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#1 polarisdiesel OFFLINE  

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Posted March 18, 2016 - 12:08 PM

Hello I'm new here, I've been reading on these forms for awhile now and there's lots of good knowledge here.
I have a 2013 pilaris ranger diesel that has a 3tmn72 yanmar in it. I have a gt12 turbo full cut delivery valves the fuel screw maxed out throttle linkage mod. She free revs to 5k rpm and makes 32psi of boost. It runs very strong but I'm worried it's a little much for a normally n/a engine. I was wondering if anyone has one running the same psi and what mods do you have. I don't want to blow this lil guy up. I've heard their tough but just how tough.

#2 Diesel1050 OFFLINE  

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Posted March 18, 2016 - 12:41 PM

I'd think so! Maybe 10-15 lbs. My 2006 6.0 Powerstroke V-8 turbo diesel puts out 20lbs and that's enough to blow the hose off (Double clamped!) I'd be worried about damaging the engine at that much boost. EGT's must be through the roof.

#3 polarisdiesel OFFLINE  

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Posted March 18, 2016 - 01:01 PM

My egts peak at 1400deg. I've never held those boost levels for long. Just a few seconds at a time. It's a trail/mud bike so no need to floor board it much.

#4 Diesel1050 OFFLINE  

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Posted March 18, 2016 - 03:05 PM

Holy cow! 1,400 is pretty high! I'd be careful going that high.....Yanmars are bulletproof, but they still can melt!
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#5 JDBrian OFFLINE  

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Posted March 18, 2016 - 03:51 PM

I'd be worried about crankcase pressure as well with that much boost. If the PCV can't deal with the extra volume/pressure of blow by gases you could end up blowing out seals.  What kind of HP do you figure you are getting? Torque must be through the roof at mid rpms. 



#6 polarisdiesel OFFLINE  

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Posted March 18, 2016 - 05:51 PM

I have the crank case vent ran back into the intake pre turbo to help draw a little vacuum. And I know on big motors 1400 is about the highest you wanna go foe a DD. and mine also isn't innercooled which I know would help. Like I said it doesn't see high boost but for a couple of seconds at a time. I know factor it had 24hp and some where mid 40 on the foot pounds. I'd say I've doubled it at least. It's hell on the drive line and it has 36" bkt's tractor tires on it which doesn't help

#7 Diesel1050 OFFLINE  

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Posted March 18, 2016 - 07:16 PM

Got any pictures?

#8 polarisdiesel OFFLINE  

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Posted March 18, 2016 - 07:22 PM

These are the only two I have. I need to take some more

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#9 crittersf1 OFFLINE  

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Posted March 19, 2016 - 08:09 AM

Time bomb



#10 Diesel1050 OFFLINE  

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Posted March 19, 2016 - 08:51 AM

Even though that thing is putting out too much boost, that is SICK!

#11 Cvans ONLINE  

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Posted March 19, 2016 - 01:07 PM

That's a nice looking outfit. Comes with a box on the back so you have a place to put the pieces.  :smilewink:

I'd be VERY careful when stuffing an engine like that. Just scares me thinking about it. 


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#12 Dieselcubmike OFFLINE  

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Posted March 19, 2016 - 03:13 PM

Where shall I begin. Okay so you basically have a 22hp motor with a little bit of fuel and a very small turbo. My question is, do you have a boost gauge to verify that kind of boost pressure? My kubota in my diesel puller only gets up to 30 pounds when under a full load. Normally you never see those kinds of egts on a stock motor so I would be a little concerned. 1500-1600 is the danger zone. Once your past 1600 your guaranteed to melt your pistons and damage your rods. You just might have a ticking time bomb on your hands. For your turbo, do you have the waste gate shut off? if so how do you have it off? Your putting a lot of stress on that motor. Diesels do not require a lot of compression since they are already high compression engines. Without decompressing your pistons you may end up turning what you have into a grenade.


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#13 skyrydr2 ONLINE  

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Posted March 19, 2016 - 05:04 PM

Gad zukes!! 33 psi of boost on stock pistons and rods are going somewhere to fail! Also I would be scared of the flywheel going bang
If you lower boost to 20 psi max it should be fine with minor pulls to full boost. I would dial back the rpms too to 4500 max

#14 WNYTractorTinkerer ONLINE  

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Posted March 19, 2016 - 05:47 PM

I'm picturing a busted axle or puked tranny in your future!   :(



#15 DaveBb OFFLINE  

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Posted March 19, 2016 - 07:19 PM

most of the small diesel pullers run upwards of 30 boost but they use water injection to help keep temps down. That being said a pull only last around 20 to 30 seconds and then its shut down. Running a rig like yours for long periods of time is sure to do damage and the parts for any of these little diesels are crazy expensive. At my work we have a Gator D855 that has been running up to 15 psi at around 4500 rpm. Never checked the EGT but it has been working hard for about 3 years now. 






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