Originally Posted by
Roelof
So as I say... commercial bulsh*t.
But I do find it a positive thing that a manufacturer dares to say the steel bearing is the right one, ceramics are so over rated. And what is a new designed crakshaft? If you put it next to one of a 2102 it will probably look the same. But the extra low/mid torque says there is something done with the timings
Hi Roelof,
Received the first batch of original OS R2103 and indeed a different sleeve and different crankshaft.
The changes are small but I think effective.
1) The crankshaft has a different timing(less open), this probably done to gain torque and fuelconsumption. A little extra work has been made behind the crankshaft counterweight(like I normally also do on my engines).
2) The liner has a slightly different shape on the exhaust. The central upper section is a little wider but the total exhaust area is the same as is the timing. Intake 7 ports.
I have some available
Here for who is interested.
I have decided not to update immediately our VSR02 engine but first test this solution and have some specific engines ready for the Worlds.
Rody