Been on the preparation trail again today
This time service the engine oil/filter, investigating what is under that big plastic cover/tray
Tray is simple to remove and everything you are looking for re oil change is easily accessible - see pic
As everyone knows ...... over time the H6 engine will see some of its oil regulated functions not functioning as they should which effects cam timing AVCS function and more. Gook and Gunt begins to block filter screens and small oil passages .......... therefore I initiated the oil change with a can of AMSOIL ENGINE FLUSH. Now if you dont know about this product then just know it does a MASSIVE cleaning job inside your engine and dont use it on an old motor or you might just accelerate your oil consumption massively. - see product pic. Note to Ed from XTR, you should recommend this to your customers to improve AVCS function and prevent problems with oil screens clogging
The oil looked pretty clean until the hot idle period had finished - gunk was loosened from all corners of the engine. Its a very smelly process with vapours coming from everywhere including the exhaust while the flush is working though the motor
I refilled with PENRITE HPR5 (extra 10) Synthetic oil - running very sweet -
http://www.penriteoil.com.au/products/motor-oil/hpr/hpr_5Next task, investigate those idler pulleys for wear in the bearings, sure enough both of them not running smooth and days about done. So out with some 6203 sealed ceramic bearings (I have those things lying around

) rated at 450000rpm and replaced those idler pulley bearings. I pressed out the old bearings, cleaned all the dust out of the back of the pulleys and pressed in the new bearings. I can be sure of 2 things now - 1 the only H6 in the world with ceramic idler bearings and 2 I have idler bearings that will NEVER fail in the next 500 000km FWIW! At $130 each these arent for everyone and I have plenty in stock should you want your Lib idler bearings the best they can be.
Now after the tray was removed I can see some REAL POTENTIAL for improving airflow around the sump, manifold area. I believe I will manufacture a custom aluminium under tray (optional) for those with supercharger kits to greatly lower the oil temp of the sump, as the current no airflow situation certainly allows a LOT of heat soak in this lower area. A must for those in hot climates. Will get to this one soon
Final thing - the engine drive belt is having problems, there is NO problem with belt, tension "seems" OK but there is a LOT of wear in the tensioner pivot joint. See image of belt contact (rubbing marks) with front of timing case. The only conclusion is that tensioner needs replacment. Things like this can become even more of a problem once an SC has been bolted on - so sort it now and it will be all happy days later.
Finally - uploaded XTR tune V3.0 B yesterday, really loving this tune, very fuel efficient in lower engine speed range and ultra smooth but with excellent FBW response. TOP WORK Ed, now we just adjust tune for all out power and performance from 4000 - 7500 rpm, the low end is PERFECT. Ed, gets this stuff done right people, talk to him if you want Liberty ecstascy
Note: The spark plugs were replaced a few weeks ago - all good there.
Are we ready for the SC kit yet - nearly!