Anyone used them for a F-150? Are they a quality alternative for the 130 amp re-man'd Motorcraft alternators? The Powermasters are suppose to be pumping 125 amps at idle and 200 at full output. What do you all think?

 

Never heard of them myself, but looking at the web pages, it seems that there is only a 130 AMP version for the late model F-150s.
http://www.powermastermotorsports.co...ate_model.html

The 130 and 200 AMP options are for earlier Ford models ( 66 to 93 )
http://www.powermastermotorsports.co...rly_style.html

The Power Master Motorsports web page might not be 100% updated, so you might want to call them to check on the aplication of the 200 Amp.
Also one site listed a 43G Ford Style Alt in 150, 170 and 200 amp options, but the price range was 392.00 to 534.00 ! WOW !

The 63G Ford Style Alt is 200 or 225 Amps, but the price is 534.00 to 624.00. Don't know where this is at price range wise with the same to same comparison, but that is alot of money for an Alt.
Also I did not see which Ford style was needed for the Late model Ford ( 63G or 43G ).

Nice to have that much output, but you might also want to check that this works with the under drive pulley set. I saw a link on the Powermaster web site :

"The output of high amp alternators can drop off substantially under 2400 rotor RPMs. Therefore, Powermaster does not recommend power pulleys with high amp alternators."

I was wondering what was going to happen with this if a pulley set was put on this.

Complete text :
http://www.powermastermotorsports.co...r_pulleys.html

Seems like a nice idea, but unless the pulley is a 3:1 ratio, the 2400 rpm spin rate on it at an 800 rpm idle is going to no do so well. This could mean that it works worse then a stock alt at idle.?? Got me, that is pure pontification on my part. You would have to check with Powermaster direct to verify if this is a drops off like the stock, or drops off worse then stock.
D******g up some questionable content from the back of my mind, the more windings ( or is that more dense windings ) on the alt are what allow for higher amp output, and if the core is not spinning fast enough, then the field created is not enough to get through the windings, and actually might cause a lower then stock amp output at idle.
That is a real questionable posting right there, it has been more then a decade since I had to think about how the guts of one work. These statements have not been verified to be true and do not express the opnions of the poster . That is how sure of that I am

Good luck, give Powermaster a call and ask them about your specific application to see if it is a fit.

Steve

 

I was thinking about doing the same thing. Roushfan-1 recommended these guys:

www.mralternator.com

The have a 200 amp alt for our trucks for $225.

Seems quality and good prices too.

 

Thanks everyone!

I'll be calling them within the next couple days to see if they are compatable with pulleys. I'll post the answer.

 

MR ALTERNATOR Fast delivery! Should have got one a long time ago !! Simple in and out install .....Good luck..

 

jlaird and Roushfan-

Thanks for the tip. Looks like a good site.




I think the difference in price reflects the the fact that the Mr. Alternator alternators are re-man'd. The Powermaster's are new. Now, the question really is:

Are the Powermaster alternators better quality, justifying their price delta? Is a re-man'd as good as a brand new alternator?

 

On Rebuilt VS New (standard amperage units)- I was told that the rebuilts have new bearings, new brushes and if they are equipped with them, new diodes. That's it. I figure that with all the wear items replaced and the common failure item replaced (diodes) what is left to distinguish a new unit from a reman. unit?

 

InfernalCombustion is pretty much right a quality reman should be as good or better than new. In some respects it does matter who rebuilt, what type/brand of pieces they used for replacement, and how much care and testing was done. Generally when ALT. shopping in a parts store you can almost always bet that the LTD Lifetime one will out last the 1 yr ALT hands down. Also look for a ALT Dyno sheet with the unit. The better ones will be tested before they are shipped out for correct output. Some will even show a amperage output across a RPM range.

This is just general stuff picked up from the automotive parts business. I do not gurantee any of the above statements hold true 100% of the time.

 

Infernal. and KYFord.-

Thanks for your rational statements. I upgraded my 95 amp for the 130 amp Motorcraft alternators recently, but it was painful giving up the 95 amp (core deposit refund). Although I have faith in the re-man people in Michigan, it still hurts giving up original equpment. Maybe I'm being a bit to over-reactive. I'll be installing the E-Fans (Mike's) on July 8, and the only reason I'd be interested in a 200 amp upgrade would be to make sure I have enough power. I think I'll be fine with the 130 amp. I'm going to give it a shot and see what happens. If that fails (I don't think it will) I'll upgrade to either the Powermaster or the MR ALTERNATOR brand.

Keep rollin'!

-Matt