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Today's topics:
* Compression Test without a cambelt - 4 messages, 3 authors
http://groups.google.com/group/rec.autos.makers.honda/t/cae25dfcae85c676?hl=en
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TOPIC: Compression Test without a cambelt
http://groups.google.com/group/rec.autos.makers.honda/t/cae25dfcae85c676?hl=en
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== 1 of 4 ==
Date: Tues, Aug 16 2011 10:04 pm
From: Juan-Pierre Herboth
Thanx Jim and Tegger.
@Tegger:I spend some time going through the stuff on your site and it
was quite helpful. From what I can see finding the o-rings under the
rockerarm support is difficult in my area (Cape Town, South Africa).I
was only able to find it at the dealership. By the looks of things the
previous mechanic had a similar experience and decided to just put
liquid sealer under there and the 1st problem I found when the car
died was oil soaked spark plug. Your site helped me realise the seal
problem.However like Jim said,I cant get to a shop and dont have a
compressor.Ill check but I have a little electric compressor used for
pumping up tyres.Its not very powerful, but I see the manual talking
about 250 kPa,which is 2.5 bar, my tyres is pumped to 2 bar so that
little thing should work Ill just have a look at how to set it up.
@ Jim: I was thinking the same thing about the compression. The car
ran fine and the oil usage was good.Little oil leak, but its an old
car and my other old car also had a leak,its something I can live
with. Ill put the head and check the clearance.If Im looking for a big
gap then it should be rather easy to see.It was interesting to note
that #1 cylinder had the intake valves full open,so I think I might
have 4 valves that might be bend.Ill check and let u guys know.
Thanx again guys.e stuff on your site and it was quite helpful. From
what I can see finding the o-rings under the rockerarm support is
difficult in my area (Cape Town, South Africa).I was only able to find
it at the dealership. By the looks of things the previous mechanic had
a similar experience and decided to just put liquid sealer under there
and the 1st problem I found when the car died was oil soaked spark
plug. Your site helped me realise the seal problem.However like Jim
said,I cant get to a shop and dont have a compressor.Ill check but I
have a little electric compressor used for pumping up tyres.Its not
very powerful, but I see the manual talking about 250 kPa,which is 2.5
bar, my tyres is pumped to 2 bar so that little thing should work Ill
just have a look at how to set it up.
@ Jim: I was thinking the same thing about the compression. The car
ran fine and the oil usage was good.Little oil leak, but its an old
car and my other old car also had a leak,its something I can live
with. Ill put the head and check the clearance.If Im looking for a big
gap then it should be rather easy to see.It was interesting to note
that #1 cylinder had the intake valves full open,so I think I might
have 4 valves that might be bend.Ill check and let u guys know.
Thanx again guys.
== 2 of 4 ==
Date: Wed, Aug 17 2011 7:19 am
From: "Tinkerer"
"Juan-Pierre Herboth" <jpherboth@gmail.com> wrote in message
news:d68fcb7f-57cf-40a4-bd11-627b3c8570f1@h7g2000yqm.googlegroups.com...
> Thanx Jim and Tegger.
> @Tegger:I spend some time going through the stuff on your site and it
> was quite helpful. From what I can see finding the o-rings under the
> rockerarm support is difficult in my area (Cape Town, South Africa).I
> was only able to find it at the dealership. By the looks of things the
> previous mechanic had a similar experience and decided to just put
> liquid sealer under there and the 1st problem I found when the car
> died was oil soaked spark plug. Your site helped me realise the seal
> problem.However like Jim said,I cant get to a shop and dont have a
> compressor.Ill check but I have a little electric compressor used for
> pumping up tyres.Its not very powerful, but I see the manual talking
> about 250 kPa,which is 2.5 bar, my tyres is pumped to 2 bar so that
> little thing should work Ill just have a look at how to set it up.
> @ Jim: I was thinking the same thing about the compression. The car
> ran fine and the oil usage was good.Little oil leak, but its an old
> car and my other old car also had a leak,its something I can live
> with. Ill put the head and check the clearance.If Im looking for a big
> gap then it should be rather easy to see.It was interesting to note
> that #1 cylinder had the intake valves full open,so I think I might
> have 4 valves that might be bend.Ill check and let u guys know.
