Hi Bob,

there is a very interesting point in your comment but I suppose it should be placed in a completely new thread... this thing related to the Inlet Ports in your new Reconditioned Head.

I heard some time ago that one of the best ways to increase notoriously the power of an engine is to improve both, the air intake and the exhaust.

In my mind was always the image of changing the ducts for intake, with a new air box and maybe a snorkel, and also the extractors...

After reading your threads I realised that all this improvements would work better if in addition the ports for the intake but also the ones for exhaust are enlarged...

Nice point...

Quote Originally Posted by Bob View Post
I went to Melb this Weekend and filled up with Gas at Calder Raceway and it took 112 Litres to fill the Gas Tank from empty. Usually it only takes105 Litres.
I did not worry about the extra Gas as I still had 50 K's to go before I parked it.
I just recently put a Reconditioned Head on (290,000 K';s). This Head had the Inlet Ports enlarged which allows better breathing and has made a big difference in the Power.
I always run a Tank of Petrol through to every 4 tanks of Gas. Also my Patrol starts on Petrol and switches to Gas automatically after a short warm up.
Been tempted to put on a Larger Exhaust System but the Truck is only used once or twice a month for Camping and Fishing trips.
Should outlast me Ha Ha