VFR800 VTEC Valve Adjustment (How-to)

Hey guys, I see a lot of guys concerned about how 'difficult' it is to do a VTEC valve clearance inspection / adjustment.

Really, the only difference between it and non-VTEC is that you must lock the VTEC valves so that you can properly inspect the clearances and adjust. You can buy a tool for this, or make something easily to lock the valves.

At any rate ... someone made a video on this and it's pretty decent. Hope it helps / encourages more 6th gen owners to do their own valves and not be afraid of the VTEC maintenance:

[video=youtube;XEimE9DptP4]https://www.youtube.com/watch?v=XEimE9DptP4[/video]

 

Man, is that guy fast or what? I bet Honda has sent oot ninjas to whack this guy for cutting into their profit margin.

 

I believe this was the video that someone saw the time length of and thought that the inspection was only a 20 minute job!

 

The shims are on my bucket list.

 

I think if you have the tool made, the longest part of the job is removing the tank, airbox, fairings, and other junk to get at the valve covers. LOL

I'll let you know how long mine actually take when I check mine at 40,000 km (probably this winter the way I'm putting the miles on the bike already this year).

 

After watching the part in the video about how you have to mod the buckets to get an accurate measurement on the vtec I dislike vtec even more.

 

You're not "modding" the buckets ... you're simply putting a stopper in the bobbin / actuator that goes inside the VTEC buckets to simulate the VTEC being engaged. No black magic here.

Yes, it will take you a little longer since you have to remove the cam shafts, but really, it's not that much additional time. Maybe 1-2 beers extra??

 

Can we pull the crank and balance it and have the heads ported at the same time?

This darn tool making may be the root of most of our problems:

https://www.youtube.com/watch?v=ypEaGQb6dJk

Or, this is just a shitload of harleydoods partying..

 

That looked like Hardley guys partying with SOW ...

 

I realize that Jeff, wrong terminology but still a pain.

 

I guess it's relative ... to me, I look at it as an extra 45-60 minutes of wrenching total at the worst.

I don't mind wrenching on my own bike, it's relaxing as almost nearly as fun as riding. If I had to do it every day - I'd probably hate it. LOL

 

I do almost all my own wrenching and like it most of the time. I do get overwhelmed at times as I have 4 bikes ( had 5, just sold one). If I had more time I would like wrenching more but when I have time I like to ride. Got to figure out how to give up sleep.

 

LOL ... that many bikes could do it.

I hear you, I can't even juggle 2 bikes. The '85 VF1000F I picked up over the winter is still waiting for a tank liner, fuel system flush, clutch slave rebuild, and general fluid / filter change. I'd rather be riding as well. Trying to save my projects for the winter - if I lived in FL, I'd be riding year round and would have the exact same problem as you.

 

Im having low end issues and members have said to check the valves, ive watched the video and read the shop manual. From what im gathering on an 02 if im worried about low end I really dont need to screw with the vtec valves, just focus on the standard valves. Take off the valve covers, check the clearance on the standard valves, put the covers back on, bitch that it wasn't my issue. Im going on the assumption that the valves are fine, so the less I have to take off and back on the better.

 

Based on the gas pouring out I am concerned about the cam alignment and there not being time for combustion. Do you know if someone prior to you adjusted the valves? They would have had to in order to mess this up. If yes, check the service manual for inspecting the alignment via marks on the cam.

 

jsjamboree ... you have fuel pouring out somewhere?

What kind of low end issues are you having?

 

Jeff, read this:

http://vfrworld.com/forums/showthread.php/50635-Issue-Cold-Start-and-Idle-rough

 

Haha knight you are everywhere. I'll be checking for cam alignment tonight/tomorrow but while I've got the valve covers off i should check the valves themselves as someone said (dealer suspected as well but that could just be them wanting all my money). Saw this and thought i would check. Seems I should be able to check the regular valve clearance without taking off the cams and screwing with all the vtec stuff. Vtec kicks in like a bat outta hell so I'm not so concerned with those right now.


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The time to do the extra work for the vtec valve check is rarely the problem Honda actually having the expensive buckets in stock without having to wait 2 weeks is another story

The shim is actually part of the bucket on the vtec valves the non vtec valves are just normal Honda sized shims

 

Alright timing is at t1 mark, feeler is at .178 which is the bottom of spec. I can't get it in. I have checked every valve and not one of them goes in... So either I'm doing something wrong or someone before reallllllllly fucked it up


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