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-   -   Bending tailpipes (http://www.hotrodders.com/forum/bending-tailpipes-212263.html)

roger1 01-11-2012 10:51 AM

Bending tailpipes
 
I have a '55 Chevy BelAir and my exhaust is complete with the exception of my tailpipes.

I have purchased these Flowmaster 2 1/2" tailpipes:

http://static.summitracing.com/globa.../FLO-15816.jpg

I have now decided I would like to have the tailpipes exit at an angle just behind the rear tires instead of straight back.

If I take these to a muffler shop and have them bent and installed, is that going to cause a restriction that would more than desired?

A friend told me that the restrictions caused by bending without a mandrel bender are bad.

I've also been told that muffler shops with mandrel benders are few and far between. Is that true?

Suggestions?

68NovaSS 01-11-2012 11:00 AM

If you don't mandrel bend it, sat just bend and kink it, sure, it's a restriction. I can't imagine any muffler shop not having a mandrel bender, expanders and all of the associated tools. Maybe San Angelo is a small town, but your not far from the big city, there are Meineke and Midas shops everywhere near you. One bend, done correctly isn't going to make any real restriction, look at the course it takes up and over the differential.

Edit: I mean around Dallas/Ft. Worth, San Antonio and in between.

matts37chev 01-11-2012 11:10 AM

A small angle would be fine
A 90 degree would put a good size kink in them
Just tell the guy at the muff shop your concerns about the kinking
He can do it in two smaller bends

rsfyj 03-20-2012 07:27 PM

Exhaust pipes
 
my last Hot Rod a 1947 Ford coupe w 390 engine I made my dual exhausts with 116 separate gas welds and cuts to get everything to fit, Tedious but it all worked nice

roger1 03-20-2012 07:37 PM

I put these pipes on as-is just for temporary.
Well, coming straight out the rear started to grow on me and I've decided to leave them this way.

I did buy a 2 ft. long piece of 2 1/2" stainless that I'm going to cut in two.
Then I'm going to cut then ends of my pipes off and butt weld the stainless pieces on the ends. I didn't really care for any of the tips out there and decided to do it that way.

crussell85 03-20-2012 07:38 PM

Quote:

Originally Posted by rsfyj
my last Hot Rod a 1947 Ford coupe w 390 engine I made my dual exhausts with 116 separate gas welds and cuts to get everything to fit, Tedious but it all worked nice

I would almost have to see that exhaust to believe that you made that many necessary cuts and welds. Not calling you a liar or meaning any disrespect at all, just sayin

roger1 03-20-2012 07:41 PM

Picture them stainless.

http://www.hotrodders.com/gallery/data/3537/exhaust.jpg

Irelands child 03-20-2012 07:46 PM

You can take the pipe sections to any muffler shop and they will "blow out" the pipe to fit over what you have and then either clamp or weld for a better connection

roger1 03-20-2012 08:08 PM

Quote:

Originally Posted by Irelands child
You can take the pipe sections to any muffler shop and they will "blow out" the pipe to fit over what you have and then either clamp or weld for a better connection

Thanks.
I believe a butt weld will be plenty strong. The hangers will be right in front of the butt weld so it only has to support the weight of 1 foot of pipe.

I really don't see why a butt weld wouldn't be as strong as the pipe itself anyway since I'll be removing the pipes so I can get a good weld all the way around the pipe.

I have V clamps at the rear of the mufflers so removing and re-installing them is a snap.

rsfyj 03-21-2012 02:49 PM

Quote:

Originally Posted by crussell85
I would almost have to see that exhaust to believe that you made that many necessary cuts and welds. Not calling you a liar or meaning any disrespect at all, just sayin

that's the way it was many bends and no room beneath the car, life is a ***** sometimes

rsfyj 03-21-2012 02:55 PM

Quote:

Originally Posted by rsfyj
my last Hot Rod a 1947 Ford coupe w 390 engine I made my dual exhausts with 116 separate gas welds and cuts to get everything to fit, Tedious but it all worked nice

I also cut the car in half right through the doors, roof and frame all around and shortened it 32 inches and then I gas welded the whole car back together doors, roof frame floors and this took longer than the exhaust work. I went through a lot of Oxygen and acetylene.. the good ole days,,never knew MIG welders were around couldnít afford one any way.. lots of you younger Hot rodders donít know what it was like years ago we didnít roll in cash and parts and chrome everything. My 1st dirt car the roll cage was made of Cow stanchions from a barn Fire,some of you guys have no idea????

Irelands child 03-21-2012 04:34 PM

I MIG welded up the exhaust on my '31. I have 7 welds on the pass side and 8 on the drivers plus one in the center of the 'H' pipe. That's 16. Had I gone over the rear axle, I would have added 3 more per side for a total of 22. There are no crinkled or crushed bends. Could I have done it with less - sure, if I had access to a mandrel bender. 117 - ??????

rsfyj 03-21-2012 04:47 PM

probably 20 alone on the headers
 
i used 1968 390 headers and had to make dog legs for clutch linkages and bell housings etc none of you know what I ran into here duals over the axel were different all the way through. You just don't know I made the header adaptors from the headers to the mufflers all of it everything except the header flanges I didnt have to modify. I can see know most of you never had a real challenge yah all had the right stuff to begin with, eheheheheh. All made from 2 sections of straight pipe i made all the bends with a hack saw and gas welds. no tubing cutters or power hack saws no mig welders all the old way.. eheheheh

bigdog7373 03-22-2012 09:47 AM

I like how it looks now. Maybe mock up the stainless pipe first before cutting or welding anything? I wouldnt want to get to flashy with it.

roger1 03-22-2012 10:27 AM

Quote:

Originally Posted by bigdog7373
I like how it looks now. Maybe mock up the stainless pipe first before cutting or welding anything? I wouldn't want to get to flashy with it.

Thanks and I agree.
However, if I keep them exactly the same length, I don't think that they will add much bling. Just cleaner.

I looked at the angle cut and rolled edge tips that are out there and I thought those would be too flashy. I want to keep the car looking vintage.

Here's the 2ft stainless pipe I bought that I will cut in half:

http://www.hotrodders.com/gallery/da...7/IMG_9097.JPG


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