MX5 Engine Refresh 01
by
, 27-09-2012 at 10:27 PM (5209 Views)
As this is NSX site, I won’t go too much in detail for non-NSX related service.
I’m just posting this for the owners waiting for my service so that
they have some idea on what is happening at my place at the moment.
Also, there are several topics that can be shared with NSX so
I’ll touch on these later.
For example, the internal engine parts were very clean even after 19 years with
just over 64K miles but the WP bearing was not smooth despite it was replaced
during the last TB/WP service and the coolant being replaced every 2 – 5 years.
Thus, my recommendation to replace WP at every TB service on our NSX regardless
of mileage covered.
There was some oil seepage from the valve cover gasket area but
not too bad.
Still, washed it down before opening the cover.
TB, cam pulleys, WP, etc removed.
About to take out the cam shafts.
Very clean engine even after 19 years.
It covered only 64K miles during this period so it is at low annual mileage but
I kept replacing the engine oil regularly and once again,
this photo proves the importance of doing so on low annual mileage car
even on a different engine.
Some of the NSX engines were much dirty compared to this one even
they were newer and at far less mileage.
Like the time consuming valve clearance adjusting process on our NSX,
the Hydraulic Lash Adjuster (HLA) used on this MX5 takes ages to overhaul....
16 of them in total......
Even replacing the engine oil regularly, the oil doesn’t flow freely
(should not as it relies on the oil trapped inside there to maintain
good valve clearance) inside this HLA so by the time when you
carry out the TB/WP service, it will be pretty much black oil inside.
Can’t wait to clean the internal engine parts again….
More to follow later.
Kaz