Why is a 3000 engine better than a 2.6?
First, the engines are virtually identical on the exterior. The only visible
difference is the boss on the block where the engine number plate is placed.
Only an expert can discern the difference. ( I am talking about a later 100-6
with the 6 port head).
As for the interior, everything is identical except for the 2.6 block that has
the smaller bore and the smaller pistons. Otherwise, the crankshaft, rods,
heads, valve size, and every other engine component is identical to the 3000.
Camshafts are the same with minor profile variations.
So why use the 3000 engine? Because the 2.6 liter engine (2639 cc) was weak
and not fun to drive and the 3000 engine (2912 cc) produced a lot more power -
almost 300 more cc's - that's a 10% increase in displacement !!!!!
That is why people put 3000 engines into 100-6s. Not the other way around.
Richard Mayor
BN7L-466 Vintage Racer
Portland, Oregon
> Date: Tue, 21 Dec 2010 00:00:35 +0100
> From: pajtamuvek@gmail.com
> To: eyera3@gmail.com
> CC: healeys@autox.team.net
> Subject: Re: [Healeys] 2.6 engine rebuild
>
> Hello Ira,
>
> Being honest I have also lamented on this engine problem for a while before
> making my decision. This is my first Healey. I hope not the last :). I am
> restoring cars as a passion. I did some other BMC cars recently. I have
long
> realized that I find my joy in building the cars, and only enjoy them for a
> short period. After this I usualy let them go, and look for another
mission.
>
> Although I am not a diehard originalist, I would like to keep/restore my
> cars near to the factory spec. Or at least at a level, from where factory
> originality could be reached without much efforts. Thats why I would like
to
> build this car with a 2.6 engine rather than using the 3000.
> But at the same time I would easily accept using a 6 port head on this
> engine rather than the 2 port. This is something which can be altered any
> time with not much work.
> And in my opinion, a 2.6 engine with a 6 port head is not much worse than a
> 3000. Or?
> What are the point the 3000 is better than the 2.6?
>
> Gergo
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