Reply
 
Thread Tools Display Modes
 
Old 07-02-2015, 04:54 PM   #1
Member
 
City: minnesota
Country: usa
Join Date: Nov 2013
Posts: 6
st6.3544m idle speed

hello all
any one have an idea as to what the idle speed is for a perkins st6.3544m engine. workshop books were no help

thanks
kevin
__________________
Advertisement

bkc914 is offline   Reply With Quote
Old 07-02-2015, 05:13 PM   #2
Guru
 
City: Satsuma FL
Country: United States
Vessel Name: No Mo Trawla
Vessel Model: Hurricane SS188
Join Date: Jul 2014
Posts: 1,678
Quote:
Originally Posted by bkc914 View Post
any one have an idea as to what the idle speed is for a perkins st6.3544m engine. workshop books were no help
We have a hydraulic stern thruster so we idle at 800RPMs to prevent stalls. Without the hydraulics, 650-700RPMs should be sufficient.
__________________

Donsan is offline   Reply With Quote
Old 07-02-2015, 06:06 PM   #3
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
Quote:
Originally Posted by bkc914 View Post
hello all
any one have an idea as to what the idle speed is for a perkins st6.3544m engine. workshop books were no help

thanks
kevin
It's on page 58 in my Perkins engine manual. Says "Adjust idle speed to 625 Rev/min". . . . . . "but idle speed may vary based on application."

I have mine set at 600 rpm's, (because we're often fishing and a little lower idle speed is better for that purpose.) But I usually idle the throttles up to 800 rpm's for docking. Makes the boat control response a little quicker and it's still within the shift RPM spec's for the BW Velvet Drive Trans.
__________________
Larry B
Careful . . .I Have a Generator and I'm not afraid to use it !
Edelweiss is offline   Reply With Quote
Old 07-02-2015, 06:18 PM   #4
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,887
That engine can idle quite low and usually not stall, even down to around 500rpm. Set it where you like it. Most are between 600 and 700. Too low and it stalls on shift and shakes. Too high and it bangs into gear.
Ski in NC is offline   Reply With Quote
Old 07-03-2015, 06:45 AM   #5
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,525
The key is to not have the idle so low that shifting does not stall the engine.

Not a big problem with small propellers but a heavy shaft and big prop have lots of momentum to start or reverse.

Also some mfg will balance the engine so it only shakes at what they would considerba non operating RPM, very low idle.
FF is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 01:43 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012