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Views: 222 Author: Ella Publish Time: 2025-02-01 Origin: Site
Content Menu
● What Are Motor Mounts and Why Do They Matter?
● The Case for Hydraulic Motor Mounts
>> Advantages of Hydraulic Mounts
>> Drawbacks
● Should You Use a Hydraulic Motor Mount?
>> Use Cases
● Step-by-Step Replacement Guide
● FAQs
>> 1. Can I Mix Hydraulic and Rubber Mounts?
>> 2. How Long Do Hydraulic Mounts Last?
>> 3. Do Hydraulic Mounts Improve Performance?
>> 4. Are Aftermarket Hydraulic Mounts Reliable?
>> 5. Can I Install Hydraulic Mounts Myself?
The Saab 900, a hallmark of Swedish automotive engineering, demands meticulous maintenance to preserve its performance and driving comfort. Among its critical components, motor mounts play a pivotal role in securing the engine, reducing vibrations, and ensuring longevity. This article examines whether a hydraulic motor mount is necessary for your Saab 900, explores its benefits, installation nuances, and addresses common owner concerns.
Motor mounts secure the engine to the vehicle's chassis while dampening vibrations and shocks. In the Saab 900, two primary types are used:
1. Rubber Mounts:
- Cost-effective but prone to hardening and cracking over time.
- Less effective at isolating high-frequency vibrations.
2. Hydraulic Mounts:
- Use fluid-filled chambers (often glycol/water) for superior vibration absorption.
- Ideal for high-performance or turbocharged models due to their durability.
- Enhanced Vibration Dampening:
Hydraulic mounts absorb both low-frequency vibrations (e.g., rough roads) and high-frequency vibrations (e.g., engine RPM fluctuations).
- Durability:
Constructed with reinforced rubber and aluminum housings, hydraulic mounts outlast standard rubber variants.
- Performance Optimization:
Critical for modified engines or high-horsepower applications to prevent drivetrain misalignment and gearbox issues.
- Cost: ~30–50% more expensive than rubber mounts.
- Increased Vibration Transfer:
Using multiple hydraulic mounts (e.g., in race setups) amplifies cabin vibrations.
- Pre-1987 Non-Turbo/Automatic Models:
Originally equipped with barrel-style rubber mounts. Upgrading to hydraulic mounts requires bracket modifications.
- 1987+ Turbo Models:
Factory-fitted with hydraulic mounts. Replacing them with non-hydraulic alternatives degrades ride quality.
| Scenario | Recommended Mount Type |
|---|---|
| Daily Driving | Hydraulic (balances comfort and durability) |
| Performance Modifications | Hydraulic or polyurethane (stiffness for reduced engine movement) |
| Vintage Restoration | OEM-spec rubber or upgraded hydraulic |
- Jack stands
- 13mm, 15mm, and 17mm sockets
- Torque wrench
- Hydraulic mount kit (e.g., [Modern Classic Saab's 6061 Aluminum Kit]
1. Safety First:
Lift the front end using jack stands and disconnect the battery.
2. Remove Old Mount:
- Unbolt the engine bracket (13mm or 17mm bolts).
- Support the engine with a hydraulic jack to relieve mount pressure.
3. Install New Hydraulic Mount:
- Align the mount's slotted hole with the chassis bracket (logo faces passenger side on LHD models).
- Tighten bolts to 40–50 Nm torque.
4. Reassemble and Test:
Reconnect components and test for reduced vibrations and engine stability.
Hydraulic motor mounts are essential for Saab 900 turbo models and highly recommended for modified non-turbo variants. They balance vibration isolation, durability, and performance—critical for preserving the car's iconic driving experience. While costlier than rubber mounts, their longevity and effectiveness justify the investment for most owners.
Avoid mixing types—consistent mounts ensure balanced vibration control. Turbo models should retain full hydraulic setups.
Typically 80,000–120,000 miles, but inspect annually for fluid leaks or rubber cracks[.
Yes—by stabilizing the engine during aggressive driving, they prevent drivetrain flex and gear misalignment.
Reputable brands like Powerflex and RBM Saab offer OEM-grade durability[1][15]. Avoid cheap alternatives prone to rapid failure.
Yes, with intermediate mechanical skills. Follow torque specs precisely to avoid misalignment.
[1] https://www.modernclassicsaab.com/products/p/engine-mounts
[2] https://www.youtube.com/watch?v=fMlfYl0D_a8
[3] https://transgold.com.au/hydraulic-engine-mount-work/
[4] https://bklblog.com/do-i-need-a-saab-900-hydraulic-motor-mount/
[5] https://www.youtube.com/watch?v=Gz-uBuE-c2w
[6] https://www.mtcparts.com/what-benefits-of-hydraulic-vs-rubber-engine-mounts/
[7] https://www.rbmsaabparts.com/front-engine-mount-saab-900-hydraulic--_l_EN_r_67_i_743.html
[8] https://www.rbmperformance.com/engine-mount-left-or-right-for-saab-900-hydraulic-mount--_l_EN_r_67_i_739.html
[9] https://www.rmeuropean.com/Products/32017993-MFG793-V1083.aspx
[10] http://forum.saabturboclub.com/showthread.php/97132-S-900-OG-Engine-Mounts
[11] https://www.superspares.com.au/front-rear-hydraulic-engine-mount-kit-for-saab-900
[12] https://www.pelicanparts.com/byv-900-1979/c-engine_c-engine-miscellaneous_c-engine-mounts
[13] https://bklblog.com/do-i-need-a-saab-900-hydraulic-motor-mount/
[14] https://www.saabits.com/all/saab-900-engine-mounting-rear-hydraulic-style-rubber
[15] https://www.rbmperformance.com/front-engine-mount-saab-900-hydraulic--_l_EN_r_67_p_1v5_i_743.html
[16] https://www.youtube.com/watch?v=f-1dFKEK4vU
[17] https://www.rmeuropean.com/Products/32017993-MFG793-V1077.aspx
[18] https://www.rbmsaabparts.com/engine-mount-left-or-right-for-saab-900-hydraulic-mount--_l_EN_r_67_i_739.html
[19] https://www.youtube.com/watch?v=4bker5kaYkk
[20] https://f87.bimmerpost.com/forums/showthread.php?t=1940749
[21] https://grassrootsmotorsports.com/forum/grm/hydraulic-engine-mounts-for-v8-restomods/238893/page1/
[22] https://www.youtube.com/watch?v=jbTPvaHK5I0
