[Healeys] 28% OD with 3.54 rearend

Tue Nov 14 07:43:00 MST 2017

All,

Since my data was the source of the Excel file, I went and tried to find my original source for that data.  Couldn't find it on my current computer so I am abandoning that data.  I'm sorry for any confusion.

I did digitize the graph sent by Harold M and have attached a new Excel file showing the torque and HP for the Mk III derived from that graph.

Art Braundmeier

________________________________
From: Harold Manifold <manifold at telus.net>
Sent: Monday, November 13, 2017 9:04:08 PM
To: 'Mike S'; Braundmeier, A.; 'Healey List'
Subject: RE: [Healeys] 28% OD with 3.54 rearend

Gentlemen,

I don't often disagree with information posted on this board but the recent Excel chart of Hp and Torque is either a highly modified engine or wishful thinking. The published data for the Mk III is maximum power of 149 bhp at 5,250 rpm and maximum torque 173 lb. ft. at 3,000 rpm. I have attached a copy of a HP and Torque curve from a period publication I have. The attached chart has BHP, Torque and Brake Mean Effective Pressure for both a Mk II and Mk III Healey.

If there is a 250 HP Healey engine out there that generated the curves on the spreadsheet please send pictures.

Harold

________________________________
From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Mike S
Sent: Monday, November 13, 2017 2:37 PM
To: Braundmeier, A.; Healey List
Subject: Re: [Healeys] 28% OD with 3.54 rearend

Thanks.  Just what I was looking for.  Anybody have data for lower than 3000 rpm?  Does the attached make sense?

Mike

On 11/13/2017 1:43 PM, Braundmeier, A. wrote:

Here is the torque curve I've been using.

________________________________
From: Healeys <healeys-bounces at autox.team.net><mailto:healeys-bounces at autox.team.net> on behalf of Mike S <phoenix722 at comcast.net><mailto:phoenix722 at comcast.net>
Sent: Saturday, November 11, 2017 4:57:11 PM
To: David Nock; Healey List
Subject: Re: [Healeys] 28% OD with 3.54 rearend

Is there an easy way to determine the various installed ratios?  I'm curious as to how my mph vs rpm stacks up.  Also, is there a torque curve available (BJ8).

Mike
________________________________

On 11/10/2017 1:44 PM, David Nock wrote:
Check out this site. Put the info in and you will know you speed and rpm

 http://www.angelfire.com/fl/procrastination/rear.html

Sentfrom my iPhone

On Nov 10, 2017, at 8:27 AM, Ed Orr <eorr at cogeco.ca<mailto:eorr at cogeco.ca>> wrote:

It's all positive Bob been running this since Lemperts first edition 3.54 about 10 years ago or so .
Lots of power to start off in 2nd gear and about 2700 rpm at highway speeds 70/75 mph .

Ed Orr
'65 BJ8  3.54 28%
'66 BJ8 3.54 28% (for sale)

-----Original Message----- From: Bob Spidell
Sent: Thursday, November 09, 2017 10:46 PM
To: Healeys
Subject: [Healeys] 28% OD with 3.54 rearend

Anyone running this setup?  Pros?  Cons?

Bob

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--
Mike

MGTD (long gone)
BN1 (long gone)
BN2-100M (gone but in good hands)
BJ8

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--
Mike

MGTD (long gone)
BN1 (long gone)
BN2-100M (gone but in good hands)
BJ8
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