IVA emissions and 97/98 Fireblade engine
Discussion
Hi
After some clarification on the rules for the above combination.
I have a 1997 Fireblade 919cc engine and am pretty sure I'll need a cat for the emissions, even though the bike didn't have one in the first place.
I assume you don't need a lambda as the bike never had one?
Is it easy / possible / a nightmare to get the engine / carbs set-up for IVA?
Cheers
Steve
After some clarification on the rules for the above combination.
I have a 1997 Fireblade 919cc engine and am pretty sure I'll need a cat for the emissions, even though the bike didn't have one in the first place.
I assume you don't need a lambda as the bike never had one?
Is it easy / possible / a nightmare to get the engine / carbs set-up for IVA?
Cheers
Steve
Yes, it will have to meet the full bets test. That will require a cat fitting.
The limits are...
Idle test, CO <4.5%.
Fast idle (2500-3000rpm), CO<0.3%, HC<200ppm, lambda between 0.97-1.03.
As you're on carbs (therefore an open loop system) it'll be difficult to balance the mixture.
A lambda sensor isn't required. They're used on a closed loop/injection system where the ECU uses it to read the mixture and vary the fueling. However, having one and a wideband AFR sensor might help you set it up.
The limits are...
Idle test, CO <4.5%.
Fast idle (2500-3000rpm), CO<0.3%, HC<200ppm, lambda between 0.97-1.03.
As you're on carbs (therefore an open loop system) it'll be difficult to balance the mixture.
A lambda sensor isn't required. They're used on a closed loop/injection system where the ECU uses it to read the mixture and vary the fueling. However, having one and a wideband AFR sensor might help you set it up.
AdiT said:
Yes, it will have to meet the full bets test. That will require a cat fitting.
The limits are...
Idle test, CO <4.5%.
Fast idle (2500-3000rpm), CO<0.3%, HC<200ppm, lambda between 0.97-1.03.
As you're on carbs (therefore an open loop system) it'll be difficult to balance the mixture.
A lambda sensor isn't required. They're used on a closed loop/injection system where the ECU uses it to read the mixture and vary the fueling. However, having one and a wideband AFR sensor might help you set it up.
Think you will find the idle figure should be CO <0.5%The limits are...
Idle test, CO <4.5%.
Fast idle (2500-3000rpm), CO<0.3%, HC<200ppm, lambda between 0.97-1.03.
As you're on carbs (therefore an open loop system) it'll be difficult to balance the mixture.
A lambda sensor isn't required. They're used on a closed loop/injection system where the ECU uses it to read the mixture and vary the fueling. However, having one and a wideband AFR sensor might help you set it up.
Steve
Where are you in the build?
We have put bike engines through IVA it just requires careful tuning.
Fortunately bike carbs are quite stable so once they are set they seem to stay that way unlike some aftermarket car carbs.
Where in Hants are you? We are in Fareham and have the gas testing gear so may be able to help when you get to that stage.
Steve
We have put bike engines through IVA it just requires careful tuning.
Fortunately bike carbs are quite stable so once they are set they seem to stay that way unlike some aftermarket car carbs.
Where in Hants are you? We are in Fareham and have the gas testing gear so may be able to help when you get to that stage.
Steve
Hi Steve
The car is a reasonable way on. Engine is running etc.
It's my brothers project that I'm taking over as he simply hasn't the time anymore to complete (or the inclination now I fear).
I have a feeling I may be popping down to your place for a few bits and pieces doing / finishing off so this may very well be one of them.
Looks like a CAT may be in order as well. Any recommendations for one?
Once I get the car down next month, I'll pop in to your place and have a chat?
I'm in Whiteley by the way so not far away at all.
Cheers
Steve
The car is a reasonable way on. Engine is running etc.
It's my brothers project that I'm taking over as he simply hasn't the time anymore to complete (or the inclination now I fear).
I have a feeling I may be popping down to your place for a few bits and pieces doing / finishing off so this may very well be one of them.
Looks like a CAT may be in order as well. Any recommendations for one?
Once I get the car down next month, I'll pop in to your place and have a chat?
I'm in Whiteley by the way so not far away at all.
Cheers
Steve
One thing to start researching is either get the V5 for the engine or some proof of the engine age. For IVA it is down to you to prove to/convince the inspector the age of the engine. If you can't then he will have to test it to the latest spec (0.2% CO <200ppm HC & 0.3% at idle) which will be a whole bunch more difficult to achieve on carbs.
Your proof may be a letter from the engine manufacturer or perhaps a publication like Haynes listing the engine number groups and when they were in production.
https://en.wikipedia.org/wiki/Honda_CBR900RR
Is close but probably not as valid as a publication.
Steve
Your proof may be a letter from the engine manufacturer or perhaps a publication like Haynes listing the engine number groups and when they were in production.
https://en.wikipedia.org/wiki/Honda_CBR900RR
Is close but probably not as valid as a publication.
Steve
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