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

So, the start of the very busy next 2 weeks with Health Check service every day.


And it couldn’t get started any better than this.


At the end, the first day turned into an emergency rescue service but both the owner and myself were happy to near-miss the disaster engine failure.



After the owner arrived at my place, went through the general Q & A session for about 30min to understand the previous service history, how the NSX was driven, driving style, etc.

This is also required to cool down the tyre before I can adjust the tyre pressure.


Then, went to the car and started the basic check up before I can decide whether it is safe for me to test driving the NSX or not.

Finished the front compartment area and tyre/brake basic checks so went to the engine bay and when I looked at the crank pulley, I immediately told the owner that I would not even start the engine.

The pulley weight was already completely dislocated and although it looked like fairly recent incident, I could see a hole on the TB lower cover.


I recommended the owner to flat bed the car to Norton Way Honda as they can do basic TB service quickly compared to my Engine Refresh service which takes long time.



It is best to check the state of the pulley weight from under the engine by wiggling it but you can do a quick check from the top by looking at the photos in this post.

http://www.nsxcb.co.uk/showthread.ph...2032#post72032


I normally apply my LED flash light from the top near the ACG and look at the crank pulley.

The weight has to be parallel to the pulley.


If you see even a tiny imbalance between the two, don’t even think about starting the engine.

If they are parallel, you have only finsihed 50% of the check and now you need to start the engine and once again use your flash light at the crank pulley.

Be careful with the spinning ACG belt.


The parallel line between the weight and the pulley should be steady with no wobble at all.

If you see a small wobble, your weight has already started to split.

The Crank pulley that came off from this NSX......


The weight doesn’t split from the pulley suddenly and it is gradual effect but once it happens, it doesn’t take long time to completely dislocate itself.


The owner knew about the story of the crank pulley but just didn’t think that it was already happening on his NSX.


The owner was very lucky because there was still thin plastic cover left between the dislocated weight and the actual timing belt so the belt itself was not damaged at all and we saved the engine from getting the valves bent.


Due to owner’s plans, requirements and etc, I agreed to fit my emergency spare crank pulley but mentioned it was best not to start the engine because of the hole in the TB cover.

The owner is already arranging the visit to the Norton Way Honda.

At the end, I think we spent more than 8hrs in the garage and although it was unfortunate to see the TB lower cover being chewed, it was great to complete the Health Check and emergency crank pulley service on the same day as well as saving the engine.


Long long day finally finished…

Four more NSX to be checked this week and six more next week….


Kaz