Re-occuring problems...

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

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

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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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

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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