Tight ride height on my Euro 635csi

Jays635 · Post by **Jays635** » Mon Jul 11, 2011 11:57 pm

Okay - I finally have my ride height on my Euro 635csi the way I want it. I installed a set of M-Tech springs lower the height but I also instaledled a set of E90 front strut plates (drop hats) for additional 13mm drop and used the thinner upper pad on the strut (3mm) as opposed to the stock unit. The part numbers for the outcome are listed below:

Front M-Tech Springs: 31332225645
Spring plates (Drop hats): 3133674093
Upper Spring pad: 31331128523

Overall the distance from the center hub to the top of the fender arch is 13.75 inches just like my rear. For me this is perfect in look an function. Check out link for images

http://imgur.com/a/OSwi2

Jay

kronus · Post by **kronus** » Tue Jul 12, 2011 1:23 am

upload your photos to Imgur, copy the [ img]blah[/img] links into your post. Photos!

Jays635 · Post by **Jays635** » Tue Jul 12, 2011 1:49 am

kronus wrote:upload your photos to Imgur, copy the [ img]blah[/img] links into your post. Photos!

Thanks for the tip on image hosting. I added a link for all to see in the original post

nsxguy7 · Post by **nsxguy7** » Sat Aug 20, 2011 5:04 am

will the e90 hats work with the stock e24 mounting plates?

Chris Wright · Post by **Chris Wright** » Sat Aug 20, 2011 4:11 pm

nsxguy7 wrote:will the e90 hats work with the stock e24 mounting plates?

I'm curious about these parts also, the number: 31332225645 , doesn't show up in RealOEM or BMWfans. What are they?

Brucey · Post by **Brucey** » Sat Aug 20, 2011 4:27 pm

this is a front coil spring short 'red' as found here

http://bmwfans.info/parts/catalog/E28/S ... il_spring/

BTW all the non-'M635/M6' Bilstein and most M-technic parts are found as options on various E28 models, so don't appear in E24-specific parts searches.

cheers

Jays635 · Post by **Jays635** » Sat Aug 20, 2011 4:51 pm

Chris Wright wrote:
nsxguy7 wrote:will the e90 hats work with the stock e24 mounting plates?
I'm curious about these parts also, the number: 31332225645 , doesn't show up in RealOEM or BMWfans. What are they?

Yes these are the springs that I an running on my E24 635csi Euro. Awesome. They are made by eibach for BmW.

Jays635 · Post by **Jays635** » Sat Aug 20, 2011 5:36 pm

nsxguy7 wrote:will the e90 hats work with the stock e24 mounting plates?

The E90 drop hats are the top mounting plate on the strut assembly. In essence you are exchanging the e24 stock drop hat( top mount plate) for the E90 version. This creates approximately a 15mm drop over the stock set-up.

Jay

Chris Wright · Post by **Chris Wright** » Sat Aug 20, 2011 5:37 pm

Brucey wrote:this is a front coil spring short 'red' as found here

http://bmwfans.info/parts/catalog/E28/S ... il_spring/

BTW all the non-'M635/M6' Bilstein and most M-technic parts are found as options on various E28 models, so don't appear in E24-specific parts searches.

cheers

Whoops!

I pasted the wrong part number, I meant to paste the number 3133674093 "drop hats". I can't find it when I do a generic search (no vehicle selected).
____

But you do raise a question on the Springs: what is the difference between

"Coil spring short red" - 31 33 2 225 645

and

"Coil spring short" - 31 33 2 225 646

They both say "Only applies to m technic "?

I have yet to sort out in my mind which are the M Technic Springs for the Sixer. Some say the M635 and the M Technic Springs are the same, but I keep reading conflicting info.

nsxguy7 · Post by **nsxguy7** » Sat Aug 20, 2011 5:49 pm

do you mean part # 31336764093? because that number comes up on real oem, #3133674093 does not....

Brucey · Post by **Brucey** » Sun Aug 21, 2011 2:41 pm

I don't know the difference between the two springs; the whole subject of BMW springs is savagely complex.... I looked through an ETk trying to fathom it and failed. By the time I'd finished I'd found approxiamtely 45 part numbers that might fit a 6er. Even allowing for the different models, front/rear etc it is still a lot.

