slotted upper strut bolt hole. KW x GReddy - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Roadcone · 07-09-2018, 09:17 AM

I have already sent KW an E-Mail asking what their official response is but I have not yet received a reply. I expect to hear back within a day or two.

I have not found mention of how KW intends for this slotted upper hole to be used. NORMALLY you'd have an insert locking everything in place. Something like a 0* insert and then a 2.5* or something like that. Am I missing pieces or am I supposed to rely on clamping force to hold it in position? I know people do this on stock stuff to gain more camber but that has always seemed sketchy to me.

cjd · 07-09-2018, 09:29 AM

Stock bolt and torque to spec. I haven't had issues with this slipping on my RCE coilovers.

Roadcone · 07-09-2018, 09:31 AM

the stock bolt isnt oval. what is the range of movement here?

churchx · 07-09-2018, 12:42 PM

That "NORMALLY" of inserts of preset camber and to prevent slippage is common for rally coilovers (another example and

another). IIRC there was mention of such for eg. MCS coilovers, for STX rule compatibility or smth. like that. But Normally even if slot hole is slotted for camber adjustment on aftermarket coilover, maker doesn't also offer inserts too. One should put (non camberbolt) bolt there at rough position one needs, tighten, and fine-adjust camber using other hole. Works for most, if not receiving heavy hits to suspension.

Roadcone · 07-10-2018, 09:35 AM

just seems super janky to me to just hope its where you want it lol

AFRichZC6 · 07-10-2018, 11:42 AM

It's not janky. That's normal for most struts. Clamping force is what primarily holds the spindle and strut together in the same position, and the amount of load you see on the street or track shouldn't cause the hardware to slip, if they are torqued correctly.

The machined inserts in MCS (and also AST/Moton) struts are just like a back-up in case it slips under extremely high load. You still don't want to rely on the bolt shank itself to take the load - shear load is not where it is strongest.

07-09-2018, 09:17 AM	#1
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 181 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	slotted upper strut bolt hole. KW x GReddy I have already sent KW an E-Mail asking what their official response is but I have not yet received a reply. I expect to hear back within a day or two. I have not found mention of how KW intends for this slotted upper hole to be used. NORMALLY you'd have an insert locking everything in place. Something like a 0* insert and then a 2.5* or something like that. Am I missing pieces or am I supposed to rely on clamping force to hold it in position? I know people do this on stock stuff to gain more camber but that has always seemed sketchy to me. Attached Images __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

07-09-2018, 09:31 AM	#3
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 181 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	the stock bolt isnt oval. what is the range of movement here? __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

07-10-2018, 09:35 AM	#5
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 181 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	just seems super janky to me to just hope its where you want it lol __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

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07-09-2018, 12:42 PM	#4
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,334 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	That "NORMALLY" of inserts of preset camber and to prevent slippage is common for rally coilovers (another example and another). IIRC there was mention of such for eg. MCS coilovers, for STX rule compatibility or smth. like that. But Normally even if slot hole is slotted for camber adjustment on aftermarket coilover, maker doesn't also offer inserts too. One should put (non camberbolt) bolt there at rough position one needs, tighten, and fine-adjust camber using other hole. Works for most, if not receiving heavy hits to suspension.

07-10-2018, 11:42 AM	#6
AFRichZC6 Senior Member Join Date: Jan 2014 Drives: BRZ Location: Bay Area, CA Posts: 197 Thanks: 104 Thanked 123 Times in 70 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	It's not janky. That's normal for most struts. Clamping force is what primarily holds the spindle and strut together in the same position, and the amount of load you see on the street or track shouldn't cause the hardware to slip, if they are torqued correctly. The machined inserts in MCS (and also AST/Moton) struts are just like a back-up in case it slips under extremely high load. You still don't want to rely on the bolt shank itself to take the load - shear load is not where it is strongest.

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