Baz

I recently removed my FM turbo and lower down pipe from my car, I noticed that the flange weld on the lower down pipe had split (the 4 bold flange that attaches to the cast upper down pipe).

I have had it welded but when input a straight edge across the flange it is not perfectly flat, I assume it was before I had it welded. What is my best option:

Try to grind/ file the flange flat
Try to find a gasket to fit (I'm in the UK and can't seem to find one)
Buy a new lower down pipe?

Any advice would be welcome.....

Barry

thirdgen

iTrader: (26)

Grind it flat.

Braineack

iTrader: (62)

use Copper RTV and make your own gasket...after you've tried to beltsand the flange flat.

TurboTim

iTrader: (9)

bolt it together as is and see if the tick-tick exhaust leak bothers you. If so, then do what is said above.

Baz

Cheers guys, I have just had a go at draw filing it in different directions and it is taking away the hig spot in the middle so I think that will work.

I have some MAG RTV red (650 degrees F) will that suffice?

Thanks again for the replies.....

Barry

Braineack

iTrader: (62)

yeah, copper ultra is rated at 700°F; that's what i use.

jmann

That pipe is going to get WAY hotter then 700*, don't know of anything that well last in that spot. Needs to mate up tight flange to flange.

Braineack

iTrader: (62)

I'm using that stuff on my cat. it's fine bro. dont knock it till youve tried it.

triple88a

iTrader: (2)

Get some sand paper, put it on a flat surface and just grind away. It will take some time but most people dont have a big flat wheel or a surface grinder.





You get the point.

mcfandango

iTrader: (1)

Had my down pipe crack all the way through there. My replacement downpipe from FM had a slight dome; right over the little braces on the sides. Just sand it down. I mounted mine in a vise and used an orbital sander for most of it.

jmann

First off I ain't your bro, second I wasn't knocking anything. If the temp is good to 700* it ain't going to hold up at the temp that down pipe gets to bro. Copper ultra is mainly for head gaskets.

Braineack

iTrader: (62)

but it will, and does. Would I use it on the turbo, hell no. anywhere else on the exhaust, hell yes.

Baz

Just to close this thread, I tried most things to get this flat but in the end I took it to a fabricator to get it milled flat. Due to the shape of the flange it couldn't be gripped securely in the vice so he tac welded a lump of box steel to the exhaust - job done

Cost me £15 ($10 ish)



Thanks for all the advice though.

Barry