R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 06-30-2008, 06:22 PM   #1
Tech Regular
 
sm1nts2escape's Avatar
 
Join Date: Jul 2006
Location: MD
Posts: 444
Trader Rating: 16 (100%+)
Default Bearing removal and install?Any tricks?

Was wondering what temperature you get your motor to remove and install the bearings?I had to heat my motor up to 375 degrees in the oven to get the bearings to come out.I started the temp at 200 and after gradually working my way up to 300 I sprayed some wd on it to lube it up some since the bearings wern't coming out then gradually went up to 375 where they finnaly came out.I am working on a grp/ninja 21.
sm1nts2escape is offline   Reply With Quote
Old 07-01-2008, 06:39 AM   #2
Tech Adept
 
Join Date: Jan 2007
Location: Switzerland, Europe
Posts: 124
Default

I use a RB bearing puller and a Novarossi bearing installer, don't need to heat up engine and works good evrytime.
__________________
ich weiß
hello is offline   Reply With Quote
Old 07-01-2008, 06:52 AM   #3
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,196
Default

Quote:
Originally Posted by sm1nts2escape View Post
Was wondering what temperature you get your motor to remove and install the bearings?I had to heat my motor up to 375 degrees in the oven to get the bearings to come out.I started the temp at 200 and after gradually working my way up to 300 I sprayed some wd on it to lube it up some since the bearings wern't coming out then gradually went up to 375 where they finnaly came out.I am working on a grp/ninja 21.
Be glad your bearings didn't come loose at 200 degrees, because this is not even the working temp for an engine!....

I let my oven heat up to 400+ (225 Celcius) before even trying to get the bearings out....

Any tool used to put bearings in with a cold crankcase, will be done with atleast some force... this I don't like....
__________________
Serpent
M7H is offline   Reply With Quote
Old 07-23-2008, 08:50 PM   #4
Tech Regular
 
CKmaxx's Avatar
 
Join Date: Sep 2005
Location: Sask, Canada
Posts: 485
Trader Rating: 1 (100%+)
Default

Like what was said above...I heat my engines to at least 425 degrees and usually the rear bearing falls right out and the front one needs at little tap with punch and hammer.

And also, I don't agree with extracting and installing bearings in a cold crankcase. It could result in a loose bearing fitment. Then you're hooped....
CKmaxx is offline   Reply With Quote
Old 07-27-2008, 04:32 AM   #5
Tech Elite
 
rcfoolz's Avatar
 
Join Date: Sep 2003
Posts: 3,327
Trader Rating: 22 (100%+)
Send a message via Yahoo to rcfoolz
Default

I agree that with the engine case being cold, putting the bearing in causes an impropper fit. I use the OFNA bearing puller when removing the bearing when the engine is around 350-375deg.
__________________
Am I going back racing?...Hmmm.. Not anytime soon... But soon enough.
rcfoolz is offline   Reply With Quote
Old 07-30-2008, 09:21 PM   #6
Tech Addict
 
DogboneS's Avatar
 
Join Date: Dec 2006
Location: - NH - USA -
Posts: 552
Trader Rating: 20 (100%+)
Default

I had the best luck with my Milwaukee heat gun(on High,500+ deg) with my Ninja. Front bearing seal failed, and the swap out took 5 minutes to heat, get the bearing out, and install the new bearing while the case was still hot. Hang the block off a coat hanger, and use caution. A 1/2 inch wooden dowel is handy to have close when doing the swap, won't scratch internals, usually fits to remove front bearing. Assemble with the crank as the alignment tool.
DogboneS is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
P21-5 Rear Bearing Removal ehartman_49348 Nitro Off-Road 1 01-21-2008 04:15 PM
Tool to install Ball Bearing ScanneR Nitro On-Road 3 03-27-2006 07:28 AM
bearing removal beer_ninja Rookie Zone 10 10-21-2005 10:05 AM
Proper clutch shoe removal and install? Ducati-Rider Onroad Nitro Engine Zone 6 04-15-2004 12:29 AM
Crankcase bearing removal? aussiedanny Australian Racing 15 04-01-2004 05:14 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 03:45 PM.


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.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net