Top mounts

General E30 related discussions -
Please put technical questions in E30 Tech Help forum below

Moderator: martauto

User avatar
guss
E30 Zone Regular
E30 Zone Regular
Posts: 390
Joined: Sun Nov 21, 2010 11:00 pm
Location: Cheshire

Post Tue Jan 22, 2013 7:40 pm

Would it be ok to fit m3 rear top mounts ,and to the front of a 325 cab. I'm changing to blistien b4s with mtec springs and 15" bbs wheels.
Topblag
Old Skooler
Old Skooler
Posts: 7095
Joined: Wed Jul 30, 2008 11:00 pm
Location: Fife - You got a problem with that ?

Post Tue Jan 22, 2013 7:43 pm

I believe E46 M3 cabby top mounts are the best on offer.
1990 325i Cab auto in Alpine White II
1988 Alpina C2.5 moredoor in Black, 71k
1990 325ix, moredoor auto in Laser Blue. 51k
1984 Hartge H35 in Black
2004 996 C4S in Silver 43k manual
2006 Audi S6 V10 in Black 58k
bss325i
E30 Zone Team Member
E30 Zone Team Member
Posts: 24532
Joined: Sat Jan 20, 2007 11:00 pm
Location: London/Surrey

Post Tue Jan 22, 2013 7:49 pm

guss wrote:Would it be ok to fit m3 rear top mounts ,and to the front of a 325 cab. I'm changing to blistien b4s with mtec springs and 15" bbs wheels.
All E30 front top mounts are the same from 316 to M3.

The only variation in front top mounts are camber correction ones.

As Topblag says, E46 cabrio rear top mounts are the ones to go for.
http://www.bmrperformance.co.uk

BMW and MINI specialist - Gatwick
User avatar
guss
E30 Zone Regular
E30 Zone Regular
Posts: 390
Joined: Sun Nov 21, 2010 11:00 pm
Location: Cheshire

Post Tue Jan 22, 2013 8:06 pm

Ok thanks,what reason would I fit m3 to the front?i understand the wheels would sit out slightly wider is this better performance or just cosmetic reason.
ross_jsy
Married to the E30 Zone
Married to the E30 Zone
Posts: 7307
Joined: Sun Jul 12, 2009 11:00 pm
Location: Jersey, C.I.

Post Tue Jan 22, 2013 8:10 pm

They are no different to any other e30 top mount as Barry has stated.
User avatar
harry_p
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 5313
Joined: Thu Oct 12, 2006 11:00 pm
Location: norfolk

Post Tue Jan 22, 2013 8:14 pm

i don't quite know what you're trying to do.

e30 m3 front topmounts are exactly the same as any other e30 front topmounts. e30 m3 rear topmounts are exactly the same as any other e30 rear topmount.

e46 m3 cab rear topmounts are a decent upgrade for any e30 rear topmount as theyre stronger and will last longer.
cheers,

harry
bss325i
E30 Zone Team Member
E30 Zone Team Member
Posts: 24532
Joined: Sat Jan 20, 2007 11:00 pm
Location: London/Surrey

Post Tue Jan 22, 2013 8:21 pm

You can get camber correction ones that give +/- 30min (half a degree) camber over standard ones.

If set to the negative camber position they will give slightly better turn in and grip when cornering.

Part number 31331139484 but they are more than twice the price of standard ones.
http://www.bmrperformance.co.uk

BMW and MINI specialist - Gatwick
User avatar
guss
E30 Zone Regular
E30 Zone Regular
Posts: 390
Joined: Sun Nov 21, 2010 11:00 pm
Location: Cheshire

Post Tue Jan 22, 2013 9:08 pm

Would that be a noticeable difference in your opinion or mainly for track type driving ,I'm thinking not.
User avatar
BenHar
E30 Zone Addict
E30 Zone Addict
Posts: 3089
Joined: Sun Jul 11, 2010 11:00 pm
Location: Reigate, Surrey

Post Tue Jan 22, 2013 10:23 pm

You may be thinking about M3 lollypop bushes (at the back of the front wishbone). These alter the geometry a bit and a lot of people say they are a worthwhile upgrade.

Ben
bss325i
E30 Zone Team Member
E30 Zone Team Member
Posts: 24532
Joined: Sat Jan 20, 2007 11:00 pm
Location: London/Surrey

Post Tue Jan 22, 2013 10:24 pm

guss wrote:Would that be a noticeable difference in your opinion or mainly for track type driving ,I'm thinking not.
Not on a cabrio thats not going to be used for fast road/track use.
http://www.bmrperformance.co.uk

BMW and MINI specialist - Gatwick
bss325i
E30 Zone Team Member
E30 Zone Team Member
Posts: 24532
Joined: Sat Jan 20, 2007 11:00 pm
Location: London/Surrey

Post Tue Jan 22, 2013 10:28 pm

BenHar wrote:You may be thinking about M3 lollypop bushes (at the back of the front wishbone). These alter the geometry a bit and a lot of people say they are a worthwhile upgrade.

Ben
Yes, these eccentric wishbone bushes are a worthwhile upgrade on any E30 for two reasons.

Firstly, they are a virtually solid bush so will flex less unlike the standard one which has big viods in it.

Secondly, they give increased castor which improves turn in and steering feel.
http://www.bmrperformance.co.uk

BMW and MINI specialist - Gatwick
polsta
Married to the E30 Zone
Married to the E30 Zone
Posts: 10322
Joined: Fri Oct 09, 2009 11:00 pm
Location: portsmouth

Post Tue Jan 22, 2013 10:35 pm

how much are those 46 cabby rears ?

also, what would you replace the front with 46 cabby aswell ?
User avatar
harry_p
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 5313
Joined: Thu Oct 12, 2006 11:00 pm
Location: norfolk

Post Tue Jan 22, 2013 10:40 pm

no. e46 front mounts will not fit an e30.

normal e30 ones (of a decent make) are fine, and not prone to early failure unlike standard e30 rear topmounts which are quite soft and can start to push the rubber through the mount causing the cup washers to rub against the metal housing and knock and squeak.
cheers,

harry
polsta
Married to the E30 Zone
Married to the E30 Zone
Posts: 10322
Joined: Fri Oct 09, 2009 11:00 pm
Location: portsmouth

Post Tue Jan 22, 2013 10:49 pm

ok i see, well i need to change my springs over so im thinking new top mounts and a few other bits for good measure, how much are e30 front top mounts for front from bmw ? and a lemfodder or whatever people use ? and the cabby ones, they dont cost a lot do they ?