fknsmshn

iTrader: (1)

http://catalog.remflex.com/Turbo_Gaskets_p/rf18-006.htm

Guarantee that mother ****** will seal it up. Go ahead, ask me how I know that.

Also, as it was mentioned earlier. Bolting the thing up, torquing and heat cycling will pull that flange flat.

Machining a completely fabbed crossover is a bitch. Dont waste the money on it.

Johnv

Mill too much off, and you may find your downpipe won't mate up properly to the turbo anymore.

Chicago TDP

iTrader: (3)

If it is bad enough, the best way to make anything flat is to have it ground.
If you can find a tooling shop or tool and die shop, they should be able to rig it up on a surface grinder.

98Z28CobraKiller

iTrader: (17)

That thing will be fine in a couple of heat cycles. I wouldn't sweat it at all. If it were bent the other way, then I'd be worried about it.

Eagle02

iTrader: (20)

You think so?

So just bolt it down tight as ****, rip it around a bit, come back and crank it down again, and rinse repeat until it seals?

MrDude_1

iTrader: (4)

if you have some 1/2" plate, id try bolting it to that first and using a torch.

but like I said earlier, if it was me, i would mill it flat.

really i think everyone here has different opinions based on different experiences.. really any one of these options could work for you.
i suppose just bolting it on for now and calling it good would work if you dont mind taking it off later if theres an issue.

fknsmshn

iTrader: (1)

I wouldnt crank it down too hard. You dont need to flatten it while its cold. Just torque it down like normal. And retorque it often.

HydroStream6

iTrader: (16)

A surface grinder on that would take FOREVER and would be a PITA to rig up.

OP, you're being OCD about this, just straighten it the best you can with your own means and bolt it up and retighten a few times.. It'll be fine.

black98ws6ta

iTrader: (77)

Silicone gasket maker, put it through a couple heat cycles, try to tighten bolts more. If it leaks do something else to fix, like the torch idea.

Eagle02

iTrader: (20)

I took it and got it milled. Seals great. Just drove it around the block, pulls awesomely!

I wouldn't suggest silicon to seal this at all, just sayin. We are talking >20 psi, not some 7psi deal.

black98ws6ta

iTrader: (77)

I use silicone on stuff alot more serious then what your doing, just sayin.

strokergsr

Belt sanding flanges on manifolds is common practice with many fabricators that produce turbo manifolds. Things warp

67RSCamaroVette

iTrader: (63)

+1. With a good, properly sized belt sander, you can get it completely flat, as long as you don't rock it. I've done it many times on warped parts.

kmracer

iTrader: (1)

i agree, its also quicker and easier than milling...

forgedlt4

im glad some people who actually know what they are talking about are posting about using a belt sander.

91blowthru

I used an old empty turbine housing bolted to my flange and heated it with a torch and repeatedly tightened it... it seems to have worked well.

Fireball

iTrader: (21)

I've always ran copper RTV on mine

TPIIROC

iTrader: (1)

Umm that is how you get header flanges flat.

FastKat

iTrader: (10)

I've used a table-mounted belt sander to clean up V-band flanges and had no problems. Those are probably more sensitive than square bolt-up flanges.

pwrtrip75

iTrader: (8)

It looks warped bad... nothing will straighten it unless you sand/mill it flat again. They move a lot when welded that is why I made a block of steel to bolt it to while welding it. If you have another one it might just be easier to cut it off and reweld a new one on. Heating it up and trying to bend it back is pointless, the way it actually warped it kind of rolled out... and then cooled that way, you'd have to twist the welded areas back...impossible.
Heres what I use... I recomend it.. or something similar.