10 ENGINEBUILDERmag.com | AUGUST 2020
ENGINE DEVELOPMENT
Charlie Weston of Weston Machine
who also worked closely with Dan Jesel
on the camshaft and lifter layout.
“What Jesel did at the time was
never even heard of,” Moran says. “It
was a clam design – clamshell 82mm
cam. You’ll hear about it more often
now, but back then, nobody even knew
what it was. Jesel did all the valvetrain
for me and the camshaft and lifter
layout.”
Internally, the engine features
an all-billet Dailey oiling system, a
Bryant crankshaft, Diamond pistons,
GRP connecting rods, and Speed Pro
bearings. However, the coolest aspect
inside the engine has to be how the oil
drains.
“One of the things that Danny Jesel
worked with me on is the cam-drivenscavenge pump that’s in the back of the
engine about where the transmission
would be,” he says. “ e whole area is
machined out like a valve body. I’ve got
it so the head drains, the block drains,
the valley drains – all the drains – go
to that back area. It’s got two 5/8ths
ri e drillings from the front to the back
that catch all the oil and then deliver
it to the back. In essence, there is not
one drop of engine oil that drains over
the rotating assembly. It all goes to a
reservoir in the back that’s all internal
to the engine and is driven o the cam.
Danny designed that pump for me
and it’s a key thing. You’ll never see it
anywhere else.”
In fact, Moran says some engine
builders will try to keep oil from
draining over the top of the rotatingassembly using lines and similar things,
but this system is completely internal.
“You’ll never see a line anywhere
and it keeps all the upper half oiling and
lifters and all that from ever draining
any oil across the reciprocating rotating
mass,” he says.
e Motor City Billet Bullet engine
at this point was more or less put
together, and Moran had worked with
Land & Sea on a capable dyno set up,
however, one key element was still not
in place – the twin turbos.
Using Garrett’s Gen I turbos, Moran
was able to run the motor on the dyno
successfully to the tune of 3,700 hp,
which was 700 hp more than any dyno
could hold before, but still well shy of
Moran’s goal of 4,400 hp.
“We found out that the limiting12EB_14GRP 12/3/14 8:40 AM Page 108-12 eb.aug20 Engine Development.indd 10 8/7/20 8:37 AM
Naresh Jariwala