[Healeys] Threaded Hole

[WILLIAM B LAWRENCE]

Gotta remember this engine was used in several different vehicles, some of them diesel fueled. These features could have been needed for other applications. I suppose the extra hole could have been for a relocated dipstick or maybe an oil cooler return. I thought about it for my PVC mod, but decided on the down tube port instead.

Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces at autox.team.net> on behalf of Steven Kingsbury via Healeys <healeys at autox.team.net>
Sent: Monday, January 18, 2021 1:37 AM
To: Michael MacLean <rrengineer.mike at att.net>
Cc: Healeys <healeys at autox.team.net>
Subject: Re: [Healeys] Threaded Hole

Not sure what it's for, but it does exist on my engine and the plug that fills that hole uses a 1/2 BS or 7/16 WW socket. Again not sure what it's for. But I'm pretty sure if you don't plug it, you're going to have some problems.
   Also look at the back of your block, there is a hole that used to fit an oil feed that was eliminated on 100 engines, but is used to feed oil to the 100S distributor I believe. The hole wasn't plugged on my block and I didn't notice it until I had the engine back in the car and fired it up and it leaked oil out the hole. Standing behind your engine, it's a little off center to the left and about an inch below the head. I've been told it should be a brass plug. I made an aluminum plug and pressed it into the block.
Steven Kingsbury


On January 17, 2021 at 12:25 PM, Michael MacLean <rrengineer.mike at att.net> wrote:

Can someone please tell me what this hole is for?

Mike MacLean
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