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post #106 of 237 (permalink) Old 02-22-2012, 08:42 AM
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megan headers

did the search, did the research...

just got my megan headers installed mainly coz' i was throwing a P0430 CEL and since i have 195k on my car, i figured the cats were on the way to the shit.

anywho... used the gasket provided by the megan headers and purchased the donut gaskets from lexus and now i seem to have a small leak coming from the top of the connection to the stock y-pipe.

any tips/recommendations? - possibly without going with an aftermarket y-pipe etc.
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post #107 of 237 (permalink) Old 02-22-2012, 08:44 AM
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Should've used the OEM gasket if youre keeping the stock ypipe.

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Altezza||HKS||JOE-Z||Megan
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post #108 of 237 (permalink) Old 02-22-2012, 08:50 AM
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Quote:
Originally Posted by dai_ka_IS View Post
Should've used the OEM gasket if youre keeping the stock ypipe.
isn't the OEM gasket the donut ones? I had to replace them since my car had 195k on it and it pretty much crumbled coz' it was rusted and worn out etc.
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post #109 of 237 (permalink) Old 02-22-2012, 08:53 AM
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< also curious about megan header and stock y, without welding them together
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post #110 of 237 (permalink) Old 02-22-2012, 08:56 AM
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Quote:
Originally Posted by L-TunedSportDesign View Post
< also curious about megan header and stock y, without welding them together
welding is the last option...

i have a custom straight pipe welded onto my stock y-pipe already, hence i'm avoiding the aftermarket y-pipe method.
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post #111 of 237 (permalink) Old 02-22-2012, 10:21 AM
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How do u think it'd hold with the gasket amd some gasket sealant
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post #112 of 237 (permalink) Old 02-22-2012, 10:31 AM
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Two best options I've read during my research on this topic. 1: weld the two together and 2: Oem gasket with red gasket maker.

Lexus IS300 AR
Altezza||HKS||JOE-Z||Megan
1999 Honda Accord R.I.P.
2002 Honda Civic SI EP3 SOLD
2002 Audi A6 Quattro SOLD
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post #113 of 237 (permalink) Old 02-22-2012, 11:48 AM
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Quote:
Originally Posted by dai_ka_IS View Post
Should've used the OEM gasket if youre keeping the stock ypipe.
Are you saying there are no mating problems, or any other problems, using Megan headers and stock Y if I use new oem gasket?

Or do you HAVE to weld the Megan header and stock Y together if you dont want it to leak?
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post #114 of 237 (permalink) Old 02-22-2012, 12:29 PM
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Put stock gaskets on and buy copper silicone gasket sealant from your local auto parts store. Works like a charm.
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post #115 of 237 (permalink) Old 02-22-2012, 01:10 PM
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^^true story. OEM gasket and copper/red gasket make should make a decent seal. Should still check on em and flange bolts every so often(during oil changes) to make sure everything is well and dandy.

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post #116 of 237 (permalink) Old 02-22-2012, 02:42 PM
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Awesome, I've always read that you had to weld the Megan header to the oem Y-pipe. I guess I get to retain my oem Y!!!!
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post #117 of 237 (permalink) Old 02-22-2012, 03:08 PM
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Ok Preciate the advice
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post #118 of 237 (permalink) Old 02-22-2012, 05:01 PM
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Or another thing (forgot this) is get the Megan y and take it to an exhaust shop and have them cut out your cat from the stock y and weld it to the Megan y removing the resonator it came with. So now the two will bolt up nice/snug and you still have the cat on

Lexus IS300 AR
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1999 Honda Accord R.I.P.
2002 Honda Civic SI EP3 SOLD
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post #119 of 237 (permalink) Old 02-22-2012, 05:05 PM Thread Starter
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Your stock cat will take a shit with install of after mart headers over time...

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post #120 of 237 (permalink) Old 02-22-2012, 05:06 PM
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Quote:
Originally Posted by tk.is300 View Post
Ok Preciate the advice
Or you can try what I wrote in post 10 in this thread. Pretty much cutting out stock cat and welding it onto the Megan y. Get good connection and keeping the cat. Slightuy bigger piping of course.
megan headers

Lexus IS300 AR
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1999 Honda Accord R.I.P.
2002 Honda Civic SI EP3 SOLD
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