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Anyone know what the bolt size and thread pitch is on a 61x crankshaft? I have a bolt from my 62T crank and it does not fit.

I think they help if youre flopping a lot of backflips lol. But all I did was took some new heavy duty stainless washers from fastenal and roughed up both sides with a grinder to bite into the fastener and bedplate. Never moved a mm all summer after dozens of "backflops" lol

Ya i am, every time. And they both do what I said very consistently (35 pop to 30 and 35 pop to 17). Think i should get some new needles and seat?

They are popping at the same PSI, 35PSI each. No leaking before or after. my concern is that one, after popping (no leaking) seats cleanly and quickly at about 17psi. The other pops at the same 35psi but reseals at like 30psi. No leaking either

Sounds good. So even tho one of my carbs is popping off to a much lower number it should be fine since the popoff is the same and they seal cleanly (arent leaking or bubbling)?

Ok, so I'll start with yes, I've read basically every single carb tuning manual (Mikuni, Group K, Watcon, etc) like 10 times over, so I understand very well what pop-off is, how to adjust it, and have good idea of what my pop-off should be. However, my concern is that 99% of the resources I've...

Good to hear, thanks for the prompt response!

I was just going through my carbs (dual 44) cause they run like crap, and noticed that my valve bodies have different #'s. One has "R 1-2-3" and the other says "R 1-2-1". They look identical to me but I thought I'd ask and make sure, should they be the same #?? Sent from my ONEPLUS A3000 using...

Already got it figured out for my buddy. Thanks though guys, much appreciated! Sent from my ONEPLUS A3000 using Tapatalk

Awesome thanks buzzard! Sent from my ONEPLUS A3000 using Tapatalk

Anyone? :(

Hey Guys/Gals, A buddy of mine currently has a shortened ride plate in his ski and he is finding that it rides a little too nose high for his liking. The previous owner took a R&D plate and cut it down to about 16" long :( So he is looking to potentially buy a used OEM RN Rideplate, hoping it...

Where's the riding pics!!!?? Sent from my HTC One_M8 using Tapatalk

Just found out my 550SX high speed was way too rich, like nearly 2 turns out when it should be according to factory pipe, around 7/8 turn out. Would running really rich cause it to overheat? Obviously lean does, but ive never heard of rich causing overheating?

Bought it with the pipe too. Only thing I changed was the impeller cause the stock one was missing chunks out of it Sent from my HTC One_M8 using Tapatalk

Water flows fine out the pisser. I know that doesn't mean much. But it ran perfect last year hours on end, and I haven't changed any cooling hose routing. Sent from my HTC One_M8 using Tapatalk

I should say that it idles perfect, not lean, and I even tried richening the high speed 1/4 turn to see if it was running lean and it started smoking out the exhaust and ran worse, so I feel like thats a decent sign its not lean at the carbs.

I have a 550SX that has a Factory pipe and new stainless impeller with everything stock. Cranking compression is about 150 each, starts very easy, runs great, until it doesnt. Once it warms up its gutless, and starts losing more and more power to the point where you can barely stand up on it...

Thanks Serge! Now hurry up and finish yours so we can ride together lol Sent from my HTC One_M8 using Tapatalk

So its been quite a while since an update. Finally got her all together and spent the last 3 weeks chasing down tuning issues, ended up throwing a set of blackjacks on it which seems to have helped dial it in. Overall, I love it other than I'm pretty certain I need a steeper pitch impeller with...