How difficult is it to change valves? Any Recommendations?
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From: Northern, NJ
How difficult is it to change valves? Any Recommendations?
My timing belt slipped and I have bent some valves. What are the proper methods of removing and replacing the valves? Any suggestions while the head is off? What tools do I need?(Spring compressor,etc)
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From: hybrids.jp
Re: How difficult is it to change valves? Any Recommendations? (JeffNA)
If you bent the valve you might also need new valve guides. I doubt you'll be able to get the guides out in your garage. When you install new valves you'll need to get a valve job so that they seat properly. Just take the head to a machine shop and have them take care of it. Or send it out the Portflow, have Tom take care of it and get a nice port/polish job while you're at it.
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From: WI
Re: How difficult is it to change valves? Any Recommendations? (RyanR)
Unless the valve stem is REALLY bent, the odds of a messed up guide are slim.
Honda runs real loose tolerances with the guide so generally they can take
a lot of abuse.
Jeff: Pull the springs and valves out, replace the guide seals, check the
seats for any pitting/wear, if theres a lot of wear, get them grinded to clean
them up. Depending on the valve job you get, or if you dont get one done, then
you will want to lap the valves to ensure a good seal.
Honda runs real loose tolerances with the guide so generally they can take
a lot of abuse.
Jeff: Pull the springs and valves out, replace the guide seals, check the
seats for any pitting/wear, if theres a lot of wear, get them grinded to clean
them up. Depending on the valve job you get, or if you dont get one done, then
you will want to lap the valves to ensure a good seal.
Thread Starter
Joined: Jan 2002
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From: Northern, NJ
Re: How difficult is it to change valves? Any Recommendations? (sgT)
Unless the valve stem is REALLY bent, the odds of a messed up guide are slim.
Honda runs real loose tolerances with the guide so generally they can take
a lot of abuse.
Jeff: Pull the springs and valves out, replace the guide seals, check the
seats for any pitting/wear, if theres a lot of wear, get them grinded to clean
them up. Depending on the valve job you get, or if you dont get one done, then
you will want to lap the valves to ensure a good seal.
Honda runs real loose tolerances with the guide so generally they can take
a lot of abuse.
Jeff: Pull the springs and valves out, replace the guide seals, check the
seats for any pitting/wear, if theres a lot of wear, get them grinded to clean
them up. Depending on the valve job you get, or if you dont get one done, then
you will want to lap the valves to ensure a good seal.
The guides are cracked and the valve tapped the piston. Do I need to replace my pistons now. It tapped the piston but I don't know the extend of the damage.
I removed the head and all the valves/springs/retainers off the head. The valves were fugged up. All sixteen valves were bent. When the belt slipped, I was in 5th gear cruising at 70MPH. WTF? I wasn't even racing. [Modified by JeffNA, 3:22 AM 5/20/2002]
Thread Starter
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From: Northern, NJ
Re: How difficult is it to change valves? Any Recommendations? (JeffNA)
My Type R head is milled .20mm. I have spec B's and a thinner head gasket and my valves tapped the piston. All 16 valves are bent. I don't want this happening again. Can I get a thicker headgasket to solve this problem?
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From: Eastern Coast Rocks, NY, USA
Re: How difficult is it to change valves? Any Recommendations? (JeffNA)
Sorry to hear about this..... I need to come see you sometime this week.Has anyone else had this a problem with the PE timing belts? I am about to buy one from Jeff.
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Thread Starter
Joined: Jan 2002
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From: Northern, NJ
Re: How difficult is it to change valves? Any Recommendations? (Christian)
The sad part about this is that I have 8 PE timing belts in my house for sale but I never changed the OEM belt. I was waiting for exam week to finish and graduation. 
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