Re-occuring problems...
#267343
03/26/09 01:42 PM
03/26/09 01:42 PM
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Joined: Nov 2004
Posts: 8,094 Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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I have two on-going problems that I cant find a permanent fix for..
The first problem is broken motor mounts for the small block Duster.. I've wanted to stay with the rubber motor mounts since the Duster is a street car and is driven all over town.. However I seem to be breaking them too much.
Both mounts were new the last time the motor went into the car, which was about 2 years ago.. 6 months ago, we broke the left side rubber... which I think is actaully polyurathane mount.. I ordered new replacements and installed it.. 2 months later, we broke the right side, so once again, we replaced it. Almost immediately after, we busted up the left side again.
I dont want to go with solid or a motor plate.. Do I have options?
The 2nd pain in the butt problem is the leaky real main seal.
Last time the motor was out, the brand new rear main seal started leaking while on the running stand. We had to swap out 2 seals until we could find one that didnt leak.
About a year ago, it started leaking, so we dropped the pan and replaced it with the motor in the car.. This seemed to solve the problem until last weekend at MATs where it started dripping again.
Is this just a problem I will always deal with or is there a permanent fix for these dam things? and before anyone asks.. yes the oil splash lip thingy is facing forwards towards the motor...
Thanks in advance
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Re: Re-occuring problems...
[Re: Jeepmon]
#267344
03/26/09 02:27 PM
03/26/09 02:27 PM
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Joined: Jan 2003
Posts: 13,369 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
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Do you have a torque strap on the motor? If not, you should put one on. This will help keep the motor from moving excessively and should help your mounts live. Or you could put a solid mount on the driver's side only. Not as harsh as two solid mounts, but will stop the engine from moving. CHIP
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Re-occuring problems...
[Re: an8sec70cuda]
#267345
03/26/09 02:42 PM
03/26/09 02:42 PM
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Anonymous
Unregistered
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Anonymous
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I had the same problem with my stroker when i first put it in,it was ripping the rubber motor mounts in two even with a torque strap..i installed the poly-locs from schumaker and since then no problems,as already mentioned you might want to try a solid on the drivers side and rubber on the pass.,but deffinately get a torque strap,you can make your own easy enought too...
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Re: Re-occuring problems...
[Re: an8sec70cuda]
#267346
03/26/09 03:11 PM
03/26/09 03:11 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Do you have a torque strap on the motor? If not, you should put one on. This will help keep the motor from moving excessively and should help your mounts live. Or you could put a solid mount on the driver's side only. Not as harsh as two solid mounts, but will stop the engine from moving. CHIP
torque strap is 1 sure way... you're making more torque and its going somewhere... either you put it to the drive line or you eat it up in the mounts, a plate or solid mounts sends the torque to the drive line(lacking what goes into the chassis flex). I like rubber mounts but they need to be firmer than a production one to hold the torque, a poly is very stiff and I've seen that they sometimes have a problem bonding them to the steel. As for the seal... check the crank for a burr, also put a pressure gauge on the crank case and see if its getting too much pressure down there(you can mount the port in the back of the valve cover). Have you been giving the edge of the seal a touch of RTV at the cap joint
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Re: Re-occuring problems...
[Re: MR_P_BODY]
#267347
03/26/09 03:44 PM
03/26/09 03:44 PM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Don, Are you still using the stock trans mount? I went to a poly mount in my car and its much stiffer which takes some of the strain off the motor mounts. Though I have the early style trans mount which is different from yours. I would definitely go with a torque strap and see if that helps the mounts live some. As for the leaks, I spent a lot of time assembling my motor and even used more expensive gaskets in hopes I wouldn't have drips but it never fails something isn't going to seal.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Re-occuring problems...
[Re: MoparforLife]
#267350
03/26/09 04:40 PM
03/26/09 04:40 PM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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Don, Schumacher's got the safety mounts that overlap steel in the polymer. Or I've run a hardware store turnbuckle and a few links of chain with a ton of success. Never broke another one after that. Before that, it would rip the mount enough for the Z bar to come off the pivot ball.
on the rear main... I use the rope seals now. They dont leak.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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