wes wagon

Hey all- I'm looking for any info, ideally a picture, on how the stock 1st gen CR-V "A Pipe" (the lower half of the manifold/header) clears the transfer case/driveshaft on the AWD V.
A buddy of mine and I were just under a Civic wagon looking at how to design an exhaust that will clear the shaft (it has a B20B) if it was converted to AWD in the future. Basically, the A-pipe it has on it now is stock but off another B-series car (junkyard find) so it angles right into the space that would be occupied by the driveshaft, if that makes any sense.
Where does the CR-V one angle/diverge to clear the transfer case? The pics in the CR-V shop manual just don't show enough detail. If you have any insight on this (or a photo!) cool, if not it's not the end of the world.
It would be nice to be able to use a freer flowing header of some kind (anyone even make one for the AWD CRV?) rather than the stock cast mani, but if that's what it takes then that's what it takes.
Thanks!

qwrty

idk if this would help, this is the obx headers... i think it was a comptech copy....






heres our plan on the bisimoto copy headers....its the easiest exhaust to modify in our stock!

the half one was from an oem(US) the full one was from japan-it came w/ the engine we bought from a depot
and the bisimoto copy...

wes wagon

Thanks, qwrty. It does help, now that I can see the little jog that the CR-V downpipe takes to move over to the driver side for clearance. I also found some of your comments on CR-V OC and another on H-T etc. after searching for the OBX. Sounds like those ones have some fitment issues? I'll keep all this info for reference... who knows, I have a handful of banged up Honda downpipes and might be able to do some modifications or whatever as I think you suggested instead of using the OBX.

wes wagon

So that one in the middle is a bisimoto piece? I'm not sure I can see how you're modifying/copying it though. It seems like the USDM downpipes have a lot more shrouding/skid-plate kinda metal on them. I've noticed that on some that I have here. The one I have on my motor right now - which must be some other B-series (not a CR-V) - doesn't have much of that, it looks more like the full japan one you have there.

*EDIT* Maybe on the US pipes the extra metal is to keep more heat in, to get more heat to the cat. whenever there's a difference between US and Japan parts I always assume it's emissions related.

qwrty

there still a bit of work around the shop..we could only do this mod after work hours, also those
bisi copies sell fast, i was holding one for our proj. but had 2 let go twice since a customer really
wants it badly... we looked into it and it could be possible to modify it, i need to sacrifice a bit of $$$
just to see if this thing would work, same thing as w/ my old R&D in most of my mods, good thing
i get good help from my mechanic/builder/tuner...

wes wagon

Prepare the sacrificial header!