Advancing Timing Predator 212cc ??

[tonyvlx]

Is there any good links/websites that will give me good step by step instructions on how to advance the timing on my predator 212 cc engine? Also how much should I advance it??
Mods
-K&N air filter
-Header
-18 lbs valve springs
-Removed governer
-#90 carb jet

 

[OzFab]

First up, DO NOT USE 18LB VALVE SPRINGS UNLESS YOU HAVE A BILLET CONROD...

There's only so far you can go but, there are different advance keys for different applications; I think the biggest I've seen is 8° but, that's just me. What is the intended purpose/use

 

[tonyvlx]

I want to file down the stock timing key. The kart will be used on road,no abuse, no racing. Thanks

 

[itsid]

for road use I'd say.. 4° or 6° otherwise you'll loose too much power in lower rpms.

Also the GX timing keys fit the predator (according to arc racing)
so, buy one, don't file; it's about $8 (even cheaper on ebay)

'sid

 

[Doc Sprocket]

If I remember correctly (and I might not...) every 0.006" you file off the key results in 1* of advance (or retard if you clock it the other way).

The truth of the matter is, you don't even need a timing key- but it does make life simpler for folks that do not own a timing degree wheel (I don't either). Racers often run without keys. Important thing to remember- the key indexes the flywheel to the shaft. It does not hold it there. Torque the nut correctly, and it holds itself with or without the key.

 

[OzFab]

If I remember correctly (and I might not...) every 0.006" you file off the key results in 1* of advance (or retard if you clock it the other way).

That seems to ring a bell...

 

[tonyvlx]

Where can I find detailed instructions on how to swap out timing key?

 

[landuse]

Where can I find detailed instructions on how to swap out timing key?

Just look around for instructions on how to change a sheared flywheel key.

Have a look HERE. They go through the process nicely. This is actually a camshaft installation guide, but they deal with the timing key as well