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Hanging side pipes on a MkII

3.4K views 11 replies 9 participants last post by  Ptstew2467  
#1 ·
Can someone post the build manual pages on how to hang side pipes? I need to redo mine and I have never seen a manual on how it's suppose to be done. Thanks and Merry Christmas.
 
#2 ·
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#3 ·
Do you have 4 into 4 headers? If so skip side pipe mounts. My MkII has 44k and is 15 years old and has never had mounts for the pipes. Every time I saw a thread where the bracket had been torn off the side of the pipe, I said to myself that I won't ever have that problem.
 
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#4 ·
I had the same problem that Craig stated. The brackets will tear off the pipe (usually at a bad time). A friend built a gusseted brace matching the shape of the pipe welded it onto the pipe and we did a solid mount to the frame. Problem gone. Good luck.

tim
 
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#5 ·
FFR's original method of using the side support brackets was causing many issues with the welded mount on the side pipes cracking. Seem the engine torque wasn't taken onto consideration, and the bracket didn't have enough give, so it stressed the weld. In some later cases, even when the support was allowed to move slightly, if it was mounted incorrectly, it would contact the frame, thereby preventing further movement, when under torque. Eventually from metal fatigue, the welded pipe mount would again crack..
A few builders worked on the problem, to allow the bracket to have maximum flex, and mounted it so there was no chance of it hitting the frame. The backet didn't actually offer much support mounted this way, as far as taking any weight. But it could help with the stress on the headers, when inertia forces are at work. The thinking was that this may help prevent the natural centrifugal forces, wanting to whip that large weight out sideways during hard cornering. It make sense as you have 40-50lbs, hanging off of just eight header bolts. There has to be quite a bit of stress on the header flange. Regardless, this flexible hanger mounting method, seemed to end the cracking issue.
This is one way it was done.
361649


This next picture is the current way FFR suggests mounting the bracket. If you do it this way, only use one bolt on the sidepipe, and leave it slightly loose (nylok nut). Also don't crank down hard on the bolt on the end of the hanger, where it attaches to the frame. Flexibility is key.

361650
 
#9 ·
Mine also tore off the bracket years ago.

I simply uesed a universal tailpipe hanger, attached the the solid end to the frame near the exit of the side pipes, and attached the flexible end to the side pipe near the end, so I could to a bolt-through for the mount.

Many opinions, but I don't like to let the pipes hang, only supported by the motor.
 
#11 ·
Here's how I did my Mk IV. First picture is from the manual. The second is the hanger I made and how I attached it. Allows for lots of movement while still supporting the pipe.

Norm
 

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#12 ·
When I had to replace my original side pipes with new ones from FFR, I did my Mk 1.5 exactly like Norm B did it. Works great.