Check this out...how does this happen?! This is on a boosted 3rd gen prelude.

Straight t3, walbro, dsm injectors, tial wg, FMIC, 2.5 inch dp/exhaust, tuned on crome 6psi

Thoughts?

TIA
Rick

 

thats a shitty gasket to begin with.

get the OEM 3-layer stainless metal gasket or mr. gasket has a nice copper exhaust manifold gasket that works really well especially if your manifold flange is warped.

 

ummm... it was a OEM gasket to begin with

 

I agree. That is a shitty gasket. Time to upgrade!

Gabriel

 

its oem...i've never considered Honda Original Parts as ****...It was brand new when i put it in

 

thats not an oem honda gasket oem is 3 layer metal

 

hmmm.......it doesn't look like a honda gasket.........but i never had a 3'rd gen lude apart before so i guess it could be.

just get a new gasket.....make sure the manifold flange is clean. and make sure its not to badly warped. and try torquing the nuts down evenly....

I'm using a copper exhaust manifold gasket made by mr. gasket that works great.....had it for 4-5 years and reused it over and over again. it never leaks.

 

i replaced it with a new one from honda, we'll see what happens i guess...

i don't get how it tore the holes for the studs, and moved to block the port like it did...see how its all black? It moved under the friking manifold...a leak i could see but the whole thing moving like it did?

Rick

 

sounds like maybe the nuts may have worked themselves loose over time causing the gastet to move/distroy itself.....

try some lockwashers if you can fit them?

 

could the head flange be alil bit warped?

 

i think the flange might be warped a touch

 

warped flange/ cheap gasket. get a copper or oem gasket as said b4.

COPPER

 

the older preludes use the shitty gaskets they dont use the metal ones..that goes for the head gasket also...but i havent had any problems..

 

Maybe the bolts are stripped or studs. When you tightened down the manifold maybe you tightened them to tight.

 

Have a link for that gasket?

 

i dont know about others
but that picture right there shows the gasket inproperly installed
how the **** are the ports marked on the gasket with black stuff when is properly installed

u can even tell, they made new holes to make it fit
i bet ya thats a B series or D series gasket

go home boy and buy a real gasket and the right onw from the engine
stop posting stuff like this and take our time when it was not done right to begin with

 

ha

 

The gasket was installed wrong. It only fits one way. Should be very obvious when installing it.

 

that was either incorrectly installed, or the gasket was just a gasket incorrectly makked and the honda dealer didn;t catch it when they gave it to you.
either way, before you install the manifold back, check the holes and ensure the gasket isn;t covering the th hols up. if it covers that much still, something is wrong with the gasket, or your getting parts for the wrong motor.

 

installed wrong. and you should be using a metal gasket anyways.....mr gasket

 

thats is for sure not a stock gasket, did u use the locking bolts? if they came loose, that would definatly mess it up. Happened to my wastegate gasket, looked the exact same way.

 

Lol. Ghettofabulous Owns ya

 

ok dudes-

i did not use a gasket for another motor
i did not make new holes to make it fit
it is an OEM BRAND NEW GASKET
it fit perfectly when i put it on. the pressure or somthing made it move and tear like that.
I'd run a copper one if they were availible for the b20A (A! not b or z) this is a 90 PRELUDE!
I'm not a hack trying to half *** here

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">
i dont know about others
but that picture right there shows the gasket inproperly installed
</TD></TR></TABLE>

Im glad someone finally picked up on that one.

 

would a metal one from an ls fit?