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Originally Posted by JimmyL
This IP repositioning I guess is just more than my pea brain can imagine (since I have never actually SEEN it happen). To change the position of the IP reletive to the engine timing, isn't it the sprocket/chain relationship that has to be changed, since the IP gap-thing lines up a certain way. Or is this a case of just an idiot (me) just going on info I have read without a visual point of reference?  |
The gear on the timing chain is a male splined shaft....no keys.
The IP is also a round splined shaft....but it has a single notch missing for a visual reference.....
The coupleler shaft is a female splined shaft a little less than 2 inches long (I never measured it)
the IP can be interted in any position the splines line up....as they are not keyed....I am thinking the other IP I had may have been the odd series that was mismarked in reference to all the rest even though the serial number would dictate otherwise...I was ultra careful....in fact I lined the motor up to 24 btdc...Pulled the IP and low and behold its on the money with the mark yet is about 10 degrees retarded when I do the wellling fuel methed of timing which seems to be accurate as its a little slow to fire and smokes at startup cold...now this is a car that once started very quickly before the IP was swapped trouble shooting my loss of power problem last fall. (resolved).
I swapped back the original IP today....but was dark when I got it running.....will drive it tomorrow to see how it runs then try to check the timing to see if its any closer to what it should be....
It actually ran great at low rpms with it retarded like that. It just ran like crap on the highway....power is way down off idle from the other way but it seems to start quicker...but haven't had it out on the road yet. I will do that tomorrow. Then I can worry about how to get that damned back bolt back in.