FNG here. I am assembling a 1962 chev 235 and have gotten to the timing gear stage. The issue that I have is that my crank gear has two marks on it, one is a line and the other is an 'R' with two dots, and I'm not sure which is the right one. This picture was taken with the motor at TDC. Can someone please point me in the right direction?
All the crank gears I have seen have only dot making relationship a no brainer. With what you have I would suggest following the valve timing procedure from the shop manual which should tell you which one is right. See here: http://chevy.oldcarmanualproject.com/shop/1955truck2/55ctsm0606.htm
I'd say that as shown in the pic, it's "off" by one tooth. I'd go with the mark that's right next to the gear tooth,...Which is the way any that I have seen are. (The other "mark" may be something from the mfg process?) 4TTRUK
Call patrick's auto parts, they are an alliance vender and know their way around a stovebolt.....very helpful too
Its a tooth off. But as said above be sure to DEGREE the cam. I just got done with a rebuild and the cam was cut 10*off. I GOT in a time bind so I had the machine shop assemble it. Before it was rebuilt I told them I wanted it degreed (and balanced, the whole shot) Well they lied to me about it when the damn thing wouldnt run, I took it apart and found out what was wrong. Dont trust the marks, and verify it
Thanks so much for the help guys. Hooked up the good ol' dial indicator tonight and it seems both marks are wrong. I did not get the required .044" of movement on the exhaust lifter until I moved the cam mark one tooth to the right of the 'R'. With the cam mark at the R I only got .020" and at the line I only got .010".
Tried Degreeing the cam and my specs were all out of whack. Think I may have found out why. Part number on the cam is 3836386 which comes up as a hydraulic lifter camshaft. Shit.
Yeah, I found replacement cams on summit racing last night for $100. Not bad. Do you know of anyone that would have a stock used camshaft locally?
Used...no. For a new one try Gary Automotive in Edmonton @ 780-433-1425. Many local FLAPS around the province call him when somebody asks for something that predates thier computer/catalogs.