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YPVS Loses Position(?)

Started by 2steve, May 26, 2025, 03:42:43 PM

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m in sc

just bring it to the house. I got my programmer back we can look at it one sunday if you want.

carbs dont suddenly need brass changes.  :twocents:

2steve

Likely needed, as I can't figure it out and it would be foolish not to know and just get new carbs (when it's something stupid and unrelated that I might have done).

Speaking of new carbs:
Which PWK's from which Toomey?

28mm for stock porting and non-stock programmed curves?

They take oil lines?

m in sc

etd has a setup for rzs, basically pre setup and ready to go. thats all I know

2steve

Rode today to prove that I could make it to your place, Mark.
Did well enough for that. No fuel flow issues anymore.
Clutch slips at max power delivery.
To me, that is actually good news.

Are FZ1 clutch frictions still the way to go on an RZ?

m in sc

yup. good glad the fuel delivery is good.

teazer

IS clutch slip common on RZ's?  Mine is 99% stock and I was wondering if I would need new plates in case I take it to the drag strip to get my brain back into gear.

2steve

Previously, the clutch was inspected, looked good, and assembled.
This is a fresh 2nd over 64.5mm rebuild. It was a cooler day and has a better ignition curve. Toomey pipes.

Seems that that combo of factors was too much. Seat of the pants said not much power delivery loss, but revved to 10k and stayed there while increasing speed.

Maybe it was right on the edge of being insufficient all along.

1976RD400C

My clutch slips until the bike warms up all the way (15 minutes) and then it is ok. I've tried different plates, springs, oil but when cold it acts like an old Chevy power glide transmission when it hits peak power. It definitely stops slipping when hot.
'76 RD400 green  '76 RD400 red   '84 RZ350

m in sc

fz clutch discs, fresh steels or blasted ones, and good springs should hold 75-80 hp easy. if not, somethings amiss

2steve

Carb set from Mr. Edmond at ETD is $700. Carb set with cable and fuel lines, no filter - bolt on and go.
He's a good communicator.

You know that sounds really good to me after spending all summer taking stock RZ carbs off and back on.

Still imagining that the left carb is dragging me down, (but it wasn't before) :huh: