pork
Posted a lot
Posts: 1,656
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Jul 24, 2012 15:51:05 GMT
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I've tried search, but says its not working  Anyone got any links to some builds that have turbo'd bike carbs? I remember seeing a mini with a swift gti engine in that was doing this to it, Or any other useful reads/how to's, do' and donts? ( I've read that uncle bobs turbo bike thingamajig a few times now) |
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Jul 24, 2012 15:57:11 GMT
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try using google, so put in retrorides, turbo bike carbs  |
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Jul 24, 2012 16:00:14 GMT
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Last Edit: Jul 24, 2012 16:00:49 GMT by dbizzle
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pork
Posted a lot
Posts: 1,656
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Jul 24, 2012 16:10:24 GMT
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try using google, so put in retrorides, turbo bike carbs Aaaaaaa, that works just fine Sent from my iPad using ProBoards app |
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pork
Posted a lot
Posts: 1,656
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Jul 24, 2012 16:10:42 GMT
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I am  Sent from my iPad using ProBoards app |
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pork
Posted a lot
Posts: 1,656
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Jul 25, 2012 15:34:45 GMT
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So, from what I understand, I need, bike carbs with plenum and pilot tube incorporated. Pilot tube is fed to the vents on the carb floats. Fuelling wise, I'm gunna need fuel pump which is capable of higher psi than my turbo, return feed to the tank, and a boost referenced fuel pressure regulator.
How does the boost referenced fpr work exactly? Would it need a feed from the turbo?
Sent from my iPad using ProBoards app
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pork
Posted a lot
Posts: 1,656
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Anyone help?
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Jul 27, 2012 19:28:07 GMT
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Sorry, only just seen this one! The Boost referenced FPR will require a feed from a boost pipe or plenum, what this will do is keep your stock fuel pressure, say 2psi for carbs, then add the boost pressure on top. This ensures that the carbs will always be seeing stock fuel pressure, if you did not do this then the fuel would be pushed back out of the carbs every time the turbo spooled up Do not forget the restrictor rings in the inlets, this allows a rising air fuel ratio to be achieved on boost J |
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Mr S
Posted a lot
10-4 Good buddy.
Posts: 2,654
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Jul 27, 2012 19:33:25 GMT
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Suzuki GSXR1000 K2
BMW R1150GS
BMW K1200RS
Chevy K5 Blazer
Chevy Suburban LT
Jaguar XKR
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pork
Posted a lot
Posts: 1,656
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Jul 27, 2012 22:20:23 GMT
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Cheers people, got more of a clue now of where to go
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pork
Posted a lot
Posts: 1,656
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Sorry, only just seen this one! Do not forget the restrictor rings in the inlets, this allows a rising air fuel ratio to be achieved on boost J Could you elaborate a bit more for me please? Thanks |
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pork
Posted a lot
Posts: 1,656
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Sorry, only just seen this one! Do not forget the restrictor rings in the inlets, this allows a rising air fuel ratio to be achieved on boost J Could you elaborate a bit more for me please? Thanks |
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Turbo bike carbssowen
@sowen
Club Retro Rides Member 24
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Sorry, only just seen this one! Do not forget the restrictor rings in the inlets, this allows a rising air fuel ratio to be achieved on boost J Could you elaborate a bit more for me please? Thanks I think he's referring to an alternative to the pitot tube method of supplying boost pressure to the float chambers. Mounting the pitot tube in the centre of the intake should give a marginally higher pressure than having the float chambers vent on the walls of the plenum. If a pitot tube is not used, there must be a method to ensure that the float chambers recieve a slightly higher pressure than what the carb venturi see's, which would usually be by a restriction to the intake. MG Metro turbos had a plenum with a build in restrictor to take care of the venturi/ float chamber pressure issues. I hope that makes sense, I'm building a turbo blow through carb setup right now and I've got a pitot tube stuck in the centre of the plenum intake to feed the SU carb float chambers. |
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pork
Posted a lot
Posts: 1,656
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Nice one, do you have a build thread goin on with pics? A picture says a 1000 words |
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Jul 28, 2012 13:56:57 GMT
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Ahh, my mistake for not reading the first post! Rookie error! Yeah, pitot and resrictor ring do the same job in different ways |
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pork
Posted a lot
Posts: 1,656
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Jul 28, 2012 17:23:13 GMT
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Cool, well looks like I'm gunna attempt this, cars gunna be another k10 micra, 1.2, had bike carbs fitted last time, so wanna take things further.
The mrs is buying the car for me for my birthday as I had to sell the last one to pay vet bills (stops me destroying the house with DIY boredom )
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pork
Posted a lot
Posts: 1,656
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Jul 28, 2012 17:24:29 GMT
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Already ordered bike carbs and a spare heads to mock things up with till the car is bought
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pork
Posted a lot
Posts: 1,656
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Jul 31, 2012 19:22:50 GMT
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How would I find information about what jet size to use? Or is it trial and error
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pork
Posted a lot
Posts: 1,656
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Aug 10, 2012 15:19:23 GMT
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Right this is where I'm at so far, your thoughts, should it be more 'rounded' Attachments:
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pork
Posted a lot
Posts: 1,656
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Aug 10, 2012 15:43:15 GMT
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Someone on another forum mentioned that I may have a problem with fuelling if using variable Venturi carbs but wasn't to sure.
Can anyone elaborate any more on this?
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