A lot more progress tearing down the motor ready for the thicker head gasket and head studs. As you can see the condition is great for 121,000kms and a lot of track days.
The head gasket I purchased is to suit an 81mm bore whereas OEM size is 78mm. Speaking with my tuner, a machinist and Cometic (gasket manufacturer) they all advised this oversizing will be fine. This does slightly concern me as R’s Racing Products and Monster Sport both list 81mm bore as “bore up” or oversized bore spec for us non-Japanese.
I also fit the baffled sump plate from R’s Racing Products that I’ve been holding on to for almost 5 years now…
I managed to find the ECU pinout in an obscure Facebook group buried in the comments of a post from 2014. God bless Ka Po W and his Yellow Power Ranger. Wiring diagram table to come in my next post.
