Jetting following reed valve- expected increase, but really!
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alanscottj
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My scoot was dynoed by Readspeed and was running a 108 main (muggy 198), power jet was always closed, recently fitted reed valve and was expecting to up jet as recommended. Tonight, I have managed to up jet to a 118 with power jet open 3/4 a turn. Scoot is running fantastic, nippy low down as before, sits nice at 65. I'm not looking for a problem but does this sound quite a large up jet? Or is it about right? (Plug chops to be done tomorrow)
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Speed Demon
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Yes, expect a massive upjet on reed.
Get to SULK
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alanscottj
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So that's my main up jetted, will my needle/atomiser etc need changing too?Speed Demon wrote:Yes, expect a massive upjet on reed.
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coaster
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The dyno is the best place to get it set up but found that it was the main and needle position that needed changing on my Indian 225 when I fitted an MB reed block to it with holes in the piston and a finger port added. I believe it is compensation for poor airflow as the revs rise or somesuch 
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alanscottj
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Main jet has been increased from a 108 up to a 122, PowerJet is 3/4 open and still no sign of getting boggy at wot. Plug is still a light shade of chocolate. Going to borrow some bigger main jets off a mate and see what is the biggest I can get it to then work back down.
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alanscottj
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Up to 128 main now! Plug is looking nice though 
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Norrie Bodge
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Ordered my new 30mm PHBH with 125main for startersalanscottj wrote:Up to 128 main now! Plug is looking nice though
Should be here Monday
What you got timing set at Alan?
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alanscottj
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Honestly can't remember mate, pete at PSL set it last time I had scoot dynoed, 17 or 18 rings a bell ?Norrie Bodge wrote:Ordered my new 30mm PHBH with 125main for startersalanscottj wrote:Up to 128 main now! Plug is looking nice though
Should be here Monday
What you got timing set at Alan?
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Norrie Bodge
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Ok cheers m8alanscottj wrote:Honestly can't remember mate, pete at PSL set it last time I had scoot dynoed, 17 or 18 rings a bell ?Norrie Bodge wrote:Ordered my new 30mm PHBH with 125main for startersalanscottj wrote:Up to 128 main now! Plug is looking nice though
Should be here Monday
What you got timing set at Alan?
I've set mine at 18 ill see how it goes