which automotive alternator to use

[Nehi]

I'm doing engine instalation on my 9-A ,using 0-290 D2B with a bottom case mount alternator bracket from Vans (not the boss mount)
I would like to use a standard alternator from the local parts house but the selection would take a day to find one that fits best. am looking for a 35-50 amp range, internal reg.
Happy for any opinions or imput !
PS : Vans had a 35 amp in old cataloge but not in the new

[Geico266]

Don't mess around with an alternator that is spinning backwards.

http://www.plane-power.com/

Plane Power is the only way to fly. JMHO

[hgerhardt]

Originally Posted by Geico266

Don't mess around with an alternator that is spinning backwards.

Exactly.

That's why you should use one from a pre-2000 Honda 4-cylinder car. Hondas of that vintage run "backwards" compared to almost all other car engines, which is the same direction as Lycomings. The best one to use is for an '85-'87 Honda Civic. The casting has the tensioning ear in the right place to fit nicely on a Lyc, it's rated at 55A, and internally regulated. If you want to make it run-away-proof, modify it like this article I wrote. Only drawback to using this alternator is you'll have to replace the multi-rib pulley with a V-pulley. That will take you less than 5 minutes to switch out with an impact wrench.

Heinrich Gerhardt
RV-6, flying

[tmbg]

anyone know of an alternator that spins the right direction and is EXTERNALLY regulated?

[turbo]

87 suzuki samuri alternator has lifetime warranty from auto zone, internal reg, 60 amp,compact, usually last about 400 hrs. have been very happy.

[Sam Buchanan]

Originally Posted by tmbg

anyone know of an alternator that spins the right direction and is EXTERNALLY regulated?

The original 35a alternator that Vans sold for years is a NipponDenso as used on 1976-1979 Honda Civic CVCC without air conditioning. A common number you can find in Duralast and other reman alternators is 14184. The Beck/Arnley number is 186-0100. No problems with running the alternator "backwards" and you can leave the stock fan in place. A blast tube to the rear of the alternator is a good idea for diode cooling. A 1975 Ford regulator works great with this unit. You should be able to purchase alternator and regulator for less than 50 bucks. As long as you own the 1979 Honda you have a lifetime warranty.

Alternator

Regulator

[breister]

I have a used B&C 35-40 amp (researching - it is a few years old) aircraft alternator plus voltage regulator with voltage warning light. I upgraded to 60 amp internally regulated.

PM me if interested.

[Plane krazy]

mine came from a toyota tercel with AC 70 amp internal reg i installed the larger pully 150 hours and not a problem

ken in maine

[vonjet]

If you use a Plane Power alternator that is Internally regulated do you still need the Voltage Regulator from BC? I have the LR3 Voltage Regulator that B and C specialty sells. Do I still use this if I buy an alternator that is internally regulated?

[RatMan]

You may find this interesting...

http://www.f1-rocketboy.com/alternator.htm