Over the last couple years the priorities in my life have changed. Had Matrix Garage grown big enough to hire enough employees and leave them to running it while I pursued other things I would have happily taken that route but it has generally stayed just big enough to keep me working overtime. 
I have decided to start focusing my carreer and passions elsewhere and that means that supporting the AW, AE, 4A and related communities has had to be moved much lower on the priority list. I have decided to keep the store up to provide parts that only we offer, or other things that are hard to come by elsewhere. You will notice many big name, readily available products have been taken down and we will continue to do so. It's just not worth our time trying to compete with the big corporations selling at cutthroat prices and it just takes up more of my time. 
I will try to keep providing those parts that we make or that we have developed and sell as a service to the community but understand that now this is something I do in my spare time because I don't want to leave people hanging. 
I try to make shipments and process orders at least twice a week. If you want Amazon next day shipping buy from Amazon. I will do my best to keep order time and customer service at a reasonable level but have some understanding. I am not making money on this and it takes away from my other work and other issues that are very important to me right now. 
I have always wanted to make our designs and other information open source and available to the community but to do so properly would take a lot of time making sure that models and drawings were complete, accurate, or properly described. To go through everything and make sure it was something that I felt comfortable releasing to the community. I would love to find someone who was willing to help me do this. Someone in engineering school or passionate about this to help go through 3D scans, CAD designs, and information to prepare it. If you are interested feel free to email me. 




16 valve 4AGE Distributor rebuild kit


We have sold out of these. Because the individual components are readily available and we make so little on them it's not really worth putting the kits together. I will keep this product page up as I intend to post the part numbers for the components we use to make the kits as soon as I get a minute. 


6000RS Koyo 26x10x8

Mcmaster 5972K81


10 x 20 x 07ADL – NBR Nitrile
10 x 20 x 07ADLV Viton

O-ring for cap
78mm ID
3mm width
Global Oring PN
McMaster PN

O-ring for dizzy into head
28mm ID
4mm width
Global Oring
McMaster PN

28x4 is very snug and can be a bit tough to install the first time. Make sure to lube it up real well. A slightly smaller width may work fine and be a little easier to install.

4mm Dowel pin.
4MM diameter, 18mm long 316 stainless steel
McMaster part number 93600A455

This part needs to be pressed or hammered to flare it to fill the bores in both the shaft and the gear. If done properly this should eliminate all possible movement or flex.
Most kits use a slotted spring pin as this is more amateur friendly however we had concerns that it could allow play between the bores if diameters were different, or flex in the spring pin that could alter timing signals.
The solid pin does require more skill and likely has a greater chance of problems if not done perfectly. If you are unsure about your ability to flare the pin properly you might consider using a spring pin or paying a professional to install and flare the solid pin.



This is a full rebuild that should work on all 16 valve 4AGEs.

Includes the cap o-ring, dizzy to block o-ring, inner oil seal, bearing and a crush pin.

Some kits use a spring pin. This is probably more user friendly and harder to mess up but if done right the crush pin will mechanically bind the gear to the shaft much better by flaring out and filling any gaps in the bore. This is nearly identical to the OEM pin.


I have started a rebuild guide here and will continue to improve it as I have time.


List price: $0.00
Price: $10,000.00
Weight: 0.5 lb
Dimensions: 2 in × 2 in × 2 in

courtesy of