jaysgottaredtop

i was in a jam recently and figured out that using the KA24DE P/S pump AND PULLEY on an SR20DET fits fine. i can't find ANY info online about this specific conversion (since everyone claims you have to use an SR pulley), so i'm making a new thread for it. if anyone else wants to chime in, please do!

the SR P/S system has a 4-rib crank pulley and a 4-rib pump pulley. the KA P/S system has a 3-rib crank pulley and 3-rib pump pulley. the KA pump pulley doesn't line up with the SR crank pulley... unless you flip the KA pump pulley, then it lines up straight with the front 3 ribs on the SR crank pulley. from there, it's just a matter of getting a 3-rib belt in the correct length (which turns out to be around 945mm or 37.2").

you'll need:
- SR20DET
- SR20DET P/S bracket (the fat cast iron one that bolts to the block)
- SR20DET tensioner/bracket (or you can ghetto rig your own tensioner like i did; the KA tensioner will not work with the SR pump bracket)
- KA24DE P/S pump
- KA24DE P/S pulley
- KA24DE P/S lines
- MasterPro Belt # K030365 (or any comparable 3-rib ~945mm belt)

to install:
attach the KA pump to the SR bracket and remove the KA pulley from the pump.


install the SR tensioner OR be ghetto like me and make your own tensioner with a long bolt and some sort of closed-end tube against which the bolt can push and pivot the pump.


install the KA pulley *UPSIDE-DOWN* onto the KA pump. yes, its still spins freely.


grab a 3-rib ~945mm belt from the parts store. i got a MasterPro K030365 (3-rib, 943mm).




install the SR bracket, KA pump/pulley, and new belt onto your SR.


the flipped 3-rib KA24DE pulley will line up perfectly with the front 3 (out of 4) ribs on the SR20DET crank pulley.


now your entire P/S system is practically identical to the stock KA24DE system, so it's just a matter of hooking in all of your stock KA P/S lines and adding fluid!



TL;DR for the lazy folks: SR engine, KA pump, flipped KA pulley, MasterPro K030365 belt.

hope this helps. feel free to ask questions, i'll do my best to answer them!

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