EA82T exhaust header gasket keeps blowing

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timmo
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EA82T exhaust header gasket keeps blowing

Post by timmo » Tue Sep 15, 2009 9:16 am

As title says I'm sick of putting a new gasket on the passenger side every few months. Anything else I could be doing to make it last longer? I'm using genuine gaskets. Obvious this would be ideal....

Image

But I dont really want to spend the money on an aftermarket header
L series wagon EA82T (RIP)
'92 Liberty RS Turbo
GU Patrol Ute
Honda XR400R

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justincase41
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Post by justincase41 » Tue Sep 15, 2009 9:30 am

Check that the flange on the header is nice and flat/flush. Another reason that they continually blow is the exhaust studs are loosining up due to the holes in head being stripped or worn. You can go up to 7/16x16. no drilling involved just a lil tapping. You could also run a helecoil into each one and then refit the studs. M10x1.25 helecoil
Current :
1992 Brumby (Future EJ20 Conversion)
2007 Toyota Prado 120
2012 Great Wall V200 (daily driver)
1997 Subaru Outback
1999 Toyota Surf (Beach Basher)
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discopotato03
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Post by discopotato03 » Tue Sep 15, 2009 10:15 am

Are you using the genuine turbo gasket pt no 44022GA320 , the NA one is probably different .

Cheers A .

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steptoe
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Post by steptoe » Tue Sep 15, 2009 1:29 pm

You could search in here for this discusion. Suparoo comes to mind. The factory turbo gaskets are different. Sealant is good. You are not doing it someone elses way and snipping bits off to sneak it in while engine still in car? Pull whole thing off motor, slide on studs, seal and refit?

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tony
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Post by tony » Tue Sep 15, 2009 4:26 pm

if the gasket has been blown or leaking for a while it erodes the surface of the metal and new gaskets only work temporarily. check both surfaces are flat. sealant won't won't work all that well if it is bad as the pressure will blow the sealant out. can work for a while tho.
Espicially bad if aluminium as is softer.

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Gannon
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Post by Gannon » Tue Sep 15, 2009 4:38 pm

steptoe wrote:Suparoo comes to mind.
Looks like you are singling me out :(
steptoe wrote:You are not doing it someone elses way and snipping bits off to sneak it in while engine still in car?
Whats wrong with doing it like that, i did it a dozen times and worked every time ;)
There are 2 types of gasket, there are pics in the 2nd link below. But as Jon said, make sure the mating surfaces of the flanges are flat


Here are 2 of the latest threads on EA82 exhaust flanges

would anyone be interested? EA82

Does anybody else have problems with EA82 exhaust manifold gaskets?
Current rides: 2016 Mitsubishi Triton GLS & 2004 Forester X
Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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steptoe
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Post by steptoe » Tue Sep 15, 2009 7:46 pm

Oh, might be WHY you needed to do it a dozen times (says he in a little voice, who mixed up turn lights & reverse lights)

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Gannon
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Post by Gannon » Tue Sep 15, 2009 7:59 pm

steptoe wrote:Oh, might be WHY you needed to do it a dozen times (says he in a little voice, who mixed up turn lights & reverse lights)
A little voice kept saying that in the back of my mind, but i figured i would much rather replace the gaskets 6 times a year, than have to remove the downpipe again
Current rides: 2016 Mitsubishi Triton GLS & 2004 Forester X
Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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