[Fot] GT6 engine with "special" on the block?

[Terry O’Beirne]

I have never seen a block marked “special” in +40 years of working on them

Yes, the bulges were for clearance and stiffening in the later 2500. Both TR and Saloon got this change , post 1972 I recall when they started using the O ring type head gasket

The earlier 2500 blocks both TR5/TR6 and 2500 Saloon, were all flat sided.

Ive seen post 72 2000 engines with flat sides, so maybe there was not a clean changeover date

Terry

From: Fot <fot-bounces at autox.team.net> On Behalf Of Scott Janzen via Fot
Sent: 25 August 2019 23:50
To: Mike Harmuth <ofracer at gmail.com>
Cc: 'Friends of Triumph' Triumph <fot at autox.team.net>
Subject: Re: [Fot] GT6 engine with "special" on the block?

I’ve only seen those cast bulges on a late model GT6 engine - I assume it’s because the blocks were interchangeable with the TR6 in later years, but am not sure.  Designed to clear the larger stroke of the TR6???  If this is the same as mine, the block is about 25 lb heavier than the earlier GT6 engine and I see no benefit to having it.  However, mine does not say Special on it.



On Aug 24, 2019, at 9:26 PM, Mike Harmuth via Fot <fot at autox.team.net<mailto:fot at autox.team.net>> wrote:

This came up the other day on a Triumph forum. Stumping everyone there. Any ideas what SPECIAL on the casting means ? Not my car but interested in what it means.

"Engine number is KD7632E

So my son’s gt6 is a mk2 w a mk1 engine in it. One thing I’ve never seen on a 6 cylinder engine is the word Special embossed on the block. It’s next to the drain plug on the right side.

Anyone seen that before?   "

<image.png>

Thanks
Mike H
_______________________________________________
fot at autox.team.net<mailto:fot at autox.team.net>

http://www.fot-racing.com

Donate: http://www.team.net/donate.html
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/sjanzen@me.com


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20190825/213a1ef1/attachment-0001.htm>