[Express]

does anyone know the entire diameter of the exhaust pipe on an N52 before the muffler?


thanks!!

[Gavin@MMW]

Its 2.5" give or take a MM

[Express]

Originally Posted by Craven 328

Its 2.5" give or take a MM

im talking about the piping.. not the tips. there is no way in hell that pipe is 2.5. i think its 4" but i need to make sure.

[AoS810]

Actually, Craven is correct. The pipes (Y-Pipe) BEFORE the resonator on our 325/328/330's are 2.25", the piping AFTER the resonator is 2.5" all the way up to the muffler, the tips coming out of the muffler are 2.25". I am positive.

[Express]

Originally Posted by AoS810

Actually, Craven is correct. The pipes (Y-Pipe) BEFORE the resonator on our 325/328/330's are 2.25", the piping AFTER the resonator is 2.5" all the way up to the muffler, the tips coming out of the muffler are 2.25". I am positive.

that is 100% false. ill just wait 2 weeks and measure it myself when i get home. thanks anyways.

[mike-y]

LOL dude, that pipe is definitely NOT 4".

[Express]

well its not smaller than the piping on the bmw PE. i thought i could use the clamp that came with it on my OEM exhaust but i cant. i need to clamp my OEM exhaust back on and its not a 2.5" clamp. i can tell you that much.

[FrankiE90]

Originally Posted by express705

well its not smaller than the piping on the bmw PE. i thought i could use the clamp that came with it on my OEM exhaust but i cant. i need to clamp my OEM exhaust back on and its not a 2.5" clamp. i can tell you that much.

it didn't work?
weird.
i used those same clamps from my old BMW PE and used
them on the OEM exhaust.
did it not fit at all?

is this the clamp from the PE.



also here's a link to help out.
http://www.autopartsnetwork.com/sear..._model%3A328i_

[Express]

the PE has an indentation for the clamp. the OEM exhaust does not. so i don't know what to do...

[FrankiE90]

Originally Posted by express705

the PE has an indentation for the clamp. the OEM exhaust does not. so i don't know what to do...

try ur best to fit it, should slide on. if not and that indentation is
stop'n you...
it maybe easier/cheaper to go to the muffler shop and have it weld'd on.

Long Tran got that clamp on my OEM exhaust no prob.
did u try to spread the clamp a bit to get a bigger opening?

again if ur stuck, head to the muffler shop and work out
a deal - should be straight forward for them.
good luck, let us know what happens.

[5erman]

ya maybe a 1000hp engine needs a 4inch exhaust. Yours is 2.5 inches.

Oddly enough which I find interesting on the 530 n52 the exhaust pipe is 2.75 inches.

Find it interesting why they chose to make it different and yet the outputs of the engine rated the sae--not sure why they did that.

What a joker though--what planet are you living on you think your stock exhaust is 4 inches--ok idioit

[Express]

Originally Posted by 5erman

ya maybe a 1000hp engine needs a 4inch exhaust. Yours is 2.5 inches.

Oddly enough which I find interesting on the 530 n52 the exhaust pipe is 2.75 inches.

Find it interesting why they chose to make it different and yet the outputs of the engine rated the sae--not sure why they did that.

What a joker though--what planet are you living on you think your stock exhaust is 4 inches--ok idioit

eat shit asshole

[Express]

Originally Posted by FrankiE90

try ur best to fit it, should slide on. if not and that indentation is
stop'n you...
it maybe easier/cheaper to go to the muffler shop and have it weld'd on.

Long Tran got that clamp on my OEM exhaust no prob.
did u try to spread the clamp a bit to get a bigger opening?

again if ur stuck, head to the muffler shop and work out
a deal - should be straight forward for them.
good luck, let us know what happens.

i could do that but im a DIY person.. i measured the pipe and it measured over 3. maybe i had a few brews. ill have to check it again, but there is NO WAY that clamp is fitting without leaking.

[sexymexy]

Express705 ...dude!!! 4" is big pipe!!! Go t home depot and you'll see how big is a 4". Any way good luck.

[FrankiE90]

Originally Posted by express705

eat shit asshole

cmon' now - name call'n is not going help you.
these guys are right - it's not a 4" mid pipe - guarantee -
end of story on that.

look here's the REAL OEM page.
before the res it's a 65mm clamp after it a 55mm clamp.
case solved.
someone else can convert the metric to inch.

link
http://www.realoem.com/bmw/showparts...11&hg=18&fg=20




number 7 - 65mm -part number 18307536426
number 3 - 55mm -part number 18307560778
take picts of ur DIY and
have another a beer.

[Express]

thats impossible though. if thats the case then why wont my clamp from the PE fit?

[3002 tii]

Originally Posted by express705

thats impossible though. if thats the case then why wont my clamp from the PE fit?

no clue but telling someone to eat sh*t isn't going to get you anywhere. how tight is the fit? maybe some multipurpose spray and hammer would do the trick?

[Express]

Originally Posted by Dubbedown

no clue but telling someone to eat sh*t isn't going to get you anywhere. how tight is the fit? maybe some multipurpose spray and hammer would do the trick?

i don't need to be spoken down upon for this.

its reallllll tight. like an underage girl. ive tried all kinds of lube to no success.

[mike-y]

well there are two different clamps, a 55mm and a 65mm, maybe you have the wrong one?

btw, 55mm = ~2.2 inches

and 65mm = ~2.56 inches

[Gavin@MMW]

Originally Posted by mike-y

well there are two different clamps, a 55mm and a 65mm, maybe you have the wrong one?

btw, 55mm = ~2.2 inches

and 65mm = ~2.56 inches

The 2.2 is for the midpipe connection

2.5 is for the muffler to res delete connection

[cdmst6]

man this got ugly too quick

[Express]

im 100% sure i have the 65mm clamp.. should i try a 3" clamp?