Ed's 77 Terex 72-41

[mountainguyed67]

Alt. = altitude.

Thanks.

I hate abbreviations.

 

[mountainguyed67]

7231 shows as 146 flywheel HP. 7241 shows as 153 flywheel HP.

That doesn’t sound like enough difference to give the same performance.

 

[Welder Dave]

It all depends on the full powertrain and condition of the engine. A fresh engine with no issues could make a big difference. If rebuilt could possibly install different pistons and/or injectors to up the power a little. It is a 2 cycle so needs to be wound up to make the most power unlike most 4 cycle diesels. Too much power on an older machine with dwindling parts supply could lead it to an early and expensive grave.

 

[d9gdon]

I say more power, Scotty. You're going to run out of traction most of the time.

Those Allisons are tough. If you up the HP, just don't get it in a huge bind where it'll break. It's not like you're using it in a mine running 24/7.

 

[John C.]

I would suggest that instead of whining about the lack of responses with free information, you do a little bit of homework on your own and come back with specific questions or risk receiving nothing but silence.

 

[mountainguyed67]

Those Allisons are tough.

Someone posted (I think on here) that the guys running this type Terex loader where he used to work would keep it at full throttle and switch the direction back and forth repeatedly, and it never broke anything. If that’s a true story, then reasonable operation with the turbo engine won’t hurt it.

 

[mountainguyed67]

I say more power, Scotty. You're going to run out of traction most of the time.

I’m thinking the same way. It has open differentials front and rear, so it’s easier to get something spinning. Thereby keeping it from breaking something.

 

[Welder Dave]

Have you run one with a fresh engine? You've got a 45 or so year old loader that doesn't exactly have spare parts sitting around collecting dust in a dozen dealerships. I'd suggest keeping it stock if you want it to be the most trouble free.

 

[mountainguyed67]

Have you run one with a fresh engine?

No. So yes, I get your point. But, it could go either way. Maybe if I ran one with a fresh engine would know it was enough power, or maybe I would know it wasn’t enough power.

 

[Welder Dave]

Why go to all the trouble to go turbo and tempt fate?

 

[mountainguyed67]

I won’t do it unless I find out the turbo models had the same drivetrain, or same strength drivetrain. I’m not decided yet. I’m still seeking information elsewhere.

 

[mountainguyed67]

So this is a 250 hp engine? Or might be?

 

[Welder Dave]

Tag on pump says 136.5 Max. brake horse power but that might just be the most the pump would ever require. Is there a tag on the engine?

 

[mountainguyed67]

Is there a tag on the engine?

Yes, but I can’t make out hp.

 

[mountainguyed67]

Here’s one with the hp. And the tag on the valve cover says N95 injectors.

 

[mountainguyed67]

I got the spreader bar set up, then took it off and put the valve cover back on. The spreader bar wouldn’t quite turn upright with the valve cover on.

 

[mountainguyed67]

I’m also making progress on plumbing the diverter valve to run the log grapple, I now have the measurements for the last two hoses.

 

[mountainguyed67]

I ran the hoses all the way out already. I’m thinking the clamp blocks will cut the rubber part of the hose, so I wont leave them in there unless I can put in something to protect them.

 

[mountainguyed67]

that would require a valve/injector/governor tune-up.

I’ll have to read on this.

I have someone else saying all I have to do is swap the governor, he thinks you’re misleading me. What is the purpose of what you say?

 

[DMiller]

Stationary engines are designed to do ONE thing, sit at full rpm all day day in day out, there is NO throttle. Will require governor swap and Rack Run on the engine.

Any component in Fuel Control replaced, requires the full rack run to get everything in the right settings.