Exactamundo.

Didn't I hear this once before...........oh yes........I did:

;)

You posted that at 08:10PM, 1minute before I made my post. :rolleyes:

The bigger problem here is that you have no idea where the tooth (if something was improperly installed) was skipped. Either the cam or the crank.

the cam, being on the chain before the IP will cause a different change in timing than a tooth skipped at the crank.

If you are crafty and a few machinist tools, you could simply drop your lower oil pan and determine TDC for yourself (for sure). Then follow the FSM for whatever timing method you feel most comfortable with.

I have yet to do the drip method, sorry.

Once you have determined when your IP is set in relation ti TDC, all your adjustments can probably be made at the cam.

^^assuming that someone previous made a bimbo mistake and the major order of the timing is in good setting.

Nope, a tooth is a tooth and it will make an 18* error at the crank no matter which sprocket it skips on.

Is it not possible for the crankshaft gear to slip a tooth, rather than the camshaft gear slipping a tooth?

That might result in those 9 degrees vs the 18 degrees when you slip a tooth at the camshaft.

Ken300D

As said above, a tooth is a tooth. Skipping any tooth on any of the three sprockets results in an error of 18* at the crank.

If you skip a tooth at the crank, its 18*.
If you skip a tooth at the IP, its 18*.
If you skip a tooth at the cam, its 18*.

Actually, I posted it at 6:11 PM in post #2..........but, who's arguing.........;)

agreed. I dont mean a different amount of change.

I didnt read the previous posts either, FI and BC were basically saying this already.

...just a little cryptic for some to pick up on.

for clarity and reference

from top, clockwise: cam, IP timing gear, crank

That's not correct. There's 40 teeth on the cam gear, 360*/40 = 9.
Or by your logic 18*X 40 teeth = 720*.

No, shifting the location of the chain results in an error of 18* as measured at the crankshaft. If you measure at the cam or IP it is a 9* error. Since the crankshaft operates them at exactly a 2:1 ratio, any timing change made to the cam or IP is double at the crank. Likewise in reverse, any change made at the crank is half at the cam and IP.

You're still wrong. If the cam timing is off 9*, it can be made perfect by moving the cam sprocket one link (tooth) of the chain.

If the cam timing is off 9° at the cam, it can be corrected perfectly by shifting the cam sprocket by one tooth.

However, we reference all our angles off the crankshaft, which provides twice the camshaft readings. So, 9° at the camshaft will be 18° at the crankshaft.

Since we only have a difference of 9° at the crankshaft, if we shift the cam sprocket by one tooth, the change at the crankshaft will be 18° and we'll be blown out the opposite side.

It's a bit difficult to grasp, but think of the crankshaft as doubling everything that happens at the camshaft.

Alright, I see what you and FI mean.