Solid Motor Mounts ???
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,173
Likes: 7,961
From: Napa Valley California
Dr. Detroit
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
Moroso's web site states that a solid transmission mount must be used with solid motor mounts.
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
I have solid mounted dozens of Model A’s and Duece’s with small block Chevys and Fords and never had an issue....don’t see how you would.
My 72’ has no issue either....
Now if the trans mount broke and the trans lifted up I could see it....
Jebby
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
https://www.summitracing.com/nv/sear...rder=Ascending
Dr. Detroit
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
Jebby
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I'm with Mike, solid everything. engine, tranny, and differential. I went solid on the differential as a cure to sever wheel hop in the first two gears when I installed my TKO 600 behind my 427 SBC. QA1's dual adjust and 520# mono spring couldn't control the rear with sticky 335 width rear tires. My automatic would just smoke the tires and release the energy
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,173
Likes: 7,961
From: Napa Valley California
v2racing, I have solid mounts in my car. I also have the differential mounted solid and I have virtually no noticeable vibration.
Mike
gkull, I'm with Mike, solid everything. engine, tranny, and differential. I went solid on the differential as a cure to sever wheel hop in the first two gears when I installed my TKO 600 behind my 427 SBC.
Do you have a manufacturer for the solid transmission mount you are running.
Moroso tech services did not know if theirs would work with my TKO-600.
Mike
gkull, I'm with Mike, solid everything. engine, tranny, and differential. I went solid on the differential as a cure to sever wheel hop in the first two gears when I installed my TKO 600 behind my 427 SBC.
Do you have a manufacturer for the solid transmission mount you are running.
Moroso tech services did not know if theirs would work with my TKO-600.
Last edited by OldCarBum; Feb 26, 2019 at 02:22 PM.
Drifting
Joined: Aug 2015
Posts: 1,939
Likes: 476
From: NSW, Australia
C3 of Year Finalist (track prepared) 2019
Moroso's web site states that a solid transmission mount must be used with solid motor mounts.
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
Moroso's web site states that a solid transmission mount must be used with solid motor mounts.
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
Any negative issues with running the solid trans mount?
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress"
Solid Motor Mounts must be used with solid transmission mount. That makes sense. You had it backwards and it changes the statement dramatically.
You do not have to have solid trans mount with solid motor mounts. You can use rubber or poly at the tranny.
Last edited by HeadsU.P.; Feb 26, 2019 at 04:40 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,173
Likes: 7,961
From: Napa Valley California
[QUOTE=HeadsU.P.;1598951497]Web site does not say you have to run a solid tranny mount with solid motor mounts. It does state:
Solid Motor Mounts must be used with solid transmission mount. That makes sense. You had it backwards and it changes the statement dramatically.
Read it again, we are saying the same thing.
I cut and pasted the sentence directly from the bullet on Moroso's web site on their solid motor mount catalog page.
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress".
Plus I called Moroso and their tech services department told me the same thing.
I will call them back to verify.
Solid Motor Mounts must be used with solid transmission mount. That makes sense. You had it backwards and it changes the statement dramatically.
Read it again, we are saying the same thing.
I cut and pasted the sentence directly from the bullet on Moroso's web site on their solid motor mount catalog page.
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress".
Plus I called Moroso and their tech services department told me the same thing.
I will call them back to verify.
Last edited by OldCarBum; Feb 26, 2019 at 04:51 PM.
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
I don't run a solid transmission mount. I've seen automatic transmission cases, usually tailshaft housings, crack with solid trans mounts. They are not as strong as the engine blocks and our frames flex a lot. I run a poly trans mount. Allows enough flex to keep from breaking but still a lot stiffer than stock.
The TKO may be tough enough to withstand a solid rear mount. I can't say for sure there.
Mike
The TKO may be tough enough to withstand a solid rear mount. I can't say for sure there.
