PIA changing engine mounts this weekend

2000_Black_RT10

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Just to inform anyone ahead of time, what you may encounter..

I bought new engine and trans mount from Mark J., nice mounts, I like that the steel was zinc plated to avoid future corrosion.

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Now off to the task of changing them.. referencing the excellent illustrative guide beforehand. My car is in decent shape, never driven in the rain, first time the mounts were removed.

First problem, the nuts were seized, factory mild steel studs on the mounts with bare steel nuts rusted. Tried the impact wrench, 1/2" breaker bar, then I had to pull out the 3/4" drive ratchet and snapped them off.. (watch your knuckles!).

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Pic of the 3/4" ratchet drive compared to a 1/2" drive.. it's big..

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Second problem, to get to the passenger side bottom mount nut, the fender liner was in the way, it's a SMC panel riveted on the car that does not flex, perhaps I could have drilled off the rivets to remove the panel, but I just cut away some of the fender liner. The nut was so siezed that I would have busted a 1/2" drive u-joint socket extension.

Pic of the cutout on the passenger side, the red line was the original shape. Drivers side was ok.

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I used a rasp bit on the drill, you can't cut the liner with snips otherwise it will crack, because it's a SMC panel (sheet molded compound), which is sort of like fibreglass. Notice there is a clearance notch in the frame, but they forgot to put clearance in the liner, most likely because the liner was riveted on after the engine was installed in the factory. It's dusty trimming SMC, best to use a dust mask and safety glasses because of the sharp fine fibres, even my arms were a bit itchy afterwards..

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Here's a pic showing the cutout clearance and the 3/4" drive.

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Pic of the new mount installed, I used anti-sieze compund on practically everything that I take apart and put back together, luckily I had some spare nuts because the Woodhouse mount kit unfortunately did not provide new nuts.

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Third problem, on both of the aluminum brackets that bolt to the engine block, the factory installed the bolts so when you slide the upper bolt out it hits the exhaust and with a bit of effort I finally got them out, but it would have been so much easier if they changed the direction, going from front to rear as I did when they were reinstalled on both driver and passenger side as shown in the pic. Another problem because the bracket bolts were most likely installed prior to installing the exhaust at the factory.

Driver side, bottom and top bolts are inserted front to rear.

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Passenger side, bottom and top bolts are inserted front to rear.

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That's it.. times like these I do curse a bit... at the design engineers... :mad: :rolaugh:

Cheers,
Mike
 
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Rollin4

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Yeah know what you mean.....I filled a "swear jar" on the design engineers myself a few times.
 

dragon rider

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Great illustration. If I were more mechanically inclined I would have tried it myself. Nice job.
 

Russ M

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Thats nothing try changing them with a couple of turbo's in the way.

Lets just say you need to get a new set of gaskets for the turbo's.
 

Qualitywires.com

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I've changed these out on several vipers. Just did one on a SRT-10 last weekend. Driver's side comes out easy but the passenger side will come out when you rotate the mount and wiggle it out towards the back side. When doing this you can raise the engine a little bit to get clearance and do one side at a time. What also helps is loosing the mounts on both sides allowing the engine to be lifted to do one side.
 

jay01m

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Hey Mike - Sorry you had so much trouble getting those darn things out. I replaced mine several months ago, and it was a PITA raising the motor and getting the mounts out, but fortunately nothing was seized so the bolts unscrewed fairly easily.

Hate to say it, but you may run into another problem you haven't realized yet. Not long after I replaced my motor mounts I went to change the oil, and realized when pulling my filter that my engine settled about 1/2 inch back from where it used to be, and the oil filter wouldn't clear the hole provided underneath the car. I had to loosen the mounts and jack the damn engine up to get it cleared. That was almost more of a PITA than changing the mounts. I attempted to get the engine settled back where it used to be, but not sure if it worked, I'll know next time I change my oil. Just wanted to give you a heads up and have your swear jar handy LOL!

Jason
 

ViperTony

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Hate to say it, but you may run into another problem you haven't realized yet. Not long after I replaced my motor mounts I went to change the oil, and realized when pulling my filter that my engine settled about 1/2 inch back from where it used to be, and the oil filter wouldn't clear the hole provided underneath the car.

Which motor mounts did you install Woodhouse or other? Woodhouse definitely has much beefier (and better) mounts. I have pics showing the differences between the OEM, Woodhouse and Poly mounts in my writeups in the illustrated's section. The poly mounts definitely lowers the engine:

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jay01m

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I bought the polybushings, but height wasn't the issue. The issue was the engine shifting back just enough to cause the oil filter to be obstructed by the frame. Nonetheless, if I continue having trouble with the oil filter, I may try the Woodhouse bushings.
 

ViperTony

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I bought the polybushings, but height wasn't the issue. The issue was the engine shifting back just enough to cause the oil filter to be obstructed by the frame. Nonetheless, if I continue having trouble with the oil filter, I may try the Woodhouse bushings.

Did the polybushing mounts move/pivot? Maybe adjust and tighten them down more? :dunno:
 

Mopar Boy

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Very nice thread Mike. Have considered doing mine and this gives a good idea what is involved!

Side note: The factory ones look ideantical to what holds the 1300 lbs Cummins motors into the Ram trucks from 1989 to 1993. Scary.
 
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97snk

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Great write up, I now am sure that I can't do this in my garage :)
 

EllowViper

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So what did you think the first time you hit the key to start it? Pretty "solid" starter engagement isn't it!! Really a solid feel to how the engine is running...
 
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2000_Black_RT10

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Thanks guys, appreciate all the replies and tips, will see how it feels this weekend. Thought it was a bit silly to Post this, but glad it was of any use.

Cheers,
Mike
 

Steve737

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Hey Mike, I just did mine to, had alot of the same problems. I'm sure you heard the car will vibrate for a while. Mine did for the first hundred miles, now it just feels fast. Good post. Steve
 

white out

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Great Thread, Thanks!
I have a feeling that I will be doing this same mod in the near future.

Nick
 

white out

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I cannot seem to find a price on the Woodhouse mounts, anybody have a general price on them?

Nick
 

DanielR

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I cannot seem to find a price on the Woodhouse mounts, anybody have a general price on them?

Nick

Woodhouse Performance Shop

For anyone planning on doing headers in the future, you may want to wait and do the motor mounts at the same time. It is much easier. Tons of room to work.

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2000_Black_RT10

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So what did you think the first time you hit the key to start it? Pretty "solid" starter engagement isn't it!! Really a solid feel to how the engine is running...

Yes, ran the car today. Engine does feels more connected to the chassis, little vibration at low rpm at stop lights, at low speed when engaging or disengaging the clutch in first gear, otherwise, from 20 mph and up, vibration is not felt. I also noticed that the little bit of bucking that the car had with the new kevlar clutch is gone and I accurately nailed 3rd gear aggressively several times without a problem missing it.

Thanks Woodhouse / Mark J. for the effort to manufacture these mounts. :2tu:

Cheers,
Mike
 
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