Reducer Bush

[wardy18 33 1 Cars]

Hi,

 

I need a reducer bush to fit my new alternator pulley which turned out to have a 17mm diameter fitment hole and my alternator has a 15mm shaft.

 

The bush i need is 6mm deep with a O/D of 17mm and a I/D of 15mm.

 

Does anyone know a good place i can get one from without spending a fortune, off the shelf would be great.

 

Material, in my mind, doesnt matter, can be steel or bronze.

 

I dont have a machine shop on the island so thats not an option unfortunately.

 

Many Thanks

 

Simon

[Tom Fenton 1,548]

A 6mm tall bush with 2mm wall thickness? This doesn't sound big enough to be strong enough to do anything useful, esp on a race engine turning to 7000rpm+.

 

If I were you I would have another pulley made with the correct hole size.

[wardy18 33 1 Cars]

DAMN IT.........

 

See this is why you guys are here because you know more than i do

 

It will be a 1mm wall thickness too, total reduction of 2mm

 

Will phone Mr Satchell for one of his 90mm Diameter Alloy ones then, lets do it properly.

[M@tt 77]

is the alternator not a standard pug one then?

 

is there not a suitable pulley from another vehicle you could use? then find a breakers

[wardy18 33 1 Cars]

Nah its a Nippon Denso A073 2.7kg and half the size of a std lump, comes from many applications including Diahatsu's with less than 1000cc and alot of smaller tractors like Kubotas and Yanmars.

 

I have tried for ages to find a pulley for this alternator with 4 grooves and a 15mm ID hole and i thought i had one with a Fiat punto 1.2 alternator which is what arrived yesterday only to find it had a 17mm shaft and the A073 has a 15mm shaft.

[Tom Fenton 1,548]

I know a man who can make you an alloy pulley to your dimensions, www.force-racing.co.uk

[wardy18 33 1 Cars]

How far do you underdrive an alternator before it stops putting out enough power to charge the battery, i can get a smaller crank alternator pulley and a larger alternator pulley and really underdrive the alternator to compensate for the higher revving engine application but do i risk underdriving the alternator too much

 

How do you work it out?!

[wardy18 33 1 Cars]

Just ordered one of Colin's 90mm Alternator Pulleys and have been in contact with Force to get one of their Alloy 10% smaller Crank Alternator pulleys

 

Colin said this will be a suitable set up for the engine and it takes ALOT to over underdrive an alternator