Rebuilt Cummins 6BTA

Genius

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hp of the 6BT goes from 210 to 480 I believe. Depends on the model. I have the 250hp 6BTA, its a Fresh Water Aftercooler design. Good for low maintenance and keel cooled boats, older engine circa 1997.
 

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Gurryman

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The 6BT is rated 160-220 hp and is NOT aftercooled, The 6BTA JWAC "jacket water aftercooled" is rated 250-270 HP, The 6BTA sea water aftercooled is rated 300-370, The QSB 5.9 is available 220-380, and also 425-480. the 425-480 have significant differences to the 220-380. The QSB series are common rail electronic controlled engines.
 

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Genius

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very very helpful. So the QSB 5.9 is same block (size etc) at 6BTA?
same size. I believe there are two different block designs. To confuse things more, there is a 6.7 ltr. B series engine also.
 

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Quik Fix 16

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Told him I didn't know, I'm just going to sell it.

I know nothing about diesels, I fiberglass. I remember a while ago my engine builder told me "we just turn it up". Don't know what he meant and really didn't care. They don't ask me how I fiberglass their boats and I don't ask them how they build my engines.
 

Quik Fix 16

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So today my ex engine builder stops by for a hello. I ask him what he means by "turn it up" and he answers, "put more fuel to it , its in the pump. You can turn them up until they run away". I still don't understand but I don't have to.
 

Genius

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So today my ex engine builder stops by for a hello. I ask him what he means by "turn it up" and he answers, "put more fuel to it , its in the pump. You can turn them up until they run away". I still don't understand but I don't have to.
I wish it was that easy.:confused:
 

ARC

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So today my ex engine builder stops by for a hello. I ask him what he means by "turn it up" and he answers, "put more fuel to it , its in the pump. You can turn them up until they run away". I still don't understand but I don't have to.
Not that easy to do it right. Pump, valves, cam, pistons, injectors, a/c I/c . You can just take a 210hp drill a hole and make it 370hp. If it was that simple why would anyone spend double for the same engine with higher HP?
 

BillD

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Quik Fix 16

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Seriously just putting it back together the way it is. Nothing wrong with it and not rebuilding. The bolt on parts were taken off to paint, thats all.
 

bpeckm

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ok... But (forgive me) I thought the model was "6BTA"? So how do you determine the HP? The Jones brothers at Dyer love to recommend the 6BTA ... as their preferred (mechanical) diesel repower. But the part I have been (seemingly) missing, is that they are not just 210 HP models.
Older 6B's could be T or TA, ranging up to 350hp (with mechanical fuel injection) with different turbos and fueling profiles. Reliability and longevity of course deteriorate with higher hp ratings, aftercoolers being a maintenance item that is often overlooked.
 
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