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Cam timing help

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Si McMille View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Si McMille Quote  Post ReplyReply Direct Link To This Post Topic: Cam timing help
    Posted: 11 Jan 2018 at 23:38
Hi was wanting to check my cam timing..

How do I know if there timed up correct or miles out?

If there (more than likely) out,
what’s the step by step in how to do the timing?

I lnow about slotting the cams - so you can change the degrees... that’s as far as I understand. Lol

Thanks...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redratbike Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 06:54
You need to be getting a degree wheel and a DT gauge
This pic below gets you the idea of what's needed degree wheel on the crank and Dti gauge on the cams


Some reading info for you again

http://www.apriliaforum.com/forums/showthread.php?296568-The-most-retarded-cam-timing-setup-in-the-history-of-motorcycle-engineering&highlight=Slotted+cam

http://www.apriliaforum.com/forums/showthread.php?112376-Cam-Timing-Change-on-Dyno&highlight=Slotted+cam


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Si McMille View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Si McMille Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 10:10
Awesome mate.. I’ll get my reading glasses on, lol.
2001 RP Mille
15/42 gearing
54mm tb’s
54mm Evo stacks - dual velocity
Evo air box with K&N
Unrestricted intake boot
Custom Collector Mod
Evo Ti Exhaust
Aprilia EPROM
PC3
Tuono riser conversion
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Stevex View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stevex Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 13:10
Dont forget to use a piston stop to get your exact TDC.
I made one out of an old spark plug, loads of info out there on the www.
I wouldn't trust TDC / timing marks on any engine until I'd confirmed them myself.
People say I don't know Jack Sh1t; but I do, he lives next door.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redratbike Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 16:09
Originally posted by Stevex Stevex wrote:

Dont forget to use a piston stop to get your exact TDC.
I made one out of an old spark plug, loads of info out there on the www.
I wouldn't trust TDC / timing marks on any engine until I'd confirmed them myself.
you can lock the engine with a modified bolt through the bottom of the crank case


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Si McMille View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Si McMille Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 16:20
I have a lock pin I used for my Vauxhall, when I had to lock the flywheel whilst replacing the timing chain, would that do?

image.jpg
2001 RP Mille
15/42 gearing
54mm tb’s
54mm Evo stacks - dual velocity
Evo air box with K&N
Unrestricted intake boot
Custom Collector Mod
Evo Ti Exhaust
Aprilia EPROM
PC3
Tuono riser conversion
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redratbike Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 16:26
no Si
 
scroll down this post..you can make one from a bolt and it screws in bottom of crank case
 
 
 
 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stevex Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 17:25
Originally posted by redratbike redratbike wrote:

Originally posted by Stevex Stevex wrote:

Dont forget to use a piston stop to get your exact TDC.
I made one out of an old spark plug, loads of info out there on the www.
I wouldn't trust TDC / timing marks on any engine until I'd confirmed them myself.
you can lock the engine with a modified bolt through the bottom of the crank case

Mark, how does that confirm TDC on either cylinder?
People say I don't know Jack Sh1t; but I do, he lives next door.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redratbike Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 17:34
Originally posted by Stevex Stevex wrote:

Originally posted by redratbike redratbike wrote:

Originally posted by Stevex Stevex wrote:

Dont forget to use a piston stop to get your exact TDC.
I made one out of an old spark plug, loads of info out there on the www.
I wouldn't trust TDC / timing marks on any engine until I'd confirmed them myself.
you can lock the engine with a modified bolt through the bottom of the crank case

Mark, how does that confirm TDC on either cylinder?
 
theres a notch in the crank at certain points , and the markings on the cam sprocket as well


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Post Options Post Options   Thanks (0) Thanks(0)   Quote JMH Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2018 at 18:39
Originally posted by Stevex Stevex wrote:

Dont forget to use a piston stop to get your exact TDC.
I made one out of an old spark plug, loads of info out there on the www.
I wouldn't trust TDC / timing marks on any engine until I'd confirmed them myself.


Rotax crank timing marks are reported to be max 1 degree out. I can confirm the same only on my specimen. Anyway, once you have timing gadgets measuring the TDC should be doable.
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