RED HOT TURBO MANIFOLD! SAFE?

[Silvia007]

Ok, so a buddy of mine finally got his MAFS problem worked out... kinda. Anyway, we took it for a spin tonight, he ran it against mine. Did a little Auto-x on some small highway mixed with city streets. Well once we got home, he poped open his hood right away and he said, "Hey, look at my manifold!". I looked at it and I thought he painted it red. It was already pretty dark by the way, but upon further inspection, his stock turbo manifold was red hot, including this turbo exhuast housing. I popped my hood but couldn't see anything because I wrapped it pretty well with exhuast wrap. Anyone notice this also with their setup? Just wondering. I was running 9psi and he was running 11psi. Both slightly modded SR's with bolt ons.

[9240sx]

Id think something blocking the exhaust flow,check the,Turbo,Cat,Muffler.sutff like that.

[Dori Dori]

Only right after hard driving. How far away was your house from where you all were screwing around?

[Silvia007]

not that far, it's city streets but it's around a city park with little to no traffic at night. About a good 3 minute drive from my place.

[ItzGenX]

Check the ignition timing, retarded ignition could cause extreme exhaust heat.

[justmerging]

It does sound like you have really high EGT. I would get the A/F ratio checked. I know when me and my buddies drifted in japan our manifolds got red hot just as you described but all we did was just give it a proper cool down period and we never had any problems(with 1.4 bar of boost, I'm sure we were running pretty lean). Are you running stock exhaust manifolds? I'm sure that the flow characteristics are not that great for those and that may be adding to the problem.

[Silvia007]

Yep, stock manifolds, We have a wide band we can use to test it but was afraid the extreme heat might cause the o2 sensor to fry to a crisp. Oh well, a 50 dollar sensor is not as bad as a 2k engine. Anyone know a safe EGT? I think we're gonna have to pick up a EGT. Thanks for the replies guys.

[mynismo]

yea sounds like your egt's are FLYING. get an egt gauge in there. a/f gauge won't help you here.

your timing is off. reset it http://www.store.yahoo.com/pha....html

[240marcuSX]

ive got an egt w/probe and dual a pillar pod ill sell you, let me know.

[sgpnismo]

mine did the same thing, it was the timing.

[Silvia007]

MarcusX, thanks for the offer, I got one really cheap from a friend.

[240marcuSX]

[spider_slayer]

this sounds more like a timing issue to me. when my friend rebuilt his 80's corvette his timing was jsut a little off, but jsut letting it idle for about 5 min and the headers would start to glow red, the orange, and jsut get brighter....this was solved once he got the timing fixed. good luck though

[Silvia007]

Results:

Our $200 timming light sucks balls... or we suck balls because it's got so many settings we have no idea how to use it properly, it was giving us the wrong timming, a good 15 degree off. We went back to our $40 dollar timming light and it was retarded quite a bit. No wonder he wasn't able to keep up at 11psi when I was running only 9psi !