phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 19:54:36 GMT 1
Just double checking so things. Which way should the PV turn? When it's set with the dowl (closed position) which way should it turn to be open on the cleaning cycle?
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Post by jackjabba on Sept 12, 2014 19:58:02 GMT 1
Clockwise on power up
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Post by stfocus on Sept 12, 2014 20:04:15 GMT 1
On mine when I put the ignition on it goes forward and then backwards its a lc2
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 20:15:18 GMT 1
On mine when I put the ignition on it goes forward and then backwards its a lc2 Is that anti clockwise when looking from the LHS where the cables are? |
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 20:15:51 GMT 1
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 20:33:25 GMT 1
Looking at the powervalve pulley side as in left They don't move much Cheers. They're right then. Next step is to see if they move when the engine is running. In search of 20 horses which seem to have gone missing! |
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Post by stfocus on Sept 12, 2014 20:52:07 GMT 1
On mine when I put the ignition on it goes forward and then backwards its a lc2 Is that anti clockwise when looking from the LHS where the cables are? Yep pal |
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 21:03:39 GMT 1
Is that anti clockwise when looking from the LHS where the cables are? Yep pal Confused now. That's the opposite of what headcoats said. You're looking from the left side of the bike ? Mine's an N2, but the PV must be the same as the LC2 |
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Post by stfocus on Sept 12, 2014 21:17:09 GMT 1
I'll go in my garage now and check for u now
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Post by andrew on Sept 12, 2014 21:26:43 GMT 1
Christ you've all got me now!, will read this again when I've had less beer! Ahh Friday night in the garage, Classic rock on the Pc, beer flowing and I can just spend time with the bike,,, is that heaven or what. (Or do in need to get a life???!!!)
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 21:27:20 GMT 1
I'll go in my garage now and check for u now Thanks mate |
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Post by stfocus on Sept 12, 2014 21:30:13 GMT 1
I'll go in my garage now and check for u now Thanks mate pm me your emall and I will send u a video of it |
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Post by stfocus on Sept 12, 2014 21:41:14 GMT 1
What got me on mine is when I put the ignition on it goes clockwise and back to whsre it started and goes anticlockwise a bit and back To where it stated and put the ignition back on and all is well
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 21:46:35 GMT 1
Christ you've all got me now!, will read this again when I've had less beer! Ahh Friday night in the garage, Classic rock on the Pc, beer flowing and I can just spend time with the bike,,, is that heaven or what. (Or do in need to get a life???!!!) Sounds good to me! |
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 12, 2014 21:48:31 GMT 1
pm me your emall and I will send u a video of it Pm sent |
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Post by stfocus on Sept 12, 2014 21:55:28 GMT 1
pm me your emall and I will send u a video of it Pm sent Video sent pal hope thks helps |
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Post by markhoopy on Sept 12, 2014 22:25:48 GMT 1
Look at the right-hand part of this diagram - this is the nearside of the bike. At tickover/low revs the p/v is turned clockwise to the right, to reduce the exhaust opening. At high revs the valve turns anti-clockwise to the left, raising the exhaust port height for increased power.  |
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phil38
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Posts: 426
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Post by phil38 on Sept 13, 2014 7:04:24 GMT 1
Look at the right-hand part of this diagram - this is the nearside of the bike. At tickover/low revs the p/v is turned clockwise to the right, to reduce the exhaust opening. At high revs the valve turns anti-clockwise to the left, raising the exhaust port height for increased power. So does that mean the parked position is open then? |
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Post by markhoopy on Sept 13, 2014 10:25:05 GMT 1
So does that mean the parked position is open then? Yes it does - the p/v moves to the 'closed' position when the bike is started, but when you first switch the ignition on and the p/vs go through the cleaning cycle they end up in the 'open' position. |
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Post by rich on Sept 13, 2014 10:38:28 GMT 1
Another thing to remember is the valve's initial movement will depend on how the bike was last switched off. Usually you will get three whirrs - left, right and left but if it was stopped with the kill switch you may only get two as it would have been in the closed position to start with.
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phil38
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Posts: 426
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Post by phil38 on Sept 13, 2014 13:01:51 GMT 1
Well, power valve checks out ok, moves with the engine running, is set right and isn't arse about face.
Compression tested it hot and cold and get 95 psi hot and 90psi cold. Both sides are identical so I'm assuming there's no big problem there although I thought 110 was normal. N2 compression is lower than an LC so maybe it's Ok??
Bores were honed and new rikken rings fitted. Bores were properly measures and just within spec. Was run in "by the book" too.
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phil38
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Posts: 426
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Post by phil38 on Sept 13, 2014 13:10:55 GMT 1
Well, power valve checks out ok, moves with the engine running, is set right and isn't arse about face. Compression tested it hot and cold and get 95 psi hot and 90psi cold. Both sides are identical so I'm assuming there's no big problem there although I thought 110 was normal. N2 compression is lower than an LC so maybe it's Ok?? Bores were honed and new rikken rings fitted. Bores were properly measures and just within spec. Was run in "by the book" too. Hang on, hold the replies. Did the test without opening the throttle, and with the other plug fitted - that may explain things. I guess I'll go and remove he seat, tank, header tank and PV servo again - bugger! |
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Sept 13, 2014 14:59:33 GMT 1
Contrary to what I expected, holding the throttle open and leaving the other plug out made 4/5 of f'all difference to the compression pressure- still 95psi hot after kicking the sh1t out of it.
Did make a discovery earlier though that the oil tank level sender block connector was routed in front of the air intake. Moving this away seems to have given me another 10-15 mph top speed which must equate to quite a few horses and also explains it running rich on the dyno.
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