retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Sept 15, 2013 9:50:10 GMT
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hey guys.
sorry for asking the question as I know this topic has been talked to death, but ive done a lot of googling and been thrown about all over the place.
basically ive gone and bought a set of CBR600F carbs to fit to my straight four 1.6 8v engine. it took me a while but I eventually settled on these as ive read a few people have had success with them before and I found an advised setup of:
1.6 8v - CBR600F-X carbs with the jets drilled out from standard 132 to 155,and 900 needles.
I'm fine with all of this and I'm going to have to make my own manifold as I cant find a kit for my engine but what angle should I be running these on? I was under the impression motorbike carbs could run at any angle but then ive stumbled across lots threads saying they need to be at the correct angle depending on weather there horizontal or vertical carbs, and thats where ive become lost and frustrated.
Thanks for all the help guys:)
Joe
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Last Edit: Jul 13, 2014 8:21:07 GMT by retrojoe
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Sept 15, 2013 10:26:19 GMT
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This may sound really stupid but do you not recreate the angle they were sat on the bike?
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Sept 15, 2013 11:16:02 GMT
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yes i think so, but i don't really know anything about bikes so I'm not sure what the angle is. It would be a lot easier if i didnt have to get the angle the same, so how crucial is the angle? would they work as well if i just mounted them horizontally to the engine?
or does anyone know how much Bogg Brothers would charge to make me one, lol.
Thanks guys.
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shin2chin
Part of things
Making curse word cars slightly better
Posts: 820 
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Sept 15, 2013 14:00:34 GMT
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If you look at the float chamber where it joins the carb body you should aim to have that line as horizontal as possible.
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1977 PORSCHE 2.0na 924
1974 VW Beetle 1600
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Sept 15, 2013 14:27:11 GMT
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Brilliant:) cheers mate.
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Sept 15, 2013 15:41:31 GMT
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I need to make a manifold for a vitara engine, but i forgott it needs extra channels for water cooling, a big pipe needs to go to the top of the rad and another one to the heater matrix. does anyone on here want to make it for me?
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shin2chin
Part of things
Making curse word cars slightly better
Posts: 820
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Sept 21, 2013 6:40:22 GMT
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Can you post a pic of the manifold?
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1977 PORSCHE 2.0na 924
1974 VW Beetle 1600
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MrSpeedy
East Midlands
www.vintagediesels.co.uk
Posts: 4,791
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Sept 23, 2013 18:57:52 GMT
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Where abouts are you? I do TIG welding and have access to laser profiling. I also have a machine shop at my disposal  |
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Sept 26, 2013 18:31:42 GMT
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ooo! sounds awsome:)
I'm down south in gosport if thats any good?
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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ok, i want to bash on with this project as ive put it aside for a little while due to a new job but its still constantly on my mind. Next question! This is the metal i had in mind to use for the flange plate, its about 2.3mm thick steel. should bee relatively easy to work with although after looking at many home made manifolds it appears that people use a lot thicker stuff! i assume this is so it doesn't warp under heat, but i cant find a written explanation anywhere.  What thickness metal is the best to use? is my stuff good enough as it is steel and not ally like some manifolds? |
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sparkyt
Posted a lot
selling stuff
Posts: 1,767
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You'll need a lot thicker than that bud 7 to 10 mm ish as when you bolt it up you'll bend it leaving air gaps . Not good .. I can sort you out some if needed
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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thanks mate:) i think i might be able to source some but the problem will come when trying to shape the metal, as i think i might struggle with anything that big, cutting to size, drilling holes ect ect...
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MrSpeedy
East Midlands
www.vintagediesels.co.uk
Posts: 4,791
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As Sparkyt said, you need at least 6mm and preferably 8mm for the flanges.
Aluminium is a lot more malleable than steel and will distort when you bolt it up if too thin
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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thats true, but i only have a mig welder so i could only use steel really. how easy is it to shape 8mm steel with a grinder and a hole saw?
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Its fairly labour intensive, but can be done with some patience, and a decent die grinder. Use your gasket as a guide, that makes life alot easier.
I have access to a laser cutter, if you send me your gasket, I could price up the cost of getting one done for you. Could turn it around in about 7-10days.
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cbr600 carbs prob be about 45 degrees on bike, if that makes any difference
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mt2man
Posted a lot
Posts: 1,366
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I'm in gosport too and i need to build a bike carb manifold for my 1.6 almera engine! haha
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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sweet mate. il race ya! lets see who gets it done first:)
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sparkyt
Posted a lot
selling stuff
Posts: 1,767
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Oct 13, 2013 12:09:20 GMT
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Mark it out and post it to me ill plasma cut it for you . You can grind it and drill it .. pm me if you want
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retrojoe
Part of things
Life is to short to drive boring cars.
Posts: 74
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Oct 15, 2013 20:14:51 GMT
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cheers mate, i might have found someone who can do it local but if that falls through i will deffinately contact you.
thanks again
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