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K Swap Knowledge Dump

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  • Slowpoke
  • PipPip
    • Group: Members
    • Location:Central North Carolina
    • Drives: 2016 Accord, 87 CRX Si (2 - neither running), 60s Vettes (2), 67 911S, '70 914-6, '95 F150.
    Garage View Garage

We got the K Tuned relocation kit installed and also increased the size of the bolt from the 8mm included to 10mm.  we also noticed the bolt does not go into the water pump housing very deep so we are going to source a 120mm instead of the included 110mm length. 
changed a few other things today.  RDX thermostat so the outlet points down instead of up and a modified TSX water manifold.  The one on the JDM K24a has a provision the EGR and is much larger.  This one has the heater water port welded shut, since I do not use the heater.  Water temp sensor installed and the block bracket for the passenger side mount.
didn’t get as far as we hoped du to the work on the K Tuned kit and alternator.  Next we will get the motor off the stand and put the flywheel, clutch and trans together so it’s ready to go into the car.

No worries re the RDX thermostat. Just want to make I understand correctly. Some of the architecture and nomenclature is unfamiliar to me. And I have no idea re possible interchangeability issues.

On the “water manifold”. I picked that up from your post above about using one from the TSX. I’m assuming it’s what Honda calls the “water passage” which has the water pump mounted on one side and the thermostat on the other. If I understood what you meant, I’m looking for confirmation an RDX thermostat will mate properly with a TSX water manifold / passage.

Thanks for your patience CSP


Yes it will mount to the CRV and TSX no trouble

86 K24 Powered CRX SI (SMF Solo2, HPDE-4 NASA & TA-A Time Attack

85 CRX DX totally original
07 Harley FXST Softail

2021 Tacoma Tow/Daily