Picture Request: Flywheel Nut removal methods
#1
Picture Request: Flywheel Nut removal methods
So I have now installed my THIRD bad motor of the year in my FB. First motor puked an apex seal at DGRR. Second spun a bearing in my driveway while warming it up. I didn't even get this one started, and it's pissing coolant out of the sides of the block. One of my buddies from Grand Rapids said that it may be warped housings, so out this one comes. I'm going to try and cobble together one good 12a from the three cores that I have sitting around. The guy who built the current motor ($60 off of CL, so I can't complain...) said that he used all new seals, save for the apex seals.
So here is the question: I can get the front bolt off of the motors no problem (1/2" breaker bar w/ 2ft. extension of galvanized water pipe), but I can't keep the motor from spinning while trying to break free the flywheel nut. I have stood on the motor (6'4/196 pounds), have had my girlfriend (5'8 155 pounds) stand on the motor, and it still spins. I don't have easy access to an impact gun, so I'm trying to figure out a way to remove the flywheel nuts w/o one. How do you keep your motors from spinning while removing the flywheel nut?
Thanks
-Jim
BTW: I have searched.
So here is the question: I can get the front bolt off of the motors no problem (1/2" breaker bar w/ 2ft. extension of galvanized water pipe), but I can't keep the motor from spinning while trying to break free the flywheel nut. I have stood on the motor (6'4/196 pounds), have had my girlfriend (5'8 155 pounds) stand on the motor, and it still spins. I don't have easy access to an impact gun, so I'm trying to figure out a way to remove the flywheel nuts w/o one. How do you keep your motors from spinning while removing the flywheel nut?
Thanks
-Jim
BTW: I have searched.
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#7
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I have put a bolt in the flywheel with a small chain then put a bell housing botl in attatch the chain to it and the rest of the chain... chanin it down to something like a lag bolt, heavy tool chest a car rim still attached to a car.. whatever to stop it from rolling
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#8
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racing beat used to sell two bars. both bars are probably 4' long. one bar bolts to the flywheel and then sticks out 3' the other bar has the socket on the end. so its pretty simple.
get a 3"x.250"x4 foot bar, bolt it to the flywheel, and the nut should come right off
if you don't have the long bar, you need a BIG hammer...
get a 3"x.250"x4 foot bar, bolt it to the flywheel, and the nut should come right off
if you don't have the long bar, you need a BIG hammer...
#9
racing beat used to sell two bars. both bars are probably 4' long. one bar bolts to the flywheel and then sticks out 3' the other bar has the socket on the end. so its pretty simple.
get a 3"x.250"x4 foot bar, bolt it to the flywheel, and the nut should come right off
if you don't have the long bar, you need a BIG hammer...
get a 3"x.250"x4 foot bar, bolt it to the flywheel, and the nut should come right off
if you don't have the long bar, you need a BIG hammer...
#10
79 w 13B4port
iTrader: (5)
Thats what I use, a long piece of angle iron with two holes drilled in it so you can bolt it to the flywheel where the pressure plate bolts up. Then use a long breaker bar, situate the angle iron stopper so it is against the ground so you can put your weight on the breaker bar and presto off she comes.
#14
way better than drivin a hour imho. have u tried punning them against something. Like leaning one side against a tree then puttin another motor next to it lol..or wrapping a chain aorund the motor a few times then anchoring the chain to something do it wont rotate any more after a certain point.. Ive never personally had troible just used air tools but thats probably what i would try to do.
#15
way better than drivin a hour imho. have u tried punning them against something. Like leaning one side against a tree then puttin another motor next to it lol..or wrapping a chain aorund the motor a few times then anchoring the chain to something do it wont rotate any more after a certain point.. Ive never personally had troible just used air tools but thats probably what i would try to do.
#16
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You still have to jump up and down on the far end of the wrench bar a bit, but it gets 'er done.
Mazdatrix still sells the blocking bar; just a thick slab of hot-rolled steel with holes in it.
#17
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We hung on the breaker bar with the engine hanging from the ceiling on a chain. That worked. Perhaps you could jack a car up far enough to pin the engine block underneath it? I've pressed bushings in this way, but bushings aren't as tall a block.
#18
Lives on the Forum
Take two longish bolts and screw them into the flywheel at 9 and 3 O'clock positions. Leave about an inch extending out. Take a long breaker bar and lay it across one of the bolts, and under the other, so that they jam against the bar. If the bar is long enough, that that will keep the motor from trying to roll over on you.
Anyway, that's how I do it. I could never justify paying the price for the RB tools when something as simple as this works so well.
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Anyway, that's how I do it. I could never justify paying the price for the RB tools when something as simple as this works so well.
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#22
So I ended up bolting a 1/8" thick, 2"x2"x4' piece of angle iron to the flywheel, and proceeded to start snapping off 1/2" breaker bars (Kobalt brand, Lowe's, mfg. in the same facility as Craftsman, on the same line, with the same steel). Broke two before I decided to get my parents truck and take the engines to Midas and have them zip them off. I have the front bolts and flywheel nuts off, and now I can't figure out how to remove the flywheels. I hit the back of the flywheels as I spun it for about an hour, and got nowhere. I don't want to damage the flywheels, and I'm thinking about just taking it over to Midas Saturday morning before work and paying them to pop the flywheels off. Any suggestions before I pay to have them removed?
#24
79 w 13B4port
iTrader: (5)
Mazdatrix has alot of flywheel removal info on their website, even have a video showing how to ......
http://www.mazdatrix.com/pictures/fa...lywheelFAQ.mpg
If that link does not work try this one:
http://www.mazdatrix.com/faq/flywheelremoval.htm
You have to ring it like a bell, without damaging it.
Sounds like you have a stubborn one, good luck.
http://www.mazdatrix.com/pictures/fa...lywheelFAQ.mpg
If that link does not work try this one:
http://www.mazdatrix.com/faq/flywheelremoval.htm
You have to ring it like a bell, without damaging it.
Sounds like you have a stubborn one, good luck.