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2-stroke-addict

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  1. I have a 421 cub making 99.8hp on pump gas at 5800ft it has 35mm pwk carbs shearer s/b inframes and 4° advance on timing! If I get smaller cc domes to run 110 and bigger carbs will there be a significant gain in hp to justify the money spent? Will mostly be used for drag racing! Sent from my SM-G986U1 using Tapatalk
  2. I have a 421 cub making 99.8hp on pump gas at 5800ft it has 35mm pwk carbs shearer s/b inframes and 4° advance on timing! If I get smaller cc domes to run 110 and bigger carbs will there be a significant gain in hp to justify the money spent? Will mostly be used for drag racing! Sent from my SM-G986U1 using Tapatalk
  3. What would you say the jetting should be at? I am at just little over 6000ft. Could order the jets and get them so long will only be building it at the end of the year when I go back home Sent from my SM-G986U1 using Tapatalk
  4. Who's he? Sent from my SM-G986U1 using Tapatalk
  5. Thank you Sir Went and checked it out would be good enough for trail riding as far as I'm concerned with the 28's will probably get good fuel milage too compared to the 35's! Thanks for your info Sent from my SM-G986U1 using Tapatalk
  6. Sweet! Thought it would hold it back a lot performance wise Sent from my SM-G986U1 using Tapatalk
  7. I recently acquired 421 serval cylinders with a mx port from redline. I know it would be best to run with a larger volume pipe! 'N have shearer small bore and 35pwk on my redline cub and making almost 100hp on pump gas. But since i got the dmc's and some 28pwk lying around thought 'n might just run them till I can get a set of bigger pipes and carbs! Wanting to know what can I expect from this setup? Pump gas Vforce 4 reeds 4° advance timing 28 pwk Dmc alien Sent from my SM-G986U1 using Tapatalk
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