smart51
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| posted on 31/1/05 at 12:44 PM |
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bike engines with cat
I have prety much decided to go down the BEC route but am not sure which engine to go for, either a pre '95 no cat required engine or a
comes-with-cat-and-lambda-sensor-already type.
Which bike engines come with lambda sensor and cat as fitted on the bike (just fit bigger cat and go)
which engines are 10 years old already and still good for a kit car and don't need a cat.
In case it helps, I'm thinking of building an MK indy.
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ChrisGamlin
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| posted on 31/1/05 at 01:31 PM |
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I think you'll find that hardly any bikes come with a cat, and those that do can meet bike emission regs but struggle to meet car emission regs
for SVA. The better and more proven route is to hire / buy a proper cat system from one of the kit car suppliers and use that.
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Jon Ison
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| posted on 31/1/05 at 03:24 PM |
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if its an Mk yr building they have plenty of experience getting BEC's thru emissions and have all the gear to do it as Chris suggested.
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dern
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| posted on 31/1/05 at 04:21 PM |
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My current plan is to install my 2003 FI R1 engine in the car with a stainless manifold from MNR which will, presumably, end with a single outlet
pointing backwards.
Then initially I'll attach the smallest car cat I can find at the local scrappers to the outlet and then fabricate a link to a bike silencer.
This won't look great but will do the job (I think).
Then replace it with a stainless link pipe to the silencer after the big day.
Does this sound feasable?
Where does the lambda sensor attach normally, is to the cat or before or after the car?
Regards,
Mark
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smart51
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| posted on 31/1/05 at 06:57 PM |
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Money no object, I would use an R1 injection and a car cat. This aught to pass SVA. I would probably leave it that way as welll. R1 injections are
EXPENSIVE.
what I want to know is "what other bike engines are catalysed." and also "which pre '95 engines are any good for kit
cars."
anyone?
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dern
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| posted on 31/1/05 at 07:21 PM |
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quote:
Originally posted by smart51
Money no object, I would use an R1 injection and a car cat. This aught to pass SVA. I would probably leave it that way as welll. R1 injections are
EXPENSIVE.
what I want to know is "what other bike engines are catalysed." and also "which pre '95 engines are any good for kit
cars."
Not that many bikes have cats and, as has already been said, the ones that do probably don't have a cat sufficient in size
to ensure you bec passes sva from what I've heard.
So you either use a pre-95 engine and don't put a car (or hired cat) on or use a post 95 and buy/hire a cat.
Bike engines are extremely well put together in the main and are capable for many more miles than you typically find on them. So, even if you find a
pre-95 bike engine with 50k miles on it then as long as it's been serviced correctly it should be good for years of use yet. I have read of a
blade (pre-FI) that had done 250k miles without any major work.
Examples of pre-95 engines are FZR1000, CBR1000 and the blade is pretty popular too.
Mark
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dern
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| posted on 31/1/05 at 07:22 PM |
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quote:
Originally posted by snoopy
 smallest car cat would be off the new mini and lambda senser is positioned in end of the downpipe before the cat
Cheers, I think I'm
unlikely to find one in the local scrappers though 
Mark
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dern
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| posted on 31/1/05 at 09:57 PM |
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quote:
Originally posted by snoopy
maybe not scrapyard prices but this seemed reasonable to me
http://cgi.ebay.co.uk/ws/eBay
ISAPI.dll?ViewItem&category=10374&item=4522182012&rd=1&ssPageName=WDVW
Good find. I think if I was going to keep it on
then it would be a good deal but I'm probably going to go for something off an old fiesta. It'll look shite, granted, but it'll fall
off as soon as I get home.
Cheer,
Mark
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chunkielad
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| posted on 31/1/05 at 10:32 PM |
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Won't it then fail the MOT? I'm sure the newest MOT regs call for emissions tests or is that just Diesels still?
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dern
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| posted on 1/2/05 at 09:13 AM |
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quote:
Originally posted by chunkielad
Won't it then fail the MOT? I'm sure the newest MOT regs call for emissions tests or is that just Diesels still?
Yes it would but
my understanding is that the SVA exempts you from an MOT for 3 years and I'll just keep the cat system in the loft until it's required.
BTW, I'm no expert, this is simply what my approach will be until someone tells me it's wrong
Regards,
Mark
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