crappy e36

[frcefed]

Well, ive got a few questions and need some help making my e36 cool. First, the rear suspension feels really soft and loose, as in the bushings feel weak, where should I go to find either better bushings or control arms?

Second, I put some h&r lowering springs in all the way around but the rear sits just as high as it did before?! Why is that? Haha I hate how high it sits in the rear.

Third, is anyone running a 7200rpm limit? I want to but I'm worried that the m50 w/vanos can't handle it with drifting seeing as I'm @ rev limit literally all day on track days.

[jc43089]

Got the dimensions, here's a sketch i made.  Didn't have time to draw it in CAD.  It has to be a split design for assembly.  The poly ones have an aluminum sleeve through the center, the bolt is an m12.  My poly ones have a sleeve that is about 1" O.D. through the middle, now that I think about it, the sleeve is probably necessary because there needs to be rotation when the suspension compresses and the mount bracket locks down on whatever is in the center.  If you didn't have a sleeve then it would clamp down on the bushing and the rotation would be forced to happen at the O.D. of the bushing against the control arm.

 

[frcefed]

Got the dimensions, here's a sketch i made.  Didn't have time to draw it in CAD.  It has to be a split design for assembly.  The poly ones have an aluminum sleeve through the center, the bolt is an m12.  My poly ones have a sleeve that is about 1" O.D. through the middle, now that I think about it, the sleeve is probably necessary because there needs to be rotation when the suspension compresses and the mount bracket locks down on whatever is in the center.  If you didn't have a sleeve then it would clamp down on the bushing and the rotation would be forced to happen at the O.D. of the bushing against the control arm.

 

Looks good to me.

[Rowleym]

I fucking love you guys. You make my life so much easier haha.

I'll build some today!

[Rowleym]

Also. The split down the center is just flat? No recessed groves r anything?

So. Drill .975 or something close, and press in a 1" alum round stock with a 12mm hole, and exactly 49.25 tall?

[frcefed]

Does the sleeve have to be wider than the 49.25 width?

[jc43089]

The split is flat, OE bushing is not split, but these have to be 2 pieces to fit them into the control arm.  You could make the sleeve maybe .010ish (whatever that is in mm) longer than the 49.25mm, it is mainly so the bushing doesn't get pinched too tight, I would drill the center hole at a snug slip fit for the aluminum sleeve.  Between the bushing and the sleeve is where you want the rotation to happen when the suspension compresses.

[frcefed]

When does production start? Haha

[Rowleym]

When does production start? Haha

I'll build some this week! They will be Delrin.

So... I can't do it for absolutely free.

Price? They shouldn't take too long to machine!

How many should I make?

Might order stock to do a good batch of them.

[frcefed]

I will take at least one set, let me know the price!

[Rowleym]

I will take at least one set, let me know the price!

Haha I'm asking how much I should charge for them, as I have no idea.

[frcefed]

How much will it cost to make them and how much time will it take per set?

[Rowleym]

finally making a couple sets tonight lol

[Rowleym]

Wait are these rear trailing arms, or rear subframe bushings? Lol. I feel like the rtabs are pretty small. Like 1.5" od or less. 



Man I lied. I was going to build these, but I thought they were the same as the e30. I need e30 rear subframe bushing and rear trailing arm bushings. Anyone want to measure some? I have a rear subframe I guess I could measure? Paying 300$ for 30$ worth of delrin is crazy talk to me.