OzVMX Forum
Marque Remarks => Suzuki => Topic started by: Freakshow on October 10, 2011, 12:42:39 pm
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anyone kow off the top of there head the74 Tm timing BTDC please ? is it like 2.3mm ?? i cant find the book
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Surely someone must know ????
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I'll check at home tonight. I know I've read it but can't remember off-hand
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same i thought maybe 1.8 or 2.3 but im guessing, did a quick net search and came up empty
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Freaky from your other post I see you want the specs for a 250? I just assumed (that word again) it was for a 125. I have the numbers for a 250 as well
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Freaky ,on my RH 250 with a bore & stroke of 70 x 64mm the ignition timing is set at 2.7- 2.8mm BTDC.
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Sorry Freaky, my service data book doesn't give a timming setting for TM's.
The only timming setting I have is for a 125.
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i got three motors here none with the stators on them, youd think i would have checked on that, before i pulled them all off at some point.... doh
must be an online manual somewhere.
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yoUR KILLING ME WHERE ARE ALL THE sUZUKI FILE S? dOC SURELY ONE OF YOU GUYS WOULD KNOW THIS PRITY BASIC NUMBER ?????
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From the Clymer Manual (only lists RL AND TS 250)
on PEI modles, Ignition timing is set when the mark on the stator plate is centred at the top mounting screw
the figures given above are used to check the advance built into the black-box circuitry.These figures are checked using a degree wheel and a timing light.
Timing Inch (mm)16 degrees at 1000 RPM
Degrees (BTDC) 24 degrees at 6000 RPM
However in the specification section it statesTM 250 = 21.5 at 6000 RPM
the Suzuki 1972 service manual (the only one that I know of that is TM250 specific and have)
States 21.5 at 6000 rpm (BTDC)
Hope that helps
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YEr thanks for looking but i got that same manual. DOh..
It unfortunatley talks in degrees and i dont do degree wheels, i use a Dial gauge so i was hoping somewhere out there was the spec in MM. Anyone now how to change degrees into a mm BTDC statement ?
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Not sure how the dial works
How ever to convert degrees in to mm you only need to know the diameter of the circle.
My stator plate is 120 mm O/D so 120 x 3.1416 = approx 377mm this is the circumference of the stator
so divide it by 360 and you have one degree then times it by 21.5 and you get 22.5 mm
Does that help
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This worked for me
http://www.dansmc.com/mc_software2.htm
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Wow thats all abit above my brain and skill set. I just need a number BTDC in MM. IF it was a yamaha :O), be easy as.
ill ring up the local Suzi place they must have an old service sheet with it on. I just figured all you suzi gurus would know this off ya head.
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Freaky,so far everything i've looked up on TM250 timing on Lukes suzuki tech manuals,they all say "PEI" for BTDC mm...every other bike non PEI has the timing spec.
I've been looking and come up with nada so far.
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Freaky, do you have a timing light and a 12 volt battery ???..... get back to me when you have and I will walk you through it.
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NAr have never owned a timing like that worked.
Solution came to me and i Used the vibration marks on one of them to match up the old set up then cross checked it on the others and there marks - all good now ! ;D
For Future referacne --> First mark on rotor to stator with a Dial guage is at 2.3mm, second is 2.7mm and third is 3.2mm
So Keep these numbers for static timing a TM250 with a dial guage BTDC at the track or where ever it take you.
(http://i33.photobucket.com/albums/d88/munchboxlive/th_BIketransfer055.jpg) (http://s33.photobucket.com/albums/d88/munchboxlive/?action=view¤t=BIketransfer055.mp4)