348 alternator removal & rebuild

If I understand you correctly, it sounds like you want to replace the Delco with a Nippondenso. It's not a straight swap - there is a kit with new mounting brackets, alternator belt, wiring, pulley, etc. in order to do the swap. The $5,000 alternator mentioned earlier in this thread is in fact the entire "kit" to upgrade it. Just rebuild the Delco - properly rebuilt with heavy duty parts, it should last many years.

 

All fixed, upgraded components, same day service, $41. Back in the car (mosquitos got too bad so I will drop her off the jack stands tomorrow). Gotta love it! Thanks again!

 

You might want to invest the $134 and get a spare alternator from Discount auto or someplace similar. Just ask for a 1992 Dodge Monaco V-6 unit, and you won't be waiting on the rebuild place if you have a problem on the weekend in the future.

BT

 

Done and Done. Now that I know I can do it in an hour (and since it looks like this can go out any time), it makes complete sense to have one on the shelf. What really surprised me was how easy it was to get the belt back on (I had heard it was difficult - my wife was laying next to me managing tools and she agreed that it looked "too easy"). The trick for me was to only put the hinge pin in and rotate the alternator up while setting the belt - that way I could already have the belt on the tensioner and all lined up. Weight of gravity brought the alternator in line for the two bolts that hold it in place. Then I only had to snug the tensioner (not too tight) and everything sounds really happy when I started it up.

 

I had my 'battery' light come on while driving the other night.

This is the first time I have driven the 348 at night for many years now and this happens.

Oh well, in the garage she goes till I get around to fixing it.
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Yep, got battery in the left rear and still have the bullet connectors.

I will check and make sure everything is ok and I will replace/upgrade it all when I pull the engine out.

I WAS going to rebuild the alternator when the engine came out anyways, but looks like I will have to do it before hand.

That or I should just pull the engine out now?

 

I read most of the thread and I don't think I saw this listed-

brush pack that fits in the Acura alternator listed as a match for a 348 Denso-
Honda part# 1105 PR7 A01 List price $30.38.

Honda list on the alternator is $378. They can be gotten in a Denso rebuild, wholesale, for much less. Denso rebuilt alternators are usually actually new units, or so they appear.

Cheers,

TomB

 

I don't know if this has been posted, but I was bored tonight and did some major parts cross-reference searching. I found this:

http://www.rmlunits.com/Suzuki__Car_Commercial__Alternator/100-234/

I looked up NIPPON DENSO 102211-5070 and the Suzuki model listing for it on a few sites. Then I found this:

http://www.ebay.com/itm/NEW-ALTERNATOR-SUZUKI-ESTEEM-SIDEKICK-1-8L-102211-5070-31400-77E22-/110788839522?pt=Motors_Car_Truck_Parts_Accessories&hash=item19cb878862&vxp=mtr

That alternator sure does look like mine and has the same part number too. Only the plug is different and that is a swap. I hope we can use these.

--Mike

 

From my post the other day-

Going on my 'gut' feeling................I fit the new voltage reg and the alternator is still ****ed in my alternator.

I removed it and took it to my friends auto-elec workshop so we can load test it and then check the stator/rotor and rectifier.

If I found the correct rectifier online, I would have ordered one and replaced at the same time.

Unfortunately, it seems mine is a little different to the Denso alternators posted here.

The part number for my alt is-101211-7580

BUT!!!! If you look at my pics, the post for the battery leads face up, not backwards like in all the other Denso alternators listed here.

Every pic of the Denso 101211-7580 that comes up shows the post facing backwards.

I reckon someone fit a different rectifier and rear cover somewhere along the line. It can't be original.

I was/am going to fully rebuild the alt when I pull the engine out for the major. But tomorrow I will try and put it back together with used parts to get me out of trouble till I do it properly.

My friend has hundreds of old Denso alternators laying around and man-o-man a lot of them look VERY similar to mine. It should be easy to swap some internals over to fix it.

