Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Time to take the compression after the service.


Before the service:
[psi]
#1: 240, #2: 242, #3: 248, #4: 239, #5: 244, #6: 245


After the service:
#1: 241, #2: 244, #3: 244, #4: 241, #5: 241, #6: 241



Again, the absolute value is not that important because it will change depending on the cranking rpm, engine temperature, etc and the deviation between the cyl is the key.

I’m so glad to see that the data is so close between each cyls and very happy with the result considering the high mileage on my engine.

Probably, the most rewarding thing is that the sound of the engine is much quieter than before.
Addition to this, it is nice to see how clean the engine is, especially around the cam cap and Oil pan area.

If you have later spec LMA, you don’t need to carry out Stage 2 Eng Refresh at every TB/WP service and just stick with Stage 1 but if your engine is still using the old LMA with lots of mileage, you may want to consider it in the future.

I haven’t activated the VTEC yet so can’t test the Spool valves but no point in going out for test driving session with so much dirty water on the road today.

Apply silicone grease on the new rubber seals at the IG Coil covers to keep any moistures away from the IG colils and the spark plugs.

Tyres back on the chassis, torqued the suspension parts under 1G and all of the engine bay parts are now back in place.


Just need to reset the ECU and dress the engine.


Managed to check the two A/C CCU board while keeping the Evaporator temperature higher this time.

Thank you to the two owners allowing me extra time for the service.


Strictly speaking, as I removed the rear sub frame from the body, I should carry out the alignment service but from what we saw on many NSX that went through the same process, the alignment was close enough between before and after the service so I won’t be doing it on my NSX at this stage.


I’ll be doing the alignment service once a year on my NSX any way so once the weather gets warmer, back to the alignment platform.


My tyre will worn out by that time so hope to get the new ones in time.


As always, there is no way I can post all of the photos that I took so there are lots of other parts that were replaced but not covered within this Blog.


Based on what I saw, I don’t think some of the parts were required to be replaced.


As same for all of my posts in the Blog and Forum sections, none of them will show the critical know-how or the special technique so if you are planning to do the same process, please be careful as the result may not be the same.


If you have been following my Blog, thank you for spending your time reading this long-long Engine Refresh Stage 2 process.


Time to start working on the other NSX that was sitting in my garage for a week now….


Kaz