ohlins R/T coilover preload and height adjustment

robc1976 · 09-14-2013, 02:51 PM

I think I know the answer to my own question but need confirmation.

The ohlins if I am correct does not compress the spring when heightening lowering it leaving it and preload unchanged. If you set the preload to 7MM (compressing spring) how does this not change preload when turning lower spring perch? Only thing I can figure is since the top perch spins freely the shock just threads up and down thru bottom perch. I would think the preload would still get afected when raising and lowering because won't collar just thread away from the the spring instead of the perch keepining preload? Wouldn't that cause the collar to just thread away instead of keeping position as you lower/heighten vehicle?

I haven't slept much so maybe this is a stupid question. My other set threaded into shock body so this has me a bit confused.

DiegoM · 09-15-2013, 12:00 AM

Quick question! No time to do trial and error. Just had the ohlins installed and be on the track soon. Do I need to dial clockwise on all front and rear suspensions in order to get a stiffer track ready feel? Thanks in advance!

robc1976 · 09-15-2013, 01:51 AM

Quote:

Originally Posted by DiegoM

Quick question! No time to do trial and error. Just had the ohlins installed and be on the track soon. Do I need to dial clockwise on all front and rear suspensions in order to get a stiffer track ready feel? Thanks in advance!

Clockwise is harder (stiffer) and counter clockwise is softer.

ashmostro · 09-15-2013, 07:46 AM

I don't think ohlins dfv have separate preload and height adjustments, bro...

I think the second collar is just for locking the one above it.

See pics here- http://www.e90post.com/forums/showthread.php?t=470893

robc1976 · 09-15-2013, 08:01 PM

Quote:

Originally Posted by ashmostro

I don't think ohlins dfv have separate preload and height adjustments, bro...

I think the second collar is just for locking the one above it.

See pics here- http://www.e90post.com/forums/showthread.php?t=470893

You are correct, I realized this after posting....feel like a idiot lol!

ashmostro · 09-15-2013, 08:05 PM

Most folks aren't smart enough to even know some coils have that feature! It's all good bro

robc1976 · 09-15-2013, 08:18 PM

Quote:

Originally Posted by ashmostro

Most folks aren't smart enough to even know some coils have that feature! It's all good bro

I got confused because my BC coilovers did.

ashmostro · 09-15-2013, 08:26 PM

I'm surprised more coils don't have this feature, but I imagine it's because it would cause so much drama for customer service departments...

Most motorcycle shocks have this but setting sag correctly is a lot more critical on lighter vehicles.

09-14-2013, 02:51 PM	#1
robc1976 DIYER 613 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	ohlins R/T coilover preload and height adjustment I think I know the answer to my own question but need confirmation. The ohlins if I am correct does not compress the spring when heightening lowering it leaving it and preload unchanged. If you set the preload to 7MM (compressing spring) how does this not change preload when turning lower spring perch? Only thing I can figure is since the top perch spins freely the shock just threads up and down thru bottom perch. I would think the preload would still get afected when raising and lowering because won't collar just thread away from the the spring instead of the perch keepining preload? Wouldn't that cause the collar to just thread away instead of keeping position as you lower/heighten vehicle? I haven't slept much so maybe this is a stupid question. My other set threaded into shock body so this has me a bit confused. __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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09-15-2013, 12:00 AM	#2
DiegoM Private First Class 12 Rep 121 Posts Drives: Alpine White Join Date: Aug 2009 Location: NY iTrader: (0)	Quick question! No time to do trial and error. Just had the ohlins installed and be on the track soon. Do I need to dial clockwise on all front and rear suspensions in order to get a stiffer track ready feel? Thanks in advance!
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09-15-2013, 07:46 AM	#4
ashmostro Brigadier General 1251 Rep 4,087 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	I don't think ohlins dfv have separate preload and height adjustments, bro... I think the second collar is just for locking the one above it. See pics here- http://www.e90post.com/forums/showthread.php?t=470893
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09-15-2013, 08:05 PM	#6
ashmostro Brigadier General 1251 Rep 4,087 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Most folks aren't smart enough to even know some coils have that feature! It's all good bro
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09-15-2013, 08:26 PM	#8
ashmostro Brigadier General 1251 Rep 4,087 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	I'm surprised more coils don't have this feature, but I imagine it's because it would cause so much drama for customer service departments... Most motorcycle shocks have this but setting sag correctly is a lot more critical on lighter vehicles.
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