Mike
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I'm fortunate enough to get a cage before this forum came into existence 20 years ago. I never cracked my 700R4 and now I have a blow proof bell housings
I guess you could cut a piece of rubber inner tube and lay it on top of a solid tail shaft mounting block spacer if you couldn't sleep at night worrying about it
I guess you could cut a piece of rubber inner tube and lay it on top of a solid tail shaft mounting block spacer if you couldn't sleep at night worrying about it
Drifting
Joined: Aug 2015
Posts: 1,939
Likes: 476
From: NSW, Australia
C3 of Year Finalist (track prepared) 2019
If I ran a full cage with forward bars (not just a half cage) then I would run a solid transmission mount. But with the amount these chassis flex, and particularly as I'm using the original cast alloy bellhousing (that is a pretty lightly built piece) bolted to my tko600, I run a standard transmission mount to allow the frame to flex without stressing the gearbox/bellhousing.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
[QUOTE=OldCarBum;1598951556]
Yes, that part is correct. But the incorrect portion is:
When using Moroso Solid Engine Mounts, you must use a solid tranny mount. That's not true.
Read your post 19 again.
Web site does not say you have to run a solid tranny mount with solid motor mounts. It does state:
Solid Motor Mounts must be used with solid transmission mount. That makes sense. You had it backwards and it changes the statement dramatically.
Read it again, we are saying the same thing.
I cut and pasted the sentence directly from the bullet on Moroso's web site on their solid motor mount catalog page.
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress".
Plus I called Moroso and their tech services department told me the same thing.
I will call them back to verify.
Solid Motor Mounts must be used with solid transmission mount. That makes sense. You had it backwards and it changes the statement dramatically.
Read it again, we are saying the same thing.
I cut and pasted the sentence directly from the bullet on Moroso's web site on their solid motor mount catalog page.
"Solid Motor Mounts must be used in conjunction with Solid Transmission Mounts to prevent breakage of engine block and transmission case due to torsional stress".
Plus I called Moroso and their tech services department told me the same thing.
I will call them back to verify.
When using Moroso Solid Engine Mounts, you must use a solid tranny mount. That's not true.
Read your post 19 again.
Drifting
Joined: Aug 2015
Posts: 1,939
Likes: 476
From: NSW, Australia
C3 of Year Finalist (track prepared) 2019
I get what you're saying - if using a solid trans mount, then you must use solid engine mounts. Which is not the same as if using solid engine mounts, you must use a solid trans mount.
Dr. Detroit
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
I, like many others am running the Energy trans mount too....works great....1-2 powershift and the shifter doesn’t jump....running a Hurst Competition.
Stock trans mount will lift....poly is much better in this regard....
Jebby
Stock trans mount will lift....poly is much better in this regard....
Jebby
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,173
Likes: 7,961
From: Napa Valley California
It sounds like I'll need to call Moroso and Energy Suspension in the morning.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
If you install Solid Motor Mounts, you DO NOT have to use solid trans mount. Use your choice of material.
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,173
Likes: 7,961
From: Napa Valley California
Today I ordered moroso solid motor mounts and an energy suspension poly trans mount for my 73.
I talked to tech services at energy suspension this morning about the heat and melting motor mounts on our C3’s with headers.
They said that they have had several complaints regarding melting poly motor mounts are aware of the problem and suggested to either install a heat shield, which “might help”, or to run solid motor mounts.
Thanks for all the comments and help.
I talked to tech services at energy suspension this morning about the heat and melting motor mounts on our C3’s with headers.
They said that they have had several complaints regarding melting poly motor mounts are aware of the problem and suggested to either install a heat shield, which “might help”, or to run solid motor mounts.
Thanks for all the comments and help.
Tech Contributor
Joined: Aug 1999
Posts: 14,356
Likes: 6,328
From: At my Bar drinking and wrenching in Lafayette Colorado
I'm running the same setup as Jebby: Solid Moroso motor mounts (...but on both sides) and Energy poly tranny mount. 407 small block putting out 500/500. I hammer it hard every time I drive it, and the setup is good. I was tearing out rubber mounts regularly before going solid. No harshness or vibration beyond what a big solid roller cam normally runs... 
Lars
Lars