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-   -   got a few questions * re-assemble (http://forums.pelicanparts.com/911-engine-rebuilding-forum/952719-got-few-questions-re-assemble.html)

Tori 04-13-2017 12:56 PM

Yeah, they are pretty amazing. The one i used is a $500+ Milwaukee I'm tempted to pick one up.

Tori 04-14-2017 07:59 PM

Crank seal is now replaced, and not finding a torque speck for the crank pulley. I see the bolt head has serrations under the flange. Liquid thread lock needed ?

EDIT: Found a thread. 125#

Tori 04-15-2017 02:14 PM

Progress today.. getting the pistons back on, and mounting the cylinders. Question of the day,.... what sealant should i use for the copper cyl. to case gasket. Waynes book says to use the case sealer, but since i didn't split the case, i don't have any and wonder what else i can use.

Walt Fricke 04-20-2017 06:37 PM

Tori - sealant in this area ought not to be needed. Porsche doesn't, or at least didn't, specify it. But you can use any number of sealants - Yamha/Honda bond, or Hypalon. I like Hypalon or its kin because it is non-drying, and you don't have to spend a lot of time getting rid of it when you have to rebuild again. I'd not consider silicone.

bpu699 10-15-2017 03:10 PM

Quote:

Originally Posted by Tori (Post 9548031)
Ok, thats good to know. I don't have a compressor in the front garage, so i have to use an air tank. I think it's only getting to about 100# so the gun isn't working to full potential. I'll borrow one of my co-workers new electric impact guns. That thing is a beast.

Just saw this thread... do folks consider using an impact wrench on the crank "safe?"

I ask, as I left the pulley on when I took the crankshaft off, and now trying to get the pulley off...

Have access to impact wrenches, but have images of the crank shattering with use of it as its out of the case...

Safe? Or put it back in the case, attach flywheel/brace it, and use torque wrench?

Tippy 10-15-2017 03:54 PM

Torque wrenches are never to be used for breaking torque.

Impact that bisch off there. Mine took a 3/4" impact the 1st time. 1/2" wasn't happening.

2nd time, my Harbor Freight 1/2" electric impact worked fine.

Flat6pac 10-15-2017 03:55 PM

Put a torch on the bolt and bring up the temperature
Impact off.
Bruce

bpu699 10-16-2017 06:58 AM

Thanks guys.

Meant to say breaker bar, not torque wrench.

Will heat and use impact. Have air and electric. Just didnt want to shatter anything or bend the crank...

Bo

Walt Fricke 10-19-2017 08:29 PM

Bo
Maybe, just maybe, if a guy had the cast crank used on the Ts early on, this might be something to worry about? Though I don't think so. No way you could bend, much less shatter, a forged crank with an impact gun. No reason not to use one absent special circumstances. Maybe a rusted crank, where you might just twist the head off of the bolt? But why would you be dealing with such a crank anyway.

Next time (and when reassembling the engine), take the pulley off before splitting the case, and put it back on after you put the crank in the case and button the case up, or wait until you are ready to time the cams.

bpu699 10-20-2017 04:11 AM

Quote:

Originally Posted by Walt Fricke (Post 9783558)
Bo
Maybe, just maybe, if a guy had the cast crank used on the Ts early on, this might be something to worry about? Though I don't think so. No way you could bend, much less shatter, a forged crank with an impact gun. No reason not to use one absent special circumstances. Maybe a rusted crank, where you might just twist the head off of the bolt? But why would you be dealing with such a crank anyway.

Next time (and when reassembling the engine), take the pulley off before splitting the case, and put it back on after you put the crank in the case and button the case up, or wait until you are ready to time the cams.

Yep, novice mistake... Never thought to take it off...

Thanks for your help.

Bo


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