The Great Flowmaster Super44 drone experiment of 2012.

Yeah, I was thinking of placing another set of hangers right near those flex-tubes to lift the front half up an inch or so. No reason I couldn't move them closer to the collector. I have a bung in the pipe just south of the collector for A/F Ratio gauge and to hook up at the dyno, but that is just behind the collector.

Like I said, not done yet. I still need to tighten everything up, fine tune and adjust everything, the weld it all down.

I don't think I will need tailpipes, now, other than turn-outs. Still plenty loud, in fact, I did not lose any of my exhaust sound, just lost the interior resonance.

 

Glad to hear you cured it. I know how you feel. :bananaman

 

should be carefull about prestressing those flex's by lifting them too much all at once, is all.

then maybe weld the o2 bung into the collector?

IMHO.. most of you issue was alleviated when you got those cheapy hangers off the floorboards. The rest was just "isolated gravy".

Good luck on getting it all buttoned up and back on the road where you can enjoy it.

 

I agree. The cheap hangers and MOSTLY having it mounted to the floor.

I think putting flex at both ends helped dramatically as well. Before, it was very rigid all the way though. Not a bit of flex or play. So all the vibes went straight back into the body.

That was the only reason I used the flex tubing...just to get a little of the rigidity out of the front half. The new hangers give it plenty of flex at the back half.

 

glad you cured it. If you decide on different mufflers, I have a set of used super turbos your more then welcome to.

 

Thanks Matterick, but I think I will be sticking with the Super44s. They are still loud, but not obnoxious inside the car anymore.

As for the height of the flex tube, I noticed that the first chunk of pipe after the collector was welded at a slight angle, so by rotating the pipe a touch one way or the other, I am able to lift or lower that flex tube. I got it about an inch higher than it was.

Also, finished welding up the passenger side tubes and will pull the driver side off next time I get a break and time to work in the garage.

 

Scoop. Can you clamp in those flex pipes. Easier to change later.They have a nasty habit of starting to ratttle without a support on the pipe after them. Put s alot of load on the flex and they start to crack inside and rattle. I would have a hanger on the pipe downstream of them.

 

I really don't think you need the flex-pipe, but to each his own. Your drone problem was clearly the result of how the system was mounted to the car. I doubt that losing some rigidity is helping anything, and rigid piping will only be more durable.

 

The flex pipe also allowed me to move the exit angle of the exhaust, since I do not have a pipe bender. I pulled the tips out toward the rear tires a bit, rather than exiting straight out the back toward the gas tank and rear axle.