[cj4044]

why are some 4bt 105 hp and some 130?what do you have to do to make the 105 go to 130?

 

[ShadeTreeMech]

correct me if I'm wrong fellas, but the 105 hp are naturally aspirated and the 130s are turbo charged.

 

[averagef250]

Every 4BT ever made is turbo charged. Hence the 4= 4cylinder B= B series T= turbocharged breakdown of thier namesake. The 4B engine would be a non-turbo.

They have different ratings because they were ordered that way. The 4BT wasn't made in a 130 HP rating AFAIK, the 4BTA was though. The factory ratings don't mean much. Turn a couple screws and you've surpassed 105 HP by a long shot.

 

[ShadeTreeMech]

ok, I learned something new I thought they were all called 4bt and the turboed versions were 4bta

Irregardless, the difference is in the aspiration.

 

[cj4044]

Does the A in 4bta mean it's aftercooled?

 

[toolmanoffroad]

yes....

 

[scout4bta]

From Cummins "Troubleshooting and repair Manual for B3.9 and 5.9"

The 4B's made as little as 54hp, up to 80hp, highest listed hp for a non-turbo.
4BT's range from 86hp to 110hp and the 4BTA goes to 130hp with a P pump. The highest hp listed for a VE pump is 120hp.
If you have the pocket book for it, the ISB4 makes 170 hp, but this is computer controlled.
Not to mention the 250hp P pumped marine 4BTA.

 

[cj4044]

is it feasable to put an aftercooler on a 4bt?

 

[CrewCab59]

4bt can be made into a 4bta

you can do air to air or water to air ,make sure you buy all the parts.

Scott

 

[johnretired]

ok, I learned something new I thought they were all called 4bt and the turboed versions were 4bta

Irregardless, the difference is in the aspiration.

Actually the 4b motors are non-turbo.
The 4bt motors are turbo'd
The 4bta motors are turbo'd and aftercooled.