New CMB 91 MOTORS

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I am afraid thats just my insider knowledge. I will be racing with CMB in 2 weeks I hope to get a few inside photos.
 
There is no gpx kit as the 7 port liner does not fit the older cases. Only new complete motor.

The 3.5 7 port liner does fit the existing crankcase but you have been able to buy the gpx 3.5 for some time now.
 
It appears that the RS3-91 Does Away from the long M series Crank & needle bearing rear hsg? The GPX is the only New 91 engine that retains the long Crank shaft & the Needle bearing support rear hsg. Tony is saying 2/3 weeks before he has both new engines.
 
As far as I know the GPX TUNING KIT fits the M line case. The new GPX 91 Engine has a different diameter Brass liner. To fit the new case.
I will check with Mauro for a definitive answer
Ok, now it all makes sense...last looked at CMB's site a couple of weeks ago and didn't see anything about the M-Line/GPX connection.

So, as it stands now, the 91 GPX Tuning Kit exists only to retrofit the 91 M-Line customers have invested in?...

Thanks
 
The GPX kit fits older Evo Motors and the new RS.3 cases.

The latest GPX liner in the green motor has a smaller diameter of to match the pressed in aluminium liner
I got excited for a second, but looking closely looks like there is a pretty bad mismatch between the case and the aluminum liner. Look at the transfer port below the exhaust side eyebrow. Do you know of the aluminum sleeve can be removed?
 

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