Timing- / cam-alignment, new CCT's, valves...

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MacV2
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Re: Timing- / cam-alignment, new CCT's, valves...

Post by MacV2 » Fri Sep 21, 2018 10:03 am

I've found some time in my busy schedule & created this...

https://www.vtr1000.org/phpBB3/viewtopi ... 31&t=42689
Lowering the tone since 2007...

vivec
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Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Sat Sep 22, 2018 9:39 am

Did compression test on both cylinders.

- no plugs
- ice cold engine
- using starter motor for about 7 seconds
- throttle fully opened
- choke out

Rear cylinder gives 148psi, but the front only 120 :(.

Is there something that needs to 'settle' first?! Because it's kind of a dissapointment to be 28psi short of the rear.

Front one has been taken apart, rear one hasn't.
Replaced head gasket, exhaust valves and some shims to get them more into spec. Everything is torqued up to spec.

The manual states that 164psi for new and fully warmed up bike is the norm...

vivec
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Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Sat Sep 22, 2018 10:50 am

I'm quite sure about valve seating and gasket fitting...
I'm wondering if I didn't put too thick shims on... that might cause the valves not closing properly.

Would / could this cause a 28psi difference?!

I know; look and you shall see... but asking here is just a bit quicker and easier before taking stuff apart again :wink:

vivec
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Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Sat Sep 22, 2018 3:42 pm

Pulled the camcover off and found that 1 intake valve clearance is 0.09mm off (0.16 is prescribed and it's 0.07mm). That's a lot, but can that be a 28psi difference?!

tony.mon
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Location: Norf Kent

Re: Timing- / cam-alignment, new CCT's, valves...

Post by tony.mon » Sun Sep 23, 2018 8:56 pm

You reground the valve seats, didn't you?
If so, they'll take a few miles to settle in their seats.
Check again in a couple of hundred miles.
And yes, you need to reshim, the tolerance is 13 to 19.
It's not falling off, it's an upgrade opportunity.

vivec
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Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Mon Sep 24, 2018 8:53 am

yeah, reground and seated well (gasoline would not penetrate).
I'll order some exact shims from the stealer tomorrow. Hopefully that will increase the psi a fair bit already.

Fingers crossed!

vivec
Posts: 36
Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Sun Oct 28, 2018 2:56 pm

After a few weeks of holiday / vacation, today was the day I started it back up...

And it ruuuuunnnnssss !!!! :D :D :D

Had it idle for about 2 minutes, then did some revs. Did all that about 3 times, and will do it a few more times today probably :lol: .

I do hear some light ticking in the front, but only if you really really listen well.

I read here that ticking when cold is quite normal / acceptable, and that this should go away once warm.
Is this true? The bike hasn't warmed up properly yet, since it's only idling with some light revs.

I'm really glad the beast runs again.
Thanks for all your tips and advice on this forum! Really appreciated!

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Wicky
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Re: Timing- / cam-alignment, new CCT's, valves...

Post by Wicky » Sun Oct 28, 2018 4:04 pm

It may be that your whole purpose in life is simply to serve as a warning to others.

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sirch345
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Re: Timing- / cam-alignment, new CCT's, valves...

Post by sirch345 » Sun Oct 28, 2018 4:46 pm

vivec wrote:
Sun Oct 28, 2018 2:56 pm


I read here that ticking when cold is quite normal / acceptable, and that this should go away once warm.
Is this true? The bike hasn't warmed up properly yet, since it's only idling with some light revs.

That sounds quite normal to me for manual CCT's,

Chris.
A closed mouth gathers no foot. :thumbup:

tony.mon
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Location: Norf Kent

Re: Timing- / cam-alignment, new CCT's, valves...

Post by tony.mon » Sun Oct 28, 2018 4:59 pm

Agreed, as long as the tick goes away after a couple of minutes, all good.
It's not falling off, it's an upgrade opportunity.

vivec
Posts: 36
Joined: Wed Jul 25, 2012 10:05 am

Re: Timing- / cam-alignment, new CCT's, valves...

Post by vivec » Sat Apr 20, 2019 11:18 am

Good weather today, started the beast again.
What bothers me, is that the exhaust from the front-cylinder smokes somewhat at the header at startup. Always. Gets less when it warms. Dissapears all together when truely warm. It's not a lot, just those whifs of white-ish smoke.

But that exhaust (front cylinder) at the end also 'flutters' when I rev and release. It's noticably different from the other one.
So it doesn't flutter at the manifold, it flutters at the very end of the exhaust. The muffler.

What could this be? Could the exhaust manifold leak and cause fluttering further down!? Or would the fluttering indicate something within the cylinder wrong?

I can ride the bike and it has quite a bit of power.
Can't say if it has 'all the power', been too long since I drove it last ;).

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Wicky
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Re: Timing- / cam-alignment, new CCT's, valves...

Post by Wicky » Sat Apr 20, 2019 12:02 pm

Could be an airleak in the manifold header that's ticking - there's a copper crush washer there and a graphite seal the join at the header link pipe connector with a clamp.

https://www.bike-parts-honda.com/honda- ... 00/2/11510

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What's your location? Post it your User control panel so it shows and maybe a local nearby fellow Storm owner can have a listen / comparison / or there's Workshop day gatherings of experienced owners,
It may be that your whole purpose in life is simply to serve as a warning to others.

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