Excessive Engine Movement

sfdon

Well-Known Member
Site Donor
Site Donor $$
Messages
8,295
Reaction score
4,650
Location
sfbay area
Lemforder is good. My shop that rebuilds all my driveshafts uses rein and warranties them so I follow their lead.
 

Ohmess

I wanna DRIVE!
Site Donor $
Messages
4,899
Reaction score
2,730
Location
Aiken, SC
Hey Don -- who does your driveshafts? I need to have the one on my e34 rebuilt.
 

sfdon

Well-Known Member
Site Donor
Site Donor $$
Messages
8,295
Reaction score
4,650
Location
sfbay area
driveline in San Leandro


4.8Address: 2474 Teagarden St, San Leandro, CA 94577


Hours:
Open ⋅ Closes 5:30PM

Phone: (510) 352-3500


Ask a questionSee all questions (1)




loading_24.gif



https://www.google.com/maps/uv?hl=e...Search&imagekey=!1e2!2sChdBJQX9D2iKB_Z0x6LtcA


loading_24.gif




"Always great work at a fair price."

"Very knowledgeable staff."




loading_24.gif
 

lloyd

Well-Known Member
Messages
444
Reaction score
94
View attachment 50595 Or if your not on a budget.... or happen to live in Australia

This could be a good deal if the seller includes a photo of a genuine red handled screwdriver manufactured in Nord or Sud Germany.

FYI: A few years ago I purchased a center support bearing mount to replace one with a tear. It was from a different vendor - and pictured complete as shown above. It arrived without a bearing. Out of frustration, and not unlike the recent thread about reuse of flywheel bolts, the torn unit's bearing was eventually pressed into service in the replacement carrier.

Regarding internet bargains, some may remember a post touting "Liquid Glass Sealer" https://e9coupe.com/forum/threads/liquid-glass-sealer.8024/ Trending on-line prices indicate this product may rival red handled screwdrivers as a retirement investment. I'm hoping we won't have to purchase a larger safe to protect our car wax along with crypto currency, crypto screwdrivers, and assorted crypto NLA parts.

ZCMHCNRYzcK4.jpg
 

Rek

Well-Known Member
Messages
1,119
Reaction score
356
Location
Islington London England
One new motor mount resolved the issue. The old one was noticeably softer. I think there might still be an issue with the gearbox mount heating up because of the exhaust. A small heat shield might fix that, or wrapping the exhaust in that vicinity.
 

lloyd

Well-Known Member
Messages
444
Reaction score
94
I think there might still be an issue with the gearbox mount heating up because of the exhaust. A small heat shield might fix that, or wrapping the exhaust in that vicinity.

Once the transmission mount is cooked, in my limited experience, it remains cooked. (Unless you have discovered a means of revulcanizing the rubber.) Given your mixed reviews of "rubber" engine and transmission mounts, you might consider presumably more durable urethane for some or all of the mounts. As noted elsewhere, they are generally much stiffer and will transmit more movement to the chassis and your vertebra. Another alternative is to literally envelope your current rubber mount/s with Devcon Flexane 60 or 80 or similar (urethane). Effective, although probably not the most cosmetically appealing approach.

devcon-38794_15800_DV_WebXL.jpg


post-222-1223829961.jpg




http://www.peachparts.com/shopforum...made-polyurethane-engine-mounts-bushings.html
https://www.energysuspensionparts.com/diymmi
 

Rek

Well-Known Member
Messages
1,119
Reaction score
356
Location
Islington London England
It was replaced less than £500 miles ago. I base my presumption on a short ride where I could feel the movement, but much less than before.

I will repace the mount but need a solution to stop it from being cooked, if that is the cause. I will try your heat shield idea, or perhaps exhaust wrap.
 

lloyd

Well-Known Member
Messages
444
Reaction score
94
For Chrimminey sakes it’s $5 and 62 cents to replace the mount... just replace it.

https://www.rmeuropean.com/Products/23711109173-MFG36-V146.aspx

The transmission mount pictured in your link mimics the E9 motor mounts in shape, i.e., round like a cylinder. However, there is another angular version, PN 23711102692. Assuming, for the moment, that they both use similar rubber compounds, with similar elasticity - is one mount considered superior or favored over the other, and why? (Have used both without issues and both seem available.) To complicate matters, another superseding PN number appears: 23711246474.



3168_2.png



23711109173-MFG36-2.jpg


23711102692-M9.jpg
 
Last edited:

inovermyhead

Well-Known Member
Messages
516
Reaction score
166
Location
Sydney
4AC3FC18-2AA5-45C7-8E38-2B7AE495EB3D.jpeg
2051FA35-7891-48EA-9C2E-805DDE64F56D.jpeg
So new bits arrived..
Just to be clear, I assume that we are looking at the rear of the center mount and to preload it you push it towards the engine by a mill or two then final tighten?

