It is almost a bolt in replacement to fit the higher capacity alt to an EB/ED engine which gives an extra 25a charging capacity. The Alternators are not physically the same the outer case on the EL alt has a bot which hits the bracket on the EB motor. I had to grind a small amount off the bracket in 2 places so the alt would clear it. The EL alt has an 8 rib pully which is slightly smaller - 2-3mm diameter and the pullys arent interchangable due to different shaft lenghts. I am there fore using the smaller pully which means the alt will be spinning that slight bit quicker which is no big deal in itself. The EB has 2 plugs, the main regulator plug and a small plug with a yellow wire which loops back into the main plug. On the EL alt this circuit has been integrated into the regulator itself so the small plug now hangs in the breeze.
There is also a known problem with the charge wire on the EB/ED cars. I am not sure it it is the same on the later EF/EL. Basically the charge wire is too light to carry 85a (max) and it gets very hot. After time it deteriorates and eventually brakes off. Mine did this one night and I ended up having to try and drive home with no charging system. Needless to say I didnt get home without an RACV call out.
The TSB on the charge wire problem simply states: remove bolt, clean connection and replace with new bolt.
My solution was to buy a starter motor lead which had nice heavy duty ring connections on each end. This was run from the output on the alt directly to the battery positive.
So everything is good now, with the bigger guage wire I have noticed far less voltage drop when things are turned on eg high beals flicking and indicators etc and I have more charge capacity to run more things in the future.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.