I will let ya's know how we go tomorrow afternoon.

 

That has always been the case with Ferrari alternators, even on mine it's Bosch, but there's SOMETHING about it, that makes it Ferrari specific, part number NEVER comes up in local inventory of BOSCH distributors!!!

High Speed bearings, maybe????

I just take it down the street to a cranky guy with a cigar stub in his mouth, who suspiciously turns it over in his hands, and asks:

"Exactly WHAT did THIS come out of?????"

I admit what it "is", and tell him:
"Make it good, for 7800RPM....."



Good luck Pappy!!

 

Pics here.

http://www.ferrarichat.com/forum/showpost.php?p=141424009&postcount=13
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I just had this happen last night, battery warning light is lit but still holds a charge, however the light turns off @ 4000+ rpm. The alternator was rebuilt back in late January of this year unless it's the voltage regulator now or something else. Damn, back to Norwoods it goe$.

 

FINALLY fixed it.

Was a faulty rectifier.

I have the old one here, I will clean it up and get the part number off it so I can refit the correct part when I pull the engine out for the major service..............one day.

My Auto-elec mate fit a new rectifier for me this morning. The post is actually 6mm now instead of 8mm. So I had to place 2 small washers under the bottom lock nut so the wiring could sit on it properly.

All good now, I haven't driven the 348 in nearly 6 months. I washed it and took it for a drive.

AWESOME car!! Very very happy.
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Was that the noise that woke me up this morning??

 

Yes sir, I hit 7800 rpm today.

 

Hi Ferrari folk,

Well the old alternator suddenly stopped charging. The meter reading ranged from 3 to 14 and anywhere in between, and the dashboard battery light was flickering. So lifting the back end and putting the back wheels on ramps I set about checking the system.

After an evenings research it appears that the alternator itself seldom fails. It is the Rectifier and/or the Regulator, or the brushes which wear out.

I found a very useful article here which gave part numbers for replacement bits without resorting to Ferrari prices.
http://www.ferrarichat.com/forum/technical-q/142329-348-alternator-removal-rebuild.html

The required parts are by Regitar (based in the USA) but after searching Regitars website I found their English distributor, a company called M J Rotating in the W. Midlands. 01543 360511. They had the Regitar parts in stock and posted them to France for me for a total of £59.94 including postage.

Part no RN - 02 Rectifier
Part no VR- H2005-4A
(I didn't need new brushes)

The new Rectifier has a smaller positive post than the original, so tap out the post on the old one and the new one with a hammer. Stick the old post in the freezer to make it smaller, then insert it into the new rectifier and screw the nut down onto the plastic casing. As you turn the nut it draws the splined post into the new rectifier.

The charging system is now showing 13.5 - 14 V which is far healthier than the original readings.

I am now a happy bunny again and 'charging' around healthily.

Happy Harry

 

Hello Ernie

Yes I know it is no 1 in this thread and that is why I put it here, as a kind of homage to your original post. I wouldn't have been able to do it without knowing the part numbers listed in your original thread.

So a huge thank you, I owe my success to you.

Harry

 

My buddy had the Regitar voltage regulator fail right out of the box. Mine failed about 3k miles after installation, re-installed the factory ND voltage regulator. There have been a couple other posts about Regitar parts failing early. I still have the Regitar rectifier in my ND alternator...probably been about 12k miles so far.

 

Does anyone know where to buy these rebuild parts now? Been doing a web search and not having much luck..

 

Hello

They are by a company in the US called Regitar. Google them.

Replacement alternator parts for the Nippon Denso


Part no RN - 02 .....Rectifier
Part no VR- H2005-4A .....Regulator
(I didn't need new brushes)

Hope that helps
Harry

 

PS, You will find tjhat the positive connection post on the new item is the wrong size. No problem, just tap out the connection post from the old item and tap it into the new one. (I put mine in the freezer first to reduce the size a little.

Best wishes
Harry