[C320-list] New Engine Mounts

[Kirk McCullough]

Maritn I think your on the right track to shift below 1000. I simply drop 
the RPM, select the new gear and quickly power up. It takes a little 
practice. I like to shift around 900 rpm, it shifts smoother there.

Plus I have a new ZF 6 gearbox, which can take a lot more abuse than the 
older Hurth 50's that came on our older boats. The ZF technician noticed the 
Perkins rattle at low RPM but did recommend shifting as low as possible, so 
I do.

Kirk
#124
----- Original Message ----- 
From: "MARTIN and SUSAN RAPHAEL" <mraphael at q.com>
To: <c320-list at catalina320.com>
Sent: Tuesday, July 01, 2008 3:19 PM
Subject: Re: [C320-list] New Engine Mounts


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> > > =