prothane vs. vert motormounts - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 28 Old 09-29-2009, 11:08 AM Thread Starter
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prothane vs. vert motormounts

opinions? fun street car, stock motor for now, would like to use them when i build my 331. 93 vert mounts move the motor lower? prothane i wouldnt mind either, but some say they dont install right. the prothane ones would be coming from maximum. wheres a good place to get the vert ones, rock auto, advance? they all the same quality wise?

see if you look them up at advance the coupe and vert have the same part numbers. where would i find a true vert motor mount if i decided to do those over prothane?

and rock auto for the right mount says "Front Right Convertible Only
Front Right Sedan, Hatchback; After 2/20/92" when you look up a 93 gt

did they change the mounts in 92? this whole ordeal with calipers and such was one thing now these part stores are really confusing me.


1990 GT hatch 5 speed

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post #2 of 28 Old 09-29-2009, 12:43 PM
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I believe the Energy Suspension pieces are the same height as convertible mounts. And there are a couple sets in the FS section right now for < $100.

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post #3 of 28 Old 09-29-2009, 02:30 PM
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Get the Energy Suspension ones. The factory changed to all "convertible" style mounts some time in 90 or 91. If you already have them, the Energy ones won't raise the engine significantly. If you don't already have them, the Energy ones will lower it slightly.
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post #4 of 28 Old 09-29-2009, 03:52 PM Thread Starter
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fill my fan hit my shroud? i have a 90, so im guessing i have the taller ones. i had to clearance my shroud some thats casue my stock motor mounts are in terrible shape, but am i going to have to clearance it more?

1990 GT hatch 5 speed
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post #5 of 28 Old 09-29-2009, 04:29 PM
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Do you have a picture of the mounts that are on the car?
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post #6 of 28 Old 09-29-2009, 09:36 PM Thread Starter
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i can get one, im telling you though they are real good and shot. can you tell the height of them from looking? its an early 90 (4-90) and i had to dremel out the bottom of my shroud cause the fan was hitting, just never occured to me it was my motor mounts. ill get some pics up soon

1990 GT hatch 5 speed
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post #7 of 28 Old 09-29-2009, 10:54 PM
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I have the Pro-Thane mounts, w/ a QA-1 KM and i have like a hair's clearance with my fan shroud, also ever since i installed them my shifter bezel won't snap down the whole way. I've never had that problem before with a Pro 5.0 So it's the motor mounts that are to blame, Or is it the Pro-thane tranny mount? Definitely going to go with the ES motor mounts, should i get there trans mount as well?
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post #8 of 28 Old 09-30-2009, 09:45 AM Thread Starter
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i was going to do the prothane trans mount too. anyone used that? im pretty sure es are the motormounts im gonna use

1990 GT hatch 5 speed
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post #9 of 28 Old 09-30-2009, 09:56 AM
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Quote:
Originally Posted by fivespeedsteed View Post
i can get one, im telling you though they are real good and shot. can you tell the height of them from looking? its an early 90 (4-90) and i had to dremel out the bottom of my shroud cause the fan was hitting, just never occured to me it was my motor mounts. ill get some pics up soon
It's not the height I'm interested in. The two types of mounts are completely different and can easily be differentiated just by looking at them.
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post #10 of 28 Old 09-30-2009, 09:57 AM Thread Starter
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not easy to get a good shot of them but from underneath when i was under there the other day they look terrible. the other one i cant get to from the top but its worse than that one.


1990 GT hatch 5 speed
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post #11 of 28 Old 09-30-2009, 09:57 AM
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I never went with a poly trans mount, and I don't miss it. Especially since I've seen several people complain about driveline vibes they didn't get until they switched to one.
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post #12 of 28 Old 09-30-2009, 09:58 AM Thread Starter
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im pretty sure thats the taller kind isnt it? what kind of trans mount do you recommend then just a replacement one?

1990 GT hatch 5 speed
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post #13 of 28 Old 09-30-2009, 09:59 AM
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The "hardtop" style is pretty much just a biscuit between two pieces of metal, and if the biscuit fails, the mount can completely separate. The "convertible" style is a captured design, where the two pieces of metal actually interlock with rubber in between them, so it's virtually impossible for them to come completely apart.
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post #14 of 28 Old 09-30-2009, 10:07 AM Thread Starter
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so ive got the hardtop kind right?

