New crankshaft sprocket does not fit (timing)

M

MM_Falcon

Hi Everyone, first time posting. I couldn't figure out how to find a forum this question fit better in than the Introductions. My timing jumped a tooth. Chain had some slack so I ordered a new set, the camshaft sprocket fits fine but the crankshaft sprocket is about 3-4mm to small. I ordered 3 sets thinking the first one could have been a miss-box, one Cloyes C3026K and also a Comp Cams 3223. All had the same issue. I am at a loss with how to find the right timing set/crankshaft gear. I considered reusing the gears and trying to find a place that can order a chain. Could there be another crankshaft in the engine and that's why these don't fit? am I missing something? I'm going to try to upload a few pictures (see the links at the bottom, let me know if there is a better way to share them) and hopefully one of you guys can see or identify something about the engine as to why the timing sets I'm ordering don't seem to fit.
I have a 1967 falcon cylinder that has a '69 6 cylinder in it I believe is a 200ci due to the 5 freeze plugs. Stamp on the block is C9DE 6015-B and another spot has 9J29. I would appreciate any help or advice.
Below are the measurements of the old and new crankshaft sprockets. Let me know what additional info or pictures I can provide to help. Thanks in advance!
Original Crankshaft Sprocket - 35mm Inside diameter, 64mm outside diameter, 21 teeth
New Crankshaft Sprocket - 32mm Inside diameter, 58mm outside diameter, 19 teeth. I’m not concerned about the difference in teeth or outside diameter, should I be? But if the inside diameter is too small I can’t get it on the crankshaft.
http://u.cubeupload.com/MM_Falcon/20200826160138.jpg
http://u.cubeupload.com/MM_Falcon/20200916202835.jpg
http://u.cubeupload.com/MM_Falcon/20200916203529.jpg
http://u.cubeupload.com/MM_Falcon/20200916203858.jpg
http://u.cubeupload.com/MM_Falcon/20200916203905.jpg
http://u.cubeupload.com/MM_Falcon/20200826160144.jpg
http://u.cubeupload.com/MM_Falcon/20200904230406.jpg
http://u.cubeupload.com/MM_Falcon/20200916202548.jpg
http://u.cubeupload.com/MM_Falcon/20200916202603.jpg
 
Yes for sure the number of teeth and outside diameter of the gear matters. Though I can't see much of the external features of your engine I am quite certain that the reason that the timing gears won't fit your crankshaft is that you have a 250 cu. in six instead of the smaller 200 six. Swap out the 200 six timing set for a 1970 250 six timing gear chain set. Best of luck (y) :nod: Edited
 
Oh and welcome to the Ford Six forums! Here is also a post showing all the 250 Six timing gear and chain sets and their differences (see the below link) your 1970 250 six engine would have orginally used the early timing gear set this is also the best set to use for a performance build up. To ID a 250 six from a 200 six since they will both have the five freeze plugs count the number of bolts holding on the water pump to the block. A 200 has three bolts and a 250 will have four bolts. Good luck. (y) :nod: Edited

250 Timing Gear / Chain Sets
viewtopic.php?f=1&t=80839&p=628944&hilit=250+timing+gears#p628901
 
Thank you bubba22349!! I think you are correct. I'm going to check the water pump bolts and see if they are 3 or 4 bolt. Per the article I found in the tech section of this site it seems that's the only way to tell the 200ci from the 250ci. Thanks for the link to the post also, the rockauto link had the sprocket teeth count and links on the timing chain, I was able to confirm matched mine and that makes me feel like I am on the right track.
One of the interesting things that threw me for a loop and down the wrong track is since this block is stamped 69 and the 3rd digit is a D, that is supposed to identify that the engine was for a falcon/maverick. The falcon does not seem to have came in a 250, and the maverick was not introduced until 1970 (but I assume the engine was still stamped 69 when it was built) this made me think it must be the 200ci for a falcon. I'm ordering the part tomorrow morning, thank you! This has been a 3 week journey that might finally be coming to a close. Thank you Thank you!
 
Your are welcome MM_Falcon, yes the C9DE-6015-B decodes as a 1969 design number engine block but major parts such as blocks, heads, and many other parts were often used severial years. So when you also look at the block date code of 9J29 which tells you the exact day that engine block was cast at the Ford Engine Foundry in this case "on September 29, 1969" you then get the full picture this would make the part an early production 1970 model year block. The - B in the casting / design number also denotes that the part was redesigned again over the orginal part. So this engine block could be out of severial 1970 Ford Models such as a 1970 Maverick (which was introduced in 1969 1/2) Mustang, Comet, Fairlane / Torino, or even out of the very rare 1970 1/2 model Falcons short run of them built starting on January 1 1970 the 250 was its base engine this is the last Falcon model shortly there after they were rebadged as Fairlane's / Torino's.

There is also one other way to tell a 250 block and that is to measure the deck height they are considerably taller at 9.469 than a 200 block at 7.808. Best of luck (y) :nod: Edited
 
a lill late to the party
"...Gave me all of the info I needed to know...."
this may do just that (if doing a build):
https://www.vintageinlines.com/product- ... e-handbook

"...since this block is stamped 69 and the 3rd digit is a D, that is supposed to identify that the engine was for a falcon/maverick. The falcon does not seem to have came in a 250, and the maverick was not introduced until 1970 (but I assume the engine was still stamped 69 when it was built) this made me think it must be the 200ci for a falcon...."
need to ID the components ina 50 yr old vehicle as we start to return to service. Ford is different than chebby, others - in that motors are not specific to models (generally). Also ford has families of engines rather than small block/big block. 'Numbers matching' is less of a concern (empty box manufacturing policy). So ('60s - 80s) a fairlane (mid sz/large) can have a falcon motor as can a bronco, maverick, granada, econoline and fairmont (cars, trucks, coupes, sedans, econo-box)...

Check your head to double up on "ID major components". That helps in making decisions as well. Meanwhile lots of us have paired "the Handbook" with the 'tech archive' to produce the optimal (performance = MPGs & pep) from these tqie lill vehicles. The 4.1 is 'a stroked' 3.3 and as such has some advantages (& disadvantages). bubba suggests the 'pre-'71' timing set for more low end grunt (250's shining spot). The tech archive &/or Handbook may recommend a 4* advance (not "dot to dot") to bring back the performance dialed out by the pollution misers at that time...
:nod:
 
Hi ?MM_Falcon, did you happen to find the correct fitting timing chain and gear set? :nod:
 
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