Newman, Four piston rings? I didn't know anyone used 4 anymore? Explain. Are the bores Nikasil or iron liners? I would love to get my mits in there. Ago
Ferrari went 3 rings on the Testarossa. I hate 4 rings. Iron liners. Rings dont rotate. Perfect example....When I worked for Ford there was an engine recall on the 302 lincolns. At the factory a machine would install the rings on the pistons with all the gaps lined up followed by people manually orienting them prior to installing in the engines. The bean counter determined they could skip the manual step and install them lined up because they rotate anyway. The engines consumed oil so the recall was for us to take the engines apart and orient the gaps and put them back together. Think that paid off for ford? lol Oil ring end gap positioning around the wrist pin area is essential or you will have oil consumption.
Liners are machined outside of the block then under compression from a cylinder head clamped on top, they distort causing high and low spots, out of round and taper enough to make you lose sleep at night. You need to machine them in the block and the bore they ultimately live in using a torque plate. Its the only way to get a straight bore.
Well there you go but why specific to 12 cylinders? Edit: I think you meant in all cylinders rather than specific to 12 cylinder engines.
Is that about where the oil scraper rings stops at TDC? I'd say oil burning above that point and simply inadequate oil control at the top area of the cylinder.
Any engine, any brand. But after you machine a liner in a flat 12 for example, check it and then move it to another hole and check it again its changed shape. Gotta go back where it was machined and facing the same way it was when it was machined. 308 is no different, daytona, etc etc. Anything ferrari with an iron liner that drops in by hand changes shape drastically once its installed with a head on it.
Diesel engine mechanics always mark their sleeves to put them back in the same spot. You only turn them if you have a protrusion problem or if you want to change the outside pitting spot to another place to extend usable life. An old shoe does'nt fit to someone elses foot.
Sequence numbers for the coach builder to make sure the fitted parts make it back to the car they were fitted to prior to paint. This is a great way to tell if a car has its original parts indicating it hasn't been in a serious accident. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
The sequence number on the chassis isn't always easy to find like in this case. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Rear fire wall in an injected car has the upper panel in aluminum with a pre-painted layer of foam which is then installed after the car is painted body color and black. To make the foam coating look new its best to just remove it. The pad is indented where its pressed against the structural tubes. The 76 BB512 prototype has a one piece rear wall and luggage shelf at the base of the seats that was put in prior to paint or undercoat. So the firewall was heavily coated with the spray insulation then painted. Interesting thing is Ive heard of 365 boxers prior to the first 512 with that foam pad thats between the tubes and rear firewall. So they have been changing the process back and forth. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
great documentation, Paul! You likely know more than most that judge these cars, I am sure that is right around the corner for you in your spare time, lol! I was impressed this year at Pebble. As my duties had me in only one judged section, I listened to each judges/car representative dialogue. When items are inconsistent with "known" standards, documentation always wins the day. Ferraris are consistently inconsistent. As always, keep posting and thanks! W
Some interesting running changes in the model. No reason I can see to black out the area that they did, the older cars were blacked our even more. Injected cars have an internal throttle cable that runs through a tube which you can see beside the shifter hole. The main floor pan has a moulded hump to clear the tube which carb cars dont have so no hump in them. Ferrari is using only modern seam sealer where panels join rather than a fiberglass strip like bonding strip then covered in a thick sound deadener sprayable material. When I see the differences on this 84 vs the 76 I do see a better built car, something no longer in the dark ages! Sorry carb'd guys! Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Great work, notice that there are bits of masking tape all over as well found these on my 308 and they had used tape to hold the harness.
Breaking down subassemblies for plating. Degreasing and removing the cosmoline (Dinoil) from the arms and hardware, brackets, axle flanges etc. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Metal work has begun. We need to replace some smaller tubes in the rad and battery area as well then the rest is straight forward paint removal. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
