THE MOMENT OF TRUE.
- kawaBCN
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Re: THE MOMENT OF TRUE.
1 week 5 days agoThe annoying thing about it is that I don't understand how I made that tremendous mistake when setting the timing.Bent valves for sure . I just counted the links in the picture and I count 15 1/2 links so the intake cam is 30 degrees crankshaft advanced from where it should be. In the firing order 153624 153624 1 follows 4, so no surprise to hear 2 bent valves in sequence.
Rusted pitted valves would give low readings by a small amount. Zero compression is a gross leak.
I'm surprised that you managed to get the shims reset to proper clearance. A bent valve will hold the valve open and usually, you can't find a shim thick enough to fill the excessive clearance.
The bike started very well, the noise or failure came when passing 7000 RPM.
If there was a loose chain, the intake valve shaft sprocket would have jumped backwards, not forwards as it was.
At the moment I'm looking at prices for head gaskets and valves, maybe I'll take the Getor parts option instead of Z1300.de.
RUN LIKE THE WIND¡¡¡
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- Kawboy
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Re: THE MOMENT OF TRUE.
1 week 5 days ago
I sincerely doubt you made a mistake setting the initial timing of the camshafts. The mistake may have been tensioning the cam chain and you may have left the tensioner too loose. Usually, the loose chain will jump upon deacceleration of the engine, When the engine is operating under power, the crankshaft is pulling the cam chain taunt and all the slack is on the back side of the engine where the chain tensioner is. Upon deacceleration, all the slack in the chain moves to the front side of the engine. At that point, depending upon the position of the camshaft lobes in relation to the shim buckets, the camshaft may rotate either backwards or forwards by the pressure of the valve springs pushing on the cam lobes.
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- kawaBCN
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Re: THE MOMENT OF TRUE.
1 week 4 days ago - 1 week 4 days ago
When I have something in mind, I don't stop until I do it.
This afternoon I sacrificed my snack and locked myself in the garage to continue disassembling Christine.
I already have the cylinder head off the engine block.
At a glance I noticed a small notch in cylinder one caused by the exhaust valve impact.
Without going home for dinner I continued with the task and was able to disassemble the valves on cylinders one and four.
On the left the intake valve of cylinder one has a bent stem (blue arrow), the exhaust valve has hardly any damage.
On the right of the image the exhaust valve of cylinder four also has a bent stem (green arrow), the seat is full of carbon as it does not close tightly (red arrow).
The intake valve of cylinder four does not seem to be damaged.
I have already ordered from the people at GETOR MOTORCYCLE PARTS:
I have a good experience with the purchase of similar material for my GPZ 1100.
Plus their price is more competitive than their competition whose name starts with Z and ends with 1300.
I have ordered three exhaust valves, three intake valves, cylinder head gasket, rocker cover gasket and a set of 12 valve stem seals.
The party cost me 327 euros with shipping.
It goes on and on.
This afternoon I sacrificed my snack and locked myself in the garage to continue disassembling Christine.
I already have the cylinder head off the engine block.
At a glance I noticed a small notch in cylinder one caused by the exhaust valve impact.
Without going home for dinner I continued with the task and was able to disassemble the valves on cylinders one and four.
On the left the intake valve of cylinder one has a bent stem (blue arrow), the exhaust valve has hardly any damage.
On the right of the image the exhaust valve of cylinder four also has a bent stem (green arrow), the seat is full of carbon as it does not close tightly (red arrow).
The intake valve of cylinder four does not seem to be damaged.
I have already ordered from the people at GETOR MOTORCYCLE PARTS:
I have a good experience with the purchase of similar material for my GPZ 1100.
Plus their price is more competitive than their competition whose name starts with Z and ends with 1300.
I have ordered three exhaust valves, three intake valves, cylinder head gasket, rocker cover gasket and a set of 12 valve stem seals.
The party cost me 327 euros with shipping.
It goes on and on.
RUN LIKE THE WIND¡¡¡
Last edit: 1 week 4 days ago by kawaBCN.
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- kawaBCN
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Re: THE MOMENT OF TRUE.
1 day 8 hours ago
This week I received the parts I bought at
GETOR.
Cylinder head gasket
Three inlet valves.
Three exaust valves.
Set of valve seals.
Cylinder head cover gasket.
This coming weekend I'll get to it.
Cylinder head gasket
Three inlet valves.
Three exaust valves.
Set of valve seals.
Cylinder head cover gasket.
This coming weekend I'll get to it.
RUN LIKE THE WIND¡¡¡
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- scotch
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Re: THE MOMENT OF TRUE.
1 day 8 hours ago - 1 day 8 hours ago
I am curious as to how the Coolant Passages on this head-gasket, seal. Kawasaki OEM H.G.'s and some others have a sealant bead on both sides. I see none on this gasket. Are there specific instructions regarding this?
1980 KZ 1300 sr# KZT30A-009997
Always High - Know Fear !
Always High - Know Fear !
Last edit: 1 day 8 hours ago by scotch.
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