Need helping tearing down engine
11-18-06, 03:15 PM
#1
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Need helping tearing down engine
I recently blew a coolant see in my S5 NA and have begun to tear it down for a rebuild. Im in the process of opening up the block but I cant get the the bolt that holds the pully and goes into the the e-shaft out. Its only supposed to be torqued down to 90 ft lbs but Ive put a lot more pressure on it then that and cant get it to break loose. Anyone have a suggestion? Get a big *** impact gun or something or...
Any help would be great thanks.
Any help would be great thanks.
11-18-06, 04:49 PM
#3
And the Revolution...
haha, I just dealt with this last night. If its in the car, use a torch to heat it up. I heated it for about 3 or 4 minutes and then it broke right loose in about 3 seconds with the 3/8ths impact gun. Otherwise I couldn't get it loose any other way. Tried breaker bar on the frame and poping the starter and that didn't do ****. You might be able to heat it and then use the breaker bar but, The trick is HEAT. 
Chris
Chris
11-18-06, 11:43 PM
#6
Eats, Sleeps, Dreams Rotary
Impact gun over cheater bar in those sort of situations, IMO.
It comes with some pretty hellatious thread locker from the factory, IIRC, and you either need to put a torch to it to melt that stuff, or use an impact wrench.
A big cheater bar gives you a lot of torque but some times you might use too much. An impact wrench on the other hand jars the bolt lose by using a medium amount of torque a bajillion times. It's a bit safer that way...
Personally I didn't have any problems at all, just used a reasonably sized bar, but mine didn't have threadlocker.
Also, kungfuroy, that's the flywheel nut, not the e-shaft nut.
The flywheel nut is put on with like 400 ft lbs so you DO need a breaker bar that big...although with that much torque you'll end up snapping even a well-made wrench or breaker bar. Best to just take the engine to a tire shop and ask them to get the biggest impact wrench they have...
It comes with some pretty hellatious thread locker from the factory, IIRC, and you either need to put a torch to it to melt that stuff, or use an impact wrench.
A big cheater bar gives you a lot of torque but some times you might use too much. An impact wrench on the other hand jars the bolt lose by using a medium amount of torque a bajillion times. It's a bit safer that way...
Personally I didn't have any problems at all, just used a reasonably sized bar, but mine didn't have threadlocker.
Also, kungfuroy, that's the flywheel nut, not the e-shaft nut.
The flywheel nut is put on with like 400 ft lbs so you DO need a breaker bar that big...although with that much torque you'll end up snapping even a well-made wrench or breaker bar. Best to just take the engine to a tire shop and ask them to get the biggest impact wrench they have...
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11-20-06, 07:49 AM
#12
The Shogun of Harlem
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http://www.mazdatrix.com/getprice.asp?partnum=49-22000
Get the flywheel breaker bar and the flywheel stopper from Mazdatrix. Only had to jump on it twice and the nut came right off. My motor was sitting on the ground so I had to have two friends of mine keep the motor from flipping on its side while I jumped on the breaker bar.
edit:
Then to break the flywheel loose from its taper press fit or whatever on the e-shaft, you can drape a rag or something over the flywheel and give it a good whack or two with the flat side of the breaker bar. Very easy process-- I would have just bought a 57mm socket but napa wanted to sell me one for $75.
Get the flywheel breaker bar and the flywheel stopper from Mazdatrix. Only had to jump on it twice and the nut came right off. My motor was sitting on the ground so I had to have two friends of mine keep the motor from flipping on its side while I jumped on the breaker bar.
edit:
Then to break the flywheel loose from its taper press fit or whatever on the e-shaft, you can drape a rag or something over the flywheel and give it a good whack or two with the flat side of the breaker bar. Very easy process-- I would have just bought a 57mm socket but napa wanted to sell me one for $75.
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