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New engine mounts and vibration

 
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Old 07-11-2015, 08:34 PM
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New engine mounts and vibration

Well I just changed all the engine mounts. Front is from Honda and others are all after market.

I torqued them in the right sequence multiple times and the vibration is pretty noticeable.

Do engine mounts require breaking in?
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Old 07-11-2015, 09:38 PM
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Re: New engine mounts and vibration

I should have mentioned that the car sat for two years with less than half a tank of gas. I think I'll drain as much out as I can and add new gas just in case the gas is the issue.
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Old 07-13-2015, 02:44 PM
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Re: New engine mounts and vibration

Yeah, sounds like you have a rough idle situation going on... Draining the old gas and adding new will probably help the situation, and a bottle of Fuel Stabilizer and/or Fuel Injection System Treatment wouldn't hurt either. Let us know what happens!
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Old 07-13-2015, 03:18 PM
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Re: New engine mounts and vibration

Yeah, no...there is no break-in time required for motor mounts. Is the engine carb'd or fuel injected? I've seen carb'd cars sit for less time and not run right. Fuel injected engines seem to fare better because the fuel system is pressurized, but gas still can go bad. Drain the old fuel and add fresh. Luckily there is a drain plug on the fuel tank to make it easier for you to do this. I would also be concerned about the condition of the fuel tank if it sat for that long less than half full. I'm sure there was lots of condensation over the 2+ years it sat, and there is probably some corrosion in there.
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Old 07-13-2015, 03:33 PM
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Re: New engine mounts and vibration

What lead you to change all of your motor mounts at once?

You say all but front are aftermarket.
As in part store kind that mimic the oem kind?
Or some kind of 'racing' mounts made with a harder compound?
They do have a break in period where you go from brain jar-ing to tolerable, but still your car feel weird until you get used to it.

Kudos on using the correct sequence.
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welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
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I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

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Old 07-13-2015, 03:54 PM
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Re: New engine mounts and vibration

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Originally Posted by bykfixer View Post
What lead you to change all of your motor mounts at once?

You say all but front are aftermarket.
As in part store kind that mimic the oem kind?
Or some kind of 'racing' mounts made with a harder compound?
They do have a break in period where you go from brain jar-ing to tolerable, but still your car feel weird until you get used to it.

Kudos on using the correct sequence.
I was assuming the other mounts were OEM mounts. For some reason I didn't even consider that he might have gone with stiffer "racing" mounts which can require break-in. Thanks for pointing that out.
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Old 07-13-2015, 06:24 PM
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Re: New engine mounts and vibration

I was too mike...but some have bought innovative 75's etc and an oem up front to soak up excess vibrations.

Lest we not forget hockey puck motor mounts... That's what I like to refer to those above 75 durometer...not quite as hard as those modern skateboard wheels at 95-101 durometer.
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welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

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Old 07-13-2015, 07:23 PM
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Re: New engine mounts and vibration

Okay, the front mount was broken and at some point the engine rotated fwd and the belt cut into the line so I knew I had to replace that mount.

I looked at the others and thought given their age and the slight cracking I'd replace them. In hindsight maybe this wasn't such a good idea.

The mounts the rear and left mount are made by Anchor and the MT mount is Westar. They look just like OEM, but now I'm reading that the rubber is stiffer. Some say these mounts soften with use.

The car is fuel injected and the engine started right up. The engine seems to be running smooth when staring next to it, but when you start her and the RPMs shoot up the vibration is bad. When she drops below 1000RPM. It's somewhat smooth. Rev the engine and the mirrors and dash rattle like crazy.

I will drain the fuel first by disconnecting the line to the fuel rail and turning the key on. The he drain plug scares me as it may be messy and leak afterwards.

What a pain!
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Old 07-13-2015, 07:40 PM
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Re: New engine mounts and vibration

Valid reasons to switch out those motor mounts. And they may soften with time. Those Honda ones are some d@m expensive, it's an easy decision to try aftermarket types.

Definitely swap out that fuel.
But check your plugs, wires, cap n rotor etc too (if you haven't already)

I did a windo-weld to a cracked front mount, in essence making it a solid one and my wife refused to get in the car at first due to all the rattling and buzzing after. But after a few hours it settled on down. Still gonna go back oem at some point though.
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Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 07-13-2015, 07:42 PM
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Re: New engine mounts and vibration

I have the 3M Window Weld, so that is always an option.

Did fill yours using multiple layers allowing each one to cure?
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Old 07-14-2015, 08:39 AM
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Re: New engine mounts and vibration

No.
As in did not use multiple layers and DON'T DEW EET!!
Think ya got vibrations now?
I used one solid layer in essence. A thick glob at first and every so often add some more until the mount was full. Then cured for like a week if memory serves.


^^ zip ties were removed first day
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 07-14-2015 at 08:43 AM.
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Old 07-14-2015, 10:14 AM
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Re: New engine mounts and vibration

I used window weld on the rear mount on my lude, the rest of the mounts were "normal" stock mounts, and in good condition. I was just trying to avoid spending the money on a new mount. I can't say that I noticed much difference with just the one mount filled. Not sure I would fill all four, but I might do a half fill. I was gonna experiment with junkyard mounts, and differing amounts of filling, if I ever had to replace any of the other mounts. But now that I don't have a 3rd gen anymore there's not much chance of that unless my son wants to try.
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Old 07-17-2015, 08:47 PM
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Re: New engine mounts and vibration

Good call on the gas!

Still in the process of draining it, but it is the color of tea. Running out of containers and the fuel light is on.

Will up date.
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Old 07-19-2015, 07:02 PM
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Re: New engine mounts and vibration

So I drained all the gas and the vibration was still there with new gas.

Swapped out the distributor with a new one and it made no difference.

Changed the rear mount putting the old one back in and the vibration reduced, but it was minimal.

Finally realized only the driver's side mirror was shaking so I swapped out the left mount and problem solved!
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Old 07-23-2015, 12:15 PM
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Re: New engine mounts and vibration

I would like a bit of help on this as I'm confused as to why the mount I received is supposed to be for my car, when it's not the right one.

Look at the link.

The mount on the top left is the one I received and identified by Westar as the right mount. The mount on the bottom right is for an 89 Prelude, which matches mine.

Any idea why this would be? My car was manufactured in 87, but an 88 model.

https://onedrive.live.com/?cid=b7559...Esu3IF9xfvrSrs
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Old 07-23-2015, 01:45 PM
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Re: New engine mounts and vibration

Your link doesn't work for me. Probably because it's a secure link (notice the https).
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Old 07-23-2015, 02:20 PM
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Re: New engine mounts and vibration

This work: https://onedrive.live.com/redir?resi...thint=album%2c
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Old 07-23-2015, 02:23 PM
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Re: New engine mounts and vibration

That one doesn't work for me either.
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Old 07-23-2015, 03:04 PM
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Re: New engine mounts and vibration

The one on the bottom left is the Front Motor mount... Up near the radiator. It has the 9172 on it.

The one on the bottom right is the correct Driver Side Mount. It's actually listed as a Manual Transmission The correct replacement P/N's for it are A4501 or 8374.
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Old 07-23-2015, 03:32 PM
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Re: New engine mounts and vibration

Driver's side mount that fits, but vibrates.





Mount like mine that they should have listed as the correct one.





OEM





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