setup and I think ran cables and pull switches into his console storage area. The work was done on my car by Marc Haibeck and he always does nice work. He uses a silver high heat paint from Summit; says it is the best match for the ZR-1 stock exhaust paint. (As I look at the pics, I guess I should have sprayed the whole system). Marc had originally run the wires to the stock QTP toggle switch he located on the driver's side of the console around my knee. However, I found I could not comfortably operate the switch in that position which moved me to install the hidden rocker switch. (In the early 70s I had installed a similar rocker switch hidden under the carpet on my 1967 Coupe tied to a fuel cutoff solenoid. And it worked: It went missing one night but we found it a few blocks away; according to the Boston police it was the only stolen Corvette actually recovered in the city in 1973.--Bob
Last edited by ZR1Bob; 12-01-2016 at 11:41 AM.