kawasaki gt 550 No compression ????

[Jay2903]

Hey guys
I've been working on this 550 a little while. I've replaced a piston ring and put it back together but there's no compression all round now. I think its the timing.

1)I've aligned the t mark then the marks on the cam sprockets then counted 44 teeth. = no compression

2)then rotated the crankshaft done the above again
= no compression.

Then i thought i may have got the exhaust and inlet shafts the wrong way around. I done 1) again but something was jamming then i done 2 again and still jamming.

Any ideas ?

[Jay2903]

anyone ?

[Tankie]

You have got something wrong,
Go back to the start, set the crank up to T on the correct cyl and re time.
Do not rotate the engine if it will not go, if you have forced it ,or used the starter you have probably bent a few valves.
____________________
Always learning, everyday is a school day

[Pete.]

[Jay2903]

[Tankie]

Oh ok, well done,
make sure your using the correct cam shaft i.e .ex to the front and inlet to the rear
____________________
Always learning, everyday is a school day

[Polarbear]

I had the GT750 which I rebuilt somewhere back near the time Moses was driving a chariot.

I seem to remember that there were timing marks for the crank and both cams and you had to have the CCT in and set up. I can't remember it being a problem, sorry.
____________________
Triumph Trophy Launch Edition

[Polarbear]

Ha, first hit I got was this.....

https://www.youtube.com/watch?v=cBP_BEzospE

Not you is it?
____________________
Triumph Trophy Launch Edition

[Jay2903]

https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/0B9EF3A7-6652-4322-9169-1D06E5EC066C_zpsorxqviwl.jpg.html?sort=3&o=0

Is that the right t mark that im lining up ? the manual is a bit vague
(i know it's not lined up in that pic)

[Jay2903]

[Jay2903]

Is there a way you can tell the cams apart ? I think i had the correct first but i had no compression so i tried them the other way around which is when they were jamming

(I managed to get the timing ok on another bike with a dohc so i think i'm doing the obvious bits correctly)

[Jay2903]

so the T line is alined -
https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/ED11A40F-21CF-4C35-BED4-75A030BAF7AC_zps5kwuyu7y.jpg.html?sort=3&o=2

The marks on the sprockets are alined with the head and theres 44 links between the marks on the sprockets -
https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/49BD014A-2AA5-4C0C-A776-9C148CF96F0D_zpsn5shqj9n.jpg.html?sort=3&o=0

no compression

image of the cams
https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/A6883135-5D07-4F96-A845-161A81403AA7_zps1ckdfnh3.jpg.html?sort=3&o=1

[Pete.]

If that last photo is of the cams with the TDC mark lined up then the cams are in wrong.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Jay2903]

[Jay2903]

https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/5D5A69FC-BF8F-41FE-8ECC-7024B406DDAC_zps9porbbge.jpg.html?sort=3&o=0

Is that right ?

[Pete.]

[Jay2903]

https://s61.photobucket.com/user/Jay29031/media/Mobile%20Uploads/E5E7B4D3-2499-4349-9E84-C27036D76EF7_zps8q2myqum.jpg.html?sort=3&o=0

I think i've got it.

i took a shot a doing checking the clearances and came up with -

Inlet
1 - 0.15
2- <0.05
3- 0.15
4- 1.7

exhaust
1- 0.25
2- 0.15
3- 0.05
4- <0.05

[Pete.]

Inlet cam looks retarded a tooth or two but that might be due to wide lobe centre angles. Have you double-checked the pin count? No matter what turn the engine over at least two full turns by hand before you attempt to spin it on the starter.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Jay2903]

[Pete.]

[Jay2903]

[/quote]

Can't be cam timing - one out all out![/quote]

yea
On the 4th cyliner the inlet gap is really big. Does that mean there's something up with the valve ?

[Pete.]

Err - yeah. I missed that 1.7 gap. The valve is stuck open, probably bent.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Jay2903]

[Jay2903]