My rising shifter - ZR-1 Net Registry Forums

efnfast · 09-05-2022

So, when you hammer the throttle, the shifter rises, a lot. I thought maybe I just didn't remember this happening.

While in Carlisle, I lent Mark from Mirrock my car and he questioned it, so I figured there really was a problem.
I thought it might be motor mounts. It sounds like they are a pain to do, and hard to come by.

I was ready to go to a maintenance day in wazoo land for some help with this.

I mentioned it to Marc H in Carlisle. He said the C beam was loose.
Guess what? The C beam was loose.
Dropped the exhaust and tightened the bolts per Marc's instructions.
It's raining, so I haven't driven it yet. - Steve

WARP TEN · 09-05-2022

Quote:

Originally Posted by efnfast

So, when you hammer the throttle, the shifter rises, a lot. I thought maybe I just didn't remember this happening.

While in Carlisle, I lent Mark from Mirrock my car and he questioned it, so I figured there really was a problem.
I thought it might be motor mounts. It sounds like they are a pain to do, and hard to come by.

I was ready to go to a maintenance day in wazoo land for some help with this.

I mentioned it to Marc H in Carlisle. He said the C beam was loose.
Guess what? The C beam was loose.
Dropped the exhaust and tightened the bolts per Marc's instructions.
It's raining, so I haven't driven it yet. - Steve

Always good to have Marc around for a little advice. Have you installed Bill B's C beam plates? I understand that helps. Fortunately I never ran into this problem on my old Z's, but maybe that's because Marc was maintaining them and I just never knew of a problem. Glad you got yours figured out. --Bob

efnfast · 09-05-2022

I do have the beam plates. Don't know if that helps or not. Marc did have me over torque them a little. I think torque spec is 37 pounds. They are pretty big bolts, that doesn't seem like much.

dredgeguy · 09-05-2022

Glad you found the issue Steve, come down for a Wazoo maintenance day anyhow.

efnfast · 09-05-2022

I haven't driven it yet, but....
Maintenance day would be fun. Someday.
And thank you to Marc. I hate to ask him work questions on a social day.

XfireZ51 · 09-05-2022

Steve,

A ?tell? on motor mounts is having the D/S exhaust tips sitting lower than the P/S. Had that problem and always needing to adjust and tighten hangers. One of the times we pulled the motor, I asked Pete to checks motor mounts. P/S was busted. Replaced it, and now exhaust is straight.
I had rising shifter once and it was the CBeam plates. However, the motor mount could have been a contributing factor to that. If the shifter starts rising again, I would check mounts.

Ccmano · 09-05-2022

I haven't see a Z yet where at least one (if not both) of the engine mounts haven't been broken. If the engine has never been out or at least closely inspected, my money is on a broken engine mount. It's amazing how much higher they sit with new mounts.
H

efnfast · 09-05-2022

So, maybe I haven't fixed the problem yet. I'll find out next time I drive it.
Any good sources for motor mounts?

Young1 · 09-05-2022

Rockauto
Anchor 2902
$16.69
You know if you?re going to change the motor mounts while you are there you just might as well go all the way and make a 410 out of it. Don?t you think?

XfireZ51 · 09-05-2022

Quote:

Originally Posted by Young1

Rockauto
Anchor 2902
$16.69
You know if you?re going to change the motor mounts while you are there you just might as well go all the way and make a 410 out of it. Don?t you think?

Absolutely logical.

09-05-2022	#1
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,478	My rising shifter So, when you hammer the throttle, the shifter rises, a lot. I thought maybe I just didn't remember this happening. While in Carlisle, I lent Mark from Mirrock my car and he questioned it, so I figured there really was a problem. I thought it might be motor mounts. It sounds like they are a pain to do, and hard to come by. I was ready to go to a maintenance day in wazoo land for some help with this. I mentioned it to Marc H in Carlisle. He said the C beam was loose. Guess what? The C beam was loose. Dropped the exhaust and tightened the bolts per Marc's instructions. It's raining, so I haven't driven it yet. - Steve

09-05-2022	#3
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,478	Re: My rising shifter I do have the beam plates. Don't know if that helps or not. Marc did have me over torque them a little. I think torque spec is 37 pounds. They are pretty big bolts, that doesn't seem like much.

09-05-2022	#4
dredgeguy Join Date: Aug 2012 Location: Ellicott City, MD Posts: 1,711	Re: My rising shifter Glad you found the issue Steve, come down for a Wazoo maintenance day anyhow. __________________ Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa

09-05-2022	#5
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,478	Re: My rising shifter I haven't driven it yet, but.... Maintenance day would be fun. Someday. And thank you to Marc. I hate to ask him work questions on a social day.

09-05-2022	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,707	Re: My rising shifter Steve, A ?tell? on motor mounts is having the D/S exhaust tips sitting lower than the P/S. Had that problem and always needing to adjust and tighten hangers. One of the times we pulled the motor, I asked Pete to checks motor mounts. P/S was busted. Replaced it, and now exhaust is straight. I had rising shifter once and it was the CBeam plates. However, the motor mount could have been a contributing factor to that. If the shifter starts rising again, I would check mounts. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

09-05-2022	#7
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: My rising shifter I haven't see a Z yet where at least one (if not both) of the engine mounts haven't been broken. If the engine has never been out or at least closely inspected, my money is on a broken engine mount. It's amazing how much higher they sit with new mounts. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

09-05-2022	#8
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,478	Re: My rising shifter So, maybe I haven't fixed the problem yet. I'll find out next time I drive it. Any good sources for motor mounts?

09-05-2022	#9
Young1 Join Date: Sep 2016 Location: Ocala, FL Posts: 898	Re: My rising shifter Rockauto Anchor 2902 $16.69 You know if you?re going to change the motor mounts while you are there you just might as well go all the way and make a 410 out of it. Don?t you think? __________________ Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much.