Don't underestimate the value of a REALLY good balance job when building the
engine. The fella that did my machining is probably the best that I know
and his attention to detail always astounds me, especially when I see the
front of the shop. The balance job on my engine was done very well, and
combine that with matching clearances across all main caps and all cylinders
can make a huge difference. I have never heard a smoother or more
responsive big six than mine. I was surprised at how smooth it was and the
throttle response is WAY better than my Uncle's BJ8! HA!
Cheers,
Chris
BJ8
----- Original Message -----
From: "Alan Seigrist Blue 100" <healey.nut@gmail.com>
To: "PG" <britishcars@shaw.ca>
Cc: <healeys@autox.team.net>
Sent: Wednesday, June 21, 2006 11:18 AM
Subject: Re: TR250/6 versus BJ8
> Paul -
>
> All you have to do is put in a lightened flywheel. Take off about 10#
> and it will rev much faster. All healey racers put in very light
> flywheels.
>
> The other thing is the healey motor was designed when the British were
> taxing car manufacturers if the strokes of their engines were too
> short (maybe to keep italian cars out?), so the BJ8 motor is a very
> long stroke motor.
>
> By the time the TR250 came out, these tax laws had changed and Triumph
> started to design engines with shorter strokes. This helps on hp &
> "response", but the downside is less torque.
>
> Nonetheless, a light flywheel will help if response is important for you.
>
> Alan
>
> '53 BN1 '64 BJ8
>
> On 6/21/06, PG <britishcars@shaw.ca> wrote:
>> I would love some feedback on the following:
>>
>>
>>
>> I own a 68 TR250 and a 67 BJ8 and am astounded at the driving difference
>> between the two.
>>
>>
>>
>> I recognize that the Tr250 was employing new technology with respect to
>> steering (rack and Pinion) and suspension (Independent Rear Susp) while
>> the
>> BJ8 was relying upon technology that was 15 years old.
>>
>>
>>
>> However, what I don't understand is why the Triumph engine is so much
>> more
>> responsive than the Healey engine. They both are pushrod style engines
>> however, the Triumph does seem to rev faster.
>>
>>
>>
>> To help me understand this, I wonder if anybody can fill me in as to:
>>
>>
>>
>> 1) gearing ratios differences between the cars:
>>
>> 2) Torque curves between the cars
>>
>>
>>
>> Any other insights?
>>
>>
>>
>> All this being said, the Healey is a much better Hiway cruiser..however,
>> the
>> Triumph is more responsive on a twisty road..no so much handling but its
>> power band seems bigger.
>>
>>
>>
>> Thanks
>>
>>
>>
>> Paul
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