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Author Topic: YZF750/1000R - The Fly  (Read 9013 times)

Offline furu14

  • Posts: 18
Re: YZF750/1000R - The Fly
« Reply #40 on: Mar 11, 2017, 07:23:25 »
Using the 41, just do a "roll-on throttle".
with no ekshaust throttlevalve the thunderace engine is a little "lumpy" in the midrange anyway.. :P
but importent to isolate the intake air from heat of engine and radiator.

Offline canyoncarver

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Re: YZF750/1000R - The Fly
« Reply #41 on: Mar 11, 2017, 22:49:19 »
Using the 41, just do a "roll-on throttle".
with no ekshaust throttlevalve the thunderace engine is a little "lumpy" in the midrange anyway.. :P
but importent to isolate the intake air from heat of engine and radiator.


That's good to know about isolating the heat.  The stock setup used a rubber sheet with heavy aluminum backing to keep the heat off the carbs and airbox. 
It was in pretty bad shape so I'm going to have to find a suitable replacement.




Just because it's cool, look down into the intakes at three valves:

--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--

Offline canyoncarver

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Re: YZF750/1000R - The Fly
« Reply #42 on: Mar 12, 2017, 00:22:41 »
I hooked it up to the battery in my truck but it still didn't want to turn over well.  So, I pulled the plugs and the engine turns over fine.  Plugs back in, turns over like it should.


The stock 750 carbs are a bit crusty. 


--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--


Offline canyoncarver

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Re: YZF750/1000R - The Fly
« Reply #44 on: Mar 16, 2017, 16:03:58 »
So it appears the PO did open these carbs at one point because....they lost one of the float needles.    I went to the Yamaha dealer just to check and I can get one in a week for 28$, they only sell them as a needle/seat set.  The seats on mine are in good shape.  I'm going to see what other carbs I can cannibalize for a damn needle.
--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--

Offline canyoncarver

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Re: YZF750/1000R - The Fly
« Reply #45 on: Mar 17, 2017, 14:17:01 »
I didn't have any compatible needles that would work so I now have 4 new Yamaha needle/seat sets on the way.  I was halfway considering splurging on a set of FCR39's but that's just fantasizing for now.
« Last Edit: Mar 17, 2017, 14:18:34 by canyoncarver »
--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--

Offline canyoncarver

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  • 'hacking is learning'
Re: YZF750/1000R - The Fly
« Reply #46 on: Mar 25, 2017, 00:48:54 »
There is no such thing as a quick carb clean. 
--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--

Offline clem

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Re: YZF750/1000R - The Fly
« Reply #47 on: Mar 25, 2017, 11:11:20 »
Funny how $5 needles can add up when you're sorting things out.

Sent from my SAMSUNG-SM-G920A using DO THE TON mobile app

"After every war there are soldiers who refuse to surrender. To this day there are still thousands who cling to their 30+ year old motorcycles, thinking that the war is still on, refusing to concede that the four-strokes have won"

1972 DS7 http://www.dotheton.com/forum/index.php?topic=45886.msg505995#msg505995
1983 CB550sc bobber http://www.dotheton.com/forum/index.php?topic=30599.30

Offline canyoncarver

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Re: YZF750/1000R - The Fly
« Reply #48 on: Mar 30, 2017, 00:14:41 »
Funny how $5 needles can add up when you're sorting things out.

I chuckled pretty hard at least twice reading this in the last few days before I got off my ass and cleaned my bike:

I realized I have non stock goodies:
--
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
The Shovelhead springer chopper
A bunch of KZ's...some Suzukis', and a disassembled CB550
--

Offline Maritime

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Re: YZF750/1000R - The Fly
« Reply #49 on: Mar 30, 2017, 08:39:11 »
bonus
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson