kurt
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| posted on 18/2/06 at 05:41 PM |
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R1 jetting for SVA?
I'm approaching the completion of my MK Indy with an R1 engine. I am currently having a high flow catalytic converter made and intend to get
the emmisions sorted for the SVA.
Does anyone know what jet sizes or carb setup etc. is required to get the emissions right with a catalytic converter fitted? The engine is a 2000
carburettor model with the Air Induction System and the exhaust is an MK item.
If anyone else needs a high flow catalytic converter which is about the size of a coke can fitted into the link pipe between the headers and the
silencer, then AAS Performance in Newcastle are the pepole. Let me know and I'll post info.
OK, I'm off to watch the Newcastle v Southampton match.
Cheers for now, Kurt
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smart51
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| posted on 18/2/06 at 06:08 PM |
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Emmissions for SVA is done at idle, albeit fast idle at 2500 RPM. You are not using the main jets or needle jets at this point because the throttle
is lessthan 1/4 open. You need to adjust the idle jets.
If for some reason you can't get it lean enough, and you are sure there are no air leaks etc, then you could lean off the needles by moving the
circlip up the needle. I didn't need to do this though.
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Lurch88
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| posted on 18/2/06 at 06:37 PM |
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Kurt
how much is your cat going to cost you?
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kurt
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| posted on 18/2/06 at 07:08 PM |
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£180 plus £30 to modify it to reduce the pipe size to fit headers and silencer. Apparently the high flow cat is designed for performance engines, AAS
has fitted one to a 500 bhp Corvette import which passed SVA and that was running rich so it should be OK for the R1 engine without restricting the
power. I know that sounds a lot, but I want to have my car set up with the cat and jetting sorted so MOTs should be ok now that they have this
computerised system where all the info about your car is stored for future reference. Also the SVA people up here are apparently strict so I am
trying to get it sorted properly rather than mess about with fish tank valves etc.
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Lurch88
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| posted on 19/2/06 at 11:58 AM |
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I think you could be going the right way fitting a permanent catalyser ,should at least cover your arse for future regulation changes! 
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