| 4pipes |
08-18-2010 06:34 PM |
Sidepipe vibration isolation
For those of you that have isolated your side pipes from the frame, could you post a picture so I can see some of the isolation methods?
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| Dirty Harry |
08-18-2010 07:33 PM |
I don't have a picture, but I used some rubber bushings normally used on the top stud of a shock absorber on our daily driver. Cheap and effective.
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| patrickt |
08-18-2010 08:17 PM |
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| 4pipes |
08-18-2010 09:09 PM |
Thanks, but I was hoping for some responses from Kirkham owners.
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| Rick Parker |
08-18-2010 09:44 PM |
Contact Kirkham direct.
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| pusherfans |
08-22-2010 05:53 PM |
How much vibration come from this? Is the purpose of this to feel less vobration as a driver or something else?
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| Rick Parker |
08-22-2010 08:06 PM |
The CSX cars used a bracket similar to that in Patricks picture above. The bracket was welded to the pipe and is stable in two planes, fore/aft and vertical shear (supporting the weight). It would slide between 2 tabs that were welded to the chassis and a bolt passed through the 3 pieces with a rubber tubular isolator (like a piece of 3/8' fuel line (with bolt through it) inside a metal tube about an inch long that was welded to the bracket on the pipe. It locates the exhaust pipe and dampens the vibrations and lessens the harmonics created by the exhaust impulses. Very effective.
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| car4jim |
08-22-2010 08:16 PM |
My Kirkham sidepipes have a bracket which is essentially a stand-off welded to the sidepipe that bolts to the frame. It's all factory stuff and designed to work with the car. No rubber bushing. As far a vibration.....the whole car essentialy vibrates with a 600 HP big block!! I would call the Kirkhams to sort out!
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| maurice19 |
08-22-2010 09:09 PM |
Hi Dave,
I remember Morris`thread on his Kirkham #259 over on the Gasholes website goes into a lot of detail for the back mount. I just checked and a good pic is on page 64 of his build site.
Are you coming up to Sears Point for SACC?
Maurice
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| 4pipes |
08-22-2010 09:13 PM |
Thanks, Maurice. I'll be at SAAC35 on Saturday, hope you see you.
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So I go and take pics, and then realize I haven't loaded Photoshop into my new laptop yet. I'll try to get that done tomorrow. Otherwise, you can eyeball it at SAAC.
It's a two-piece affair...one long arm welded to the pipe, and another long arm welded to main frame tube...joined together with a good sized bolt. Allows for fine adjustment of the pipe height and the long length probably provides a certain amount of flex without it being rubbery.
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