[Healeys] Correct V-belt

[Harold Manifold]

Hank et al,

I am not familiar with the pulleys on the BN1 and BN2 other than I have
been told they are wider than both the 3/8" and 1/2" pulleys on the later
Healeys. If someone out there has a pulley from a 100 and can measure the
Effective Groove Width (the width at the top of the pulley) and the groove
angle (it should be close to 34 deg.) I can determine the right series of
belt. Length is more difficult.

I will use my 45 year old SAE manuals as opposed to AI.

Harold



On Sun, Mar 23, 2025 at 11:37 AM Hank Leach <gradea1 at charter.net> wrote:

> Harold-thank you! great article and completely understandable and useful.
> Now do you have anything about the monster V-belt on the 100?  I think that
> is the belt both Michaels are talking about. This one is really hard to
> find, massive and often fitted wrongly thus eating up generator bearings.
> It was made to be mounted on the original truck(lorry) version 6 cylinder
> engine and carried over when the 4 (2660cc) was cut down and manufactured.
> I had nothing but pulley problems during my restoration. Would love to have
> a number for this one. Original belt part number 2H4238 fitting pulleys
> 1B1057 crank;1B1024 WP and  1B1727 dynamo. FYI AH Spares says this is the
> belt:
> *CHT137
> <https://www.ahspares.co.uk/austin-healey/big-healey/cooling-heating-cht101-to-cht147/fan-belt.aspx>* *Fan
> Belt - Correct 3/4" Width
> <https://www.ahspares.co.uk/austin-healey/big-healey/cooling-heating-cht101-to-cht147/fan-belt.aspx>*  3/4"
> wide.  Moss has "original type" 021-066
> Regards, Hank
> --------------------
>
> From: "Harold Manifold" <manifold at telus.net>
> To: "Michael Salter" <michaelsalter at gmail.com>
> Cc: "Healeys at Autox" <healeys at autox.team.net>
> Sent: March 23, 2025 at 9:57 AM PDT
> Subject: Re: [Healeys] Correct V-belt
> Michael,
>
> I want to save you from falling down the fan belt rabbit hole. A couple of
> years ago I wrote the attached article for our club magazine. It should
> help to give you a clear path forward.
>
> Harold
>
> On Sun, Mar 23, 2025 at 6:17 AM Michael Salter <michaelsalter at gmail.com>
> wrote:
>
>> Michael,  as I recall you are running an alternator on your 100. Has the
>> original 100 generator pulley been fitted to the alternator, as the
>> original alternator pulley would definitely require a totally different
>> belt than would be correct for the 100 pulleys?
>>
>> On Sat., Mar. 22, 2025, 8:19 p.m. Michael Oritt, <michael.oritt at gmail.com>
>> wrote:
>>
>>> I went to the NAPA store today to get a V-belt and was sold a smooth
>>> belt with an FH (Fractional Horsepower) designation.
>>> The packaging said it was for lawn and household applications of less
>>> than 1 HP.
>>> I asked the sales clerk if an FH belt was suitable for automotive use
>>> and was told "Yes".
>>> Now I see that Google AI says no--that such a belt is [i]not[/i]
>>> suitable for cars.
>>> Who is right--AI or NAPA and if not FH which designation is correct?
>>>
>>> Best--Michael Oritt
>>>
>>> _______________________________________________
>>> Support Team.Net http://www.team.net/donate.html
>>> Suggested annual donation  $12.75
>>>
>>> Archive: http://www.team.net/pipermail/healeys
>>> http://autox.team.net/archive/healeys
>>>
>>> Healeys at autox.team.net
>>> http://autox.team.net/mailman/listinfo/healeys
>>>
>>> Unsubscribe/Manage:
>>> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
>>>
>>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation  $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive/healeys
>>
>> Healeys at autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/manifold@telus.net
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20250323/0ba64f4e/attachment.htm>