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

The 20 years old WP.


It was not seized yet but the bearing was tired and not smooth.

It is normal to see trace of seepage but with this old design, the leaked coolant was actually landing inside the TB cover which is not good.


Later, Honda modified the design of WP and TB lower cover for this very reason.



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Tags: water pump

Categories

TB/WP/Valve Service , Engine/Tyre

It was also noticed on the WP as well as on the TB tensioner.

The colour and the material looked to be the same one as the melted potting from the CRK/CYL sensor which is normal on all of NSX but can’t remember seeing so much debris on the cam pulleys.


WP and tensioner will be replaced with the new one and will try to clean the cam ...

Tags: timing belt, water pump

Categories

TB/WP/Valve Service , Engine/Tyre

Despite the dirty valve covers, the internal engine components such as camshaft holders, holder plates, etc were reasonably clean that is very good news.


Backed off all of the valve adjusters and removed the TB.

Unfortunately, all four camshaft pulleys showed some sort of black residue on the ...

Tags: cam holder, cam pulley

Categories

TB/WP/Valve Service , Engine/Tyre

While removing the Eng oil cooler, noticed that one of the two coolant hoses was already deformed and fattening.


Sooner or later, it would have busted so glad that we decided to replace all of the coolant hoses this time.

As seen on other NSX, upper two bolts on the oil cooler didn’t have enough sealant.

Looks like it was not reapplied during the last TB service.
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Updated 18-06-2011 at 02:19 PM by Kaz-kzukNA1

Tags: oil cooler, valve cover

Categories

TB/WP/Valve Service , Engine/Tyre

Now the engine bay.


Due to the extra heat, normally, the corrosion on the pipes in this area is worse than others so I was ready for the extra time but didn’t expect it to be hours…..

The worst one was this one and most of other pipes were corroded as well.


Polished carefully as I didn’t want to create another leaking point.
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Updated 17-06-2011 at 11:38 AM by Kaz-kzukNA1

Tags: coolant hose, thermostat

Categories

Engine/Tyre , Cooling