darrenjlobb's Adaptronic Managed Compound Blown Derv Bus Build

[darrenjlobb]

Another update to the long ongoing project here,

Have been working on mounting up the HP pump to the motor for the last couple evenings. The pump I will be running is a CP3 style big frame unit, specifically an R110, meaning clockwise rotation 110mm3/stroke capacity. I wont bore you with the benefits of using the newer CP3 style pumps, but the inlet metering etc is much better suited to my needs, and also just a better design IMO in general. 

Anyway, the pump is off a tractor (well its new, but as fitted to Deere / CNH tractors with Bosch common rail systems.) Due to the much larger frame size, and the fact I am intending to run it on the Aux belt, there was no way I was going to be able to use the small alloy bracket PSA use to mount the stock HP pump. So decided to just make a new one up first as last rather than attempt to modify something to work. 

The pump in question (one is an R110 and one is an L110 as had previous plans to reverse the pump and mount on the wheel arch for room for a blower, but now that the blower isnt being used have stuck with the R110 and conventional mounting)



So step one was to make up a base plate that would pickup on all the stock bolt holes on the front of the block:



And bolted in:



Next was to make up the mounting plate / face for the pump itself, started by boring the 52mm hole for the pump snout:



Which fits like this:




Measured and drilled the mounting holes (some precision required here as with holes to mount to block to make sure its spot on first time, last thing you want on mounts like this is slop so it can be mounted in more than one position, belt alignment is key here!):





Mounted up to the block for a test fit:



With pump mounted up to check alignment:



And a lick of paint:






To enable me to convert to an 8 rib style belt I had to have some new pulleys machined up for the crank, alternator and tensioners, and was able to use an off the shelf item for the CP3 from the states.





Old alternator / tensioner only fitted in pic for testing, will be fitting a new Valeo unit and have a new tensioner / pulley, but being machined out in the center at the moment for clearance.

Obviously some modifications to the car / engine mount cradle will be required for clearance for this lot once we get to that point.

Also had time to get the flywheel and clutch fitted up, going with a Helix 4 paddle solid clutch, with a heavy pressure plate (hence the hydro clutch). Running an EW style flywheel as much lighter than the DW counterpart, but still uses the larger clutch, correct offset and has the 40-2 pickup. Already had a flywheel here, but had it machined:



Bolted up:



And clutch fitted up:



Thanks for reading!