milko
Part of things
Posts: 164
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Jan 18, 2010 21:47:42 GMT
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My R6 setup, all done for under £100 inc the R6 fuel pump.   |
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Potter
Part of things
'E who dares wins,eh Rodders??!
Posts: 304
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Jan 19, 2010 17:21:52 GMT
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Any difference tween R1 and R6 Milko?
Real neat looking set up there by the way!
Imp,the soldering-bits-together thing worries me about MJ. I hate car electrics! Is MS a DIY kit as well?
Manta, what sort of GSXR would that be? Sorry but I know absolutely nothing about bikes.
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More cars than sense or money!🙄
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Jan 19, 2010 17:46:25 GMT
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R1 is a 1000cc engine, R6 is a 600cc engine, best to go for the R1 carbs.
As for GSXR you would want at least the 1000cc ones, if not bigger if you can get them!
J
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MrT
Posted a lot
Just who did Mr Hitler REALLY think he was kidding?
Posts: 1,773
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Jan 19, 2010 17:52:20 GMT
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I've got a set of 38mm's from a ZX-7R to go on my Sprint engine for the TR7 - just about the optimum size for a roadgoing 2.0...
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Jan 19, 2010 18:02:07 GMT
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Has anyone got any real-world experience of using bike carbs on their daily? You hear about folk 'getting them on' but rarely read about the longer-term results. Do they run smoothly? Start Ok from cold? Stay in tune OK? any flat spots etc? Hows the fuel consumption? Id love to hear a few stories from folk who've persevered with them.
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1974 Lancia Beta Saloon
1975 Mazda 929 Coupé
1986 Mazda 929 Wagon
1979 Mazda 929 Hardtop
1982 Fiat Argenta 2.0 iniezione elettronica
1977 Toyota Carina TA14
1989 Subaru 1800 Wagon
1982 Hyundai Pony 1200TL 2-dr
1985 Hyundai Pony 1200 GL
1986 Maserati 425 Biturbo
1992 Rover 214 SEi 5-dr
2000 Rover 45 V6 Club
1994 Peugeot 205 'Junior' Diesel
1988 Volvo 760 Turbodiesel Saloon
1992 Talbot Express Autosleeper Rambler
2003 Renault Laguna SPEARS OR REAPERS
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povey
Part of things
Posts: 700
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Jan 19, 2010 18:50:35 GMT
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Gight guys, i have a pinto 2 litre and i want bike carbs, whats best i will be running a ashely manifold and exhaust system, the engine has been freshly rebuilt and stuff will R1`s be best its a daily driver too so peak power is not top of the list i just want a bit more responciveness and power and Noise!! any info will be great
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Jan 20, 2010 22:43:47 GMT
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Has anyone got any real-world experience of using bike carbs on their daily? You hear about folk 'getting them on' but rarely read about the longer-term results. Do they run smoothly? Start Ok from cold? Stay in tune OK? any flat spots etc? Hows the fuel consumption? Id love to hear a few stories from folk who've persevered with them. I've recently bought Ian's (BiAS) bike carbed Micra & he had no problems with it & in my short term using it i'm impressed with bike carbs! In the past i've had twin 40 & twin 48 webbers on my old cars & there a twiddlers dream as there always needing adjusting as 1 day there running sweet & the next like a bag of spanners........Back to the Micra it starts fine from cold on choke & the motor lets you know when its time to put the choke back in,i'm impressed with the responce right through the rev range on the bike carbs in relation to twin webbers as it seems smoother & more constant with the power & i can't believe just how frugal on fuel it is when driving the daily commute to work & even when i drive it enthuastically it still gives good mpg unlike twin webbers that are like an alcoholic in a brewery...... Just my take on it from experience of owning both types of carbs...... Tim. |
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1974 Chevrolet C20 Camper Special Pickup Truck 2002 Fiat Multipla oil burner SOUTHWEST SWAPMEET southwests best car parts selling page on facebook for retro/custom/classic www.facebook.com/groups/249875865097198/ |
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B-8-D
Posted a lot
down to one car!!
