OEM 155 Pump Talk
- Thread starter DAG
- Start date
davidescu_radu
sea riders
- Location
- Constanta,Romania
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
So how does it seal up.
davidescu_radu
sea riders
- Location
- Constanta,Romania
Same as waverunners pumps - the wear ring is going inside pumpsue about 3-4mm - a bit of sealant as yamaha also uses from factory on runners and you are good to go - this is firs one but future ones will be powdercoated in different colors
- Location
- Winter Park
Seems like a good idea to me- technically you could tap the pump shoe for the long bolts to thread into to make sure it’s perfectly tight. Pump shoe install would have to be absolutely perfect though.
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davidescu_radu
sea riders
- Location
- Constanta,Romania
Yes - you have to install the pump shue with entire pump fitted - shaft/midshaft - put the sealnt/glue - then bolt everything and let it dry - but the result is perfect alignment
davidescu_radu
sea riders
- Location
- Constanta,Romania
i've did it this way and no problem - pumpshue bolted on the hull only with the 2 bottom bolts that i've had access with the all pump on - then after all set/aligned -done the rest 2 bolts
davidescu_radu
sea riders
- Location
- Constanta,Romania
on the upper side the pumpshue is very thin so no enough to drill/tap for lon bolts
davidescu_radu
sea riders
- Location
- Constanta,Romania
RRP
davidescu_radu
sea riders
- Location
- Constanta,Romania
i'll produce more this winter - same yamaha oem style - no rubber ring
All summer i have tested one on my rickter fs2 5mm stroker - after having to work hard to enlarge the intake duct(was design for 144) to fit and align the pump/pump shue and engine ( because with 155 pump - you need a 10 mm longer shaft for full splines engage, also pump is larger in diameter and then your shaft on pump side will be lower than 144 so will enter the hull on more angle - so you will need to lift a bit the front of engine to be all aligned) - so after all this trouble - 155 with right impeller is super
You have to use sealant between wear ring and my pumpshue - and after final alignment and sealed - when you want to work on pump/impeller leave the wear ring in place and all will be easy to reinstall - so you need to have the blaster 2 style 8mm long bolts and blaster 2 wear ring with treads on it for long bolts
All summer i have tested one on my rickter fs2 5mm stroker - after having to work hard to enlarge the intake duct(was design for 144) to fit and align the pump/pump shue and engine ( because with 155 pump - you need a 10 mm longer shaft for full splines engage, also pump is larger in diameter and then your shaft on pump side will be lower than 144 so will enter the hull on more angle - so you will need to lift a bit the front of engine to be all aligned) - so after all this trouble - 155 with right impeller is super
You have to use sealant between wear ring and my pumpshue - and after final alignment and sealed - when you want to work on pump/impeller leave the wear ring in place and all will be easy to reinstall - so you need to have the blaster 2 style 8mm long bolts and blaster 2 wear ring with treads on it for long bolts
instead of lengthening the drive shaft, have the mid shaft milled back 10 mill and add spacers to accommodate the shaft splines engagment , also you can split the difference with adding shims on the motor side of the coupler, ada and cold fusuion offer drive coulpers with different offsets that will fix this alignment issue , cost?? what avenue is worth it ? custom length drive shaft probably the cheapest. 155 is for sure the way to go..
davidescu_radu
sea riders
- Location
- Constanta,Romania
yes - in my case was much easy to fabricate a custom midshaft from a yam wave raider midshaft - because i have a friend that has a metal working lathe at home - so no needed spacers on back of couplers
Looking at this again, wouldn't it put the pump quite a bit further forward so that the mounting holes don't line up?
Also, what do you seal with?
- Location
- Corona, CA
Question for when tapping for dual cooling...
Are guys tapping for 1/4" or 3/8" NPT on a 1/2" barb fitting? Seems a little silly to restrict a 1/2" barb fitting with a 1/4" thread, but I figured I'd check and see if I can get any input before doing it on mine.
Are guys tapping for 1/4" or 3/8" NPT on a 1/2" barb fitting? Seems a little silly to restrict a 1/2" barb fitting with a 1/4" thread, but I figured I'd check and see if I can get any input before doing it on mine.
1/4 NPT
- Location
- Corona, CA
Cool, thanks @JetManiac !