Cam chain tensioner idea?

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Cam chain tensioner idea?

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CBR >> Past CBR Models >> CBR 1000F "Hurricane" >> Cam chain tensioner idea?

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Cam chain tensioner idea? - 5/6/2005 7:43:02 PM

Trips

Posts: 801
Joined: 3/31/2005
From: Perth (Western Australia)
Status: offline

Has anybody here ever had a CCT apart?

I have an idea I want to bounce of ppl.

Would it be possible to modify the CCT with a stiffer & longer spring so that it works purely off spring pressure?

Or is it possible to modify the design so that it gets more oil?

Also below is a post I copied of a post by a guy who owns a Honda Spada and what he did to fix his CCT problem. Just wondering if something like that would work for ours?

----------------
If you own a Spada you are probably familiar with a top end rattle
that develops over time in these engines.
My bike has been super rattly for the last 20-30,000k and I have fixed
the problem completely WITHOUT replacing the 65,000k old camchains.

This procedure only applies to the 'hydraulic' camchain tensioner
variant in action on Honda Australia delivered models (not sure about
the grey imports).
The camchain tensioners on my bike work using a heavily damped spring
system.
However oil supply to the damper is decidedly sketchy- the
spring/damper sits in a little bucket, fed by a tiny hole in a tube
branching off from the camshaft oil pass pipe.
The bucket has no drain hole in it and so grit and sludge builds up in
the bottom of the bucket, being heavier, and causes the damper piston
to stop working correctly.

I took the following steps to go from a bike that sounds like a
helicopter to one that sounds more like an electric motor:

1. Remove rocker covers
2. Remove camshaft holders and camshafts
3. Remove camchain tensioners

4. Soak both tensioner units and oil pass pipes in kerosene for
several days, then blast the grit and shit out with a WD40 or similar
can until the action of the cylinder is smooth and no more gunk is
flowing out.

5. When you're satisfied that the dampers are free of shite, pour
clean engine oil into the 'bucket' and pump it until the kero has
flowed out and been replaced by engine oil and it becomes very
difficult to move the tensioner's position.

6. Reassemble. Take care to use plenty of assembly grease and oil, use
the correct torque values and tightening sequence and take care timing
the engine:
----------------------------------------------

_____________________________

Remember the light at the end of the tunnel may be an oncoming train!

Post #: 1

RE: Cam chain tensioner idea? - 5/9/2005 6:45:27 AM

cbroar

Posts: 82
Joined: 4/8/2005
Status: offline

Local spanner monkey has modified the CCT on his 88 cbr1000. From what i can gather he added some washers to preload the spring which sorted his probs. Said he'd sort my cct for 90 euro's which isn't bad but it'll be awhile yet before it needs doing.
Mark

(in reply to Trips)

Post #: 2

RE: Cam chain tensioner idea? - 8/20/2005 7:30:55 AM

MarkR

Posts: 975
Joined: 8/20/2005
From: Gold Coast, Australia
Status: offline

Have brought a 94' CBR1000F
I have, I believe a noisy Cam Chain, I think
Can I change the CCT by removing only the rocker covers, camshaft holders and camshafts?
And I have been told to use after market Cam Chain and bits as there are better and last longer, is this right?

(in reply to cbroar)

Post #: 3

RE: Cam chain tensioner idea? - 8/20/2005 1:20:44 PM

slowpoke

Posts: 518
Joined: 8/6/2005
From: Denver, Colorado
Status: offline

Trips, cleaning out the CCT seems like a good idea. I will be checking my valve adjustment soon, and I will see how stretched the cam chain is. I'm sure a Honda mechanic would just change CCT's because of the labor, but it would probably be worth it to the owner to try and clean it first. Plus, I would be curious to see how the thing works. I wonder how much a new one costs?

(in reply to MarkR)

Post #: 4