1990 GT hatch 5 speed
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post #15 of 28 Old 09-30-2009, 10:14 AM
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I can't tell from that picture.
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post #16 of 28 Old 09-30-2009, 10:29 AM Thread Starter
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so what trans mount then, just a rockauto one ? im gonna go with the es mounts as they seem to be the best from what im hearing. if i have to clearance my fan more thats fine, id like my engine to be lower.

1990 GT hatch 5 speed

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post #17 of 28 Old 09-30-2009, 12:16 PM
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definitely don't get prothane then, anybody wanna buy my prothanes'?? So i can get some energy suspension ones?
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post #18 of 28 Old 09-30-2009, 01:56 PM Thread Starter
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for motor mounts or trans mount? ill buy your steering shaft though. if you have a prothane trans mount ill take it too.

1990 GT hatch 5 speed

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post #19 of 28 Old 09-30-2009, 02:07 PM
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Quote:
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so ive got the hardtop kind right?
From the picture you posted I am 99% sure that you have the hardtop engine mounts. It was in '91 or later that Ford wised up and used the stronger convertible mount in all the V8 cars.

FWIW: I have had the Energy engine mounts and trans mount installed in my '88 for at least 5 years and have been very happy with them. My stock fan also lines up dead-nuts in the center of the fan shroud. Before the ES mounts I was using the convertible style from the parts store, the brand was Anchor if I recall correct. I had to replace the RH engine mount two times under warranty. I don't know if it was a quality issue or... ?

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post #20 of 28 Old 09-30-2009, 02:21 PM Thread Starter
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so youve got an energy trans mount? and you like that? mm recommends prothane for that one. any big differences?

1990 GT hatch 5 speed
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post #21 of 28 Old 09-30-2009, 02:39 PM
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Quote:
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so youve got an energy trans mount? and you like that? mm recommends prothane for that one. any big differences?
I have nothing negative to report about the trans mount. It's in there doing it's job and doesn't do anything out of the ordinary. The trans isn't to high or low and I don't notice any extra drivetrain noise. I also have Energy bushings in the trans cross member.

Why did Maximum recommend Prothane over Energy? (Does it have anything to do with the fact that they sell Prothane?)

Dennis Lacy - 1987 Mustang GT
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post #22 of 28 Old 09-30-2009, 02:47 PM
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I use the prothane trans mount and I like it, it is real solid... but I do feel a bit more vibrations than stock... but nothing to complain too much about.

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post #23 of 28 Old 09-30-2009, 03:57 PM
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I'll def. save the shaft for you once i get my new setup. I think what we want to know is, is there a difference in height between the PT and ES trans. mounts. I think i might just get the set of ES stuff, so it matches. I like the urethane mounts, get the crossmember ones too. they really tighten everything up and make the whole center of the car feel that much better.
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post #24 of 28 Old 09-30-2009, 06:10 PM Thread Starter
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maximum sells everything prothane, but they said they dont sell prothane engine mounts becasue they dont sit right, energy does the mounts better so mm recomends energy over prothane for engine mounts only.

1990 GT hatch 5 speed
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post #25 of 28 Old 09-30-2009, 07:06 PM
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then i wonder why my shifter bezel won't fit. it hits the pro 5.0 and only half of it snaps down. Is it the motor mounts or the tranny mount that is the culprit?
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post #26 of 28 Old 09-30-2009, 09:27 PM Thread Starter
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yeah cause you probably have the 92-93 mounts and you tryed to put prothane ones on there that raise the motor up

1990 GT hatch 5 speed
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post #27 of 28 Old 09-30-2009, 11:21 PM
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my car is an 89' w/ QA-1 K-member and prothane mounts
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post #28 of 28 Old 10-01-2009, 03:53 AM
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If you install the polyurethane transmission mount, leave the stock rubber crossmember to frame bushings in place. Changing the crossmember bushings to polyurethane adds quite a bit of resonances to the floorpan. Changing the transmission mount itself, stops most of the shifter rotation.

The only trick during installation is this: The bolts used in the transmission mount are standard threads. The OEM mount uses metric fasteners that are just slightly smaller diameter. When you take the stock mount out, make sure to take a large flat file and run it up and down both sides of each slot in the transmission crossmember. If you don't do this, the slightly larger fasteners on the polyurethane mount can bind up in the slot making installation very difficult. Sometimes, the area of the slot right where the two mounting bolts are located gets crushed from overtightening and the slot is actually narrower at that point. This is usually visible. You will need to file the most at this point in the slots.

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