Count em again, this time mark the first tooth before you start and start with that tooth. Seems like the big block flywheels had 168 teeth. The counterweight seems too small for a 50 oz/in flywheel. What are the casting numbers on it ?
I do, Has 168 teeth, measured on the face of contact with the clutch 13 3 / 4 on the other side with teeth 14 1 / 4 without teeth 13 1 / 4 the part number is Z5AM-6880-A or 6380 does not distinguish well.Deshacer cambios tks
The first "Z" doesn't make sense but it sounds like a flywheel (6380) for a full-sized Ford (A). The "M" could mean that it's a high performance piece. http://mustangtek.com/FordDecode.html#Table22 Strange.
Only thing I can tell you is that's a Mexican Ford part (casting number) And as you're now sure it's got 168 teeth, it's not going to work for you.
Help again Help, my city no one I can turn my flywheel from 28 to 50, but there is a workshop where turbines balancing what they do is remove vibration equipment. They tell me that you found the center of the flywheel and if they put a counterweight of 191 grams is perfectly balanced flywheel. Time. I can do the following? 28 oz = 191g 50 oz = X X = 341 g 341 g - 191 g = 150 g I can put a counterweight of 150 g divided into 2 parts by placing 75 g of each side of the current counter? If the weight they put on the white box is balanced to 0. You can say that because I do not buy a new one, this is because my flywheel is 168 teeth and do not know if the starter will fit. Tks.
I would make sure the flywheel fits the bellhousing and starter before having them add weight to change the imbalance. What they told you should work. I'd trust them, seeing as they balance turbines.
they can't just 0 balance the flywheel... I thought the weight counter balanced the crank and damper... what does the...50 OZ and 28 OZ...have to do with the crank... 28 OZ doesn't 0 balance the flywheel nor does 50 OZ... if you put a shaft through a flywheel/flexplate the weight will go to the bottom... that's why the bolt holes on the crank and flywheel are offset, so you put the weight back on in the correct position.
The counterweights of a 50 oz-in imbalance crank are lighter than the counterweights on a 28 oz-in imbalance crank. That's why you need to add 50 oz-in of external balance weight (flywheel and damper) to balance the newer cranks with the recipricating mass (pistons and rods). The older cranks had heavier counterweights that only required 28 oz-in of weight added to the ends. The 50 oz-in cranks are lightweight and you get the extra weights on the ends twisting the crank some strange things can happen. That's why most strokers are usually 28 oz and real high performance cranks are zero balanced; no external balance needed. It's best to keep the mass inside the crankcase.
I went to get a new 28 oz.flexplate at a transmission parts shop. there was a set of scales on the counter. i set my old flexplate on them and weight it. when the guy brought my new plate out i weight it and it was almost 1 oz. more than the old one. i ask him to bring another one out and it was lighter by .5 oz. we did this to 6 flexplates and none were the same as my old one. the one i got was .2 oz lighter than the old one... these were just stock replacement parts. I've never compared dampers to see if they were different.
You misunderstood what he was saying. What that shop was talking about was finding the center of the counterweight, then adding enough weight on either side of that weight to achieve a 50 oz/in imbalance.
Thanks guys. This flywheel and has a counterweight that makes a 28 oz and this vibrates in the balancing machine, is the black box, if they put 191 g of steel in the white box the flywheel stops vibrating, making a rule of 3 think that can be solved that way. The problem is that in the shop have no way to verify that remained in 50 oz I'll stop speculating and I will buy a 164-tooth flywheel, My chutch is 11 ", the difference in size from 168 teeth is minimal hope the starter fit.
