348 Alternator confusion

I read about the alternator changes from Delco to nipendenso as well the the various rebuild options out here. When I find nipendenso part numbers out here and look them up they are all 105 amp. I read the alternators were 140amp so there is confusion there on my part apparently.

Is it the later 93+ were perhaps 140amp, or just the syders or just the TB's? Are those subject to the rectifier and regulator rebuild as well or was the the smaller amp ones?

Additionally when people rebuild them like ernie shows https://www.ferrarichat.com/forum/threads/348-alternator-removal-rebuild.142329/ isn't there a need to rewind them at the rebuild time?

Thanks for clarification.

 

no not at all, not trivia... Due to current high rise in NY with no parking, I am still a year out before we buy a place with a garage. So I am acquiring all the parts, mods, fixes that will go on the 348 when I buy one. It will be 93-95TB preferably but probably Spyder since there are so many more of them. Replace or address everything, it is 20+ years old after all, a generous budget is allocated for it.

One question is alternator, I will just pre buy one, have it rebuilt with the regulator/rectifier and waiting along with everything else then install swap it all out but I'll be darned if I can actually find what model alternator was on those cars. Again posts here list part numbers but other posts talk about amps that do not match the part numbers. Part Number: 155785 is 105 amp. Yet I read a 140 amp was used on the 93 +.

I look up online parts catalog but seems I am not good at doing that as I don't see the 140 amp alternator listed.
Can someone validate
1) where 140 amp Denso 156235 was used?
2) were those 140 amp Denso rebuilt with ne rectifier/regulators also or just the older < 40amp ones

Thanks!

 

Got it, makes sense with what I read and see. I know the 140 amp is larger and requires brackets or modification to existing brackets, some places supposedly sold a retrofit kit etc.. I'll just wait then go from there on that alternator item.

Plenty else to stock pile, bushings, relays, bulbs, aircon motor fan, exhaust, Hill engineering tensioners, silicone hoses, oil fuel hoses, clamps, various sensors, SS brake lines, plug wires, wheels, CF bits... basically 20 year old cars need consumables refurbished in my mind. I would not be buying as an investment but to drive miles be damned.

I look every few weeks seems the later Berlinetas are harder to find but spyders all over. Especially yellow ones. We'll see next summer what the market brings.

Thanks for the responses.

 

Well I was just asking when they changed as it was not clear is all, I was not saying I need anything. But that said, alternators generate power to the car not draw power from the car. So I assume your talking about parasitic drag or mechanical load? The idea is a larger alternator causes more drag? Respectfully I would think not, not to even the most sensitive butt dyno.

 

I did come across these, they can be found stateside for about $370. I "believe" they are the same 140 amp model as Ferrari Part 156235. Figured I'd post it as someone may know or have need for it one day ir maybe to investigate further as a reto fit.

https://www.elreg.com/product/021080-0520-12volt-140amp-denso-alternator/

Can't seem to find information about the brackets though that.stojanovic posted, thanks!

Ricambi sell the 348 140amp alternator but no the brackets as far as I can tell. If I could find the brackets I would buy it and try it myself as a retrofit. Who knows... maybe the 355 bracket works.

 

Seems there is no obvious cross-ref for the 348's Denso 140 amp alternator #156235 to other cars.
Does anyone know if the 348's Denso 140 amp alternator #156235 interchange with the 355's Denso 140 amp alternator #158047 alternator?
Different part numbers but same amp, same pin count (3), same manufacturer and appear the same to the eye ball at least.