///M1.5 Build Thread

amg6975

Corporal
Oct 27, 2019
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2012 135, 2005 ZHP, 2009 fJCW
Interesting that has the additional removable piece like the M3... The 135 doesn't, the fender liners go down around.
 

amg6975

Corporal
Oct 27, 2019
243
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2012 135, 2005 ZHP, 2009 fJCW
Yeah, probably exactly what I'll do. Doesn't protect the subframe from debris but should be fine.
 

amg6975

Corporal
Oct 27, 2019
243
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2012 135, 2005 ZHP, 2009 fJCW
It actually looks like the M3 lower liner piece will fit with proper trimming of the 1 series liner. The outside edge will need one new hole for the plastic screw that holds the side skirt on but other than that, it looks like it was supposed to be there. I'll post the final solution above when I get it all installed.

IMG_4512.jpg
 
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amg6975

Corporal
Oct 27, 2019
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2012 135, 2005 ZHP, 2009 fJCW
The 1m guard liners did not reach those as seen in the picture I provided but the 135 ones should work nicely as they extend a little further down.

How sure are you? your fender liners say "M3" on them, just like the ones on the M3...
 

amg6975

Corporal
Oct 27, 2019
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2012 135, 2005 ZHP, 2009 fJCW
M3 will not fit the guards are different shape, the only way is to convert to 1m guards and liners if 135i won't work

I'm not at all convinced of that. They're exactly the same as the 135 liners except how wide they are. Yours literally say "M3" on them:
1613591789070.png
 

syn909

Specialist
Jun 27, 2018
56
8
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'07 335i
Agree with your sentiments. I am also trying to reduce front weight; that bar saves a little bit but then I am installing an oversized intercooler and... sigh.

There is also a thread on the subframe 'brace' that the M3 uses. Talks about rigidity and how to fit it to the triangle bar setup our cars have: https://www.e90post.com/forums/showthread.php?p=26613054#post26613054


[EDIT] I keep forgetting that 1series !== 3series in all regards, so hopefully this stuff is applicable...

Wondering if this would work if i made it out 3/8 thick aluminum bar they do a similar brace on the mini:
NT7ds8D.jpg
 

martymil

Colonel
Sep 6, 2017
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Down Under @ madautodevelopments
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S65 1m
The m3 subframe is different and uses a belly pad for rigidity and is way stronger than the flat bar in every direction.

The belly pan is made from very thick alloy plate and you can feel the stiffness it adds to the front end through the corners.

One has to experience the difference between the n54 and s65 to appreciate how much better the v8 is in this chassis.

I'm not knocking the n54 at all, i love the power and ferocious delivery it makes but its more suited to a drag setup than a canyon carver when compared B2B.

With the n54 i was struggling to hit 1g and being on the limit through the corners, now I'm easily pulling 1.1g's with the s65 and street setup.



20201109_145019.jpg
 
Last edited:

syn909

Specialist
Jun 27, 2018
56
8
0
Ride
'07 335i
The m3 subframe is different and uses a belly pad for rigidity and is way stronger than the flat bar in every direction.

The belly pan is made from very thick alloy plate and you can feel the stiffness it adds to the front end through the corners.

One has to experience the difference between the n54 and s65 to appreciate how much better the v8 is in this chassis.

I'm not knocking the n54 at all, i love the power and ferocious delivery it makes but its more suited to a drag setup than a canyon carver when compared B2B.

With the n54 i was struggling to hit 1g and being on the limit through the corners, now I'm easily pulling 1.1g's with the s65 and street setup.

@martymil thanks for the feedback it did not seem like a good compromise between the m reinforcement plate. and holy moly look at the m3 front subframe:

261561_x800 copy.jpg
 

martymil

Colonel
Sep 6, 2017
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Down Under @ madautodevelopments
madautodevelopments.com
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S65 1m
its way different to the n54, far more rigid with extra rear support that go under the footwells.

The you have the massive thick alloy plate with 7 x m10 10.9 grade bolts to reinforce the subframe

It really stiffens the front end up a lot, it really changes how the car handles especially with the lower center of gravity of the v8.

1m - RealOEM.com - Online BMW Parts Catalog

M3 - RealOEM.com - Online BMW Parts Catalog
 

syn909

Specialist
Jun 27, 2018
56
8
0
Ride
'07 335i
Totally different but both frames will bolt up to the chassis with no modification.

I feel like the prior photo I posted using 3/8 solid aluminum bar would prove to be a worthy cost effective effort in stiffening the front subframe. I wonder if anyone on here has any drivetrain engineering experience to better guide me.