jon_mr2

okay, i know everyone who opens this thread is gona say OMG this is like the millionth and one exhaust question thread made. and/or use the ******* search feature. well, okay, ive tried searching and searching and ill list what ive found after i post this question.

oh yeah, this is for a 89 240sx with a 95 ka24de

Question:
What size of test pipe/resonator should i use to connect a OBX header (ID: 2.25") to an HKS hi power (ID:3")? Should i use a 2.5" pipe or 3"? i just dont really know if the flanges are the same and will bolt up correctly.

Ive found people saying they used 2.25" to 2.5" using the smaller gasket and/or people using 2.5" to 3", but ive never found if the flanges are all the same or what not. im assuming the 2.5" pipe would work, but would a 2.25" to a 3" work? i guess all im asking is if the flanges are all the same, that would probably answer all my questions. i feel really dumb asking this... just dont want to order the wrong part.

Jon

90KAcoupe

all the flanges should be the same...

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the sig rules are gay!!

CoasTek240

itll fit.

the flanges may be slightly different sizes... but itll still fit.
this is an issue i had thought about and dealt with in the past.

apex

dont feel dumb just search its been coverd b4

yea they are all the same size the only diff. is the opening
i got a sohc with 2.25 header,3" test pipe and 3" catback
b4 i had 2.25 header stock cat and 3' catback all fit

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Red Rocket

jon_mr2

hey guys!

thanks for all your replys. guess ill be on my way to order the parts up!

Jon