ST1100 carb adjustment...

Honda Pan-European 1st generation (German design)

ST1100 carb adjustment...

Postby mbrST1100 » 02 Jun 2017, 17:50

I intend to go over my '00's carbs this weekend, colour tune for idle, carbtune for re-sync afterwards...
Tools, including two big ass office fans (for cooling the beaST while stationary) are available, mojo could use a boost though...

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Keep tires down, ATGATT, STOC# 637 (Sept.'97), PanEuro# 42 (Oct.'97), candy glory red '92 (sold), re-furbed '94 (wicked), strawberry '00 (daily)
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Re: ST1100 carb adjustment...

Postby Pan Rider Jack » 02 Jun 2017, 21:48

Have fun, I'm going to go for a ride, I have a mechanic for the carbs :)
Ride safe Ride free
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Re: ST1100 carb adjustment...

Postby mbrST1100 » 04 Jun 2017, 16:48

So, spent the afternoon on this...
Note to myself: get a better flashlight and the OEM idle adjustment tool...
Had the carbs out twice (wise to replace those carb isolators every two years, so their not rock hard...), no chance to reach those pesky adjusters with regular tools...
The rubber mat was hardened and crumbling, got thrown out...
Found the idle screws on the OEM position of 2+1/8th turns for the AR model, set them to 2+1/2 turns now.
Colour Tune now shows a steel-blue burn with random yellow flashes, seems OK to me, don't want to get it too rich, as such would cause problems at higher altitudes up in the mountains.
Synced the carbs after that, took 4 do-overs (with cooling off wait) to get the best compromise across the rev band.
What have I gained besides dirtying myself a little?
Rock solid idle, tach needle like bolted to the 1000 line, no pulses, runs like an electric motor...
Silky, smooth acceleration from low end...
No tickling throttle tube anymore (the main reason I went through the task) up to 5500rpm, at 6000 onwards minor vibration which is tollerable...
Next will be new t/belt and the shebang connected with that, a valve check thus doing the carbs again, preferably with the idle tool avail by then.
But that's still a couple of thousand kilometres in the future
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Keep tires down, ATGATT, STOC# 637 (Sept.'97), PanEuro# 42 (Oct.'97), candy glory red '92 (sold), re-furbed '94 (wicked), strawberry '00 (daily)
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Re: ST1100 carb adjustment...

Postby alans1100 » 05 Jun 2017, 02:05

mbrST1100 wrote:) up to 5500rpm, at 6000 onwards minor vibration which is tollerable...
...
In what circumstances does one get an 1100 to rev more than 4000 rpm in normal everyday use. Granted our maximum legal speed limit is 110 k/h and that is around 3500 rpm. Even while in the lower 50 k/h town limits and in the 1st/2nd gears I wouldn't get above 3000 rpm.

Other than that I should balance the carbs on mine again since they haven't been done since the timing belt was done at 150,000 km. I noticed an oil leak on the right side since the last oil change. Seems to be the RH cam cover gasket though I did see signs of oil around the filler cap - time for some degreaser and to watch the area to see where it's coming from.
OzStoc Member ( http://www.ozstoc.com ) FarRider No. 921

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Re: ST1100 carb adjustment...

Postby mbrST1100 » 05 Jun 2017, 02:42

In case you want to pass a couple of cars at >100mph, or keep some squits at bay up in the twisties...
Regular rpm on winding rural roads ~4000, cruising speed on motorways ~5000... unless someone starts to bug you...

My previous '92 ST ran fully smooth up to the limiter at 8500, I'd like to get the current '00 into this state as well.
TBC...

... transmitted from a CAT S60 thing ...
Keep tires down, ATGATT, STOC# 637 (Sept.'97), PanEuro# 42 (Oct.'97), candy glory red '92 (sold), re-furbed '94 (wicked), strawberry '00 (daily)
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