hustler

iTrader: (6)

Ok so all my studs are screwed-up, turbo flange is warped, and I discovered that my manifold is warped. Is this normal for a track car? AFR is 11.5:1 in boost, spark map has crazy advance...so am I possibly overheating this guy? I'm sending the manifold to BEGi to get all the work done and I'm adding an EGT because apparently I need to. Any thoughts on this?

Its easy to look at the gasket and notice that things are not good:

l_bader

Do you have any way to measure fuel delivery to each cylinder? I'd be worried you're running lean in one and creating a hot spot...

(Unless of course your faulty studs are creating a leak of some sort.)

- L

hustler

iTrader: (6)

I don't have any way to do that, but I put cleaned injectors in them. Also, look how black that **** is...its definitely not lean. I guess i could put EGT on each cylinder with a bunch of $22 bungs, but that's going to get expensive.

Maybe Corky will chime in. Right now I'm thinking they will recommend surfacing (duh) and cutting bigger reliefs. I don't see how I'm hitting too-high EGT's if AFR is where's its supposed to be. As for spark, I have no less than 22* at the 15psi at 7k rpm...all of my settings are reasonable.

Studs are fine in the head.

Splitime

iTrader: (24)

Now that the bugger has warped. Deck the flange and reinstall.

hustler

iTrader: (6)

is this typical? will it happen again? Do I have a problem?

Thanks

Braineack

iTrader: (62)

it looks like #1 and #4 never sealed....

JayL

iTrader: (12)

Are you sure it wasn't warped when you got it?

y8s

iTrader: (8)

once it's been heat cycled, it shouldn't re-warp. splitime's suggestion is solid.

also did you check the flange nuts or retighten them? were they loose at all?

curly

iTrader: (25)

I dunno if this helps, but my greddy manifold is a bitch to get on and off now, I'm fairly certain it's warped. I tend to run on the hot side at the track as well, so I wouldn't be surprised if that's what caused it.

hustler

iTrader: (6)

it did, considering that it spooled 500rpm later after the track running.

nah, the bolts were tight. Splittime's suggestion makes sense...before I get the checkbook out. By checkbook, I mean "check card."

kenzo42

iTrader: (6)

So is heat cycling then having to resurface the flange again common practice? Or is this an exception since it was ran hard?

neogenesis2004

iTrader: (12)

Its one of those unknown unknowns I think.

Miatamaniac92

+ new relief cuts.

Chris

y8s

iTrader: (8)

my ETD manifold pulled the flange all over the place. I never re-decked it but I did do relief cuts and re-mounted it and it's been pretty solid and not leaky since. But there is only one track event on it...

hustler

iTrader: (6)

this manifold had relief cuts...now they're touching. Look at the shape of the stud-holes. lol

curly

iTrader: (25)

Yup that's what mine did. I have all the suggested relief cuts on my greddy manifold, which is a lot more than yours by the looks of it. They're all touching now. We're kind of asking for it by separating the flange into multiple pieces.

Braineack

iTrader: (62)

my first manifold warped so bad i had to cut it off the head....

Laur3ns

That sucks. Not seen it before. This is new:


Did you use a new gasket or reuse the old one? Was it clean as new when reused? It may be that the warping came after a small exhaust leak, that heated the outside too much and caused it loosening more and warping more.

Get a new exhaust gasket for sure, and retighten several times after heat cycling. And use your Rebond...

hustler

iTrader: (6)

I used a new gasket, so I guess I'll buy another. I'm not using the threadlocker there.

UrbanSoot

iTrader: (24)

i was waiting for this to happen! too much ignition advance = more heat = warped ****.