Notices
Forced Induction Superchargers | Turbochargers | Intercoolers

what is a rotabroach bit?

 
Old 07-22-2004, 08:42 AM
  #1  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Question what is a rotabroach bit?

anyone got a pic. Im ready to tap the oil pan on my install. Can I get 1 from autozone? TIA
Tapout is offline  
Old 07-22-2004, 09:03 AM
  #2  
Teching In
 
Join Date: Mar 2002
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

[JFS] is offline  
Old 07-22-2004, 09:06 AM
  #3  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default

thanks!
Tapout is offline  
Old 07-22-2004, 10:18 AM
  #4  
The Bull
 
DERTY's Avatar
 
Join Date: Jun 2002
Location: Grand Rapids, MI
Posts: 3,578
Likes: 0
Received 0 Likes on 0 Posts
Default

Whoa, why are you using a rotabroach (AKA spot weld cutter) to tap your oil pan??? Seems like you're looking at the wrong tool or something. Or are you looking to clean up the flat surface on the pan?
DERTY is offline  
Old 07-22-2004, 10:23 AM
  #5  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default

Im just going by what vortech called it in the directions. I dont have one of those bits. can I just drill a 9/16 hole and then use a 3/8 NPT tap? thanks for the help
Tapout is offline  
Old 07-22-2004, 10:28 AM
  #6  
The Bull
 
DERTY's Avatar
 
Join Date: Jun 2002
Location: Grand Rapids, MI
Posts: 3,578
Likes: 0
Received 0 Likes on 0 Posts
Default

Can you post the instructions? I'm guessing that they want you to use a rotobroach to machine a flat spot in the pan so that the fitting can seal flush. So you'd need to drill a small hole to use a rotobroach to machine the flat into the pan. Then open the hole up with a 9/16 drill then tap it. That's why it would be good to see the instructions to say for sure.
DERTY is offline  
Old 07-22-2004, 10:35 AM
  #7  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default

Tapout is offline  
Old 07-22-2004, 11:08 AM
  #8  
The Bull
 
DERTY's Avatar
 
Join Date: Jun 2002
Location: Grand Rapids, MI
Posts: 3,578
Likes: 0
Received 0 Likes on 0 Posts
Default

That makes sense. They want to use a rotobroach only because it will leave a cleaner and straighter hole in the pan. It also won't elongate a hole as easy as a drill can. You could also under drill with a 17/64, ream out to 9/16 and then tap it. They just want a clean straight hole to tap it. I'd be more careful in putting the tap in straight!
DERTY is offline  
Old 07-22-2004, 11:17 AM
  #9  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default

cool thanks for the help!
Tapout is offline  
Old 07-22-2004, 12:42 PM
  #10  
TECH Senior Member
iTrader: (59)
 
MIGHTYMOUSE's Avatar
 
Join Date: Nov 2001
Posts: 9,960
Likes: 0
Received 0 Likes on 0 Posts
Default

i have used a hole saw and a wood boring bit before.. both have worked fine. the wood boring bit was nice cuz was only $2.
MIGHTYMOUSE is offline  
Old 07-22-2004, 03:12 PM
  #11  
TT-TECH Veteran
iTrader: (29)
 
Inspector12's Avatar
 
Join Date: Mar 2003
Location: Pearland
Posts: 4,770
Likes: 0
Received 0 Likes on 0 Posts
Default

My Vortech kit supplied the drill bit and rotabroach. Look around it is there if you bought the kit new if it is used maybe you could call the original owner and see if he has it. It is not a tool that you need everyday for sure. I did what Tapout said before I found it in another box a few hours later etc...
Inspector12 is offline  
Old 07-22-2004, 03:28 PM
  #12  
Launching!
Thread Starter
iTrader: (3)
 
Join Date: Dec 2001
Location: AL USA
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Default

I bought it used.
Tapout is offline  
Old 07-23-2004, 10:32 AM
  #13  
TECH Enthusiast
 
Join Date: Aug 2003
Location: Downers Grove,IL
Posts: 596
Likes: 0
Received 0 Likes on 0 Posts
Default

The 9/16" rotabroach cuts through the oil pan like butter. Vortech uses it because it cuts a much better hole than a drill bit and sends the chips out rearwards real nice to keep them out of the pan.
S_J_H is offline  

Thread Tools
Search this Thread
Quick Reply: what is a rotabroach bit?


About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: