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Alternator direction
jon200 - 30/1/13 at 10:22 AM

How do you know what direction your alternator is designed to run? I need to find a replacement smaller one but i am not sure the OE direction. Is it looking at the front of the engine crank pulley or from the rear of the alternator?

What size can i go down to Amps wise for a 2L turbo?

adithorp - 30/1/13 at 10:30 AM

Alternators run clockwise when viewed from the front same as most engines (with the exception of a few Honda's).

plentywahalla - 30/1/13 at 10:33 AM

I am fairly sure that they can run in either direction. The fan may not work so well though.

r1_pete - 30/1/13 at 11:58 AM

quote:
Originally posted by plentywahalla
I am fairly sure that they can run in either direction. The fan may not work so well though.


They can, and yes the fan needs changing.
Straight 6 E Types with Aircon had the alternator mounted the opposite way, pulley facing the driver, to fit the air con pump in.

mcerd1 - 30/1/13 at 01:12 PM

quote:
Originally posted by jon200
What size can i go down to Amps wise for a 2L turbo?

what else are you running off it ?

headed windows, geat big spot lights, electric windows, etc.... - or a track car no lights at and it just needs to start the engine

britishtrident - 30/1/13 at 01:36 PM

Fuel injection system takes a fair current but by modern tin top standards you don't need a big alternator 40 amps is more than enough. If you have carbs you can go even smaller.

jon200 - 30/1/13 at 05:10 PM

quote:
Originally posted by mcerd1
quote:
Originally posted by jon200
What size can i go down to Amps wise for a 2L turbo?

what else are you running off it ?

headed windows, geat big spot lights, electric windows, etc.... - or a track car no lights at and it just needs to start the engine


It's just starting and lights I'd need it for. Are there any the people use because they are small?

r1_pete - 30/1/13 at 06:44 PM

Nippon Denso from a Diahatsu Charade is a popular choice, sorry I never did establish the model number, but its running fine on my E Type.
mini alternator
mini alternator

40inches - 30/1/13 at 06:45 PM

quote:
Originally posted by jon200
quote:
Originally posted by mcerd1
quote:
Originally posted by jon200
What size can i go down to Amps wise for a 2L turbo?

what else are you running off it ?

headed windows, geat big spot lights, electric windows, etc.... - or a track car no lights at and it just needs to start the engine


It's just starting and lights I'd need it for. Are there any the people use because they are small?

A lot use A073 Daihatsu Denso Kit Car Lightweight Alternator | eBay

jon200 - 31/1/13 at 06:40 PM

That's pretty small! Will have a look out for a cheap one on eBay, have seen one but its from a terrios. Not sure if its the right one.

http://item.mobileweb.ebay.co.uk/viewitem?itemId=300851857134&kw=300851857134

[Edited on 31/1/13 by jon200]