Recent content by 550kid171

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JM HD driveshaft for oem 155 pump in 90-07 SJ length 26 1/8” used for a season. One small mark on it from the prop rubbing. SOLD Skat trak e-75 155mm impeller 7/13 cutback 5mm $325 + shipping.

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Old style thrust trim for 144 but the ring was milled and sanded to fit a 155 nozzle. Could be shimmed back down to run on a 144/148 again. Needs a new cable $250+ shipping

e75 6/12 cutback 5mm skat for Yamaha 155 pumps. Only ran for a few hours before switching to another prop. Bought new about a year ago. SOLD

Only have the race gas domes

No

Et 967 stock stroke short block. Cases were done by et early 2020 and it was assembled last June, hot rods crank, at 11.3 hours right now, race gas domes. Located in Utah $3500 + shipping and PayPal fees. Would possibly trade up towards a 900

Clean set of dual mikuni sbn44s with a R&D manifold port matched for vf3 reeds Just went through them this summer before I put them on a new motor and have only had good gas though them since. $400 Jetting is at 115M 125P 2.3 N/S 95g springs

I would say the pump isn't letting the motor rev up off the bottom to full potential with a stock bore 155 nozzle. Bore it to around 88-90mm and it should be a huge difference. Tuning the pump takes some trial and error but its necessary to get the correct load on the pump.

What is your reduction nozzle bored at?