Jon-
I run a serpentine front cover on my roadster so I can help a little. Get
the pulleys from D & D. Dan has really nice(but expensive) billet aluminum
ones from March with adapters that will work just fine. Do not slow down the
water pump unless you live in a very cold climate, like the Yukon. The water
pump is reverse rotation, but not reverse flow.
The heater bypass on your 215 engine water pump is not present on the 4.2
front cover. Rover uses some very complicated hoses to accomplish this. I am
not familiar with the EFI intake, so I am not sure what the threaded hole is
for unless it is for a pipe nipple to connect as a heater bypass line. You
need to maintain the heater bypass to prevent air pockets.
Do a search for MOCAL & you will find a distributer in Florida that should
be able to fix you up with a takeoff to run a remote filter, if yours does
not work out.
Your 4.2 has a crank that is about 3/8" longer in the rear than the 215, so
you may need a spacer to prevent the transmission input shaft from loading
the thrust washers in the engine & locking it up- assuming a GM
transmission. Not sure if you will have this problem with a Rover 5-speed.
I will send you some installed engine pictures in an MG showing hoses, etc,
off list, if you want them.
Jim
-----Original Message-----
From: owner-buick-rover-v8@autox.team.net
[mailto:owner-buick-rover-v8@autox.team.net]On Behalf Of jon
Sent: Friday, January 04, 2002 6:59 PM
To: buick-rover-v8@autox.team.net
Subject: 4.2 questions
I'm in the process of fitting my 4.2 inot the TVR 3000S. It had an Olds 215
already but there will still be some problems to solve. Today I made an
adapter to screw onto the engine in place of the oilfilter in order to use a
remote filter. the only direction available to me is forward, as frame,
coolant conduits and damper eliminate most other directions. I can't even
use the two plugs that are used by Rover for a remote cooler. My front cover
has the oil pump driven by the crank, and accepts a distributor.
My questions are three:
1. Am I correct in assuming that the water pump turns counter to the engine?
2. Would someone measure the effective diameters (circumferences might be
easier and more reliable) of the crank and waterpump pulleys. I wanna make
my own pulleys for a serpentine belt. Dayco is sending me the recommended
dimensions for the grooves.I'd like to run the pump at a little slower than
Rover did.
3. My Olds water pump had a small appendage pointing toward the rear of the
engine that connected to a mating nipple on the inlet manifold. The 4.2 pump
has no suich nipple, while the 4.2 manifold has a threaded hole where the
215 manifold had a nipple. What goes into that threaded hole? I use an SD-1
EFI inlet because it's short vertically. It has the same nipple as the 215
manifold. My understanding is that this is a bypass. Do I need it? Does
rover accomplish the same function (I gotta admit, I don't know for sure
what that function is) in some other way?
Jon
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