Rotary Engine Building, Porting & Swaps All you could ever want to know about rebuilding and porting your rotary engine! Discussions also on Water, Alcohol, Etc. Injection

Dumb Question

Old 01-02-2004, 02:10 PM
  #1  
Senior Member
Thread Starter
 
j9fd3s's Avatar
 
Join Date: May 2002
Location: California
Posts: 22,465
Default

i recently had an engine apart and since i dont have a tq wrench i just put the nut back the way i found it, the hex pattern was on the flywheel and i just mached it back up. is this good? bad?



mike
j9fd3s is offline  
Old 01-02-2004, 02:16 PM
  #2  
Senior Member
 
75 Repu's Avatar
 
Join Date: Aug 2002
Location: Mike is a Liar!
Posts: 4,848
Default

hmmmm.. You seem buff enough to put it back on snug.. but the mark can be misleading.. maybe under torque it may have taken a coule more turns.. but you should be okay.. till the flywheel shoots out of the tranny and cuts off your legs..
75 Repu is offline  
Old 01-02-2004, 02:18 PM
  #3  
Senior Member
Thread Starter
 
j9fd3s's Avatar
 
Join Date: May 2002
Location: California
Posts: 22,465
Default

ive never had one of those nuts fall off on me (knocks on wood)
j9fd3s is offline  
Old 01-02-2004, 02:24 PM
  #4  
Senior Member
 
kahren's Avatar
 
Join Date: Jan 2002
Location: CT
Posts: 1,345
Default

how much do u weight? take a 2 foot bat nad hang on it at 90 degre angle that will bring it to 360 ft lbs
kahren is offline  
Old 01-06-2004, 11:13 PM
  #5  
Senior Member
 
boost_creep's Avatar
 
Join Date: Dec 2003
Location: Southeast
Posts: 502
Default

360 ft lb is what you need. But my suggestion is to buy a torque wrench. You without legs is not a lovely sight . Imagine having to drive your RX7 with hand controls . That should be enough to convince you that you should buy a torque wrench.
boost_creep is offline  
Old 01-07-2004, 01:20 AM
  #6  
Senior Member
 
rx7_re's Avatar
 
Join Date: Jun 2003
Location: Chicago
Posts: 226
Default

Simple physics, Torque = forceXdistance



how much you weigh times how long the bar is.



adjust the length of the bar till you hit 360ft/lbs and bingo.
rx7_re is offline  
Old 01-07-2004, 01:22 AM
  #7  
Administrator
 
phinsup's Avatar
 
Join Date: Jul 2001
Location: Stuart, FL
Posts: 24,416
Default

We used to do this with the Ford rear ends, they said when re-installing the same ring and pinion (say just doing bearings) to mark the nut, then turn about 1/8 inch past the mark and back it off to the mark. I dunno wtf that did, but that is the way we always did it LOL
phinsup is offline  
Old 01-07-2004, 01:29 AM
  #8  
Super Moderator
 
mazdaspeed7's Avatar
 
Join Date: Sep 2002
Location: Savannah, Ga
Posts: 2,763
Default

You *really* want to be sure its torqued down. Bad things can happen when it isnt. Just trust me on this one...
mazdaspeed7 is offline  
Old 01-07-2004, 01:58 AM
  #9  
Senior Member
 
pengaru's Avatar
 
Join Date: Apr 2002
Location: IL
Posts: 2,930
Default

did anyone else see that flywheel just roll by?
pengaru is offline  
Old 01-07-2004, 03:28 AM
  #10  
Senior Member
 
andynogo's Avatar
 
Join Date: Jan 2003
Location: Perth, Western Australia
Posts: 267
Default

360ft/lb- pah!



I take the scientific approach and do them up FT.



That's F@%king Tight if you hadn't realised.....



Imagine a 210lb fat b@stard jumping up and down on a metre long spanner, and you've just pictured me in my workshop!
andynogo is offline  

Thread Tools
Search this Thread
Quick Reply: Dumb Question



All times are GMT -5. The time now is 03:33 PM.