Posts: 4,038
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people get so hung up on carb sizes for bike carbs on cars... the amount of people that tell me that 1000cc bike carbs will only support x amount of horsepower on a 2l engine etc... it really is irrellivent how big or small the bike carbs are on a engine as long as they are not massively choking an engine... think about it people bang on about 40mm r1 carbs on a 2l pinto wont produce any more than 160hp... etc that kind of thing... yet people are getting 185 to 200hp from 2l pintos using unmodded intakes and std (appart from choke plates removed) 32/36dgv 2 barrel carbs.... work out the area of the biggest restriction on both then tell me why (at a guess) 400cc bike carbs of arround 30mmid wont support more hp than the webber all set up right?  ? yet 400cc bike carbs are cheep as chips because everyone thinks they need huge ones.. again check out how much hp can be made with a single 50mm throttle body on std intake on a modern injection engine once it has been tuned and mapped... there is a limit and some one who can be bothered with the maths will prob be along to work out exactly how much hp can be produced theoretically bassed purely on the ammount of air that can pass through that size oriface then mixed with fuel.... at stoich'... also think about webbers take the dcoe45.. fitted to a 2l engine it may need need only 30mm chokes to provide decent pull to atomise fuel efficiently at lower rpms and give a decent drive.. that means the the biggest point of restriction is only 30mm per cylinder.. so no worse than 30mm 400cc bike carbs then?? also bike carbs are almost always cv carbs on 4 cylinder J bikes.. which meens you don't have to compromise the trade off of top end power for a decent low end drivability like fixed venturi carbs like dcoe webbers etc.. and don't have to waste so much fuel as fixed venturi who have to suddenly dump a great squirt of fuel in to keep a correct a/f ratio as the throttle is punched open suddenly ,as the slides will open up in responce to the throttle position AND engine load/speed... ok so there are some assumptions and ideals above but hopefully you will understand what I am saying.. and that is bike carbs ARE THE BEST FUELLING YOU CAN GET short of a very decent oe or mappable fuel injection...! end of!! you could say I like the beggers... lol si |
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Last Edit: Jan 21, 2010 1:50:54 GMT by B-8-D
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bike carbs ARE THE BEST FUELLING YOU CAN GET short of a very decent oe or mappable fuel injection...! So they should be considering the additional time and competitive environment they have been developed in. I also want to thank you for confirming what I thought was the case but didn't have the specific knowledge to know for sure. |
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Any more real lfe bike carb experiences?
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1974 Lancia Beta Saloon
1975 Mazda 929 Coupé
1986 Mazda 929 Wagon
1979 Mazda 929 Hardtop
1982 Fiat Argenta 2.0 iniezione elettronica
1977 Toyota Carina TA14
1989 Subaru 1800 Wagon
1982 Hyundai Pony 1200TL 2-dr
1985 Hyundai Pony 1200 GL
1986 Maserati 425 Biturbo
1992 Rover 214 SEi 5-dr
2000 Rover 45 V6 Club
1994 Peugeot 205 'Junior' Diesel
1988 Volvo 760 Turbodiesel Saloon
1992 Talbot Express Autosleeper Rambler
2003 Renault Laguna SPEARS OR REAPERS
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prey
Part of things
Posts: 856
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Has anyone got any real-world experience of using bike carbs on their daily? You hear about folk 'getting them on' but rarely read about the longer-term results. Do they run smoothly? Start Ok from cold? Stay in tune OK? any flat spots etc? Hows the fuel consumption? Id love to hear a few stories from folk who've persevered with them. I'm running r1 carbs on my 1600 8v nova with megajolt ignition - the carbs been on for a few'000 miles now and I've not had to touch them - have to make sure you have good hoseclips on the carbs/hose/manifold tho - and check them periodically as they can work loose. Mine never have but I've seen it happen. They start fine from cold - altho the self return choke can be annoying (clothes peg needed!) and they run as smooth as any other carbs I've driven. The megajolt made a big difference over the dizzy though - the engine is now smoother revving, better on emissions and pulls harder midrange. The carbs were not a nightmare to setup - far from it, fiddling with drilling the jets/needle positions with the afr gauge to get it right - as long as you understand how the jets/needles affect the fueling and you start low and work up you cant really go wrong. I don't get any hiccups/carb freeze/flat spots or bad behaviour from mine. Basically I can't fault them and the noise is nice with some conservative trumpets. Throttle response is excellent as well. Fuel consumption wise - well, ahem.... If you drive nicely then they are good, if you don't - they arent - Ive just worked out very roughly and id think I'm getting 20 mpg average - mix of steady and full bore. I don't use mine everyday normally only a wkend car but have driven it daily on occasion and its fine in traffic etc. Anything else I can add? |
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i have no imput into this thread apart from OOOOOF!  |
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Feb 17, 2010 16:33:23 GMT
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Very interesting reading guys.
I've been thinking about bike carbs and do actually own a set, but they're a bit tatty and pants so I'm looking for some more.
Is there any chance people in the know could start relating some choke sizes to the bikes they come off of though?
I'll be putting them on a 915cc imp engine eventually so whilst I totally understand what black8driver is saying about people worrying too much about sizes, I would like to stick to a relatively small size. I guess something from a 400cc bike would be ideal. But I was suprised to find that some are as large as 36mm on 400cc bikes.
A 400cc bike probably has a similar power output as to what I'd be aiming for... 50-60bhp, so I guess that means the carbs should work OK?
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Nathan
Club Retro Rides Member
Posts: 5,626
Club RR Member Number: 1
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Bike carbsNathan
@bgtmidget7476
Club Retro Rides Member 1
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Feb 17, 2010 17:26:13 GMT
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What about the ones of the GSXR V-twin?
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Feb 17, 2010 18:20:36 GMT
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Having spent the last few hours browsing t'interweb, I reckon i'm gonna go for the Kawaka ZXR400 carbs. 32mm CVKs  Should be ideal really I reckon! |
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Should be ideal really I reckon!