I just got the Buschur Racing Exhaust, Cat Delete, and 3in DP. For some reason, I cannot align the down pipe. It is rubbing against the fins on the transmission. It seems like the DP does not extend low enough and the bend that should curve around the fins on the tranny is not curved enough.

Any one have similar problems with Buschur's DP?

Here are some other things I noticed when trying to fit everything.

After installing the bushings to allow the 3in DP to clear the tie bars, the DP has about a centimeter of clearance above the tie bars. Does this seem high?

The entire exhaust seems to be slighty shifted towards the driveshaft. the cat back, after connecting to the DP actually touches the guards on the driveshaft.

It seems impossible to align both the DP to the O2 housing and have the hangers attached to the rubber holders.

ANy help would be great. For now the car is sitting on jackstands

 

I would say you just have to install it as instructed and then play with the slip clamps, rotating the parts to see if you can gain the clearance you need. You did remove the stock doughnut gasket from the o2 housing correct?

If all else fails, you may want to just contact Buschur directly. I can tell you my DP does barely clear those fins on the tranny, but I got around the driveshaft issue by rotating the axle-back portion w/ the b-pipe attached.

Good luck.

 

I am on my second DP. The first one put the output of the test pipe aimed at the driveshaft, and neither of the factory bars would fit without hitting the DP. So they sent me a second DP, no questions. Good customer service. On the second one, the bars cleared (spacers aren't needed), but the output of the test pipe still aimed toward the driveshaft. So I took the DP off and made the screw holes bigger. This allowed me to rotate the DP on the O2 housing enough for the exhaust to aim straight back, instead of hitting the driveshaft (actually the U-joint and driveshaft carrier, whatever it's called).

Sure, I shouldn't have to do this on a $300 DP, but it worked. After making everthing tight, I have plenty of clearance the whole way back. No rattling or anything. Also, like webguy said, if you rotate the cat-back pipe where it attaches to the test pipe, it will pull it farther away from the driveshaft.

 

I installed my full exhaust, cat delete and dp from bushur racing...the dp went on with no problem at all along with the cat delete. Then the cat delete sorta turned to the driveshaft, but once I put the rest of the exhaust on it pulled it away so everything worked out fine. Good luck to you and you will be very happy with your purchase from buschur racing!

 

Thanks everyone, I'm gonna try playing with the DP. See if I can make any changes.

Another thing though, even before attaching anything else no cat delete, no cat back, JUST DP. It was already hitting the tranny fins. Took me 2 hours just to screw in the O2 housing bolts because I had the hangers attached first and the was pushing against the fins. Only when I removed it from the hangers was I able to attach the DP to the O2 housing.

As for the Donut gasket, that is the round piece that kinda drops into the stock DP right?

My other quick fix was to consider puting in some type of gasket between the DP and the O2 housing. This should push it down a hair, and hopefully allow the rest to align easier.

A side note, the DP has been Jet Hot coated, but I doubt that would make any difference.


Thanks for the adcvice.
As for Buschur, I bought the DP off someone else brand new. But they seemed helpful. Hopefully they will work with me for a fix.

 

Well, thanks for the suggestions, it solved one of the problems.

Rotating the exhaust helped with the catback touching the drive shaft protector things.

BUT, the DP still will not fit. As longs as it is bolted in, it touched the fins. Im considering cutting the holes out a bit wider to allow me to turn the exhaust. Any suggestions as what to use to bore out the holes in the SS exhaust?

 

I used a die grinder with a carbide bit. Same thing used for porting exhaust manifolds and turbine housings. That's about the only thing I know of that will cut through the SS easily.

 

You may have gotten a DP that was machined incorrectly.

WHen I got my Buschur Exhuast, they called me upon its delivery and notified me that some DPs were machined a bit off.

Give them a call, they rawk hard.

 

hmm ok, I'm having this same issue where the flange ont he catback is hitting the driveshaft during low RPM's... perfectly still it sits about .5' away from the driveshaft, but once things get moving it vibrates against it.

What do you guys mean by "rotating" the catback pipe?

 

i would not be cutting a 300 dollar downpipe. make them give you one till its right...or buy one that doesn't use clamps

 

I had the same problem and no matter how I would "rotate" the exhaust It would still hit. I think they mean like rotate the pipe with the hangers loose.

I also installed kartboy hangers which helped some... I finally ended up just grinding a little off the driveshaft bracket it was hitting.

If you have a lift you could probably fix it without doing any grinding.. but I was frustrated and my back was sore from working under the car.

 

Have the shop put a slight bend at about the oil pan and that should get the clearance you need. It only needs a very slight downward bend in it.

 

I have the kartboy hangers too and am going to installe the rear two (easy ones) tonight and see if that helps at all. It should- since it will minimize any movement towards the muffler.

I seem to have some hitting at the oil pan from the DP but the rubbing I'm concerned about is the catback flange hitting the driveshaft. This can't be good.

Last night a friend and I loosened all the bolts, and aligned the exhaust better and then tightened them all starting at the cat delete and moved back.

This helped a bit but I still have rattling/rubbing. I'm going to try the kartboy hangers and see if that fixes it... If not I may have to do some more rotating and moving.

 

Did you loosen the bolts at the turbo to see if you can move the dp a little bit?

 

no- we didn't go any further back then the cat delete.