Our pulleys are designed to fit the stock Mitsubishi made OEM alternator, which there is no problem.

It has been brought to our attention that there is an issue installing our alternator pulley on aftermarket "high" output alternators. So we decided to see what the problem was.

Upon initial inspection the alternators seem very similar, with just some cosmetic differences. However once the pulley is removed, the differences are more obvious.

OEM is on the left



OEM with pulley removed



Aftermarket with pulley removed



Stock pulley (left) compared to the pulley supplied with the aftermarket alternator we purchased. It is a little hard to see in the pic, but the OE pulley is .3 mm shorter. This small difference causes the pulley to bind on the housing, which you can see created the scrape marks on the alternator housing.



The solution is a 18mm ID x 25mm OD x .3 mm shim that is available at McMaster-Carr 98089A311

Shim installed



Pulley installed



In the interest of helping out the community, even though this is not a design flaw or a problem created by our part. Anyone that has purchased one of our FD pulley kits that has had an issue with installation on a Non-OEM alternator can contact us via email and we will mail you out a shim.

Disclaimer: We have not measured the pulleys from every aftermarket alternator being sold, we do not know if some may require a thicker (.5mm?) shim.

 

I'm curious about the diameter of the pulleys you offer. I'ts clear the main pulley is smaller but what about the WP, Alt and PS diameters? Will the underdrive cause problems with charging, or cooling? Thanks

 

This post is just a small example of why Banzai is an invaluable asset to this community. Keep up the great work.

 

Our alt, w/p & p/s pulleys are the same diameter as stock. Have not had any reported cooling or charging issues and have not experienced any problems on any of our shop cars or customer cars that we have them installed on.

http://banzai-racing.com/store/93+_r...lley_belt.html

 

Just curious as to what the "high" output alternator was originally from? Only reason I ask is Napa Canada has no alternators left, I might be able to pull one from south of the boarder but our dollar stinks lol

Mike

 

The people that have reported the pulley fitment problem, I believe have all bought them from eBay.

A completely other topic are problems people have had with the eBay alternator failing to deliver the advertised amperage, which has nothing to do with our pulley since they have not been able to install it.

 

Very true.

 

I've found this as well. The alternator on the right has a different casing. You can tell because the front protrudes out further and it takes a larger bearing. I generally sell my 140 alternators only with the stock case. If a customer sends in an alternator with the aftermarket case I can only use it for them if they choose. I don't take those in as cores. The Ebay and Bosch replacement alternators often have the aftermarket case. It works but only with a specific pulley.

 

Yup i see you finally are adressing your mistake.
On a side note you and your wife treat people like crap. I remember going rounds with you over this a couple years ago.
Now your alternator pulley has failed on the car i sold and you blame it on the alternator.
The alternator the pulley is on is a BRAND NEW OEM ALTERNATOR. And by the looks of the cracks you machined the belt grooves way too deep and it couldnt handle tension.
And yet you want to continue to treat the new owner like crap with excuses and lies.
Postcards for christmas dont make it ok to act this way.

 

You need to get a grip. This thread is from a year ago, and it was NEVER our mistake, the pulley is designed for the stock alternator. I took it upon myself to figure out the issue with the Ebay alternators.

Funny thing is the lady on the phone said she literally had to cut the belt off because the tension was so ridiculously tight. NOT our fault that you sold the car to someone and it immediately starting failing. I do not care what lies you want to tell the new owner, I have your correspondence from when you contacted me about your problem with your aftermarket alternator. I will gladly share it with her and the forum.

You bought the kit in 8/2014, if there was an issue with the manufacturing it would have shown up long before now.

 

You crack me up. Always excuses.
Im sure this all works great on your shop cars that get 10 miles a year put on them of heavy heavy track use.

 

That is funny, Elaine spent 20 minutes on the phone with the lady and I responded to both her emails to tech. We could have easily said, "not our problem, part was sold to the previous owner of the car".

You would have never emailed me years ago if you had installed the pulley on a stock alternator. YOUR fitment issue was due to the use of an aftermarket alternator, which you were trying to claim that I should have bought every variation of and tested the pulley on. The product is designed for the OEM alternator.

You are the one that treats people like crap, but I will save all those emails and PM's for a different thread. I think people can see it for themselves just in your posts in this thread.

You are the one making excuses to the new owner, I am stating nothing but facts unlike your "alternative facts".

I will be following up with the woman that contacted us yesterday, as I am sure there are a lot more details to come about from this. One failure out of a 1000+ kits sold tells me installer error. I can see from your build page there was no adjustment on the alt bracket, which is lending credibility to the lady telling us she had to cut the belt off.

BTW my 20B is a street car, it has not been on the track in years. You can't just make up stuff and get away with it.

 

I generally have no interesting in getting into the middle of such a conflict, but in this case
I will comment because I run the Banzai pulleys without any problem and I have only had the best of customer service and gracious help from Chris and Elaine.

SilverFD, you are going to have to do better than that if you don't want to look like you are using Banzai as a scapegoat for putting together a car you sold with a flawed pulley/belt/bracket set-up. Banzai has a huge bank account of goodwill here that you need a better and calmer argument to be accepted.