jsetzer
09-14-2007, 01:45 PM
I'm finishing up my turbo build and have got to run the car a few times and drive it once.
Currently I have @ 8" worth of downpipe dumping at the front of the car. The turbos do a real good job of toning down the noise. Honestly its ALOT quiter than duals with bullets were and probably about as loud as when I had my sweet thunders ran over the axle.
Anything above idle/cruise and the turbos are just as loud as the exhaust...
I have a set of 40s I was going to run dumped at the axle, but they would be pretty restrictive @ 600hp - but would be almost stock quiet/sleeper...
Thoughts? I don't have inspections, and the cops are not too bad, I have only been bitched at about exhaust after being stopped for something else. I don't think I am really hurting anything. Dumped low enough it shouldn't heat the bay.
Z-RATED94
09-14-2007, 02:23 PM
Like you said, if it's not going to hurt anything and it's not to loud, why bother. Not that this helps, but 30 years ago I don't believe my buddy had anything after the downpipe on his turbo'd 289 Pinto. I don't remember it being very loud at all.
jsetzer
09-14-2007, 02:24 PM
Its just more weight - and work
Z-RATED94
09-14-2007, 02:26 PM
Its just more weight - and work
Exactly
zachisageek
09-14-2007, 02:59 PM
PLEASE don't put 40s behind a turbo.....
turbos love open exhaust and I think you'd be much better off with something large and straight through. I'm thinking dynomax ultraflo or magnaflow....4" or so.
wildweasel
09-14-2007, 08:29 PM
If anything I'd just some pipes out the back. Would not use mufflers, just pipes.
jsetzer
09-16-2007, 01:46 AM
I drove it a short bit again today, its noisy but not obscene. I am going to leave it the way it is now.
Didn't get to go very far, I blew another oil line - switched to hard lines and I should get to tune some more tomorrow.
jsetzer
09-17-2007, 11:18 AM
Just to add some more thoughts if anyone esle ever reads this...
I think I am going to run some exhaust, maybe not all the way back to the axle. My new problem is heat. I have a 160, low fans always on, high @ 175, stock radiator. There is so much under hood heat I just can't get the thing to cool back down where I want it.
I think that at least getting the exhaust gasses out from under the hood should help, at the very least it will keep me from sucking it back through the intake. I may go under the kmember for now, I am running low on mandrel bends, and don't really want to order an entire other box right now.
reamo04
09-17-2007, 04:45 PM
do you have any pics of your setup?
jsetzer
09-17-2007, 05:02 PM
Nothing really showing the exhaust, I'll get some up in a bit.
I have some ideas to try out when I get home tonight, may go under the k member, may just bring my dumps lower and more towards the wheels.
reamo04
09-17-2007, 05:03 PM
sry, i was thinking pics of your turbo setup, i wanna check it out
jsetzer
09-18-2007, 12:41 AM
I ran the dumps down to @ the bottom of the bumper, turned a 90 elbow pointed out @ 45 towards the wheels, they dump on either side right where the k member meets the a arm.
So far temps seem to be much better under the hood.
Pics I have taken so far:
http://good-times.webshots.com/album/559124963HcNQyo