612 Sessantas and OTOs with HGT1/HGT2

In the past I had postulated that the Sessanta/OTOs with 599 twin disc clutch and gearbox case had quicker shifting like the 599 HGTE when fitted with HGT1 (Sessanta) and HGT2 (OTO). Superfast 1 fitted to those 612s gave 100 ms minimum shift times, the same as the standard 599 shift times. In late 2009, the 599 HGTE came out with 85 ms min shift times. I thought the HGT1/HGT2 packages gave a similar decrease in min shift time. Turns out I was wrong. The HGT1 and HGT2 packages eliminated the quicker shifting TCUs of the HGTS/HGTC packages and eliminated the package specific Shock Absorber ECU, as well.

Here is the documentation on that change, also explaining that non-OTO/Sessantas fitted with the F133H engine and its required new TCU to match 7.3.2 already improved shift times. Going to Superfast 1 on the OTO/Sessanta further speeded that shift time to 100 ms.

Summary with Numbers from Ferrari:
612 standard min shift time: 180 ms
612 HGTS/HGTC min shift time: ~160 ms (~10% reduction)
612 7.3.2/F133H min shift time: ~125 ms (~30% reduction)
612 OTO/Sessanta min shift time: 100 ms (including HGT1/HGT2)
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Bill- The 575M min shift time is 220 ms, the 575M HGTC, Superamerica, and early 612 all had 180 ms min shift times. All well documented.

360, Challenge Stradale, and F430 are all quoted as 150 ms min shift time by Ferrari.

Have never seen any explanations on changes for the F133H engine, except for the change to Motronic 7.3.2. Hardly seems enough to warrant a new engine designation, though, and it did not change the engine designation for the 599 when if went to 7.3.2.

For that matter, I have never seen an explanation of what changes were made to the F133E 575M engine when it became the F133F 612 engine. Have that for the F133G Superamerica engine, which was basically a hot-rodded F133E, but not for the F133F 612 engine, much less the F133H. I know the intake manifold runner sizes were increased for the F133F 612 engine and Motronic injection/ignition curve changes were made, but that is about all I know.

 

Adam- Ferrari claims 150 ms for the 360.

 

Moe- The 612 OTO did not get Superfast 1 shifting before the 599, which had it from the beginning of production with both Motronic 7.1.1 and Motronic 7.3.2.

Read the attachment at the top for your other question. No changes were made to shock ECUs or TCUs for HGT2.

The 2009 reference you saw, which I posted, was comparing shifting to pre-OTO 612s.

So no, it is not possible OTOs had 85 ms shifting. I was wrong when I said that.

 

Sean- Affirmative, you have the 599 twin plate dry clutch, 599 gearbox case (with 612 ratios and parts), and Superfast 1 TCU with 100 ms min shift times. CCMs, too. The Sessantas were effectively prototypes for the OTO.

 

Jeremy- I am not sure exactly when F1-S was introduced, but probably the same time as the HGTS/HGTC packages around late 2005/early 2006. By February 2006, F1-S was featured in all the owners manuals for European and US models.

If your 612 was built in early 2006, I believe that is before the F133H engine came out in 2007. Shift speed on yours should be 180 ms for a standard 612 and around 160 ms for an HGTS/HGTC. Even 180 ms is pretty quick. The F430 was rated at 150 ms by Ferrari, not much quicker. My 575M at 220 ms will rattle your teeth at 7500 rpm when shifting in Sport.

The engine Type and number can be read on a stamping on the engine. Kind of hard to see, but here are some 575M photos (same basic engine, F133E vs F133F)) to show you where to look with a flashlight. I believe you will see F133F on the stamping, but let me know if you see something different.
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Jeremy- Affirmative, a different TCU with updated algorithms to go with the new Motronic 7.3.2 ECUs that turned the engine into an F133H. The old TCU was not compatible with 7.3.2. When the Sessantas and OTOs introduced the 599 gearbox case and twin disc clutch, the TCU was upgraded to include the 599's Superfast 1 software.