> Thanx again guys.e stuff on your site and it was quite helpful. From
> what I can see finding the o-rings under the rockerarm support is
> difficult in my area (Cape Town, South Africa).I was only able to find
> it at the dealership. By the looks of things the previous mechanic had
> a similar experience and decided to just put liquid sealer under there
> and the 1st problem I found when the car died was oil soaked spark
> plug. Your site helped me realise the seal problem.However like Jim
> said,I cant get to a shop and dont have a compressor.Ill check but I
> have a little electric compressor used for pumping up tyres.Its not
> very powerful, but I see the manual talking about 250 kPa,which is 2.5
> bar, my tyres is pumped to 2 bar so that little thing should work Ill
> just have a look at how to set it up.
> @ Jim: I was thinking the same thing about the compression. The car
> ran fine and the oil usage was good.Little oil leak, but its an old
> car and my other old car also had a leak,its something I can live
> with. Ill put the head and check the clearance.If Im looking for a big
> gap then it should be rather easy to see.It was interesting to note
> that #1 cylinder had the intake valves full open,so I think I might
> have 4 valves that might be bend.Ill check and let u guys know.
> Thanx again guys.
>
>
You appear to have hiccups or something. Not only did your message appear
twice but each copy had two copies inside. Bit like those Russian dolls.
--
Tinkerer
== 3 of 4 ==
Date: Wed, Aug 17 2011 8:12 am
From: jim beam
On 08/16/2011 09:38 PM, Juan-Pierre Herboth wrote:
> Thanx Jim and Tegger.
> @Tegger:I spend some time going through the stuff on your site and it
> was quite helpful. From what I can see finding the o-rings under the
> rockerarm support is difficult in my area (Cape Town, South Africa).I
> was only able to find it at the dealership. By the looks of things the
> previous mechanic had a similar experience and decided to just put
> liquid sealer under there and the 1st problem I found when the car
> died was oil soaked spark plug.
while that leak is annoying, it's not very important except on #3
cylinder. the rocker pillar on that cylinder has the oil riser and if
that leaks, you could oil-starve the whole rocker assembly. if you're
absolutely stuck on the o-rings, find the smaller size that fits the oil
riser, and use sealer on the rest.
re sealers, that rtv silicone stuff is next to useless. the companies
that make it have GREAT sales people, but its physical properties are
inappropriate for engine internals, particularly hot oil. [which is of
course why engine manufacturer don't use it when making the engine in
the first place! check out http://www.epm.com/material_guide.htm -
"Poor resistance to oils"]
ime, the best sealer out there is something called "hylomar". it's a
blue goo and it remains tacky - it never sets. and best of all, it's
removable with the correct solvent if you do any re-work, so you don't
scratch anything up removing silicone crap.
> Your site helped me realise the seal
> problem.However like Jim said,I cant get to a shop and dont have a
> compressor.Ill check but I have a little electric compressor used for
> pumping up tyres.Its not very powerful, but I see the manual talking
> about 250 kPa,which is 2.5 bar, my tyres is pumped to 2 bar so that
> little thing should work Ill just have a look at how to set it up.
> @ Jim: I was thinking the same thing about the compression. The car
> ran fine and the oil usage was good.Little oil leak, but its an old
> car and my other old car also had a leak,its something I can live
> with. Ill put the head and check the clearance.If Im looking for a big
> gap then it should be rather easy to see.
it's not always easy to see because the valve head tends to obscure
things. but it shows up big time on the rocker arm/valve lash.
> It was interesting to note
> that #1 cylinder had the intake valves full open,
one cylinder's valves will /always/ be open if the cam and rockers are
in place. but it doesn't mean they're bent or damaged - it's normal and
what you want to see. the cam has 4 "preferred" positions due to the
springs and the cam lobes. when in any one of these 4, the pistons can
freewheel. if you replace the rockers and haven't fiddled with the
adjustment, you'll find the rockers go back on with exactly the same
adjustment as when they came off.
> so I think I might
> have 4 valves that might be bend.Ill check and let u guys know.
> Thanx again guys.
--
nomina rutrum rutrum
== 4 of 4 ==
Date: Wed, Aug 17 2011 10:08 am
From: Juan-Pierre Herboth
@Jim:As always thanx for the reply.I saw the extra hole on #3 cylinder
and was thinking it has to do with oil supply.Interesting thing is
that some of the liquid sealer the mechanic used was actually
partially obscured the oil hole. I should be getting the o-rings from
Honda tomorrow and Ive already gotten all the other stuff.Will most
likely assemble tomorrow and update on what I found.Thats if it doesnt
rain=)Im working in the open so rain wont do.BTW what is it that you
do?I see you giving advise on multiple honda forums.Thanx again.
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