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Daniel When should one look at that oil pump chain tensioner on a 575? There is not much mention in the WSM. thanks steve
Image Unavailable, Please Login This is what mine looked like when I did the front cover bearings a few years back. Replaced both it and the chain. 20,000 miles in the car at the time, first 10,000 by the previous owners, second 10,000 by me. I’m due for belts this winter and will have added another 30,000 miles since and I’m curious to see if the chain guide is worn out again.
Hello Bradan, Can you please send a list of customary items for major service for 1995 456 GT. In addition, any other pointers, FYI and recommendations you may suggest from your experience. Thanks in advance. MK
David- The factory marks on the front of the cams are assembly marks so you do not bend a valve when installing the cams. Ferrari scribed timing marks on the rear of the cams when they were timed at the factory, but you usually need a mirror to see those with the engine installed. Plus that is a really small circle for accurate timing. First time around, degree wheel and dial indicators are what the pros use, and after that you can use a lock and swap if you still have her 5 years from now.
That’s how I was taught, I use a checking valve clearance also on #1 and #7. I experimented with different cam timing and achieved some good results from a performance standpoint but often set off check engine lights in the process. Thanks for your insight
David- Ferrari did that, too, when they hot-rodded the F-133G engine for the Superamerica. The cams had the same specs as the 575M cams, but timing was advanced about 7 degrees.
