Dave & List,
I've got a spare "HE" engine I bought from a wrecking yard about 10 years
ago. As best i know, it was an option on early TR6s. This one was from a
'69 with a 3.7 rear end. The head is supposed to be the same as fitted to
the PI engine, giving a 9.5 - 1 compression ratio. The pushrods seemed
marginally shorter than on a stock 8.5 - 1 engine. This one had a US cam,
so I don't know if the HE engine took full advantage of the extra
compression.
It also had a factory oil cooler set-up - the usual metal filter
cannister had a oil cooler line fitting braised into it, and a plate with
another fitting was between the block and the cannister. It's all in
storage, so I can't confirm except from memory.
I wonder how common (or uncommon) the HE engine is, and how did you get
one when the cars were new?
Jeff
74 CF13816U
----- Original Message -----
From: "TR6 Triumph" <tr6_1969@hotmail.com>
To: <6pack@autox.team.net>
Sent: Sunday, August 10, 2003 12:29 PM
Subject: What makes an HE engine
> Hi All,
>
> What are the differnces with the HE engines found in the 1969 TR6 versus
all
> the engines that followed it. And did the TR250 and TR5 also have HE
> engines?
>
> Sincerely,
> Dave Herbert
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