I'm getting some mixed answers here and would like to get them strait if anyone knows the answer.

Do 98 and 02 manifolds share the same mounting points and bolt patterens?

We've been building our budget kits off 02 manifolds which is suppose to flow more than the 98-01 manifolds. Be we were told the 98-01 share the same bolt patterens and flange locations. Just did some reading and off road y-pipes are made for different years. Can someone clear this up for me?

 

wow John I didnt think about this but yes 98-99 manifolds are different from 00+. You cannot use a 98-99 manifold with 00+ y pipe. On my kit you can just use the 02 design since thats what I have for manifolds anyways.

later
Gary

 

ive got a 98 so wouldnt that screw up my kit that i ordered!

 

the y pipes are different because the cats are different. but they bolt patters will bolt up to the heads... just gonna have to make it work with the exhaust on our own i would say

 

hey john I have some junk 99 manifolds here if you want them for mock up purposes.

let me know
Gary

 

and what if you dont run cats?

 

I'll pick you up on that offer You have pm

Does anyone know if the 98 is different than 00?

 

im pretty sure the kit does not use cats

 

i do know 98 and 99 are interchangable, as i borrowed my freinds Y-pipe on mine.

 

ok talked to john the budget kit uses no cats FWIW

later
Gary

 

now i just need to find some 02 mani's

 

will 01 work or they have to be 02?

 

Might as well try to get the 02 manifolds. Its not like the 01s are going to be much cheaper. Just my .02

 

John,
Dont make my kit yet, I am not sure which year my headers are, Im going to send them to you so you can make sure itll work right. Is that Ok???
Please send me your address so I can do this.
thanks
ed

 

redline you misunderstand,i mean is it the 01 and up that flow better or just the 02's?

 

00-02 are the same dimensions are each other 98-99 are different. (if my memory is correct)

2000 is its own year for exhaust parts due to still having EGR but going back to the old technology of cast manifolds, vs the 2 layer stainless ones on the 98-99 cars.

Ryan

 

Either the air connection or egr connection changed in the 2000s.

Gary

 

check your pm

 

so a set of 01's would work?

 

will 03 z06 headers work?