Subframe spacers?

[surebimmer]

Anyone use the subframe spacers from 300mm.de to help long tube headers clear the subframe? Also seems like dropping the motor down 10mm might improve the handling?

http://300mm.de/achse25/achse25.htm

[Yeee30]

i'd be scared to install these for my engine already being as low as it is but it can be solved with spacers to raise it back up... let me know how it goes if u purchase them i'd like to know myself.

[JGood]

Wouldn't dropping the subframe create more angle on the control arm, doing the opposite of improving handling?

I'd think it would make more sense to raise the engine with a few washers, or notch the subframe, or get the headers modified, then to change the suspension geometry.

[z31maniac]

^Yup, lowering the subframe would "flatten" out the control arm since the inner pivot would come down.

So you would get into the "positive camber gain" portion of the curve even sooner.

I've thought about asking one of the local welding guys here to build a tube front subframe that raises the pickup point of the inner ball joint. Tube subframe would probably be lighter as well.

I'm sure it wouldn't be cheap though.

[M-technik-3]

There was a start to a GB here for these locally made but not sure what happened to it.

[Massive Lee]

Lowering the front subframe is indeed a bad idea, unless the car stands still in a showroom, or some custom control arms are fabricated to alter the roll center. Spacing out the control arms and steering arms will be required.

BimmerWorld sell kits for the e36 which can easily be adapted to e30 control arms (they are very similar)

[z31maniac]

Come to think of it, if one WERE inclined to do a custom subframe, why not just move the inner pickup up.

Could also move it slightly outboard and forward to create more camber and caster as well, no?

[surebimmer]

Didn't think of that. All made good points. That's why i posted. Got any ballpark idea what a tubular front subframe would run?

[z31maniac]

$$$$$$$$$$$$$$$$$$$

[Dominic49]

the motor is mounted to the subframe what would dropping it help for exhaust mani clearance?

the spacers are for running an s38/m(s)60(2) where there isnt room for a hood.