I note that even the extra weight of air-con sometimes necessitates a different spring to be used.....

And then there are the mounting pads.... arghhh

-as the French say,

'c'est un casse-tete'

or something like that....

cheers

Jays635 · Post by **Jays635** » Sun Aug 21, 2011 3:26 pm

Brucey wrote:I don't know the difference between the two springs; the whole subject of BMW springs is savagely complex.... I looked through an ETk trying to fathom it and failed. By the time I'd finished I'd found approxiamtely 45 part numbers that might fit a 6er. Even allowing for the different models, front/rear etc it is still a lot.

I note that even the extra weight of air-con sometimes necessitates a different spring to be used.....

And then there are the mounting pads.... arghhh

-as the French say,

'c'est un casse-tete'

Yes there a number of different ones. The key really is to use one that someone has already tried, likes and works. In some cases those other springs are not available. I remember that when I was trying to obtain the euro m-tech front springs we waited forever ( 7+ months) and then finally the e28 m-tech option was presented. Definitely a good move.

Jay

or something like that....

cheers

Brucey · Post by **Brucey** » Sun Aug 21, 2011 6:58 pm

you are quite right, finding a set-up that gives good results on an otherwise identical car is a good move....

Re Chris's query re the difference btween M635 and M-technik springs. I don't know about the fronts, but the rears have to be different, since the coil diameter is different.

The Bilstein and M-technik parts that are most applicable to standard 82-89 6ers are those which are fitted to the E28 M535i and E28 535i for the most part.

cheers

nsxguy7 · Post by **nsxguy7** » Sun Aug 21, 2011 9:18 pm

Front M-Tech Springs: 31332225645
Spring plates (Drop hats): 3133674093
Upper Spring pad: 31331128523

Jay[/quote]

again, are you sure about part #3133674093 for the drop hats? It doesnt come up in real oem...could #31336764093 be the right one? Just dont want to order wrong...

Jays635 · Post by **Jays635** » Sun Aug 21, 2011 9:26 pm

nsxguy7 wrote:Front M-Tech Springs: 31332225645
Spring plates (Drop hats): 3133674093
Upper Spring pad: 31331128523

Jay

again, are you sure about part #3133674093 for the drop hats? It doesnt come up in real oem...could #31336764093 be the right one? Just dont want to order wrong...[/quote]

Okay yes my original part number for the e90 drop hat is missing a digit. The correct BMW part number should read: 31336764093. Sorry for the confusion

Jay

nsxguy7 · Post by **nsxguy7** » Wed Aug 24, 2011 5:01 am

Thanks!

Jon Ackermann · Post by **Jon Ackermann** » Tue Aug 30, 2011 2:40 am

Jay:

Do you know what the spring rate is for the M-Tech springs you installed ?

What did you do for rear springs ?

Could you post pictures of your entire car so we can see the entire stance ?

Thanks.

Jon

Jays635 · Post by **Jays635** » Thu Sep 01, 2011 12:11 pm

Jon Ackermann wrote:Jay:

Do you know what the spring rate is for the M-Tech springs you installed ?

What did you do for rear springs ?

Could you post pictures of your entire car so we can see the entire stance ?

Thanks.

Jon

Jon currently my Euro Six is at the Body shop getting a fresh coat of paint. When it returns I 'll be sure to get some shots of the car posted for you to see. With regards to the rear I went with the short red M-Techs that match the front set. I do not have the part number with me so ( out of town on business) I cannot provide that information. These springs are the ones that are commonly used and referred to by the members of the MyE28.com

Regards,

Jason

kos · Post by **kos** » Sun Sep 25, 2011 1:47 am

whats the consequences of using e90 drop hats......

bigcoupe.com

Tight ride height on my Euro 635csi

Tight ride height on my Euro 635csi

e90 spring hats

Re: e90 spring hats

Re: e90 spring hats

Re: e90 spring hats

e90 spring hats

Re: Tight ride height on my Euro 635csi

Re: Tight ride height on my Euro 635csi

spring hats