im just thinking ahead to this winter and was wondering if it would be possible to change the carbs on my 5jj R1 and go fuel injected on tb's from a newer R1!
1; what would i gain from doing this? eg. more power + sweeter running.
2;would it give me the option to tune it a bit easier?
3;would it be very expensive? eg cheaper to do this or sell the 5jj engine and replace withe a newer fuel injected motor?
any help would be grateful thanks.

waste of time, originally you wanted more power than a zx9 and you bought an R1, despite being told it would make little/no difference, and now you want more power again, you should've saved your money and bought the right car to start with a busa/zx12/zx14 engine fitted.

Changing for carbs to Tb's won't make hardly any difference, but will cost you a fair few quid, if you want more power out of your carb'd R1 why don't you remove all the engine internals and place them on a work bench, then take the casings from a busa and reassemble using all new busa parts, you should then have a car closer to what you originally wanted.

[Edited on 15/4/09 by Garage Clearout]

quote:

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Originally posted by Garage Clearout
waste of time, originally you wanted more power than a zx9 and you bought an R1, despite being told it would make little/no difference, and now you want more power again, you should've saved your money and bought the right car to start with a busa/zx12/zx14 engine fitted.

Changing for carbs to Tb's won't make hardly any difference, but will cost you a fair few quid, if you want more power out of your carb'd R1 why don't you remove all the engine internals and place them on a work bench, then take the casings from a busa and reassemble using all new busa parts, you should then have a car closer to what you originally wanted.

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i have moved from r1 carbs to r1 throttle bodies of the 2003 model, it will make your car run more efficiently once you get it set up properly, you will get better throttle responce and overall power, if you go down the MS route you are probably looking at a spend of around £500 - £700 depending on weather or not you need a new tank, etc, you will definately need ecu, tb's, return line to tank, hi pressure fuel pump and filter etc

hope this helps, u2u me is you want more details

Alex

garage clearout!
i have not even got my car on the road yet so i dont know if i want more power. i bought the car because it was a very good price and could not afford a busa!
we are not all made of money.
to everyone else thanks for your help. it was just a thought and was just wanting to find out from those who know better than myself.
u2u sent garage clearout!!!

[Edited on 15/4/09 by daniel mason]

also please look at the spec and price of my car on the pistonheads web site. if you still think a vortx rt+ in board powered by R1 with kliktronic is the wrong car then thats fine!

[Edited on 15/4/09 by daniel mason]

u2u here
Subject:
From: daniel mason
To: Garage Clearout
Sent: 15/4/09 at 09:11 PM
Message: get your facts right before you reply to my posts again please!
my car is not on the road yet and have never driven it.i just wanted to find out if it would be worth doing. and i have bought the right car for a very good price!
i do not know if i need more power but was checking out my options before i decided. This Mnr is the bestest car in the world, it's better than a caterham and it wins all the races it goes in. Even though i've not been in it yet i bet it's faster than any other kitcar out there.




So you've not even been out in the car and already you looking to upgrade it!

look back through all your posts since you joined, you must be power mad, all in quest to go faster and faster on the road, where we have 70mph max speed limit and in most places it's around 60mph

My dutton is more than capable up to 60mph on the uk roads

just to pull you up on the point about money, if the r1 is no faster than your zx9 then you've actually wasted your money as i'm sure you've invested more money in the blue car than you received for your old zx9

[Edited on 15/4/09 by Garage Clearout]

i like fast cars! is that a problem?
please dont post u2u messages on the thread page and dont reply to any of my future posts thanks.especially when you sabotage them! the stuff about the mnr i never even said! when did i say the mnr
was no faster than the st zx9?
[Edited on 15/4/09 by daniel mason]

[Edited on 15/4/09 by daniel mason]

Daniel,

Its not a good idea to do a TB conversion on the R1. The main reason is that it gains you very little and will cost you alot so the performance per £ is not a good return.

There is little difference between a carb'd R1 and an injected R1 (5JJ Vs 5PW) in terms of peak power. The main difference is that the midrange is smoother and more responsive in the 5PW, plus its a bit more economical - thats it. On track you wouldn't notice the difference.

If you want more power you either have to go the tuning route, or get a bigger more powerful engine. I suggest you use what you have, get used to it and understand how to get the best out of it (there is alot more to driving BECs than straight line acceleration). You can then decide what to do over the winter.

- Paul

(I've owned both 5JJ and 5PW motors, the later I have raced in RGB)

thanks paul. am sure the car will be good as it is,but i love messing around and doing stuff to the car

as paul says powerwise next to bugger all but driveabilty on a road car its a much nicer drive on injection for sure a lot smother

cheers

marc

quote:

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Originally posted by marc n
for sure a lot smother

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