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Bolens Ht20d repower


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#1 pulltilbroke OFFLINE  

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Posted December 17, 2015 - 11:01 PM

So as some of you know I'm kinda into diesel stuff. Any who just got my 20d going a few weeks ago and it's been having issues sticking a pintle in one of the injectors and it has some governor issue to where it won't spin up very fast looked at everything and it's all kosher so instead of messing with an engine that parts are not available for I think I'll take the lombardini from the 920 allis that I just started putting back together and jam it in the big bolens. I know for a fact what the lombardini is capable of after some fuel adjustments so I think it would be a good match. The 920 is also pretty rough and might have hydrostat issues.

The lombardini is actually just a bit smaller physically so there should be plenty of room. Both engines are also laid out very similar, and I could intermingle both engine cradles and make it look factory.

One of my questions is where can a guy get a bolt on stub shaft to hook to the drive shaft.

Another is am I crazy for "chopping" up two factory diesel gt's

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#2 Cvans ONLINE  

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Posted December 18, 2015 - 01:21 AM

Another is am I crazy for "chopping" up two factory diesel gt's

 

In this situation you are the only one who can answer that question. 

If the 920 is in poor condition with a good engine you might as well use the engine in something.

Do you have the time, money, and ability to complete the project?

Will you use the completed tractor enough to make it worth while? What your contemplating doing is probably not going to increase the value for resale but should make it much more usable for yourself.

If you can take two unusable tractors and make one usable one out of it, that's certainly something to consider.

Sorry I can't  help?  :hitting_self_roller:


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#3 Eric OFFLINE  

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Posted December 18, 2015 - 02:05 AM

My only advice would be that if you are comfortable with your ability to successfully do the swap and the end result is a tractor you would be proud to own then get out the tools and start the work! Any job that will bring frustration and happiness is worth doing as long as it is something you can look forward to completing. Just lay out a plan and go for it, I am positive that many of us will follow your progress diligently and offer moral support when needed! Good luck and hope you have a great Christmas!
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#4 pulltilbroke OFFLINE  

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Posted December 18, 2015 - 03:07 AM

This won't be my 1st swap. Last winter I swapped in a acme motori adn43w in to my g14 bolens, had to stretch the frame 7" and fab a plate to tie everything together.

I'll have to think about this swap. I did a little research and came up with every pn# I need for the injection system on this ducati.

Here's some pics of my swapped tube frame. I still got a few things to tidy up on it but she pulled like a beast this year.

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#5 boyscout862 OFFLINE  

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Posted December 18, 2015 - 06:24 AM

Many years ago we fixed an injector on my AC shoveldozer. The manual had instructions on how to recondition it. Take it out and apart. Clean it and then lap the needle using a paste made of a powder cleanser and kero. Cleaned it all again and installed it. It worked for years after. Maybe try something like that before all of the work of swapping. Good Luck, Rick

#6 pulltilbroke OFFLINE  

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Posted December 18, 2015 - 08:38 AM

Actually one of the guys I get my injection parts from said to use lard, said that works best.
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#7 OldBuzzard ONLINE  

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Posted December 18, 2015 - 02:08 PM

By "it won't spin up very fast" do you mean throttle response, or it doesn't get up to rated RPM?

 

If it's for former, and it does get to rated RPM and holds it under load, that may be the nature of the beast.  I know that my 20D's throttle response is a lot slower than the HDT's.

 

I think I would exhaust all possibilities before scrapping it.


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#8 pulltilbroke OFFLINE  

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Posted December 18, 2015 - 04:26 PM

Actually both it doesn't get to rated rpm and it takes a while to get it up to its current max rpm. In high range the motor will slow down to what seems like 1/4 throttle.
After about 10 conversations with my local injection shop and hours of cross referencing I believe we have found the correct nozzles for an ht22. Probably gonna get those and look at the governor setup again and see if we can't get it dialed in.

Fwiw I did pull the rack access plate off the the motor and by operating the rack with my hand I can get to rated rpm but it's kinda popping and smoking white,when I do injectors on it I'll put a thinner sealing washer in so it will effectively advance the timing. That a common trick on the Cummins 12v motors I'm usually making go fast.
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#9 1967bolens collector OFFLINE  

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Posted January 18, 2016 - 08:56 PM

What happened to the old one im lookin for a parts engine

#10 Cvans ONLINE  

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Posted January 18, 2016 - 11:06 PM

How easy does it start? Is compression up to specs?



#11 1967bolens collector OFFLINE  

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Posted January 19, 2016 - 11:40 AM

Well if u want so sell the engine pm me I'm looking for a parts motor for my 20D

#12 skyrydr2 OFFLINE  

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Posted January 29, 2016 - 06:06 AM

By the sounds of it, its running lean, the white smoke tell you so.

#13 skyrydr2 OFFLINE  

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Posted January 29, 2016 - 11:28 AM

,when I do injectors on it I'll put a thinner sealing washer in so it will effectively advance the timing. That a common trick on the Cummins 12v motors I'm usually making go fast.


Putting a thin washer or copper seal in your case, does NOT alter timing, only alters spray pattern tightening it up so you CAN advance the timing more.

#14 pulltilbroke OFFLINE  

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Posted February 22, 2016 - 06:32 PM

So, just ordered new nozzles for the 20d hopefully that fixed my issues.

#15 Utah Smitty OFFLINE  

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Posted June 04, 2016 - 12:39 AM

Pulltillbroke...

 

I know this is a late post to this thread, but I wondered if you could post some pictures of your Bolens LF's engine, and how the drive shaft connects to it... it appears they had to move the firewall back to accomodate the extra length of the engine. 

 

Anyway, additional pictures and a status on your decision to repower or not would be wonderful...

 

Smitty






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