Aftermarket valves? - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

User Tag List

 
LinkBack Thread Tools
post #1 of 9 Old 03-13-2014, 10:48 PM Thread Starter
 
Join Date: 02-17-2014
Location: Sacramento CA
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Aftermarket valves?

Is there a decent alternative to the OEM 33$ exhaust valve? just throwing out partzilla's cost. Just seems expensive still when you have to do a few of them.
sonicysa is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 03-14-2014, 4:23 AM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: Aftermarket valves?

Quote:
Originally Posted by sonicysa View Post
Is there a decent alternative to the OEM 33$ exhaust valve? just throwing out partzilla's cost. Just seems expensive still when you have to do a few of them.

Kibblewhite and Ferrea are the obvious ones that come to mind.
Why are you replacing valves?

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
post #3 of 9 Old 03-14-2014, 11:16 AM Thread Starter
 
Join Date: 02-17-2014
Location: Sacramento CA
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: Aftermarket valves?

Just have a few that are pitted. Didn't even know if you could mix n match with oem and aftermarket etc. I have seen you guys post some things like you wouldn't want to use Ti with the stock springs due to spring weight.. But I guess that is just the bottleneck to spending so much more money on Ti and not getting the action you want with still having a heavy spring.
sonicysa is offline  
Sponsored Links
Advertisement
 
post #4 of 9 Old 03-14-2014, 11:18 AM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: Aftermarket valves?

Quote:
Originally Posted by sonicysa View Post
Just have a few that are pitted. Didn't even know if you could mix n match with oem and aftermarket etc. I have seen you guys post some things like you wouldn't want to use Ti with the stock springs due to spring weight.. But I guess that is just the bottleneck to spending so much more money on Ti and not getting the action you want with still having a heavy spring.

Too pitted to recut or lap them in?
Personally, I wouldn't mix OEM and aftermarket. although they'd probably be just fine.

Pointless using ti valves with OEM springs.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
post #5 of 9 Old 03-14-2014, 1:49 PM Thread Starter
 
Join Date: 02-17-2014
Location: Sacramento CA
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: Aftermarket valves?

Did you think I meant that the seat on the head itself was pitted?
I really was trying to say that the valve face was.
If I put new valves in yea I would re-cut the seat then lap I guess.

The pitting--to me--looks to be deeper than what compound could reduce via lapping but then I've never lapped before so not sure. Also I thought you weren't really suppose to depend on lapping for any pitting of the valve itself since it's a lot harder material correct?
sonicysa is offline  
post #6 of 9 Old 03-14-2014, 1:54 PM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: Aftermarket valves?

Quote:
Originally Posted by sonicysa View Post
Did you think I meant that the seat on the head itself was pitted?
I really was trying to say that the valve face was.
If I put new valves in yea I would re-cut the seat then lap I guess.

The pitting--to me--looks to be deeper than what compound could reduce via lapping but then I've never lapped before so not sure. Also I thought you weren't really suppose to depend on lapping for any pitting of the valve itself since it's a lot harder material correct?

No, I assumed you meant that the sealing face of the valve was pitted.
If the face of the valve is pitted I can't see it causing any problems unless it's very close around the edge.
I'd have to see how bad the pitting is to decide if it's repairable.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
post #7 of 9 Old 03-15-2014, 12:16 AM Thread Starter
 
Join Date: 02-17-2014
Location: Sacramento CA
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: Aftermarket valves?

Well here's a pic as seen through a loop. There are three in this condition. This is after a quick brass brushing wheel took off the cruft.
sonicysa is offline  
post #8 of 9 Old 03-15-2014, 12:35 AM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: Aftermarket valves?

Quote:
Originally Posted by sonicysa View Post
Well here's a pic as seen through a loop. There are three in this condition. This is after a quick brass brushing wheel took off the cruft.

Okay, that is the sealing face.
Is the seat the same?
You will need to cut the seat and grind the valve or replace it. I would try grinding the valve first and then lap it into the seat. But check the depth of the seat first, if cutting it drops the valve too far into the head you'll probably want to replace the seat as well.
The cutting tools are not particularly expensive, although if you consider $33 to be too expensive for a valve then you're unlikely to want to spend the money on the cutters, though I doubt aftermarket valves are going to be much cheaper - unless China makes some, which I wouldn't recommend using anyway.

Try Neway for valve recutting tools - Neway Manufacturing Inc.
I bought a bunch of cutters to allow me to recut most modern-ish motorcycle valves for about $300 some years ago - a great investment if you're doing regular engine work.

A cheaper alternative is probably to simply swap a complete secondhand head onto your engine.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
post #9 of 9 Old 03-15-2014, 6:03 AM Thread Starter
 
Join Date: 02-17-2014
Location: Sacramento CA
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: Aftermarket valves?

So far from what I can tell the seats don't look that bad. I finally have a free weekend here to clean it so I'll look closer.
Yea I was checking out the neway cutters. And yea a good price n investment in my mind.
I thought the with these valves u didn't want to grind them because they are coated?
Also, don't remember if I saw a spec for how deep/far into the head is too far for existing seats. Have any advice there?
Also, may have just come across a cheap second head. Have to break into it to see if it's worth it.
I have a whole different set of q's about the guides as I think those May have been part of the reason for the condition of these. Figured I should start a diff thread for that though. : )
sonicysa is offline  
Reply

  Lower Navigation
Go Back   Honda Motorcycles - FireBlades.org > Honda Motorcycle Models > Honda FireBlade

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda Motorcycles - FireBlades.org 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
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Starter valves....? temperedtim929 Honda FireBlade 1 02-23-2009 10:29 PM
Valves on a cbr929rr Gregory Waters General Discussion 17 04-13-2008 5:03 PM
954 Valves psustang89 Honda FireBlade 26 06-14-2006 7:57 AM
adjusting the valves DavidGS Honda FireBlade 2 03-13-2004 4:20 PM
lapping valves sportbiker929 Honda FireBlade 9 05-23-2003 10:09 PM

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 Off
Pingbacks are Off
Refbacks are Off

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