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Yamaha R1 carbed A series Mini


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#16 sa_mini

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Posted 09 January 2007 - 07:02 AM

I am seriously impressed bro....
Most people simply do a engine swap or simply throw a turbo on.
But you have what i call "brains" man to undertake an experiment like this takes time and patience.Well done i wish more people had this type of ingenuity.
Post more pics once done PLEASE.

#17 Udo

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Posted 09 January 2007 - 08:47 AM

Cheers but I wouldn't go as far as saying that! Its more a matter of common sense engineering

Yes its going to be a bit of an experiment but it isn't costing that much, well I dont think so but I'm quite a few years past student days, and if all go's wrong I sell the carbs back on.

I know a lot of people are using all four carbs on the likes of kit cars so I saw no reason why this shouldn't work and give me better fuel economy than the weber due to the SU type design - which is main reason for the change.

That and I always seem to want to tinker with something and SWMBO says I can't have another car so have to just alter and improve the one I have

Will take some more photos when fitting and when on rolling road, can't think of anything else to show you at the minute, roll on the 20th

Cheers

Edited by Udo, 09 January 2007 - 08:48 AM.


#18 miniboo

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Posted 09 January 2007 - 09:20 AM

SWMBO?

#19 Udo

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Posted 09 January 2007 - 09:26 AM

She Who Must Be Obeyed!

#20 miniboo

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Posted 09 January 2007 - 09:27 AM

lol knew is was something like thast just couldnt figure it out!!

#21 JA1987

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Posted 09 January 2007 - 11:52 AM

Cant wait to see the difference with your bike carbs on, will look realy smart in an a series engine
bay. What power was the engine putting out before?

#22 Udo

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Posted 09 January 2007 - 02:48 PM

Currently resides at 84 at the wheels, hoping for a bit more but will have to wait and see! Fingers crossed but if I just get the reduced fuel consumption I'll be a happy chappy

#23 JetBLICK

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Posted 09 January 2007 - 03:16 PM

Nice one bud, i love things like this, something different and experimental.

I know you've already answered a similar comment above, and i dont know about the carbs to be honest - but - surely it would pay off to try and space the carbs so that the are a straight feed into the inlets - like on traditional twin SU's or split webers. If it works well it would carry benifits from all the best bits of different carbs. Mainly the performance benifits of a weber (if not better) with the straight flow you get from having twin SU's or expensive split webers - all for a much more affordable price. ;)

good luck anyway, hope all the work pays off at the RR :)

#24 Udo

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Posted 10 January 2007 - 09:17 AM

Trial fitted the carbs last night all looking good, Fuel, throttle cable and choke cable all smooth runs etc. Its very close to the scuttle and I will need to stick something to the underside of the bonnet to stop the cable rubbing the paint off but all seems good. Except I dropped one of the manifold washers and cant find it down the back of the engine!

Just on a side note I didnt realise that a weber and inlet weighed so much! The bike ones are so much lighter


JetBlick - I may still space the carbs out, it was a thought in the first instance but the work involved will be a lot more with making the linkages, maybe next winter if I get bored!

refering back to previous Q about heat you can see the Bonnet vents in the last photo, and I also have a Turbo box fitted so there is a lot more air around the manifold (got turbo box welded in when I rebuilt car just incase I ever go down that route)

Attached Files


Edited by Udo, 10 January 2007 - 09:24 AM.


#25 Ollie180

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Posted 10 January 2007 - 02:16 PM

That looks soooo cool lol:w00t: cant wait to see what difference they make

#26 Baldspeed Racing

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Posted 10 January 2007 - 02:37 PM

they look well nice Im supprissed no one else has really done them yet.

#27 JA1987

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Posted 10 January 2007 - 02:47 PM

I knew they would look good in an A series engine bay. Have you had the engine running with the bike carbs on?

#28 Udo

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Posted 10 January 2007 - 02:52 PM

I'm sure somebody will be running bike carbs on a mini, can't believe I'm the first! (Although they ain't running yet!)

Really can't wait till the 20th, seems to have taken quite a while to get this far and the last week and a bit is really dragging.

As soon as the carbs are on thou I will then also have Megajolt to play with.

Not had them running as want to wait to make sure that they aint running rich/lean and so bugger the engine up on the way to the RR. Seeingas they are off a bike the settings could be all over the place and may even need some jets blocking up

Edited by Udo, 10 January 2007 - 03:15 PM.


#29 JA1987

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Posted 10 January 2007 - 03:10 PM

How difficult was the megajolt to wire in?

#30 Udo

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Posted 10 January 2007 - 03:16 PM

Well I've found it very easy to but I dont mind electrics, not running on the car yet but all works on the bench so not expecting any problems.

Need to wire in the TPS from the bike carbs and do final fit but all on separate loom which just needs power and earth sorting out

Edited by Udo, 10 January 2007 - 03:19 PM.





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