kastrato
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| posted on 13/10/07 at 07:42 PM |
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Fireblade modifications?
How can I make my mk indy blade (using 1995 RRS cbr 900 RR enfine) go faster?
I am talking about engine modification only which doesn't cost a fortune like turbo for example.
Maybe if I rejet the carbs add a sausage filter and an exhaust can will help it a little?
If yes what the next stage of modifications on that engine?
MK INDY fireblade
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worX
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| posted on 13/10/07 at 07:52 PM |
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Hi Kastrato,
There are several things that can be done.
Rejetting, sausage filter and better flowing exhaust. And rebore to a 945 engine wouldn't cost a fortune!
You are probably best speaking to Andy Bates, there are plenty of people around that know quite a bit about the Blade engine as loads have used it,
but none more so than him - he really does know his stuff on them!
He can be contacted on (AB Performance 01449 73 66 33)
cheers,
Steve
[Edited on 13/10/07 by worX]
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craig_007
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| posted on 13/10/07 at 08:14 PM |
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I heard in conversation about a modified cdi unit ???
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stuart_g
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| posted on 13/10/07 at 08:25 PM |
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change diff ratio?
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worX
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| posted on 13/10/07 at 08:46 PM |
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You can change the CDI for a CBR600 (can't remember what year), it is a direct replacement, apart from the fact that the 600 would rev higher,
but in a road car (in spite I've hit the limiter several times in mine) I'm not to sure I'd like to over-rev it by a great deal -
each to their own I guess!!!
Steve
quote:
Originally posted by craig_007
I heard in conversation about a modified cdi unit ???
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kastrato
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| posted on 13/10/07 at 08:46 PM |
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actually my car is in Greece so Andy isn't really the guy next door to me.
I just want to know what can be done and try to do them in greece.
I will change the diff ration soon but after that my chassis set up will be over and I will be ready for taking care of the engine.
When you said free flow exhaust you mean the end can really aren't you. Because the manifold is a bit standard on lotus seven inspared kit
cars.
I use the MK one whitch came with the kit and I suppoce that it is quiet free flow.
MK INDY fireblade
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mad-butcher
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| posted on 13/10/07 at 10:34 PM |
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I wouldn't change anything apart from dif, just enjoy the car the way it is, we've done loads of track days with a standard 95 blade been
on the limiter nearly all the time, start changing things and you will only end up with reliability problems, Chassis set-up and a good set of tyres
can be worth more than engine work, it's no good theoretically being able to go round a corner 10mph faster if the car is badly set-up and
won't go round it
just my opinion
tony
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Hellfire
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| posted on 14/10/07 at 08:58 AM |
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I tend to agree with Tony, you'll only end up with reliability issues if you modify the engine too much. I also don't think that a foam
filter, re-jet and race can is going to give you much more power than you already have, besides which, a foam filter is only gonna make your car
louder (through induction) and you might struggle to get on some tracks if the restrictions in Greece are similar to those in the UK.
Make the best use of what you've got. Go for a race can, keep the standard airbox, fit a free flowing filter such as K&N and then get it
tuned on a rolling road. Get your suspension geometry professionally set-up and enjoy what you've got. If it's still not got enough power
for you, then consider replacing the engine with a more powerful unit.
Phil
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kastrato
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| posted on 14/10/07 at 12:36 PM |
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I agree with Tony aswell. That is what I am doing at the moment. I changed my wheels from 17' to 13'. I changed my tyres from road yokos
to michelin slicks.
I changed the steering rack to a 2.4 turns one and next turn is to change the diff. I have a oem sierra now must be 3.92 I am thinking for something
shorter like 4.14.
We dont have noise limits in Greece (on the race tracks at least ) so no problem about fitting a sausage filter. the problem is that my car is the
only bike engine car in the coutry and there is nobody which actually can dynoroad it.
So even if I fit a free flow exhaust on and a filter that wouldn't work properly cause nobody can set it up.
Now about sunspension set up I will try to set it up my self for the same reason (nobody knows what a seven inspired car means, it is the only MK in
the coutry and there is one more caterham and one westfield as well but those are already set up by their factory)
MK INDY fireblade
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kastrato
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| posted on 14/10/07 at 12:40 PM |
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reliability it is an importand issue.
I need the car to be reliable cause the heat in Greece is tremendus!!
MK INDY fireblade
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kastrato
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| posted on 14/10/07 at 12:41 PM |
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mad-butcher what diff do you use?
I like to listen to other peoples ideas too.
MK INDY fireblade
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Dangle_kt
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| posted on 14/10/07 at 01:23 PM |
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if you cant make the engine more powerful (well at least not easily)
Then why not look at the other side of the power:weight ratio and try to remove some KG's?
I dont know your build, but it might be another avenue to consider.
also about the set up - are you sure no one could bench test the engine for you? remove it out the car and do it that way? might be worth asking round
a few bike shops or even better some motorbike race teams.
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kastrato
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| posted on 14/10/07 at 01:35 PM |
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My car is very light I dont think I can reduce anymore.
I dont say that it is not fast enough but it seems that it is slower than my friends caterham (160bhp 1800 rover engine)
and my other friends 1800 zetec westfield. Maybe it is my fault though because maybe I am a slower driver but I believe that this is happening mosly
because of my set up. But few bhp more never hurt anyone...
MK INDY fireblade
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