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Old 11-23-2011, 08:24 PM
  #54  
MTK
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Location: Whippany, NJ
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Default RE: OS 33GT Gasoline Engine for Pattern


ORIGINAL: MTK


ORIGINAL: clivemc

MTK

thanks for the p[ostings, looking forward to your results. Mintor will cyustom make any header for you. contact your local dealer and they can get one im sure. But the adapter you have made looks good anyway
I just got word from Claudio Magni one of the owners of 3M Mintor. The headers will not be available until the next shipment to the US, sometime next spring
Ran a piped set-up today. The 18x10 was turned around 600 rpm faster (8300 +/-). Engine was very happy turning that prop at that rpm.

Then jumped the load to a 20 1/2 x 12 MDK hybrid. RPM decreased about 1000, down to low 7's. But the engine lugged....... juuust a bit too much load. Maybe better when the engine is fully broken in.

I don't have a 20x10 ready yet but I think that size will work fine. I also think a 19x11 apc will work well. I'll have to get one from Ed and see some real numbers. The YS170 turns a 19x11 around 7400 on 20% nitro so that's a decent measure of power that I'm looking for