David Ashcroft
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- Joined
- Jan 26, 2014
- Messages
- 1,670
First start of the 91 ..https://www.youtube.com/watch?v=aLiSl9SBoso
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needs more heat and a muffler.. wondering how much prop these motors will pull.. good luck..First start of the 91 ..https://www.youtube.com/watch?v=aLiSl9SBoso
hi david, i run a 2614/3 (65mm dia) and a 2714/3 (69mm dia) on my mono with a VAC .91. good luck,keep us posted.mike.Michael from reports these nova91 donks are torquey .I only run monos i want to try a 2514/3 chopper for starters may reduce it to 62mm .
Or maybe a 2614/3chopper reduced.
dave,what are the rest of the spec for this engine?..Will do ...
Stock exhaust @ around 187-188 could possibly run a short pipe ...
I think I will mod around 192 later and use other pipes also..
looks like blow down is 57. 188-132=57.a little low but i would try it.also depends on what rotor timing looks like.i really like to know how well these big alum rod motors will hold up.I have erased alot of the data for the 91 i would have to measure again..
But my engine has 188.5 exh and around 132 trans if i remember.. The blowdown around 27.5 ..which could be raised a little.
hi dave,spec's look good. keep us posted on how it performs,thanks,mike..................
micheal this is new motor mods for my 91
raisred sleeve .0.008thou
exh - 188.7
trans - 136
rotor open 214
rotor close 70-- cut 4 degrees more
squish 0.013" 9.4CR
216 duration
havent tested yet ...
micheal this is new motor mods for my 91
raisred sleeve .0.008thou
exh - 188.7
trans - 136
rotor open 214
rotor close 70-- cut 4 degrees more
squish 0.013" 9.4CR
216 duration
havent tested yet ...
Thanks gents..
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