Comments needed on a Bluebird puller conversion

[randydupree]

these engines go 300,000 miles easy..randydupree93wb
----- Original Message -----
From: Jim March
To: WanderlodgeForum@yahoogroups.com
Sent: Monday, May 09, 2005 10:53 PM
Subject: Re: [WanderlodgeForum] Comments needed on a Bluebird puller
conversion


Ken Sann wrote:

> In Cummins, the 5.9 is most likely the 6BT-5.9. If it is aftercooled
> it is the 6BTA-5.9.
> (6= cylinders, 'B' =engine series, 'T' = turbo, 'A' = aftercooled, 5.9
> = displacement)
> A very common engine, typically rated at 160hp without the aftercooler.
> These were common in many medium duty trucks, and in many late 80's
> motorhomes. but the vast majority were aftercooled, from 175+ hp. This
> engine later gained a 24valve head and was renamed 9with many other
> upgrades) the 'ISC'.


OK, cool, that's a start. We know it's not aftercooled (meaning an
intake air cooler between the turbo and intake manifold, right?) because
we can see a straight shot pipe from turbo to intake in one of the pics.

As best we can tell the repower was done circa 1982 or so.

So assuming it's a 6BT, is that a decent mill?

What's it's likely redline?

What are the odds it's being overreved by the 5.36 rear end?

After having written the above, I did some googling. Found this site in
reference to the marine version:

http://www.tadiesels.com/cu-6bt5-9-m.html

From there there's a power/torque/fuel use set of curves:

http://www.tadiesels.com/releases/Cummin...rmance.pdf

It's dead clear that if I can keep it down near 1900 - 2000rpm at least
on the flats it'll be WAY happier.

Jim

> ken
> Wannabe in SoCal
> ----- Original Message -----
> From: Jim March
> To: WanderlodgeForum@yahoogroups.com
> So...first, does anybody know exactly which motor this might be and
> know
> anything about it's reliability?
> Anybody know anything about this drivetrain and gearing options?
>
> Jim
>
> [Non-text portions of this message have been removed]
>
>
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