E30. M60. California Smog Legal / BAR'd.

[robiniscool]

post pictures of your "modified" exhaust i need ideas!

[36brua]

post pictures of your "modified" exhaust i need ideas!

unfortunately my pics of exhaust build were crap.
basically I didn't attempt top use the modified single outlet manifolds (X5? see garagistic site for ref.) . so Ive no idea if they would pass BAR.
I wanted a 'stk' configuration 4>2 /2>1
at heads : cut off flange end of stk header leaving as much 2bl wall header as possible to fab onto. used SS pipe
reused stk 2 bolt flanges at ends, 'headers' end next to blk/trans joint. Stacked, not side by side. pointing down at 45*+- . this is tight but workable.
Reused the stk 2>1 connector/pipe w/ reshaped pipe to end of headers.
Then 21/2" back to Calif legal 540 walker cats w/ O2 sensors. dual 21/2" cat back to muffler.
The BAR ref commented the headers had been modified but were representative/ close enough to what his diagrams showed.
Your results may vary.
I probably paid more for the exhaust system then all the rest of the swap.

[jpod999]

Cooling:
Mishimoto M Z3 radiator
Spal pusher fan
Rear waterpipe between cyl heads from M6211531702201 no welding required

Did you just drill and tap a hole for the coolant sensors in the M62 pipe?

[36brua]

Did you just drill and tap a hole for the coolant sensors in the M62 pipe?

No, the one we had already have the holes in it, they were just plugged.


http://www.realoem.com/bmw/enUS/show...36#11531702201

remove 8 and 9

And the diagram on RealOEM is the older style

[jpod999]

No, the one we had already have the holes in it, they were just plugged.


http://www.realoem.com/bmw/enUS/show...36#11531702201

remove 8 and 9

And the diagram on RealOEM is the older style

Nice! I kinda figured that was possible but haven't had the waterpipe in front of me to check. You just made my swap easier, thanks!

[36brua]

Nice! I kinda figured that was possible but haven't had the waterpipe in front of me to check. You just made my swap easier, thanks!

Isn't that what these forums are all about making stuff easier... OO no never mind this is r3v... hahaha

[jpod999]

Isn't that what these forums are all about making stuff easier... OO no never mind this is r3v... hahaha

hahahaha yup!

[P Arkus]

Hahaha and sig'd

[2mAn]

Any pics of what you had to do with the headers? Ive thought this would be something that was possible. Congrats on doing it the right way

[36brua]

Any pics of what you had to do with the headers? Ive thought this would be something that was possible. Congrats on doing it the right way

still no pictures, I am guessing you read the post above I wrote out a while back about how I went about the headers.

I'll be swapping the motor for an "upgraded" m60 in the next month or two... hopefully can take some pictures when the motor is out.

[WYZEUP]

Have you got any pics of how you ran your coolant pipes using that rear accumulator pipe as i may go that way to make my swap easier and give me more clearance

[ckarsonkidd]

This is great to see and all the details for it kept asking myself for longest if this could be legal

[wspellmann]

Any news on the exhaust photos?

[ogslick]

headers

So just to confirm. The only thing you left stock on your exhaust was the flanges?

The referee was ok with using all new exhaust piping?
Did you need to follow any guidelines like runner length and size, collector and cat location etc..?
Does it look close to the stock header design?

What can make the headers fail inspection?

Thanks for the info I'm in San Jose doing a s62 swap, trying to figure if i should custom fabricate or cut/bend/rotate my stock headers.

[nick526]

I'm working on the S62 swap as well. Pretty far away from getting it BAR'd at the moment but would definitely love to know what if any leeway the ref will give with the exhaust manifolds.