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09-23-2017, 02:52 PM | #1 |
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Join Date: Jul 2017
Location: Spokane, Washington state
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front motor mount springs
I have read that many aftermarket front motor mount springs are too big. Correct springs fully compressed (like tested in a vice) should be 7/8 inch or less to allow the motor to be aligned correctly with the drive train.
The ones I got from Bratton's when compressed is a full one inch, so the motor will not settle in at the midpoint of design. Does anyone know where to get good NOS springs or correct aftermarket ones that have more room to compress? I am pretty sure my old ones are no longer springy enough. Thanks |
09-23-2017, 03:04 PM | #2 |
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Re: front motor mount springs
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09-23-2017, 03:12 PM | #3 |
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Re: front motor mount springs
Thanks. That is what I had read and a good reference.
I am looking for aftermarket springs that actually meet these specs (compressed less than or equal 7/8 inch and so far may have to go NOS and wait for correct ones as the new ones I got are 1 to 1 1/8 inch long compressed so I can't use them. |
09-23-2017, 08:38 PM | #4 |
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Re: front motor mount springs
Can anyone tell me about the rear two motor mounts tightening? I discovered today that the center bolt was loose on both sides. Looked like a castle nut of sorts and that explained why the nut hadn't fallen off. Thus, I tightened both sides up but doing so without knowing if they in fact should be tightened?
Should these be tightened and if so what torque? Thanks. |
09-23-2017, 08:45 PM | #5 | |
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Re: front motor mount springs
Quote:
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. |
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09-23-2017, 08:50 PM | #6 | |
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Re: front motor mount springs
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Quote:
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09-23-2017, 09:52 PM | #7 |
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Re: front motor mount springs
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09-23-2017, 10:03 PM | #8 |
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Re: front motor mount springs
FAM = Float a Motor's. They have one vertical bolt with a rubber biscuit on either side of the mount.
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09-23-2017, 10:07 PM | #9 |
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Re: front motor mount springs
Sounds like the ones I have. Do you just snug them or do you tighten the bold? Thanks.
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09-23-2017, 11:22 PM | #10 |
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Re: front motor mount springs
I installed snyders front motor mount kit and my crank nut lines of dead center to the front crossmember crank hole....
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09-23-2017, 11:22 PM | #11 |
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Re: front motor mount springs
I tightened the Float A Motor Mounts just enough to keep the clutch from chattering. I feel this will give you the softest mount with the least vibration of the engine. I use a fine thread bolt with a self locking nut.
This is the way I do it, others may have a different approach. Chris W. |
09-24-2017, 06:31 AM | #12 | |
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Re: front motor mount springs
Quote:
Now, onto the front mount: I assume that the weight of the engine compresses the springs tight?? Mine look completely compressed. They appear to be new, and so I will need to measure them at least in the compressed mode. Thank you, great group. |
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09-24-2017, 08:12 AM | #13 |
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Re: front motor mount springs
I changed mine to "1955 chevy" type . rubber donut with on bolt thru . been fine for years now
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09-24-2017, 12:55 PM | #14 | |
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Re: front motor mount springs
Quote:
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09-25-2017, 10:13 PM | #15 |
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Join Date: Mar 2012
Location: Mahtomedi, MN
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Re: front motor mount springs
I used the above blueprint and found perfect springs at my local Fleet Farm store. I think I used the bathroom scale to check the weight / length spec. They are much more compressible than the springs the vendors sell, and the engine height is perfect.
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09-25-2017, 11:14 PM | #16 |
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Re: front motor mount springs
Wow! Reading this thread gave me a headache... I think someone needs to start their on thread instead of having two unrelated conversations going on at the same time.
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