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76 KZ900 13 Mar 2023 07:45 #881458

  • Moose1800
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You should split the carbs.  The small rubber coated fuel Tee's are almost sure to be cracked and need replacing.
I agree ! it's almost a given they will leak.

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76 KZ900 13 Mar 2023 09:36 #881462

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You should split the carbs.  The small rubber coated fuel Tee's are almost sure to be cracked and need replacing.
I agree ! it's almost a given they will leak.

Or will soon.  There's nothing worse than gas leaking on a hot engine, just below your crotch!  
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76 KZ900 13 Mar 2023 13:50 #881469

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That's the plan, for now they're going on to see how it runs shifts etc. Connected battery today after my key came in the mail and all good, starter spins, spark at plugs all lights and horn work, pleasantly surprised.

76 KZ900
76 XLCH
78 KZ1000
04 FLSTFI 120 ci

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76 KZ900 13 Mar 2023 18:20 #881473

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If the tees between the carbs are still in good condition you can revive them by soaking them in gasoline overnight.  That will stop the leaks.
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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76 KZ900 14 Mar 2023 00:18 #881479

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I do some thin shrink tube to get a press fit and leak free fuel tees.

 
 
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76 KZ900 14 Mar 2023 06:19 #881484

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Heat shrink may not survive long exposed to gasoline, especially when exposed to ethanol.

We 're aware of a process in which Teflon tape is wrapped around fuel tees to improve the seal.  We have seen carbs on which it was done perform for many years with no leaks.  Teflon appears to be quite resistant:to gasoline and ethanol:
www.calpaclab.com/teflon-ptfe-compatibility/

Good Ridin'
slmjim & Z1BEBE
 
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Last edit: by slmjim+Z1BEBE. Reason: Typo

76 KZ900 14 Mar 2023 08:20 #881489

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Heat shrink may not survive long exposed to gasoline, especially when exposed to gasoline.

 
I did this shrink tube trick in 2017, no leaks.
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76 KZ900 14 Mar 2023 14:34 #881511

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Seams either Teflon or shrink wrap the the carbs need to be unganged. At that point buy replacement tees or upgrade to aluminum or brass with ORings. Much cheaper/easier to change at the next rebuild. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
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76 KZ900 17 Mar 2023 17:17 #881654

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Got it fired up! Fired almost instantly, cylinders 1 and 2 are fine 3 and 4 not so much, once past half throttle clears up and pulls strong. No air filters on it, pulled carbs and will blow out carbs 3-4 with compressed air. Pilots jets are clear. Cold ccp before starting was 125 each cylinder and all plugs getting good spark. What should I expect for head pipe temps using a IR gun?

76 KZ900
76 XLCH
78 KZ1000
04 FLSTFI 120 ci

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76 KZ900 17 Mar 2023 19:00 #881661

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The min./max. temp is irrelevant, all 4 cylinder/header temps should be equal as possible.
 

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76 KZ900 17 Mar 2023 19:23 #881662

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Found my spare heat shrink tubed fuel tees. Just in case if you want to give it a try and save some money.

 
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76 KZ900 18 Mar 2023 15:26 #881718

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Thank you for the offer, I believe I have everything needed to reassemble when time comes.

76 KZ900
76 XLCH
78 KZ1000
04 FLSTFI 120 ci

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