Thread: MSD Distributor in 5.0

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Thanks for the good advice guys - looks like my achin' bones are going to have to do the cold concret thing. At least the body isn't on the frame yet and there is no crossmember in the way (IFS on a TCI 'A' chassis).

w2zero - the crate engine has never run so the bearing clearances should be good.
I just found this on p111 of the 2006 Ford Perf. Parts catalog:

"Some heavy-duty oil pump drive shafts may not allow a EFI distributor
to slide down far enough over the oil pump drive shaft. EFI distributors
have a longer shaft below the gear.
Running a HV oil pump with production bearing clearances can cause
abnormally high oil pressure and possible premature distributor gear wear."

Now - off again to Summit or Jegs

Originally Posted by Irelands child

Thanks for the good advice guys - looks like my achin' bones are going to have to do the cold concret thing. At least the body isn't on the frame yet and there is no crossmember in the way (IFS on a TCI 'A' chassis).

w2zero - the crate engine has never run so the bearing clearances should be good.
I just found this on p111 of the 2006 Ford Perf. Parts catalog:

"Some heavy-duty oil pump drive shafts may not allow a EFI distributor
to slide down far enough over the oil pump drive shaft. EFI distributors
have a longer shaft below the gear.
Running a HV oil pump with production bearing clearances can cause
abnormally high oil pressure and possible premature distributor gear wear."

Now - off again to Summit or Jegs

Hey Dave,

So, if I understand correctly, the HV oil pump is not a good idea on a new engine......what about a rebuilt one? I purchased the Melling M-68HV when I was gathering parts for my 69 302 build, but have been reading a few things that suggest that maybe I should cash it in for the regular one. It will definitely be a street driven car. Thoughts?

Qoute: Now I have to take the vacuum advance off the dist - between the A/C compressor and alternator on Street and Performance brackets, do not have enough timing adjustment. So much for paying the extra bucks for the MSD Billet small diameter vac advance distributor. At least they supplied the material to do it.


You may want to rethink getting rid of the vacuum advance. Lot's of overheating issues can be tracked to the lack of one.

Just a thought.


Don

Getting taken to task am I ?? Eleven months after my original post!!

On a new/rebuilt SBF engine, after lots of research here and elsewhere, a HV pump was found to be not needed as there is plenty of volume and pressure on an engine with "good" clearances. I screwed up by thinking more volume was necessary. I also screwed up by installing my pump drive backwards .

The vacuum advance will go back on IF enough clearance can be found around the manifold, water outlet neck and other claptrap hanging in the general vicinity - assuming I can optimize my static timing.

[QUOTE=Irelands child]Getting taken to task am I ?? Eleven months after my original post!!

The statute of limitations hadn't run out yet.


Hey, we get a little slow when we get older.


Don

you just need to get the timing set properly, the right tooth lined up and it should do it... i have a similar problem with my large body HEI unit in my 289...... except what the problem is is theres a small groove in the bottom plate of the distributor that fits over the heater hose fitting on the intake.... gives me about 6 degrees of sweep.... takes a little time and patience to get it in place but once its there you're happy and it should lock down and never move again