cam cover gasket blown out - Honda RC51 Forum : RC51 Motorcycle Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 05-24-2012, 03:41 PM Thread Starter
Junior Member
 
Join Date: Apr 2012
Location: leeds uk
Posts: 7
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
cam cover gasket blown out

Hi today in really warm weather and with the bike being in the sun for a few hours I decided to go for a ride but as I started the engine after a quick break there was a big bang and a puff of smoke it turns out the two disc shaped parts of the cam cover gasket had blown out. What can cause this could it be a blocked breather or a overheating problem as my fan works when it wants (New thermostat on order) cheers
Deano is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 05-24-2012, 05:50 PM
Banned
 
Join Date: Dec 2011
Posts: 3,636
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
An internal combustion engine is just a big air pump, it needs to vent excess pressure via the crankcase vent/venting...I'm gonna hazard a guess and say the crankcase breather is not doing its job.

I've have lots of time in motors just not the RC haven't any reason to so I don't know exact location of crankcase vent but I'm sure some that does will chime in. My guess somewhere between the Vee's of the motor.



nobody is offline  
post #3 of 12 (permalink) Old 05-24-2012, 08:19 PM
Moderator
 
SubSailor's Avatar
 
Join Date: Oct 2008
Location: Sarasota, FL
Posts: 6,456
Mentioned: 24 Post(s)
Quoted: 88 Post(s)
The crankcase vent is on the upper front valve cover.
It has a hose that routes to the crankcase vent catch bottle on the right side, near the rear cylinder (next to the thermostat).
From there, there's a hose that attaches to the airbox to vent crankcase vapors into the airbox to be burned.
And it also has a drain hose and cap for the catch bottle on the left side, that periodically needs draining (good thing to check every oil change).
SubSailor is online now  
 
post #4 of 12 (permalink) Old 05-25-2012, 12:23 AM
Lifetime Premium
 
gts455's Avatar
 
Join Date: Oct 2009
Location: Deutschland/Colorado Springs
Posts: 3,169
Mentioned: 4 Post(s)
Quoted: 37 Post(s)
i think i have some spare gaskets if you need them.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
2005 Yamaha R6 (Sold)
gts455 is offline  
post #5 of 12 (permalink) Old 05-25-2012, 01:43 AM
Senior Member
 
Join Date: Jan 2011
Location: down under
Posts: 136
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Not a common problem on the RC, but you do have to check/drain the crankcase/airbox hose every now and then

2000 VTRSP1
mondo is offline  
post #6 of 12 (permalink) Old 05-26-2012, 02:54 AM Thread Starter
Junior Member
 
Join Date: Apr 2012
Location: leeds uk
Posts: 7
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Just checked the breather and catch bottle everything looks ok and blows through ok I changed the airfilters just in case and I'm gunna change the map on the pc3 just in case its running too lean and overheating the oil. I am interested int the rear valve cover gasket if you've got one GTs455. It's been a hectic few months with the rc51 I got it in Feb its coils went down two weeks later then three weeks after that the old pc3 went pop then four weeks ago the lhs rad developed a crack and had to be recored and now after only the 2nd good ride it goes pop again I bet Colin Edwards or joey Dunlop never had this much trouble hahaha
Deano is offline  
post #7 of 12 (permalink) Old 05-26-2012, 08:04 AM
Lifetime Premium
 
gts455's Avatar
 
Join Date: Oct 2009
Location: Deutschland/Colorado Springs
Posts: 3,169
Mentioned: 4 Post(s)
Quoted: 37 Post(s)
Quote:
Originally Posted by Deano View Post
Just checked the breather and catch bottle everything looks ok and blows through ok I changed the airfilters just in case and I'm gunna change the map on the pc3 just in case its running too lean and overheating the oil. I am interested int the rear valve cover gasket if you've got one GTs455. It's been a hectic few months with the rc51 I got it in Feb its coils went down two weeks later then three weeks after that the old pc3 went pop then four weeks ago the lhs rad developed a crack and had to be recored and now after only the 2nd good ride it goes pop again I bet Colin Edwards or joey Dunlop never had this much trouble hahaha
sure thing. will take a look today. Had bought a new set when i did my cams, but they did not need changing.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
2005 Yamaha R6 (Sold)
gts455 is offline  
post #8 of 12 (permalink) Old 05-28-2012, 03:35 PM Thread Starter
Junior Member
 
Join Date: Apr 2012
Location: leeds uk
Posts: 7
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Hi guys quick update on the gasket front its still blowing out but it looks worn and there is evidence of a sealent where the discs are so I'm hoping its just,a weakened gasket I did check my oil and coolant and neither was contaminated so it should be a simple fix
Deano is offline  
post #9 of 12 (permalink) Old 05-29-2012, 04:56 AM
Lifetime Premium
 
gts455's Avatar
 
Join Date: Oct 2009
Location: Deutschland/Colorado Springs
Posts: 3,169
Mentioned: 4 Post(s)
Quoted: 37 Post(s)
Tried finding the gaskets with no luck, i may have already gotten rid of them or misplaced them. Really thought i had a set. Sorry guys.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
2005 Yamaha R6 (Sold)
gts455 is offline  
post #10 of 12 (permalink) Old 05-29-2012, 09:48 AM
Member
 
Join Date: Aug 2011
Location: Orrington, Maine
Posts: 70
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
http://www.bikebandit.com/houseofmot...1330#sch304616

Parts break down of the valve covers............. I would check the reed valves in the valve covers. If you have to replace them replace the gaskets as well (and don't forget to replace the gaskets around the bolts as well!)

Sean
Sport is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda RC51 Forum : RC51 Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On

 
For the best viewing experience please update your browser to Google Chrome