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Nippon Denso Alternator

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Nippon Denso Alternator

Post  Trigger on Fri Sep 12, 2008 2:16 am

Bought a replacment alternator for my M100 from this seller and want to pass on that it not only arrived within days of ordering but also was exactly the same as the one that came off my S2 Elan and at 135 far far better than the 525 plus VAT quoted from Lotus. Spoke to the seller, Alan, on the phone and also seemed a top man who deals directly with a firm that re-conditions alternators and more and has been assured by Lotus specialists that this Denso replacment fits all Elan M100's.


Ebay seller:soss29


Last edited by Trigger on Thu Nov 05, 2009 2:00 am; edited 2 times in total

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Repair Guide

Post  Trigger on Fri Sep 12, 2008 2:29 am

Just for reference incase anyone is braver than me to replace the part themselves:
Soruce from Lotus Elan Central guide:

This task breaks down into two phases:

1. Gaining access to the alternator attachment bolts, wiring, etc.

2. Unbolting & moving the loose alternator down and out.

Phase 1

This requires working first from above and then (with the car on jackstands) from below. When you attempt to see the adjustment bolt on the alternator pivot arm from above remember it must also be completely
removed and later replaced. So to get room, remove the power steering fluid container's sheet metal mount and push it away to the rear. Also, remove the power steering hose from the top of power steering pump and push it back to the rear ( I drained the container, but the fluid tends to drip out of the hose anyway). [You can probably get creative and stop the drips by strategically placing a pen cap or such in the end of the open hose to cork it up--Doug]

To get access to the top of pump, take out engine dipstick and remove oxygen sensor. You will need a variety of tools -mostly metric. Now, you should be able to loosen and remove the adjustment bolt and just loosen-only the top pivot strap bolt. The alternator is still held up by the bottom bracket and belt.

Loosen right side front wheel bolts, jack up, support, remove wheel (do not turn steering wheel from straight ahead position).

Phase II

From below, remove oil filter in order to get at the alternator connector and also the single wire with its terminal, the connector needs to be squeezed at the plastic locking tab in order to disconnect it. First, disconnect battery before alternator connections.

OK, now for the tricky part, because it doesn't seem possible for the alternator to be removed! It comes through the opening between half-shaft and frame, and remove the hose clamps from the pipe along the frame opening at the bottom to get more room. Then locate and unbolt the right most bolt from the alternator bottom bracket (from the engine), then loosen the remaining left most bolt and tilt the bracket-alternator combination down to the right in order to separate the alternator via the *long* pivot bolt. There is just enough room to remove this *long* bolt. No need to remove the bracket from the engine, however.

Now, you should pry up and the alternator is in your hand and it is heavy - be careful as you reverse the alternator end-for-end and slip it down through the opening connector end first and up. This is not easy and requires some fishing around until it falls through. [Make sure the kids aren't around to hear all the swearing--Doug]

My rebuilder charged about $115, and please check that the pulley bolt is tight before reinstallation (just reverse all the previous moves!).

write-up by Loren

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drive shaft

Post  the ref on Tue Sep 16, 2008 12:15 am

I did mine last year what a pig to do. I had to take out the drive shaft Evil or Very Mad affraid If you have small hands you MAY be able to do the job with out takeing the shaft out.
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Re:

Post  Trigger on Tue Sep 16, 2008 12:30 pm

the ref wrote:I did mine last year what a pig to do. I had to take out the drive shaft Evil or Very Mad affraid If you have small hands you MAY be able to do the job with out takeing the shaft out.
Yea the guy who did mine said he had to remove the driveshaft aswell ... also noticed that the one that came off was a Denso replacement part rather than the original Lotus part. Mind you it makes more sense as you can afford to buy 4 or 5 of the Denso ones for the price of a Lotus original one lol.

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Re: Nippon Denso Alternator

Post  tashuka on Tue Sep 16, 2008 3:56 pm

Trigger wrote:
the ref wrote:I did mine last year what a pig to do. I had to take out the drive shaft Evil or Very Mad affraid If you have small hands you MAY be able to do the job with out takeing the shaft out.
Yea the guy who did mine said he had to remove the driveshaft aswell ... also noticed that the one that came off was a Denso replacement part rather than the original Lotus part. Mind you it makes more sense as you can afford to buy 4 or 5 of the Denso ones for the price of a Lotus original one lol.

but diod u not say a lotus one would last better?

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Re:

Post  Trigger on Tue Sep 16, 2008 7:18 pm

tashuka wrote:
Trigger wrote:
the ref wrote:I did mine last year what a pig to do. I had to take out the drive shaft Evil or Very Mad affraid If you have small hands you MAY be able to do the job with out takeing the shaft out.
Yea the guy who did mine said he had to remove the driveshaft aswell ... also noticed that the one that came off was a Denso replacement part rather than the original Lotus part. Mind you it makes more sense as you can afford to buy 4 or 5 of the Denso ones for the price of a Lotus original one lol.

but diod u not say a lotus one would last better?

Yes but depends when it becomes cost effective compared to one that is a quarter the price!

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Denso alternator

Post  jackdaniel on Fri Oct 23, 2009 6:32 am

Have you got the part number for that Denso alternator, please.

Impossible to source in Oz, and I want a bigger output Bosch alternator on. don't mind doing a custom adjustment bracket, but sizing and mountings need to be close enough.

Thanks

Jack

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Re: Nippon Denso Alternator

Post  Trigger on Fri Oct 23, 2009 7:08 pm

jackdaniel wrote:Have you got the part number for that Denso alternator, please.
Impossible to source in Oz, and I want a bigger output Bosch alternator on. don't mind doing a custom adjustment bracket, but sizing and mountings need to be close enough.
Hi Jack,

I can't find a part number for the alternator but I do have the details and address of the company which produced it.

Nippon Denso Alternator for Lotus Elan M100 - Rate: 120.00
ACW Electrics, 220 Leigh Road, Wimborne, Dorset, BH21 2BZ

I purchased this new alternator off ebay in 2008 as a replacment for the nakered one on my car which I still have in a box somewhere, think the coils corroded in the winter months. I cannot find them on ebay at the moment but may be worth contacting them or Denso directly?

Denso Europe wrote:DENSO Starters and Alternators are represented by the following distributor in Europe:

United Kingdom
DENSO Sales UK Ltd
Building 1, Eden Road, Walsgrave Triangle
Coventry CV2 2TB
United Kingdom
T: +44 24 76843416
F: +44 24 76842521
E: J.Woodward@denso-sales.co.uk

Finland
Atoy Oy
Lauttasaarentie 54
00200 Helsinki
Finnland
T: +358 (0)9-68271
F: +358 (0)9-6827201
E: atoy@atoy.fi
W: www.atoy.fi

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Re:

Post  Trigger on Thu Nov 05, 2009 1:58 am

The ebay seller of this alternator is Alan (soss29 username on ebay) and his number is 07738 609804. Company is called A.C.W. Electrics. I have had this Denso one on my car for over a year now and it has lasted so far

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Re: Nippon Denso Alternator

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