belgiumbarry

What options do we have for alternators ? i'm missing it for my rally car build. Engine is a 16V M28/22 and engine support is as in pic…
Bosch or other brand # ?

thanks for info !

polecat702

Greg Brown's Precision Motorwerks has the best replacement alternator on the planet.

belgiumbarry

thanks polecat702 , but i would like to order one here local in "Europe".... so i'm searching #'s....

The Forgotten On

AL170X is the Bosch part you're looking for if it is the one in the picture you posted.

belgiumbarry

Thanks Blake, i already found AL170X here on the forum …. asked it at the parts store but that is not a Bosch #..... i assume a typical USA number …. ?

Strosek Ultra

The Bosch no. for my 1987 generator is 0 120 468 004 (Porsche 928 603 011 01).
Åke

gazfish

Looks correct for an ‘85 which is the bracket shown, the ‘84 was a different one for the same M28/22 engine. They are for sale on RosePassion in Europe for 1,200 Euro. Worth looking for a rebuilt one or alternative unless you won the lottery.

Petza914

For that kind of money, you can have a much better alternator with the shipping and duties from the states buying either the Greg Brown or 928 Motorsports one. I have the 928MS 200 Amp version.

Strosek Ultra

When Barry is building a 928 rally car, I think he likes a small lightweight generator, 60 Amp should do. If you are prepared to modify the brackets and other things there are many small generators priced next to nothing around. A good used one from the scrap yard is an alternative. I have a Volvo generator on my BMW 635 CSI.
Åke
PS Maybe this is an alternative https://www.ebay.de/itm/Porsche-928-...IAAOSwUMxaFvaB

belgiumbarry

yes, i have seen silly prices above 1000 euro.... haha
This one looks the right type : https://www.benl.ebay.be/itm/Porsche...EAAOSws8NdJGkq
Will first see further here local .

When i was building the car in 2008 i bought a super light weight McLaren alternator from a member here.... but lost it with the engine ….

For rally we do need some amp's…. in "Historic" we may not use LED , so we have the classic lights… here you see on my BMW all together 700 Watt … that is already 60 amp's !



Here it was allowed once so we used the LED's … amazing how they light up the road. Much better than my 4 Hella's. And you don't even have to aim them good…. almost daylight

belgiumbarry

"think" i solved my problem…….. indeed parts store can't find them or very,very expensive….. so i went to a local specialist in alternators/starter motors.... he found the same results ( 900 euro ) … but phoned me today : this is the same Bosch alternator as used in the Opel Omega ( don't know if those were sold in the USA ?? ) but only in the 90 Amp version.
He had one rebuild , i bought it for 200 €.

Now 90 Amp is enough for the rally car , we don't have lux consumers. Only the in total 600 Watt lights ( 50 Amps ) , but when we need those during rally in the dark , we are always between 3500 and 6500 rpm. , so the alternator can pump that . ( + 2 fuel pumps and eventually a small cabin heater , i installed one from a forklift , only to heat the front windshield )