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 Post subject: Turbo Manifold
PostPosted: Fri Sep 26, 2014 5:50 am 
Second Gear
Joined: Sat Mar 06, 2010 12:06 pm
Posts: 295
Location: Yucaipa, Ca
Does anyone know how hot the exhaust manifold can get on an EJ22t? want to coat it but not sure what to use since I don't know what the max temp is.

Brian

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1992 Legacy L (AWD )(5MT)[2.5RS Trans] EJ22T Swap in Progress


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 Post subject: Re: Turbo Manifold
PostPosted: Fri Sep 26, 2014 9:19 am 
Fourth Gear
Joined: Sun Jun 10, 2007 4:35 am
Posts: 1746
Location: Arkansas
I dont think there is a spec for it, but exhaust gas temps can exceed 1300F. No idea how much transfers to the manifolds but it is possible to make them glow red, which means they at least reach 1000F under hard use. I know some manifold paints are good to 1200F. They may or may not hold up depending on how you drive. If its just a DD you may be fine, but I dont know any competitive drivers (even weekend drag racers or autoXers) who bother with manifold paint, they only car about trapping the heat with wrap or ceramic coating.

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93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!

05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.


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 Post subject: Re: Turbo Manifold
PostPosted: Fri Sep 26, 2014 1:51 pm 
Fifth Gear
Joined: Wed Nov 12, 2003 12:26 am
Posts: 2266
Location: USA: Portland, OR (Tigard, ~200ft elevation)
I have an EGT gauge installed on cylinder 3, have had it for several years now. exhaust temperatures are regularly around 1400*F and under boost can approach 1600*F.

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-Chris
91SS 4EAT stock
91SS 5MT awaiting engine rebuild and VF36...
92SS 4EAT - RIP :(
94SS 5MT4.11+rLSD 289k km: RobTune550,TD05-16g @ 18psi,FMIC,3"TBE,Forester lift


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 Post subject: Re: Turbo Manifold
PostPosted: Fri Sep 26, 2014 5:37 pm 
Site Admin
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Joined: Tue Oct 15, 2002 11:37 am
Posts: 27347
Location: Houston, Tx
Just to clarify, exhaust manifold temps will be lower than actual exhaust gas temperatures. If you can find something that withstands 1,500 - 2,000 deg F that should be more than adequate.

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Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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 Post subject: Re: Turbo Manifold
PostPosted: Wed May 13, 2015 8:33 pm 
Second Gear
Joined: Fri Jul 09, 2010 1:41 am
Posts: 353
Location: Bend, Oregon
I have a set of jdm ej20G manifolds that are ported and ceramicoated for sale in the parts shed if you want a cheap upgrade.

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 Post subject: Re: Turbo Manifold
PostPosted: Sat May 16, 2015 11:00 pm 
Site Admin
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Joined: Tue Oct 15, 2002 11:37 am
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Location: Houston, Tx
This thread was nearly 8 months old....

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Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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