Franko6
Vendor , w/Business number
The research has continued and results are just about in. Install and testing will be in about two months. The package will include several options and standards for mods of the following:subsonic44 said:Frank, I had seen one of your posts about oversize valves. I had also been reading on other forums about people using larger valves on the 1.9 AAZ head. How much larger do you think you can go over oem for valves on the 1.9TD AAZ (idi) and or the 1.6TD (also idi)?
Increased valve size to 33.5mm nitrided inconel exhaust valve.
Improved flow intake valve,
valve guides with better heat dissipation and wear characteristics
vastly improved valve seats
improved weight and strength valve springs
low weight valve spring retainer
modified porting
modified hydraulic lifters
high lift cam with several possible lift profiles
accumulator/pipe style intake manifold
performance pistons
There is more, but that covers most of the improvements on the drawing boards.