V-Band flange question...how to straiten? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 14 Old 07-17-2009, 11:08 AM Thread Starter
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V-Band flange question...how to straiten?

Ok, I got a hot side turbo kit with V-Band flanges...problem is, they look to have gotten too hot when welded to the collector and mating pipe and have warped. Is there a siple way to flatten that out or a suitable mating gasket that can handle exhaust heat?

I thought about using marking compound on a flat surface and taking a smooth wheel to it until it's pretty close and finding some sorty of cut your own gasket material. Ideas??

Thanks!
-Jonny


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post #2 of 14 Old 07-17-2009, 01:50 PM
 
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Cut your own gasket material will burn right up.. How bad is it?

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post #3 of 14 Old 07-17-2009, 02:21 PM Thread Starter
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Cut your own gasket material will burn right up.. How bad is it?
Bad enough most guys with this hot side just weld the two faces together, but I think I may be able to pound it a little to get it closer to flat in a couple areas and use a grinder without the sheild flat on top of it to get a nice circumfrance level surface on both faces...not sure, but worth 15min of investigation if it means it comes apart for servising easier!

-Jonny

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post #4 of 14 Old 07-17-2009, 03:17 PM
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The problem is the V band clamps are designed with a taper to them. The tighter you make the clamp the closer the flanges come. Depending on how much you grind off might make a difference if the flanges will come together tightly.
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post #5 of 14 Old 07-17-2009, 03:48 PM Thread Starter
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I thought about that...might also make enough room for some sort of a metal gasket, but if I don't grind, it's not going to seal anyway.

-Jonny

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post #6 of 14 Old 07-17-2009, 05:29 PM
 
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Worse comes to worse if it doesn't seal youll have just to cut the old flanges off and weld new ones on.
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post #7 of 14 Old 07-17-2009, 05:55 PM
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Worse comes to worse if it doesn't seal youll have just to cut the old flanges off and weld new ones on.
X2

That is what i was going to recommended. I actually had the same problem, and that is what i had to end up doing.
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post #8 of 14 Old 07-18-2009, 06:11 AM
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just take some 100 grit sand paper, stick it to a flat surface... then run the flat portion of the flange in a figure 8 pattern until it's smoothed out. it's typical for them to warp a little when welding.

i use a marker and color in the flange surface so i can tell how flat it gets all across

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post #9 of 14 Old 07-18-2009, 07:13 AM Thread Starter
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just take some 100 grit sand paper, stick it to a flat surface... then run the flat portion of the flange in a figure 8 pattern until it's smoothed out. it's typical for them to warp a little when welding.

i use a marker and color in the flange surface so i can tell how flat it gets all across
That's a good idea...I'll give that a shot, thanks!

-Jonny

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post #10 of 14 Old 07-18-2009, 08:42 PM
 
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Mine were leaking just enough to put some soot around the clamps. The guys on turbomustangs told me to put a little high temp rtv around the flange. Did it. Worked like a charm.

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post #11 of 14 Old 07-21-2009, 07:51 AM Thread Starter
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Mine were leaking just enough to put some soot around the clamps. The guys on turbomustangs told me to put a little high temp rtv around the flange. Did it. Worked like a charm.
You put it on the mating surface? Did you let it set up before tightening it all the way?

-Jonny

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post #12 of 14 Old 07-23-2009, 06:51 PM
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touch them up with a belt sander. then use copper rtv on the flanges and tighten down the clamp.

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post #13 of 14 Old 07-25-2009, 09:12 AM
 
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You put it on the mating surface? Did you let it set up before tightening it all the way?

-Jonny
sorry for the late reply but no, i just put some on my finger and ran it around both flanges. i put it together right after. car may have sat a couple hours before i ran it though.
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post #14 of 14 Old 07-25-2009, 10:04 AM
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I put all my sealing areas together with copper RTV and have no problems

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