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Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Health Check, Brake OH, Koyo Rad, etc 05

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As mentioned previously, this engine is using the metal gasket on C30A spec.
Looks like it also used some sort of head gasket seal treatment (the dark brown bits, it's not engine oil. If that was the case, in big trouble...).
Again, I hope the deck was properly re-surfaced to create good seal.




As seen on some of the NSX engines, the terminal white retainer was missing from one of the connector at the rear bank.
Also, probably not easy to understand from this photo but the IG harness holder bracket was already broken in two pieces.
Not fun of wrapping the tape with the engine inside the bay so going to leave it as it is for now.






All of the spark plugs were tightened using way too much torque…..
I know it’s FI application but no need for this.

The plugs at #1 and #6 cyl smelled awful……
The one at #6 cyl showed bit extra carbon build up compared to rest of the cyl.
The ones at #2 and #6 showed lots of oil at the threaded body.




The rubber tube of all six IG coils were very loose.
Potential cause of misfire and in fact the one at #2 showed split.
The spring inside the IG coil was fine at all 6 coils.






Noticed some sort of coating or something entered the IG coil area changing the colour at the back of the cover as well as some of the IG coil tube.




Looks like the rust at the three rear bank IG coils were smoothed out in the past.....
Not too bad though......




While the TH body and butterfly looked to be clean, they were in fact covered in some sort of oil, possibly from the aftermarket air cleaner.
Personally, unless you are using 100% WOT at every rpm range, I would rather stay with the OEM filter.

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