Author Topic: 500 four carbs  (Read 249 times)

Offline bobv7

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500 four carbs
« on: February 22, 2020, 03:08:55 PM »
Between the 2 pairs of carbs where the spring is there are 2 vertical pipe fittings and I don't have anything connected to them. Should I have?

Cheers, Bob

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: 500 four carbs
« Reply #1 on: February 22, 2020, 03:14:48 PM »
Just vent pipes, no problem if no pipe is fitted but nice if there is.
Im a Nurse, trust me, this won't hurt.....much !!!

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Offline bobv7

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Re: 500 four carbs
« Reply #2 on: February 22, 2020, 03:18:29 PM »
Ta, Julie

I can't see through the tank so I'll no bother then! ;D

Offline Lobo

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Re: 500 four carbs
« Reply #3 on: February 23, 2020, 11:48:00 AM »
... been too long since I rebuilt my carbs, but in the event of an accident is there a chance of fuel exiting the vent pipes onto the hot engine / battery area etc? Hence the OEM tubing down to the centre stand....
Just a thought. (& appreciating we’re not talking the float bowl overflows here)

Offline Nurse Julie

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Re: 500 four carbs
« Reply #4 on: February 23, 2020, 12:15:46 PM »
... been too long since I rebuilt my carbs, but in the event of an accident is there a chance of fuel exiting the vent pipes onto the hot engine / battery area etc? Hence the OEM tubing down to the centre stand....
Just a thought. (& appreciating we’re not talking the float bowl overflows here)
Indeed, you are 100% correct Simon. From the safety perspective the tubes should be fitted as Mr Honda intended. I have them fitted on all my bikes but know many that don't bother.
Im a Nurse, trust me, this won't hurt.....much !!!

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Offline bobv7

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Re: 500 four carbs
« Reply #5 on: February 23, 2020, 12:18:12 PM »
Hmmmm...take your point, but DS's price for these pipes are a bit heavy and as I've already spent the next year's holiday fund on the bike maybe someone suggest an alternative? ???

While I have the carbs on the bench I want to statically set the mixture screws and sync the carbs. Any recommendations on this?
« Last Edit: February 23, 2020, 12:39:27 PM by bobv7 »

Offline Nurse Julie

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Re: 500 four carbs
« Reply #6 on: February 23, 2020, 12:48:12 PM »
Hmmmm...take your point, but DS's price for these pipes are a bit heavy and as I've already spent the next year's holiday fund on the bike maybe someone suggest an alternative? ???

While I have the carbs on the bench I want to statically set the mixture screws and sync the carbs. Any recommendations on this?
Don't buy the tubing from DS, get it from Planet Silicone
https://www.ebay.co.uk/str/planetsilicone
Set the air screws 1½ turns out to start with. and follow this procedure for bench syncing by Bryan
http://www.sohc.co.uk/index.php/topic,17769.0.html
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline bobv7

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Re: 500 four carbs
« Reply #7 on: February 23, 2020, 01:35:58 PM »
Thanks Julie

You wouldn't happen to know the diameter of tube to order?

Cheers, Bob

PS Whatever you do be careful if you just google Planet Silicone! Oh! good grief............ :-[

Offline deltarider

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Re: 500 four carbs
« Reply #8 on: February 24, 2020, 01:42:29 PM »
You wouldn't happen to know the diameter of tube to order?
3,5mm.

Offline bobv7

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Re: 500 four carbs
« Reply #9 on: February 24, 2020, 03:04:13 PM »
Cheers, mate! :D

 

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