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Old 05-10-2010, 09:46 AM
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Comments on alternator location?

Because of a narrow engine bay on my '34 I've made this alternator bracket:



I see two potential problems with this:

1. The belt hasn't enough grip around the water pump pulley. The engine won't have a mechanical fan tow.
2. The long distance from the bottom of the crank pulley and up to the alterantor pulley, might case the belt to flex and jump off.

Since the engine is running clockwise, this will help against problem no 2, make problem no 1 worse.
If I'd move the alterantor over to the other head, this will help against problem no 1, but make problem no 2 worse.

I have no rom for locating the alternator low on the engine.

Comments on my setup?

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Old 05-10-2010, 09:55 AM
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I don't see why it would be a problem, doesn't look to be positioned much different then some of Alan Grove's set ups.
http://www.alangrovecomponents.com/S...Short_Pump.htm
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Old 05-10-2010, 10:00 AM
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why couldnt you lower the alternator by shortening the brackets? if you do that and shorten up the belt, it may solve the problems you think you will have.
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Old 05-10-2010, 10:49 AM
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Thank you for your answers!

The alternator sits pretty close to the standard valve cover. Later, when I add Vortec heads with tall valvecovers and maybe adapters to use perimeter bolt covers, there are no room for lowering the alternator.
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Old 05-10-2010, 05:35 PM
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Ever think of mounting below close to lower pulley? I have seen some that way The nice thing is that they kind of disappear.
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Old 05-10-2010, 11:10 PM
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There ain't enough room to a low mount.
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Old 05-11-2010, 01:40 AM
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Run it, see what happens, if the belt jumps or the water pump slips you can always make up some idler pulleys that holt the belt in place as needed, like such:

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Old 05-11-2010, 05:24 AM
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So you can't use a factory pass. side alternator set-up? (do you have to use a short water pump?)



Here's a couple more I found...


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Old 05-11-2010, 05:32 AM
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Crappy picture of the location, but you might try lowering the mounts on yours. The mechanical fan on mine spins just fine...
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Old 05-11-2010, 06:03 AM
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Here ya go nice and tight, speed way motors
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Old 05-11-2010, 06:33 AM
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Thank you for all your inputs!

I have googled lots of different alternatives to see what works for others.

The reason I got worried was that on most alternatives with the alternator mounted like mine, they also have an AC pump on the opposite side an two-groove pulleys. Then 2 belts are running the waterpump.

Or they use 2 groove pulleys on the waterpump and crank and add a short belt between those two (how to the get this belt tight, by the way?)

And yes, I have to use the short style water pump.
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Old 05-11-2010, 02:07 PM
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Quote:
Originally Posted by staleg
Thank you for all your inputs!

I have googled lots of different alternatives to see what works for others.

The reason I got worried was that on most alternatives with the alternator mounted like mine, they also have an AC pump on the opposite side an two-groove pulleys. Then 2 belts are running the waterpump.

Or they use 2 groove pulleys on the waterpump and crank and add a short belt between those two (how to the get this belt tight, by the way?)

And yes, I have to use the short style water pump.
The two ways to do the short belt around just the waterpump and crank are to unbolt one of the pulleys to get the belt on( it doesn't have to have extreme tension on it when it is in 1/2 of each pulley) or you can buy waterpumps that have slotted holes where they bolt to the block and vertical set screws in the upper bolt hole pushing down on the upper bolts shanks to force the pump to the top of those slotted holes. Very common in circle track racing for the pump to be slotted.

In your case I would run a two groove and a short belt to keep a flying alternator belt from stopping the cooling. You can get 20+ miles with a dead alternator, you can't with no cooling.
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Old 05-11-2010, 02:51 PM
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Your alternator is way too high and the belt unsupported section is way too long. On a 34 car with a SBC the standard water pump sits too low on the radiator. What you need is a Zip water pump riser that uses a standard Chevy six cylinder water pump and has integral alternator and air conditioner compressor mounting which keeps both low on the engine and vastly improves the looks.

Vince
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