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ascotvt500enthusiasts · The original Honda VT500 Ascot club.

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  • Members: 1023
  • Category: Honda
  • Founded: Nov 12, 2001
  • Language: English
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Ignition okay... Valves? Not so much!   Message List  
Reply Message #18578 of 26658 |
Well after much tinkering, pondering and bugging of Neil (thank you) I
think the ignition is working fine. I got her to fire up tonight and
both pipes got hot so she was firing on all two. Still making a lot of
racket though. So, per Neil's advice I decided to make sure the valves
were adjusted right. I pulled the little covers off the number one
valve cover and noticed that there were little dings in the cover....
weird. Then I noticed there was no lock nut on one of the intake
valves... And so here we go... pull stuff off to make room... pull off
the valve cover and start to look around and I find the nut... then the
metal ring that goes on top of the spring but I couldn't find the stay
(little part that holds it all together on the valve stem). I hit the
Clymer manual and it looks like I have to pull the head to get that all
back together. This raises a couple questions. 1. Is there a way to get
this all back together without pulling the head? 2. Does that passage
that the cam chain comes up go all the way to the bottom of the crank
case? I'm guessing the stay might have made the journey! 3. Is there
any other damage I should be looking for resulting from the parts
floating around? FWIW: The nut and ring were pretty nicely stashed out
of the way. No scratches or dings to speak of. One other interesting
note. Not only did the idiot that last adjusted these not tighten the
nut enough, the other clearances are ZERO!!! I couldn't cram my
smallest feeler in them let alone 0.1mm. I pulled the covers on the
rear and all the hardware is in place there. I'm hoping once I get all
the valves corrected this baby should purr... I put pics of the carnage
on my picasa page here http://picasaweb.google.com/kenconvery/Ascot
<http://picasaweb.google.com/kenconvery/Ascot>  


[Non-text portions of this message have been removed]




Thu Nov 20, 2008 6:29 am

kenbob74
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Message #18578 of 26658 |
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Well after much tinkering, pondering and bugging of Neil (thank you) I think the ignition is working fine. I got her to fire up tonight and both pipes got hot...
Ken
kenbob74 Offline Send Email
Nov 20, 2008
6:29 am

Well here is what I would try next, on the underside of the engine is round cap with an allen type female socket for removal. (I have actually drained the oil...
Jeanette Weaver
bigpepeweaver Offline Send Email
Nov 20, 2008
7:03 am

... is round cap with an allen type female socket for removal. (I have actually drained the oil from this point but the o-ring seal on the cap will probably...
ascot_500 Offline Send Email Nov 20, 2008
7:13 am

... wrote: Dude ! people don't make those kinda mistakes do they ? That almost looks like intentional tampering to cause damage to the first poor soul to fire...
ascot_500 Offline Send Email Nov 20, 2008
7:11 am

Oh !@#$. I hate to be the bearer of bad news, but I wouldn't bother opening that cover in the crankcase and looking for metal bits. That engine needs to come...
Neil Slavin
neilslavin Offline Send Email
Nov 20, 2008
2:01 pm

Yikes... I guess I know why it sat for a couple years eh? If the back clearances are normal or > 0 would we still be looking at an overheated engine? Could...
Ken
kenbob74 Offline Send Email
Nov 20, 2008
4:07 pm

The head in question has to come off and the engine has to come out to do it. Take care to inspect the top your piston for damage when its apart. The used...
Jeanette Weaver
bigpepeweaver Offline Send Email
Nov 20, 2008
6:24 pm

... I suppose it's possible, but it's not likely. If that were the case, I'd look for a blockage in an oil line or a water line to the head. Both could cause...
Neil Slavin
neilslavin Offline Send Email
Nov 20, 2008
9:11 pm

Okay I read through all the clymer manual stuff regarding engine and head removal last night and I'm going to pull it tomorrow. I've been making a rundown of...
Ken
kenbob74 Offline Send Email
Nov 21, 2008
6:44 pm

I do not know how bad the situation is, but I am wondering if it makes sense to set all the valve clearances properly, inspect all the parts, and ensure that...
residentg Offline Send Email Nov 21, 2008
7:40 pm

I would not recommend that approach. Say the valves are stretching but the seats haven't degraded yet. You'd set the clearances right, and the compression...
Neil Slavin
neilslavin Offline Send Email
Nov 22, 2008
12:13 am

Ken, I would take the head to an auto machine shop and tell the machinist to "do the valves." Bring him the Clymer manual if he's not familiar with the engine....
Neil Slavin
neilslavin Offline Send Email
Nov 21, 2008
11:46 pm

Hi Ken: I wouldn't take that approach, just get another head. They are very common, Ascot and Shadow are the same. If you can't find one or both close to you...
Herb Gaudreau
herbgaudreau Offline Send Email
Nov 22, 2008
1:08 am

... of ... valves ... off ... the ... all ... get ... out ... all ... carnage...
Ken
kenbob74 Offline Send Email
Nov 23, 2008
11:38 pm

... wrote: I agree with Neil . i don't think those are scratches in the cylinder wall - the're more like polished spots from the aluminum nicks in the piston...
ascot_500 Offline Send Email Nov 24, 2008
3:49 am

Since the valves look like there all there ,it looks like something came in through the intake ,or the spark plug hole .Cylinder looks like it has very little...
Arnold Moos
sharpsman2000 Offline Send Email
Nov 24, 2008
12:23 am

Just had a thought .If the valve is bent at all the guide might have a piece broken off of it . ... From: Arnold Moos To: ascotvt500enthusiasts@yahoogroups.com...
Arnold Moos
sharpsman2000 Offline Send Email
Nov 24, 2008
1:13 am

I'd say it's pretty likely that the valve is bent. You can't get that denting in the piston to without bending the valve. Actually, consider yourself lucky. If...
Neil Slavin
neilslavin Offline Send Email
Nov 24, 2008
2:42 am

Actually, looking at the photos again, the scratches are lined up pretty well with the dents in the piston. So I'd guess the piston was "peened" at those...
Neil Slavin
neilslavin Offline Send Email
Nov 24, 2008
2:47 am

I've been following this episode with interest, because I've just been dealing with some of the same issues. I had to pull my Ascot engine from the frame...
jsharp113 Offline Send Email Nov 24, 2008
5:24 pm

I am in full agreement with John here. Good used parts are available and should be used. I'm not sure what the story is on the "new" valve and valve seat...
Herb Gaudreau
herbgaudreau Offline Send Email
Nov 24, 2008
7:20 pm

Well after letting the machine shop guy have a look at it he said things look pretty good. Yes the one valve the kissed the piston is slightly bent and the...
Ken
kenbob74 Offline Send Email
Nov 25, 2008
4:45 pm

Sounds like good news, Ken. Those prices for the machine work are pretty much in line with what I expected. When I saw someone saying $300-400, I was worried...
Neil Slavin
neilslavin Offline Send Email
Nov 25, 2008
5:01 pm

Since I'm the culprit who threw out the $350-$400 estimate, I'd better clarify - that was based on the assumption that the old valves could not be refaced (per...
jsharp113 Offline Send Email Nov 26, 2008
5:06 pm
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