Tech:Engine/K Series/Boosted K motors

Due to popular demand I am going to endevour to write up a new section here for boosted K motors.

This is going to be a work in progress and may take me a little while to complete it so please bare with me while I get it done. Once its completed this message will be deleted.

Cheers, Si (Taz_RX)

Firstly, obviously there are two way to build a "Boosted K motor" by using a turbo or a supercharger. For deffinitions or how each work (if you don't know and are intersted) please do a wiki/google search.

Superchargers:

What to use: The most common superchargers used on K motor are Toyota SC12 (4AGZE) and SC14 (1GGZE) units. These are readily available from import motors, wreckers etc and are quite reasonable priced. Others have used other superchargers like the AMR300 or AMR500 however both of these units are quite smaller compared to the SC chargers. This isn't to say they won't work though, its just by the time you get up in the revs a bit the small capacity of the charger may restrict top end flow. At the other end of the scale you could use a bigger charger like and Eaton M series (M90 from S pac supercharged commodore for example) which geared correctly could give great top end flow, however some boost lag would be expected in the bottom end of the rev range. Choosing the size of the charger, and the gearing used is just like picking a cam shaft or turbo A/R ratio. It really depends on what you want to use the car for and where you want your power range.

How to mount it: The easiest way to hang a supercharger off a K motor is to source yourself an air-conditioning bracket off any K motor. With a few minor mods to the bracket and/or the charger itself you can mount the charger in the position normally occupied by the A/C pump. As the mechanical fuel pump attaches to the block inside the A/C bracket, removing the pump and blocking its mounting point with a plate would be required. You should be upgrading your fuel system anyway so this won't be an issue.