Diesel Swaps Diesel engines

Project: 86 p/u sas/om617 diesel swap

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Old 04-14-2014, 05:30 PM
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That thing is bad!
Old 04-14-2014, 06:01 PM
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It reminds me of the gun weilding dudes rig on that movie tremors2!! Did you get the canvas for the top?? Thats pretty cool Joe!! What in tarnation are you gonna do with that!?
Old 04-28-2014, 10:10 AM
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Finally got the yota on the dyno at the Nebraska Diesel Show. Most people there couldn't tell it was a diesel.... Not sure if the dyno was set up right; I was expecting about 130 hp and 200 lb*ft. Ended up with 83hp and 147 lb*ft. Won a sweet trophy, though.

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Old 04-28-2014, 10:53 PM
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Why no second gear pull it has more omph than 3rd or 4th just not as tall
Old 04-29-2014, 07:38 AM
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You generally do it in direct drive (i.e. 4th gear). I will be dynoing again on a loaded dyno. Just glad to finally be able to see my power band. Look how flat that HP is!
Old 05-05-2014, 08:23 PM
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Nice to finally see a dyno sheet on one of our engines. Thanks for sharing that Joe.

Last edited by waltt; 05-05-2014 at 08:29 PM.
Old 05-07-2014, 12:38 PM
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Just a question but why did you go with 4.88 over 5.29? seams your loosing power with the heavy toyo tires to begin with and 5.29 should be used with tires over 35".
Old 05-07-2014, 05:36 PM
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Originally Posted by cheap-ass
Just a question but why did you go with 4.88 over 5.29? seams your loosing power with the heavy toyo tires to begin with and 5.29 should be used with tires over 35".
As a pioneer on this project and only being able to off of other peoples' opinions, the gear ratio calculation said I should have gone with something like a 4.56. I compensated a little and went even lower with 4.88. Since actually owning a running OM617 pickup on 37's, I've said multiple times that you should go 5.29's or even better 5.71's (if you can find them).
Old 05-08-2014, 02:55 PM
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Nice Trophy!!!
Old 05-14-2014, 08:46 AM
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When the funds allow, I'm going to be trying meth on both the Toyota and the deuce. They both have tons of potential with as much coal as they roll just cruising around unloaded. I'd like to hear from other people trying meth on their OM617's, but I suppose I'll have to pioneer that project, as well. One thing I don't understand is why the OM617 sucks to start so much with it's 21.5:1 compression ratio; even at 90 degrees I have to use glow plugs. My M35A2 deuce and half has a 22:1 compression ratio and starts on the first crank over even at 20 degrees without any aid. Why can't the OM617 start that easy??
Old 05-14-2014, 08:56 AM
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Originally Posted by pyrojoe22
... My M35A2 deuce and half has a 22:1 compression ratio and starts on the first crank over even at 20 degrees without any aid. Why can't the OM617 start that easy??

The multifuel engine handles fuel delivery slightly differently than a straight diesel does. The high compression helps, but the pre-combusion chamber is designed to accommodate hotter fuels such as gasoline. I can't explain the physics, but that makes it start easier on diesel as well.
Old 05-18-2014, 03:23 PM
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whats your pump timing if the pump is timed too much starting gets harder once my engine is warm it starts without glow plugs no problem.
Old 05-19-2014, 11:43 AM
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Very cool build!
Old 05-19-2014, 05:08 PM
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what made you decide on the om617? I've been throwing this idea around for months now but I'd rather go with a kubota or some other type of industrial diesel. a high speed td preferably, they're even more bullet proof (most have timing gears) and get better mpg if set up properly. Not that im saying the merc's dont, just food for thought.
Old 06-05-2014, 03:46 AM
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Pyro, are you satisfied with your swap? I been on and off for the last few years about doing mine for my 85 4runner, but I found a low mile cleanest om I have ever seen for 400 bucks running and now I really want it. Just worried if it is worth it. I am a diesel enthusiast and I just wondering if you think you could tow 2-3 jet skis comfortably or a small camper.
Old 06-24-2014, 08:42 AM
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What kind of filter did you put in the tank when you removed the fuel pump?
Old 07-08-2014, 06:56 PM
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Any updates Joe???
Old 07-24-2014, 02:52 PM
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Originally Posted by pyrojoe22
Ended up with 83hp and 147 lb*ft.
Not quite up to stock power, should be around 95hp/160tq to the wheels.

Here is my last run:

http://mercedesforum.com/forum/diese...82-300d-46098/
2012/08/04
ATS diesel performance
1982 300D
HE221W turbo, A/W intercooler, W/M injection, straight pipe exhaust
147.5hp/220tq




Originally Posted by pyrojoe22
I'd like to hear from other people trying meth on their OM617's, but I suppose I'll have to pioneer that project
A few years too late for that.
http://mercedesforum.com/forum/diese...jection-49176/
W/M injection is great. It keeps the engine carbon-free and adds around 13hp. Does nothing to lower EGTs on IDI diesels though.
Do not use more than 35% methanol or you will get detonation!
Old 08-22-2014, 07:07 AM
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Wow! Sorry for the delayed response; I wasn't getting my notifications for replies.

@Cheap - I've mentioned in here several times. I started with my timing at 24 BTDC and nwo it's at 27 BTDC.

@Rowdy and Darian, I am not fully satisfied. After seeing a truck with a VW 1.9 in it, I wish I would have gone that route. That VW had more power and got better mileage, while fitting and allowing retention of the A/C. The OM617, when properly geared, will have no problem towing. I've hauled a 4wheeler in the bed (500 lbs) and 2 dirt bikes on a trailer (1100 gtw) no problem going 75-80 down the interstate.

@Draggin - Go thru my thread to the fuel tank part. All the info is there... Remove fuel neck restrictor, hook up fuel lines to motor, done. My fuel tank only had a fuel level sensor.
Old 09-01-2014, 12:26 PM
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Been slowly going thru your thread and is something I would like to do someday in the future. Subscribed.


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