HELP, PLEASE! 348tb alternator upgrade

Thanks for your reply! Interesting! I didn't know it was a dealer upgrade. That might explain the confusion and lack of information and parts.

 

Hi, you're right, this diagram is probably for my car, which means the shield is for a Delco, which I have today. It seems like there's no factory shield for the Nippon Denso 105A, which I'm now intending to buy. It's obvioulsly designed to fit the Delco upper bracket and most likely won't fit the different bracket for the Nippon Densos. If there's no factory one, I'll ask my workshop to make one.

 

NOW I got the information below from Eurospares (which is all according to the parts diagrams and lists, which I referred to in an earlier post):

these two brackets are for the GENERATOR 105 A. NIPPONDENSO Part No: 155785 and 156235 Alternator 140A (Nippon Denso)
145357 lower bracket -Valid From Engine Nr. 30738
149627 upper bracket -Valid From Engine Nr. 30738

149627 pictures:


These two bracket are listed for 139421 changes to 170192 GENERATOR 105 A. DELCO Not as spare part now Replaced by kit 1 -70000790 for front battery cars, 70000791 for rear battery cars / ALTERNATIVE USED 393050214 and 156235 Alternator 140A (Nippon Denso)
139295 BELT TIGHTENING AND GENERATOR SUPPORT -Valid Till Engine Number. 30737
144639 UPPER BRACKET -Valid Till Engine Nr. 30737

144639 pictures:


Lars

PS. I didn't attach the images, but they're photos of the the two different upper brackets, which can be seen in the parts diagrams.

 

Thank you very much!

 

Thank you! I told Eurospares that it's got to be wrong and the guy there admitted that it's confusing with all these brackets and that they can only go by the parts lists. The Scuderia site shows the same thing, but not Maranello, which is a relief. I think I have to give up the ND140A and order a new ND 105A kit (70000809) (from Maranello) and install a heat shield (which I have to fabricate, as there's none for the Nippon Densos). Lucky you, who found a ND 140A kit

 

Thanks very much, but I don't see your point here, sorry...

 

That's what I thought and a good point! Very kind, thanks!

 

Hi again 348-friends!

Does anybody know where the cables from the Nippon Denso 105A should go to and how they should "run"/"be installed" in the car (it's obviously different from the Delco)? Can you find a diagram for this somewhere?

I also wonder if anybody knows the part number for an original cable loom for this alternator. I haven't been able to find it.

Thanks in advance!

 

Thanks for your speedy reply!
Sorry, but what diagram do you refer to?
I've looked at this diagram, but don't know which part I need.
https://www.ferrariparts.co.uk/diagram/ferrari/348-tb-ts/132-electrical-system-not-for-usa

 

Your link is for the Delco alternator I have replaced with a Nippon Denso, which is in this diagram: https://www.ferrariparts.co.uk/diagram/ferrari/348-tb-ts/042a-current-generator-(valid-from-engine-nr-30738)-battery
I can, however, not find the cable loom in this diagram either.

 

This picture from "ernie" here on Ferrarichat shows the connector and wires I'm looking for.

 

It's mainly the harness I want (the workshop managed to find a connector plug), but I thought it came as a kit with the wires attached to the connector. I also need a wiring diagram to see how the wires are routed and where they are connected!

 

Wow! Thank you very much for your very comprehensive answer!!! I'll look into it together with the workshop.
Thanks again, Lars

 

SOLUTION TO MY ALTERNATOR PROBLEMS

FIRST: THANKS EVERYBODY THAT CONTRIBUTED IN THIS THREAD!!! I APPRECIATE IT VERY MUCH AND HOPE IT'LL HELP OTHERS AS WELL!

My car now has a Nippon Denso 105A alternator fitted, instead of the original Delco 105A, and a manually manufactured heat shield between the alternator and manifold. I also bought a new battery, the most powerful I could find that goes into the battery compartment (Tudor Exide High-Tech 77Ah 760A(EN)) – I think/hope it's going to support the alternator when power spikes occur.

If anybody's interested in doing the same operation, these are the parts you'll need (the first number is from the diagram you can find at, for example:
https://www.eurospares.co.uk/parts/ferrari/348-27-motronic/electrical-ignition/current-generator-starting-motor-41199/155684
https://www.ferrariparts.co.uk/part/ferrari/155785?id=36841

1, 70000809, alternator kit (Nippon Denso 105A, upper bracket and belt)
2, 155684, alternator shield
4, 1588882, screw
5, 12642501, washer, X3
19, 145357 Lower support (not available new, only used, I got mine from Eurospares)20, 114818, screw
21, 102742, washer (it is a nut, but says washer)
25, 16043621, screw, X2
26, 16104411, nut
27, 12604479, washer, X2
29, 137768, estendblock/silentblock
30, 102742, nut
You'll also need a round connector that fits the Nippon Denso alternator that comes with the complete harness (see posts above) or see if you can get a connector separately (my workshop had a used one) and connect cables yourself (wiring diagram for 348 GTB/Spider, only difference is battery at rear instead of front).
I also recommend (thanks to some guys here at the forum) that you manufacture a heat shield and fit it between the alternator and manifold (there is no original for the Nippon Denso).
And, as already said, buy a new battery, the most powerful that fits!

Lars