KAD32 compressor Question

[Kedger]

Wondering about installing a compressor bypass switch to my boat, so the compressor doesn’t always kick in when I’m in rough seas and can’t get out of the 1600-2400 RPM range

Can anyone walk me through doing this myself? or has anyone documented and posted pics of the process?

 

[jwfrary]

In terms of wiring, interrupting the power to the clutch would do it.

Trouble being that if you do I think you might find your over fueling for the air that’s going in so you will smoke and cause yourself other problems coked up turbo etc

this is just the drawback of that system.

 

[Kedger]

Thanks I figured that running the compressor would eat fuel and cause belt wear and clutch heat. I didn't think about it running rich I guess the injection system will pump out whatever it thinks the engine needs...

 

[superheat6k]

I suggest you ask VolvoPaul, who sometimes frequents the Mobo forum.

 

[KompetentKrew]

@volvopaul should ping him

 

[Kedger]

sorry, how do I ping him? I'm new to this site

 

[volvopaul]

Wondering about installing a compressor bypass switch to my boat, so the compressor doesn’t always kick in when I’m in rough seas and can’t get out of the 1600-2400 RPM range

Can anyone walk me through doing this myself? or has anyone documented and posted pics of the process?

Check the kick down switch on the injection pump as the compressor should kick in at full throttle when revs are inside the switch in rpm parameters.
fuse , could be speed sensor fault or fault in black box , remove the black grommet you can adjust the in and out settings .
no power above 2900 rpm means worn turbo

 

[KompetentKrew]

sorry, how do I ping him? I'm new to this site

My comment should have done so already. If you write someone's username with an @ in front of it - as long as it comes out orange when you post - they should be notified that they were mentioned

 

[Kedger]

@volvopaul

Check the kick down switch on the injection pump as the compressor should kick in at full throttle when revs are inside the switch in rpm parameters.
fuse , could be speed sensor fault or fault in black box , remove the black grommet you can adjust the in and out settings .
no power above 2900 rpm means worn turbo

Thanks Volvopaul, no issues with the compressor or the turbos, I've seen some threads where a person wires up a switch to shut off the compressor when the boat can't get on plane/ or between 1700-2600 RPM where the compressor is usually always on.


I was worried that by running in the range that the compressor kicks in, the belts will wear horribly, fuel will be eaten up and it's noisy as heck.

some members suggest adding in a switch to the clutch, they said that it works well, but the fuel will run rich into the turbos and cause other issues if I bypass the compressor in choppy seas in the 1700-2600RPM range? Thoughts comment's?

 

[Kedger]

@volvopaul

HI VP, I have a KAD32 engine on a Bayliner 245 24' with a DPS drive, the props are I7 series? I cruise at roughly 3750RPM's at about 23 knots. The prop shop hates the I series props and suggests that I switch over the older D series or go to F style. thoughts? They also say tat the numbers I shared are off because they rarely if ever sell that steep of prop especially for a diesel engine??