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Bruce , possible YH replacement SU’s
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uk1979 View Drop Down
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    Posted: September-26-2015 at 12:09pm
There you go Bruce... main body will fit but to centre it I have had to undo the float chamber mount will need to make up a bracket for it, will need to mod the valley tray to give more room under the carb’s.
When in will add 2’ 3/4 inch to the height of engine.
YH’s carbs have a 1’ 9/16 ventures the SU are 2’ inch,
Not much to report still on honey doo’s duty.

Cheers Roger.
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juniorwoody View Drop Down
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Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote juniorwoody Quote  Post ReplyReply Direct Link To This Post Posted: September-26-2015 at 12:20pm
Is your goal to increase performance or reliability Roger?
That looks like a rather large honey do list there bud. Any pictures of the Starflite or is it on the back burner?
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uk1979 View Drop Down
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Points: 1410 		Post Options Post Options   Thanks (0) Thanks(0)   Quote uk1979 Quote  Post ReplyReply Direct Link To This Post Posted: September-26-2015 at 2:36pm
Jack I’m hoping to build a max CI Y block, so yes just a performance upgrade and still keeping the engine as low as possible, there has been talk of stroker cranks by Scat but nothing as yet.
The YH’s are good on a standard engines but will hold back a bigger CI engine with big valve heads.

Starflite is well hope to move it forward over the winter.

Cheers Roger.
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8122pbrainard View Drop Down
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Points: 41040 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: September-26-2015 at 3:55pm
Roger,
Very interesting but will they fit under the dog house?


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lewy2001 View Drop Down
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Points: 2234 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: September-26-2015 at 9:07pm
Roger I wonder if a sidedraught CD Stromberg would have a lower profile? They were basically SU equivalents. Same as the SU's should be available in 1.5" 1.75" and 2"

Used to have a few different triple sidedraught carby setups on hot rod straight six motors in my boy racer days
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Had SU's on a '67 MGB.   Had to add oil to the carbs every time I drove it.
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Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote juniorwoody Quote  Post ReplyReply Direct Link To This Post Posted: September-26-2015 at 10:27pm
No stranger to sidedrafts here I bought a new MG Midget in 1970 after returning from VietNam. What a can of worms that was but as I remember the carbs performed ok. Still not having had enough of cans of worms I bought a 1962 Mrecedes 220b around 1980. It had sidedrafts as well. Were they Solex? Can't remember, but I remember getting a vacume gauge to synchronize them.
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Originally posted by juniorwoody juniorwoody wrote:

I remember getting a vacume gauge to synchronize them.

The triple Zenith's on the Chris/Hercules are always lots of fun too!


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lewy2001 View Drop Down
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Points: 2234 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: September-27-2015 at 1:11am
Another more recent option would be the Mikuni or Keihin carbs on motorbikes. Bikes took quite a few more years to switch to fuel injection. Throttle control and feel is big part of riding a bike fast.

I had a 2001 model V twin 1000c Honda that used two 1.9" (48mm) carbies was able to purchase after market jetting from Dynojet as well.
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Originally posted by lewy2001 lewy2001 wrote:

Roger I wonder if a sidedraught CD Stromberg would have a lower profile? They were basically SU equivalents. Same as the SU's should be available in 1.5" 1.75" and 2"

Used to have a few different triple sidedraught carby setups on hot rod straight six motors in my boy racer days


Thanks Mark ... I hadn't thought about them or big V twin bike carbs shall look into them and report back.

Cheers Roger.
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Riley View Drop Down
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Roger, that's really interesting. I would think those would make a difference.

What are you building, a terrace?
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uk1979 View Drop Down
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Points: 1410 		Post Options Post Options   Thanks (0) Thanks(0)   Quote uk1979 Quote  Post ReplyReply Direct Link To This Post Posted: September-29-2015 at 6:09am
Bruce, I'm putting in a base for a summer house/shed and a new green house.

Will update more on possible carbs, once I have fully checked out Marks Idea's.

Cheers Roger.
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Riley View Drop Down
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Keep us dated. Have you started on the boat?    
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Points: 1870 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dreaming Quote  Post ReplyReply Direct Link To This Post Posted: September-29-2015 at 3:19pm
I had SU's on my Datsun Roadster as well,   you should be able to find something cheaper than the Jag/rover types Roger mentioned. I'm always amazed at how creative and knowledgeable some of you guys are!
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