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Author Topic: 400/4 build. Paused due to other commitments. But starting up again  (Read 41872 times)

Offline McCabe-Thiele (Ted)

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #420 on: September 15, 2023, 08:31:39 AM »
Quote from: ComfySofa on September 14, 2023, 10:11:58 PM
Had to come back in as I've got an early start tomorrow I've got spare HT but no plugs to go in the coils....I'll be back in tomorrow night...and the weekend.

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Switch the leads 2 & 3 and see if the problem moves to number 2 cylinder as long as you have not shortened the leads too much. Also worth seeing if the plug is wet on number 3, easy enough to dry it off and heat it up a tad if you have a gas ring.
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Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #421 on: September 15, 2023, 11:02:46 AM »
No prob ..I'll try that when I get home ..cheers sir ..thanks for all the help and advice...

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Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #422 on: September 15, 2023, 05:04:39 PM »
Ok - got some garage time for a bit....swapped the HT's over on the one coil....i think last night i didnt let it run about 10 seconds of popping from cylinder 3 and then it started to get hot.....

So, while it was sitting there at 3k running (from cold) i started to push things on the carbs and eiphany moment....pushing those big brass hex bolts down (theres a couple of mm of springloaded play downwards and the revs dropped down) - then it conked out as ive backed off the tickover screw....

Theres some screws directly behind that look like they can be adjusted...

Edit: tried adjusting them....all the way out or all the way in doesnt make any difference......if i adjust all the way in i loose the ability to push them down so the bike sits at 3k...

Hey - its progress i can actually get it to tickover now...albeit pushing all four brass bolts down..!

Just adding here for visibility...i did speak to Roo just now but he was in a bad signal area so sounded like Norman Collier...
« Last Edit: September 15, 2023, 05:30:01 PM by ComfySofa »
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Offline Oddjob

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #423 on: September 15, 2023, 06:39:33 PM »
Norman Collier was far betting looking. Roo looks like they threw away the baby and raised the afterbirth
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Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline McCabe-Thiele (Ted)

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #424 on: September 15, 2023, 06:59:28 PM »
I've sent you a PM hope it helps.
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Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #425 on: September 15, 2023, 07:12:08 PM »
Got it thanks sir....ill reply to that and say ive just spoken to Roo and hes coming over Sunday....ive got some coursework to do first though....he's a harsh mistress!
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Offline Laverdaroo

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #426 on: September 15, 2023, 07:19:02 PM »
Well stop blindly fiddling with things, you’re making it worse


As for you Ken, can you stop leaving your passport photo lying about, it’s making the milk curdle in the kitchen……..


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1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Deano400

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #427 on: September 15, 2023, 08:05:35 PM »
🤣🤣🤣
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Offline Johnny4428

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #428 on: September 15, 2023, 08:24:59 PM »
🤣🤣🤣
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1961 Matchless G3
1974 Honda CB550K1. Running resto,
1978 Honda CB550K3.
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3

Offline McCabe-Thiele (Ted)

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #429 on: September 19, 2023, 05:18:43 PM »
Have you sorted out the carbs yet?
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Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #430 on: September 19, 2023, 05:34:28 PM »
Nah - stuck....did the air/screw thing - didnt change anything - carbs still go to 3/4k...itll have to wait....
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Offline McCabe-Thiele (Ted)

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #431 on: September 19, 2023, 05:42:11 PM »
Were you not able to do the bench sync yet?

Pretty sure that will sort your idle out if pressing down on the brass caps slows it down.
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Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #432 on: September 19, 2023, 05:53:05 PM »
Thats the next job...ill be taking the carbs out on the weekend...ill see if i can follow what you said...gotta take the supercorsa's off the zed and put the winter tyres on now..!
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Offline McCabe-Thiele (Ted)

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #433 on: September 19, 2023, 06:12:37 PM »
Looking out of our window you will need rain tyres not snow!
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Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline ComfySofa

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Re: 400/4 build. Paused due to other commitments. But starting up again
« Reply #434 on: September 19, 2023, 06:15:22 PM »
Not so much "winter tyres" but a set of Continentals instead of supercorsa v4's! - rather use them when the hot weather is back.....
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