exhaust size for m52 conversion

Moderator: martauto

RichIS
E30 Zone Regular
E30 Zone Regular
Posts: 397
Joined: Sun May 07, 2006 11:00 pm
Location: gloucestershire

Post Thu Sep 30, 2010 1:51 pm

right guys and girls finally got my m52'd IS on the road currently running the std systems and have found a second hand system for sale for the right price its twin 45mm with 2 boxes
is this going to be big enough bore to let the engine breath properly ?

cheers
Injections nice....but I'd rather be blown ;)
Top
E30BeemerLad
Married to the E30 Zone
Married to the E30 Zone
Posts: 16806
Joined: Mon Mar 28, 2005 11:00 pm
Location: Norfolk

Post Thu Sep 30, 2010 2:09 pm

45mm will be alright, I think the standard M52 system is 48mm.

I'm running an M3 (E30) scorpion system which is twin 50mm pipes.
Top
DanThe
E30 Zone Team Member
E30 Zone Team Member
Posts: 28649
Joined: Sat Sep 10, 2005 11:00 pm
Location: Staffs

Post Thu Sep 30, 2010 6:29 pm

I use an E30 325i Scorpion system and have had no problem getting decent dyno figures or 1/4 mile times
Top
RichIS
E30 Zone Regular
E30 Zone Regular
Posts: 397
Joined: Sun May 07, 2006 11:00 pm
Location: gloucestershire

Post Thu Sep 30, 2010 7:47 pm

wats the bore of a 325 system ?
Injections nice....but I'd rather be blown ;)
Top
StuBeeDoo
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6756
Joined: Sat Feb 05, 2005 11:00 pm
Location: Up My Own Arse

Post Thu Sep 30, 2010 8:02 pm

RichIS wrote:wats the bore of a 325 system ?
45mm
This is why I no longer drive an E30......

Image
Top
RichIS
E30 Zone Regular
E30 Zone Regular
Posts: 397
Joined: Sun May 07, 2006 11:00 pm
Location: gloucestershire

Post Fri Oct 01, 2010 1:37 am

ok cheers has any one got these manifolds and modded them for e30 fittment ? thinking start with the manifolds first and work backwards http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 3D1&_rdc=1
Injections nice....but I'd rather be blown ;)
Top
Rallyprep_UK
formerly Driftnething
Posts: 832
Joined: Thu May 08, 2008 11:00 pm
Location: Cornwall

Post Sun Oct 03, 2010 2:08 pm

Hmmm never seen that manifold before, looks like a cross between the m52 and s52 and is much easier to rework that the s52 I can imagine !

Price is right too :)

Will
Racing is living, everything else is just waiting...

http://www.rallyprep.co.uk
Top
nickso
E30 Zone Addict
E30 Zone Addict
Posts: 4396
Joined: Sat Jul 23, 2005 11:00 pm
Location: Go do that voodoo that you do so welllllllll!!

Post Sun Oct 03, 2010 3:45 pm

i was going to say they looked cheap but then i noticed who was selling them. :P

buy a set and tell us if they fit. i could be tempted for that kind of money. you will still probably have to chop the flanges off the bottom.
Image

'88 e30 328i M52 track bint.
Top
RichIS
E30 Zone Regular
E30 Zone Regular
Posts: 397
Joined: Sun May 07, 2006 11:00 pm
Location: gloucestershire

Post Sun Oct 03, 2010 11:41 pm

chopping the flanges and moving them thats not the problem its the actual manifold bends id be worried about chopping
Injections nice....but I'd rather be blown ;)
Top

Return to “M50 / M52 Engines”