OP
@louswheel avatar
UTC

Molto Verboso
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
 
Molto Verboso
@louswheel avatar
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
UTC quote
Righto,
I've got the GTS all prepped up for my 1st attempt at inspecting/adjusting he valves on my GTS 300. I've removed the rear wheel, and taken off the tansmission cover, so that I can set the timing marks, and the engine is dropped nicely, so that I can gain access to the valves.
I'm using Cheeky Thomas's guide https://cheekythoma3.wixsite.com/itsme/valves on setting things up, but I'm slightly confused at the part where you gain access to the crank (pic 5/6 ) to see the timing mark. Ive set that part up correctly, but then it says
"Once the bottom mark is lined up now look at the camshaft pulley and you see its on its timing mark, youll see it has 2 arrows, 2v and 4v depending on the engine, it refers to how many valves the engine has and you can count that to be sure... this engines a 4v so make sure the arrow is lined up to the casting on the head straight upwards"

But if I do that, it takes the timing mark out on the crank side! so, I end up confused as to which timing mark to use!
Robots video
makes no mention of the crank marks, so who I trust here??

Cheers

Graham
@breaknwind avatar
UTC

Ossessionato
Red Devil SH150i (10,000)
Joined: UTC
Posts: 3254
Location: Orange Park Florida
 
Ossessionato
@breaknwind avatar
Red Devil SH150i (10,000)
Joined: UTC
Posts: 3254
Location: Orange Park Florida
UTC quote
Turn the crankshaft until the intake valves(upper valves) depress and release. Put a pencil in the spark plug hole and hold it against the piston. Turn the crank until the pencil stops moving out. Now your at TDC.
@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
Joined: UTC
Posts: 10341
Location: Hermit Kingdom
 
Veni, Vidi, Posti
@znomit avatar
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
Joined: UTC
Posts: 10341
Location: Hermit Kingdom
UTC quote
Are they pretty close or way out?
OP
@louswheel avatar
UTC

Molto Verboso
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
 
Molto Verboso
@louswheel avatar
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
UTC quote
znomit wrote:
Are they pretty close or way out?
No idea yet, as it takes more time prepping the scooter than to do the actual adjustments, I mean, I have to remove the exhaust, remove the rear wheel, remove the transmission cover drop the engine, all for this! I'm expecting in the post a set of angled feeler gauges to hopefully make things a little easier!

Graham
@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
Joined: UTC
Posts: 10341
Location: Hermit Kingdom
 
Veni, Vidi, Posti
@znomit avatar
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
Joined: UTC
Posts: 10341
Location: Hermit Kingdom
UTC quote
If they're close its good enough. The cam profile isn't changing much at TDC. It's not rocket surgery.
@christopher_55934 avatar
UTC

Ossessionato
2007 Stella 225
Joined: UTC
Posts: 3547
Location: Rochester, Minnesota
 
Ossessionato
@christopher_55934 avatar
2007 Stella 225
Joined: UTC
Posts: 3547
Location: Rochester, Minnesota
UTC quote
I didn't watch the videos, big picture unless this thing is a strange beast. The idea on any vehicle with valves, you have to adjust is each cam lobe is egg shaped. Your trying to find the lowest part of the lobe so you know the valve is fully closed. The pointy part of the lobe is a fully open valve. If you think you have the alignment correct, you should have a gap between the rocker arm and valve stem, if you don't and the scooter runs question your setup before touching anything. As mentioned earlier in a post look for top dead center and look at the part of the lobe your on, if it's not the lowest part that would be a fully closed valve try again.


https://www.google.com/search?q=cam+lobe&rlz=1C1GCEA_enUS955US955&oq=cam+lobe&aqs=chrome..69i57.1546j0j15&sourceid=chrome&ie=UTF-8[/u]
OP
@louswheel avatar
UTC

Molto Verboso
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
 
Molto Verboso
@louswheel avatar
150 Sprint Veloce, RE Meteor 350
Joined: UTC
Posts: 1268
Location: St Neots Cambridgeshire England
UTC quote
Got my angled feeler gauges, and had a measure..... They are spot on, now, I've got a 3hr job putting it back together- that'll have to wait until tomorrow now...!

Graham
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