bassett
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| posted on 2/3/10 at 01:19 PM |
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I can only comment on my R1 - 100% 
In the future i would like to upgrade the engine but only if it meets the criteria of more reliable, cost effective and noticeable gains, better
cruiser etc so maybe a ZX12/14 or older Busa but at the same time im not sure what similar engines other manufacturers do like Yamaha and Honda.
To really help you though try and get a past copy of one of the kit car mags(total kit car magazine?) with i think the Andy Bates run through of BEC
engines as i doubt most of us have seen it all or lived with more than 1 or 2 bec's.
[Edited on 2/3/10 by bassett]
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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TimC
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| posted on 2/3/10 at 01:34 PM |
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quote:
Originally posted by bassett
I can only comment on my R1 - 100%
In the future i would like to upgrade the engine but only if it meets the criteria of more reliable, cost effective and noticeable gains, better
cruiser etc so maybe a ZX12/14 or older Busa but at the same time im not sure what similar engines other manufacturers do like Yamaha and Honda.
To really help you though try and get a past copy of one of the kit car mags(total kit car magazine?) with i think the Andy Bates run through of BEC
engines as i doubt most of us have seen it all or lived with more than 1 or 2 bec's.
[Edited on 2/3/10 by bassett]
Related thread here
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franky
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| posted on 2/3/10 at 01:39 PM |
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quote:
Originally posted by smart51
quote:
Originally posted by franky
... 98 r1 ... It hasn't got a step in torque is so silky smooth
Mine wasn't. It suddenly came on at 5000 RPM. It was noticeable in all the lower gears. I designed an airbox that was resonant at 4800 RPM
which helped the engine breath easier just before the torque jump. It smoothed out delivery nicely. Even so, the output built up from about 4000 to
about 5000, from where it pulled really well.
The problem you had is that the r1 is designed to run with a EUXP valve in the exhaust system. When you fit a full system you have to re-jet on a
rolling road to smooth the lump out.
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evo.rocks
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| posted on 2/3/10 at 01:45 PM |
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whats so ridiculous?? it has beat an r1 everytime, it might have something to do with the rebore and the cylinder sizes are slightly bigger and the
engine is lighter
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cd.thomson
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| posted on 2/3/10 at 01:54 PM |
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quote:
Originally posted by evo.rocks
whats so ridiculous?? it has beat an r1 everytime, it might have something to do with the rebore and the cylinder sizes are slightly bigger and the
engine is lighter
lol, yes the cylinders being slightly bigger and the engine slightly lighter must be what gives you the edge.
Craig
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evo.rocks
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| posted on 2/3/10 at 02:00 PM |
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oh well. never the less - i still want a busa engine!! with a turbo!!!!!!!
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fesycresy
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| posted on 2/3/10 at 03:16 PM |
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You all know jack sh1t.........
Two turbo's on this baby and you can all kiss my fat ar$e 
.jpg)
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The sooner you fall behind, the more time you'll have to catch up.
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progers
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| posted on 2/3/10 at 03:27 PM |
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quote:
Originally posted by evo.rocks
whats so ridiculous?? it has beat an r1 everytime, it might have something to do with the rebore and the cylinder sizes are slightly bigger and the
engine is lighter
Its ridiculous because it has been proven many times over that a ZX9 engine is not competitive against R1's (and even blades) in various forms
of motorsport including sidecars and bike engined race series.
If your Zx9 beats an R1 its because the R1 is badly setup/driven/poor gearing etc or you have a tuned engine which is not comparing like with like.
In general there are so many poor, misinformed bits of information in this thread its about as useful to the original poster as a chocolate
fireguard!
Sigh....
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FFTS
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| posted on 2/3/10 at 06:36 PM |
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What's a chocolate fire guard for??? If they are any use can someone get me one cheap 
Well what a lively little thread this is turning into.
OK lets try another question!
If I were going to upgrade my engine (ZX9R C1) or change the car to another Bec with a more powerful engine (standard) What would be the next
worthwhile step up between limited budget and the step being worth the upgrade in noticeable performance?
For instance swapping it for a Blade then no. For an R1 4XV? 5VY?
Ebay Linky
Not about too do it yet but gathering knowledge for when I have some more cash and the urge for more grunt.
[Edited on 2/3/10 by FFTS]
Chris.
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franky
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| posted on 2/3/10 at 06:47 PM |
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If you've already got a zx9 lump then an early r1 wouldn't be worth the cost/hassle of the change. Go for a zx10r as that's got
30bhp over your motor and an r1.
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FFTS
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| posted on 2/3/10 at 06:55 PM |
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quote:
Originally posted by franky
If you've already got a zx9 lump then an early r1 wouldn't be worth the cost/hassle of the change. Go for a zx10r as that's got
30bhp over your motor and an r1.
Now that's constructive, thanks
Any more opinions? How much any suggestions should cost to buy the standard engine and bits of a given age etc.
Chris.
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twybrow
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| posted on 2/3/10 at 07:01 PM |
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If your lump uses carbs, then I would be looking at a DIY turbo upgrade. Those engines are cheap enough you can swap it for another if the first goes
pop. Carbs are much easier to DIY turbo than EFI due to the limited electronics needed.
