Looks like I need a new motor. Bj73 3b. (1 Viewer)

[DimaRider]

Hey guys. Looking for some direction on where i might be able to find a bottom end for my 3b. one of the crank shaft bearing caps failed. Or the bolts failed.
Would like to just get a new short block and swap out if possible. This is a 24v truck. Any other options for motors?

 

[FJ73Texas]

Go 1HZ or 1HDT. Seems like 3B engines get turned into lawn art.

 

[DimaRider]

Go 1HZ or 1HDT. Seems like 3B engines get turned into lawn art.

That might be an option for sure but the Truck is a 24v and im not sure how hard/easy that swap would be.

 

[FJ73Texas]

Many 1HZ trucks are 24V. Not too sure about 1HDT but I am going to guess those come in 12V or 24V as well.

 

[DimaRider]

Many 1HZ trucks are 24V. Not too sure about 1HDT but I am going to guess those come in 12V or 24V as well.

Thank you. I wasn't sure. Wonder how hard the swap is and if there are kits.

 

[svsisu]

Depending on where you source a 1HDT or 1HZ you would only need to change to a 24v Alternator and starter. The 12v starters do pretty good handling 24v. I stuck one on my 24v truck and used it while my 24v one was being refreshed.

Other issues with the swap would be moving the engine mounts, different input shaft on transmission, and new radiator. Other odds and ends but plenty 1hz motors have been put in BJ 70s

 

[OGBeno]

Depending on where you source a 1HDT or 1HZ you would only need to change to a 24v Alternator and starter. The 12v starters do pretty good handling 24v. I stuck one on my 24v truck and used it while my 24v one was being refreshed.

Other issues with the swap would be moving the engine mounts, different input shaft on transmission, and new radiator. Other odds and ends but plenty 1hz motors have been put in BJ 70s

It's really not that easy. There are hours and hours and hours of integration involved. Putting the engine in is the easy part.

 

[DimaRider]

It's really not that easy. There are hours and hours and hours of integration involved. Putting the engine in is the easy part.

I figured it's not. Got any ideas where i can get a replacement 3b bottom end?

 

[OGBeno]

I figured it's not. Got any ideas where i can get a replacement 3b bottom end?

Post an ad in the Diesel Classifieds section of MUD.

 

[bottombracket]

Look for a 15B/BF/BT/BFT.

 

[DimaRider]

Look for a 15B/BF/BT/BFT.

are all those direct swaps for a 3b? I really just need a complete working bottom end to make it work.

 

[bottombracket]

To the best of my knowledge, they should be.

I’ll be able to tell you more in a couple of months… But I’m going down this pathway with my own 40 and helping a friend put one into his BJ42 shortly.

The 3B is aging quickly and more and more parts are NLA. The 15B platform is much more robust; we just haven’t seen them that much in this hemisphere…yet.

 

[FJBen]

Look for a 15B/BF/BT/BFT.

This is the way…


Although I wouldn’t pass up a 14B. I believe they were used for a lot longer than the 15b/f/t series so in theory greater parts availability.

 

[DimaRider]

Where would I find a 14 or 15b turbo motors?

 

[bottombracket]

Look up Chaiyut Khemglad on Facebook, CHK Garage in Bangkok. I bought a 15BFTE ECU from him, he’s only on Facebook and Facebook messenger, but he’s very responsive, not a scam artist, I got my ECU via DHL in three days. Not bad from Thailand to Texas.

 

[Irish11]

Toyota Dyna, Coster Busses, Megacruisers, etc. would have the 15b as an option. They have some in Canada since you can import them after 15 years. But your main option is going to be buying one overseas and shipping it.

 

[bottombracket]

He posts his shop number freely. You could try WhatsApp’ing him there.

 

[bj70bc]

15bt

 

[bwiygul]

Curious- for clarification sake- I’m doing my resto on a 40 series and swapped a 3b in. I have a donor 3b as well. I was going to rebuild one and use the spares for my spares off the second. Would it be advisable to look at just going 15bt now?? Haven’t done anything besides mounts as of yet. And are they direct swap as far as mount locations?

Sorry for the thread Jack-

 

[FJBen]

Curious- for clarification sake- I’m doing my resto on a 40 series and swapped a 3b in. I have a donor 3b as well. I was going to rebuild one and use the spares for my spares off the second. Would it be advisable to look at just going 15bt now?? Haven’t done anything besides mounts as of yet. And are they direct swap as far as mount locations?

Sorry for the thread Jack-

Me personally, yes I would skip that 3B and go 15bt. As far as I have heard, the 3b, 13bt, 14b, 15b all mount the same and can use the same transmission

The 15bt is a far superior engine and would flat out rip in a 40.