Hi Ron,
Sounds like what you had was a 1098 2" main backing plate. There are three
thick backing plates.
1098 1 3/4"
1098 2"
1275 All
The 1098 plates have the 4 inch hole but in the same location as do the thin
948 ones. You just needed a 1275 plate!
Now you have a 1275 one, custom made!
Paul A
----- Original Message -----
From: "Ron Soave" <soavero@yahoo.com>
To: "Spridgets" <spridgets@autox.team.net>
Sent: Saturday, June 09, 2007 12:20 PM
Subject: [Spridgets] Adventures in race prep (was RE: Blackhawk & Mosport)
> --- "Wm. Severin Thompson" <wsthompson@thicko.com>
> wrote:
>
> > Motor in?
>
> Just about. Long night. Memorable, extremely fun, but
> unexpected.
>
> PPP arrives early, around 6-6:30 with motor. We start
> going through it, it looks OK. We are finishing some
> little stuff, go to put flywheel on. Massive crack in
> rear engine plate. Oops. Unclear how/when it happened.
> I had the flywheel on when it went to the shop, I
> wouldn't have seen it then. I've had a mystery leak
> there since March, that could explain a bit. I get
> another plate, we remember an issue with pump housing
> on this plate from 2 years ago. Plate is from early
> thin flanged block. Hmmm looks fine. So we disassemble
> old one, it won't go on. Like pump hole is in wrong
> spot. Strange - aren't all pumps (and cam) locations
> the same? I guess not. We bolt the 2 different plates
> together for a dimensional check, all holes line up
> perfectly, like they were match drilled. But....the
> pump hole is smaller on the new one, like 1/4 inch,
> and offset from the other one, not concentric to each
> other (BOTH 1275 plates, wtf). I have 2 different pump
> covers, one that was on the 1275 in the car, the other
> a 1275 one I got from Frank (also a 3rd one that came
> off the thin flanged motor, identical to the one Frank
> sent). Either the crank hits or the edges of the oil
> pump. Can't fit both. Again, WTF. It's now 7:45 or so.
> What are we gonna do. I call my buddy Ron Downs, our
> MFG director. I tell him there's a hole that's around
> 4 inches, it needs to be 4.25. Plus it needs to move.
> He calls the 2nd shift guys, tells them we're coming
> in, make it happen. Peter and I speed to work in the
> Alfa, all that's missing is Katherine Ross, Dustin
> Hoffman, and some Simon and Garfunkel music. We get to
> work, Peter is duly impressed by the machine shop,
> 65,000 feet of CNC machines on floors you could eat
> off of. The guys are also duly impressed with Peter.
> The boys rig up a fixture and use a flycutter to
> re-center the hole and re size it. They then set the
> plate up on a rotating base and use an end mill to
> make the counterbore relief cut for the oil pump
> housing. The plate is perfect, better than new.
>
> By the time we high-tail it back to the garage in the
> Alfa, it's 10:00 or so. We do some more assembly of
> the long block/transmission, PPP takes off around 1
> am. Valves are adjusted, final stuff is put on, 2 am.
> I can usually go til daylight, but a long week has me
> beat. I've had enough, as I have to be at the field at
> 8:15 for my son's baseball game (we win, he got the
> victory and went 3 for 4). More family plans til now,
> more later starting at 6 PM so I have a small window
> to work. So....a little more to do today, it'll fire
> up tomorrow.
>
> The boys at work - unbelievable. PPP - what can I say
> - no finer friend anywhere.
>
>
>
> Ron Soave
>
> "Life is just one damn thing after another" - Mark Twain
>
>
>
>
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