If you want to stick with N/A, then a ZX10/ZX12 would be a good choice, as you may be able to adapt some of your existing parts (eg zorst).
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smart51
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| posted on 2/3/10 at 07:40 PM |
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quote:
Originally posted by franky
If you've already got a zx9 lump then an early r1 wouldn't be worth the cost/hassle of the change. Go for a zx10r as that's got
30bhp over your motor and an r1.
Personally, I wouldn't say that 30 BHP was enough. 20% more is a bit Ho-Hum in my opinion. I'd stick with what I had until it went pop
and save up for a bigger motor. Busas or ZX14s are the current moteur de jour so are pricey but myself, I'd be disappointed with any
smaller increase in power.
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TimC
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| posted on 2/3/10 at 07:40 PM |
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This is my last post on this thread because it's a total shocker but:
quote:
Originally posted by franky
If you've already got a zx9 lump then an early r1 wouldn't be worth the cost/hassle of the change. Go for a zx10r as that's got
30bhp over your motor and an r1.
- Assuming the OP uses a Sierra or Escort diff/axle (it's a ST chassis after all), if he wants to use a ZX-10R there is a very strong chance
he'll at least need to fork-out for a 3.14 Sierra diff and if he's live-axle he's f**cked.
- Secondly, there is absolutely no chance that a ZX-10R will deliver 30bhp more in a car than even a well set-up 5JJ. I promise you - and I'm
using a 10R
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bassett
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| posted on 2/3/10 at 07:41 PM |
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Tim C - wow was that over 2 years ago! I still think it was a good article for an all round view and to understand what is available.
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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ReMan
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| posted on 2/3/10 at 09:16 PM |
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I'm still confused about the original question.
Why dont you just ask for a top 10 bang per buck without the %ages
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maximill666
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| posted on 2/3/10 at 09:34 PM |
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Turbocharge what you already have, you know it makes sense
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FFTS
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| posted on 2/3/10 at 09:35 PM |
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quote:
Originally posted by ReMan
I'm still confused about the original question.
Why dont you just ask for a top 10 bang per buck without the %ages
Because I was interested in trying to get an idea HOW MUCH better one was over the last. If one engine was at number 6 was would it be worth upgrading
to 5 or would a jump to number 4/3... simple really if you think about it. Quote from my original thread "so I can get an idea of how
much of a step up from one to the next is try to put a % better than the last "
Hope this helps you with your confusion!
[Edited on 2/3/10 by FFTS]
Chris.
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FFTS
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| posted on 2/3/10 at 09:36 PM |
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quote:
Originally posted by maximill666
Turbocharge what you already have, you know it makes sense
I've seen yours for the first time on the other thread and have to say that its just engineering porn and I love it.. Well done you!!
Chris.
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bassett
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| posted on 2/3/10 at 11:12 PM |
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what you need is for users to rate their engines out of 10 on the main factors by cost, original power, mods required, ease of installation,
reliability and how happy you are with it then i think you could compare them as ive only ever been in mine and im sure the majority are in the same
boat.
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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imp paul
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| posted on 3/3/10 at 09:50 AM |
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i will just stick with the zx12r
[Edited on 3/3/10 by imp paul][img]http://locostbuilders.co.uk/upload/a1104715-small [800x600].jpg[/img]
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Hellfire
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| posted on 3/3/10 at 07:53 PM |
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quote:
Originally posted by FFTS
If I were going to upgrade my engine (ZX9R C1) or change the car to another Bec with a more powerful engine (standard) What would be the next
worthwhile step up between limited budget and the step being worth the upgrade in noticeable performance?
Personally, I wouldn't even bother considering it unless your engine (or gearbox) goes bang and needs replacing. I'd spend the money
making your car lighter and getting it set up properly. The ST chassis and ZX9R is a great combination if you get it to work correctly. 
Phil
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FFTS
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| posted on 3/3/10 at 07:59 PM |
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quote:
Originally posted by Hellfire
quote:
Originally posted by FFTS
If I were going to upgrade my engine (ZX9R C1) or change the car to another Bec with a more powerful engine (standard) What would be the next
worthwhile step up between limited budget and the step being worth the upgrade in noticeable performance?
Personally, I wouldn't even bother considering it unless your engine (or gearbox) goes bang and needs replacing. I'd spend the money
making your car lighter and getting it set up properly. The ST chassis and ZX9R is a great combination if you get it to work correctly.
Phil
Thanks for that and I value your oppinion. Don't know if you seem very in the know or I simply like your user name .
Over the last few days I've noticed some clutch slip in 5th/6th when driving hard and comes in at around 9-10'000 rpm.
So Mr HELLFIRE??????
Chris.
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Hellfire
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| posted on 4/3/10 at 10:24 PM |
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Have your clutch springs been uprated?
Phil
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Steve Hignett
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| posted on 4/3/10 at 11:19 PM |
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Apart from Hellfire's blunt point about not fixing it 'til it's broke, and then the people that are trying their best to shoot down
the bullshit that some people on this forum insist on posting;- I believe that the only decent examples of suggestions for you (O.P.) are the two re
the turbocharging of your existing engine...
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