Hey guys - sounds like I am doing a similar pulley invention. I am using the
stock hub with two of the rear pulley halves. This gives me a smaller pulley
diameter using a narrow belt with nice sealing and adjustment options. I am
bolting a harmonic balancer to the front of this assembly without using it's
belt groove.
I'll show you what I have done so far when we get together in
Topeka.
Dennis
Somebody asked about why we just don't use a bigger water
pump pulley. the
answer is there isn't any room because of the thermostat
neck cast into the
head. There might be a little room for upsizing but the
aftermarket kits all
seem to have pretty small water pump pullies. My newest
TR4, the ex-Dennis Shea
car came with a fluid-dampner modified to fit with a
small pulley on the front
side. This moved the alternator and water pump
pullies forward of the stock
location allowing an oversize home-made custom
water pump pulley. It also has a
FIAT radiator of unknown source. That car
can idle in my driveway like a stock
TR4.
Bob Kramer
Volente, TX
Perfection is not attainable, but if we chase perfection we can catch
excellence.
Vince Lombardi
----- Original Message -----
>From: Larry Young
>To: Bob Kramer ; FOT ; Dennis DeLap
>Sent: Wednesday, July 28, 2010 1:36 PM
>Subject: Re: [Fot] Topeka - TR4 crank pulleys
>
>Starting with a stock pulley
is a good approach. I made my own pulley and
>started by doing a little
machine work on a stock pulley hub and used. This
>greatly simplified the
part I had to make. I used the bolt on balancer that BFE
>and others sell.
I wanted to make it small to slow down the water pump and
>alternator, but
the size was limited by the harmonic balancer. I wanted to see
>if I could
find a smaller bolt on balancer, but never got around to it. There
>is a
place that specializes in dampers - damper doctor or something like that.
>Unfortunately, I didn't take any photos of the pulley. I may have some
>sketches.
>Larry Young
>
>Bob Kramer wrote:
>Dennis, What I think we need is
a balancer pulley kit that slows down the water
>pump and alternator. I
always have trouble visualizing this, but I think smaller
>crank pulley slows
down the other two? Is this in your plan? -----Original
>Message----- From:
Dennis DeLap <yellow-green@sbcglobal.net> Sent: Wednesday,
>July 28, 2010
9:19 AM To: Friends of Triumph <fot@autox.team.net> Subject: [Fot]
>Topeka -
TR4 crank pulleys AMICI - I am working on a narrow belt conversion
>using
the stock TR4/3 crank pulleys. If any of you have crank pulley pieces and
>parts that you could part with for my experiment - bring them to Topeka. See
>you all soon Dennis _______________________________________________
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