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Discussion in '456/550/575' started by Patrik550, Aug 26, 2020.
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They actually did not alter the firing order on the 456 GT he was driving, but on the 456M that followed.
This is by far the best automotive YouTube channel.
A very fair overview of the 456 and a fascinatingly simple fix... although my 550 doesn’t seem to be lacking grunt whatsoever, guess what I’ll be checking under the hood this evening?!
Lol looked at mine and theres a little play.. but the adjustment on mine on the passenger side requires you to adjust the actual heim joint on the end of the cable.. making it a bit trickier
Yea mine seems to be the same, I have a 2003.
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They made some "improvements" over the 9 years between that one and yours.
I'm going to save that... another symptom of throttle bodies "out of sync" is when the engine "bucks" when moving a low idle speed.... this is a common problem on the V10 Dodge Viper...
Ill have to check this out on mine. Interesting that lately there seems to have been quite a bit of videos and articles geared towards the 456's.
I particularly like the comments about 50k mileage. That will confuse a lot of potential buyers
Who knew these beasts were barely useable before hitting break-in at 50k miles?
As long as the valve guides were a good set.
Can anyone speak to the technical rationale for saying these aren't broken in until ~50k miles?
Really nothing more than Tyrrell's personal opinion. By feel, he seems to think they come alive after, what in FerrariLand, would be considered most of their useful financial lifetime. Technically, not a leg to stand on that I know of.
I for one like that perspective cause I plan to drive the bejesus out of my 456.... and I hate to think that it's "all used up" when it hits 50K miles....cause that won't take me many years!
It’s a good perspective to have. For my side, I know that my old 348 made more power after 50k miles than it had at 30k miles. Impossible to prove that there weren’t other factors, but seemingly the miles hadn’t stolen any ponies.
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He also talks about coated parts when Ferraris have iron/steel wet cylinder liners and aluminum pistons. So no special coating necessary because the block is not just cast aluminum like whatever car he was thinking about.
Good practical mechanic, though. Lots of old wives' tales out there about Ferraris.
Is the F113 engine not Nikasil Alloy liners?
Adam- If you mean the TR engine, no, it has wet liners like any other Ferrari. If you meant F116 for the 456/456M, they also have wet liners.
Typical V12 456/550 issue, with the 348 and 355 every time the belts have to be renewed, the throttle cable has to come off because the engine comes out.
And needs to be adjusted a bit when the engine is reinstalled.
So no quick wins there, too bad...