92+ Shocks in my 91? - ZR-1 Net Registry Forums

BigIke · 10-10-2017

A long time ago I bought some used take off shocks from a forum member. My 1991 Juan is acting like an old Cadillac, if you push down on a corner it continues to bounce.

Today I took the front shocks out, the gears on mine are different than the lone-gear that came with the new shocks. Mine have a lot of twist, new shocks have limited twist.

Question: Can I use these 92-95 shocks in my 91? If so I need to use the old gears? Both my gears have issues, one doesn't have a stop, and the other is missing teeth.

Sent from my SM-G950U using ZR-1 Net Registry mobile app

GOLDCYLON · 10-10-2017

Not without changing out the top gear to the 92-95 style. Also if your gear can be turned in circles in other words with out a stop the internals on the shock are shot. You can source new gears from Captain Z look for his website if you go that route. The only difference in the shock is the stop length in the top gear. GC

BigIke · 10-10-2017

Just to confirm, the new shocks don't come with gears right

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GOLDCYLON · 10-10-2017

Quote:

Originally Posted by BigIke

Just to confirm, the new shocks don't come with gears right

Sent from my SM-G950U using ZR-1 Net Registry mobile app

Yes they do come with gears.

BigIke · 10-10-2017

Time to start saving... Transmission goes on hold again... Lol

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rkreigh · 10-19-2017

Quote:

Originally Posted by BigIke

A long time ago I bought some used take off shocks from a forum member. My 1991 Juan is acting like an old Cadillac, if you push down on a corner it continues to bounce.

Today I took the front shocks out, the gears on mine are different than the lone-gear that came with the new shocks. Mine have a lot of twist, new shocks have limited twist.

Question: Can I use these 92-95 shocks in my 91? If so I need to use the old gears? Both my gears have issues, one doesn't have a stop, and the other is missing teeth.

Sent from my SM-G950U using ZR-1 Net Registry mobile app

yes you can, but you need to also swap out the controller box

same for going from late model to early

-=Jeff=- · 10-19-2017

Quote:

Originally Posted by rkreigh

yes you can, but you need to also swap out the controller box

same for going from late model to early

Yeah this would be the easier way.. Keep in mind all 92-95 corvette FX3 controllers will work, it is not ZR-1 specific

Hib Halverson · 10-19-2017

Been watching this thread. Several Zroners have offered good info. There is a good article on Selective Ride Control which can be found by clicking here.

In summary...

To change a 90-91 to the 2nd design SRC, one needs: The 2nd design shocks, which will have the right gears on them, and the 2nd design controller. Note that you cannot use the early shocks with the late controller simply by changing the gear on top. It's the bypass valve inside the shock which is, also, different.

In a nutshell, the major difference between the 1st design SRC (89-91) and the 2nd design (92-95) is the speed at which the bypass valves can change states. The actuators rotate at the same speed, but the travel though which the bypass valves move is greatly reduced. Thus, the speed at which the shocks can change states increases. That makes the system more responsive.

Hope that helps.

GOLDCYLON · 10-19-2017

Quote:

Originally Posted by Hib Halverson

Been watching this thread. Several Zroners have offered good info. There is a good article on Selective Ride Control which can be found by clicking here.

In summary...

To change a 90-91 to the 2nd design SRC, one needs: The 2nd design shocks, which will have the right gears on them, and the 2nd design controller. Note that you cannot use the early shocks with the late controller simply by changing the gear on top. It's the bypass valve inside the shock which is, also, different.

In a nutshell, the major difference between the 1st design SRC (89-91) and the 2nd design (92-95) is the speed at which the bypass valves can change states. The actuators rotate at the same speed, but the travel though which the bypass valves move is greatly reduced. Thus, the speed at which the shocks can change states increases. That makes the system more responsive.

Hope that helps.

Hmm well the only visual difference it the length of the top gear. I had no idea the internals were different

10-10-2017	#1
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	92+ Shocks in my 91? A long time ago I bought some used take off shocks from a forum member. My 1991 Juan is acting like an old Cadillac, if you push down on a corner it continues to bounce. Today I took the front shocks out, the gears on mine are different than the lone-gear that came with the new shocks. Mine have a lot of twist, new shocks have limited twist. Question: Can I use these 92-95 shocks in my 91? If so I need to use the old gears? Both my gears have issues, one doesn't have a stop, and the other is missing teeth. Sent from my SM-G950U using ZR-1 Net Registry mobile app __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! Last edited by BigIke; 10-10-2017 at 04:19 PM.

10-10-2017	#2
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,152	Re: 92+ Shocks in my 91? Not without changing out the top gear to the 92-95 style. Also if your gear can be turned in circles in other words with out a stop the internals on the shock are shot. You can source new gears from Captain Z look for his website if you go that route. The only difference in the shock is the stop length in the top gear. GC __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

10-10-2017	#3
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: 92+ Shocks in my 91? Just to confirm, the new shocks don't come with gears right Sent from my SM-G950U using ZR-1 Net Registry mobile app __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

10-10-2017	#5
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: 92+ Shocks in my 91? Time to start saving... Transmission goes on hold again... Lol Sent from my SM-G950U using ZR-1 Net Registry mobile app __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

10-19-2017	#8
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: 92+ Shocks in my 91? Been watching this thread. Several Zroners have offered good info. There is a good article on Selective Ride Control which can be found by clicking here. In summary... To change a 90-91 to the 2nd design SRC, one needs: The 2nd design shocks, which will have the right gears on them, and the 2nd design controller. Note that you cannot use the early shocks with the late controller simply by changing the gear on top. It's the bypass valve inside the shock which is, also, different. In a nutshell, the major difference between the 1st design SRC (89-91) and the 2nd design (92-95) is the speed at which the bypass valves can change states. The actuators rotate at the same speed, but the travel though which the bypass valves move is greatly reduced. Thus, the speed at which the shocks can change states increases. That makes the system more responsive. Hope that helps. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878