[C320-list] New Engine Mounts

[Pat Moriarty]

Hey with my folding prop there is no load at time I engage gear but 
there is when I reverse direction and that is when I get the knocks

Pat #130

At 05:19 PM 7/1/2008, you wrote:
>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> > >

Pat Moriarty
PSI Urethanes Inc
PH: 800-888-5156  Fax: 512-837-8733
Please visit our web site at
www.psiurethanes.com