[C320-list] New Engine Mounts

[MARTIN and SUSAN RAPHAEL]

One thing I worry about in this method -- I believe it is pretty hard on the transmission to shift at higher RPMs.  My thought was to go to idle only to shift, and then bring the RPMs back up a bit to get away from the vibration.  For that reason I am hesitant to "lock in" the higher RPM.  Am I worrying too much?
Martin Raphael
Rhapsody #108



> From: jsever1 at cox.net> To: C320-List at Catalina320.com> Date: Tue, 1 Jul 2008 17:40:14 -0400> Subject: Re: [C320-list] New Engine Mounts> > My M30 did the same thing. I did adjust the cable so it wouldn't go below > about 1K and no problems since then.> > Joe Sever> Cynjo (148)> Norfolk, VA> ----- Original Message ----- > From: "warren updike" <wupdike at hotmail.com>> To: <c320-list at lists.catalina320.com>> Sent: Sunday, June 29, 2008 10:06 PM> Subject: Re: [C320-list] New Engine Mounts> > > > Martin, I too have the M30, and it vibrates to beat the band below 1k rpm.> > The diesel mechanic from whom I took a maintenance course said that's > > common> > with the small diesel engines. His advice was to not run it where it> > vibrates. I've even thought of adjusting the cable so it won't go below > > 1K.> >> > You didn't say if the vibration was only at very low rpms. Of course, if > > you> > have that kind of vibration above 1200 rpm I would think that indicates a> > problem to be addressed.> >> > In spite of my low rpm vibration, above 1k the engine runs like a dream. > > I> > like to cruise at 2700-2800 rpm and do so for hours when necessary with no> > problems.> >> > I'm interested in the outcome and would appreciate your letting me know > > how> > it is resolved.> >> >> > Warren & Pattie Updke> > Catalina 320, #62, "Warr De Mar"> > Middle River, Chesapeake Bay> >> >> >> >> > -----Original Message-----> > I just replaced my non-stock engine mounts with the stock Perkins mounts > > per> > the thread below. To my great distress, the engine now vibrates wildly, > > to> > the point that the shaft bounces against the shaft tunnel when in gear. I> > had hoped that the softer stock mounts would solve a long-lasting > > vibration> > and noise issue I have been experiencing. Now my mechanic says the real> > culprit may be in the valves and they will be checking that out tomorrow.> > He says he has encountered 2 other Perkins that have serious valve rocker> > wear, and that this can cause the vibration. Have any of you heard of > > this> > problem or experienced it yourselves? Right now I'm feeling rather > > foolish> > for having invested a huge amount of money in new mounts when those may > > not> > have been the culprit. BTW, mine is a 94 Perkins M30. So let this be a> > caution before blindly switching out motor mounts. I may have to just go> > back to the old mounts and live with the annoying but tolerable vibration.> > Martin Raphael> > Rhapsody #108> > >