The engine mounts look more than up to the job and I will report back when fitted
 

sfdon

Well-Known Member
Site Donor
Site Donor $$
Messages
8,295
Reaction score
4,650
Location
sfbay area
Oh boy- one of those “it doesn’t make sense” or counterintuitive moments. That appears to be the front towards the engine side. Drives me nuts.
The difference between mounts?
One costs 20 x more.
 

Rek

Well-Known Member
Messages
1,119
Reaction score
356
Location
Islington London England
The engine mounts look more than up to the job and I will report back when fitted[/QUOTE]


They look like beefy engine mounts. Let me know how you get on with those. It seems the metal sides might preclude the need for heat insulation.
 

lloyd

Well-Known Member
Messages
444
Reaction score
94

Judging a book by its cover, the metal clad mount you pictured looks as though it could outlast the rest of the car.

The packaging indicates it is for an S14 engine, which weighs less than the M30. Bearing in mind that the M30 is an inherently smooth running engine, I am curious if anyone has gravitated toward using the stock S14 mounts (PN 11812225598) and what, if any, advantage they might offer over the standard tuna can engine mounts?




Stock M30 tuna can mounts on right
e30-hd-mounts-2.JPG


Stock S14 engine mounts
1084402_x800.jpg








vibra-technics.jpg


It was realised in the early 1990’s that there were some fast and expensive sports cars being built with fairly crude engine mountings and that little was available for the specialist car manufacturer when it came to design and supply of performance engine mounting systems. Vibra-technics Automotive was originally established to fill that gap. Subsequently racing and fast road saloon car mounts were developed for a variety of makes and this has grown the business to where it is now, offering over 50 specific well engineered engines and gearbox mounting systems.

The Vibra-technics Team
Vibra-technics Automotive technical staff have over 30 years collective experience in the design and manufacture of rubber components used in the automotive industry. The experience was gained working for a number of multinational rubber companies involved in the design and manufacture of chassis components used by all the major automobile manufacturers.

Why use Rubber?
Vibra-technics products are manufactured primarily from natural rubber compounds and occasionally from blends of synthetic and natural rubber to give particular properties for specific applications. Extensive experience and testing in all kinds of environmental conditions by automobile manufacturers has shown that only natural rubber compounds give optimum performance and durability (which is why it is still used by every major car manufacturer). Where the rubber needs to be attached to metal components, this is achieved by chemically bonding the rubber to the metal during the moulding process, using the latest chemical adhesive systems.

Why fit Vibra-technics?
Vibra-technics rubber-to-metal bonded products are designed specifically for high performance applications where a direct replacement for the standard mount is required along with a much higher level of engine control to cope with higher horse power and increased levels of torque. The fast road mounts give significant improvements in ride and handling without adversely effecting vibration levels. The competition mounts also eliminate clearance problems with strut braces and exhaust systems by reducing engine movement. By reducing engine movement the car will feel far more responsive.

Benefits of Vibra-technics

  • High quality well engineered engine and gearbox mounts
  • Significant increase in road holding and reduced engine movement
  • Increase in throttle response
  • Will not deteriorate like the factory fit bushes
  • By changing the front engine mount only you will notice a big difference in reduced engine movement and throttle response
  • Available for a wide range of performance vehicles
  • A brand well known all over the world for quality and for producing results
  • Superb value for money
  • Great prices!
 

Ohmess

I wanna DRIVE!
Site Donor $
Messages
4,899
Reaction score
2,730
Location
Aiken, SC
The transmission mount pictured in your link mimics the E9 motor mounts in shape, i.e., round like a cylinder. However, there is another angular version, PN 23711102692. Assuming, for the moment, that they both use similar rubber compounds, with similar elasticity - is one mount considered superior or favored over the other, and why? (Have used both without issues and both seem available.) To complicate matters, another superseding PN number appears: 23711246474.



3168_2.png



23711109173-MFG36-2.jpg


23711102692-M9.jpg

I've had both of those mounts in my car, before going to the Coupe King mount; I believe the round one is appropriate for the steel tranny mount and angular one goes with the later model aluminum mount some folks use.
 

sfdon

Well-Known Member
Site Donor
Site Donor $$
Messages
8,295
Reaction score
4,650
Location
sfbay area
100E4018-684F-4E44-AA39-9D6FF49D68C2.jpeg B16F4E46-7161-444D-85CA-F663903F3509.jpeg
View attachment 51158 View attachment 51159 So new bits arrived..
Just to be clear, I assume that we are looking at the rear of the center mount and to preload it you push it towards the engine by a mill or two then final tighten?

The engine mounts look more than up to the job and I will report back when fitted


Just to be very very clear-that pic is the side that goes to the FRONT of the car. NOT the rear.
 
Top