twin t/b

gonna try a twin throttle body setup on my k11, a cut-n-shut manifold and some rover t/b,s probably

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thats cool mate! how did you make it? i gather its a normal micra inlet manifold from just after the injectors and you've welded on some flat plate...

yeh, that about sums it up, had a plate welded on then made a 4 into 2 block
might go for quads one day, but for now its just to give the lpg a bit more throttle response and torque hopefully

got me rover t/b,s today, 48mm, lightweight plastic with the same size tps spindle
its not the prettiest of manifolds, but its got nice and short/direct inlet tracts,

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looking nice mate

thanks sarge3uk

did a trial fit today, to check the clearance for the airbox
with this setup, hopefully i will be able to beat my 17.1 sec runs at the dragstrip last week

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that's pretty cool. i like it! clean up your engine bay thou :(

thanks turbo

if you think the engine bay looks riffy, i best not you show the cabin !
i think thee and me have different mindset,s..... my car is purely functional

frank

and how does it go?? much better?

there,s still a fair bit of tinkering to do (airbox, twin cable, maf etc)
i,ll post any progress next

you've got bigger injectors? you'll need them. Novel concept thou.... I'd only use one throttle wire with a threaded rod linkage to no.2. Oh, a pump bottle with engine degreaser will do wonders for engine bay cleaniness. My car is often a mess due to work in progress but I feel much better about myself and the car with a quick wash and engine bay spray (then I do the car too! :)......)

they,re primera injectors, and the lambda volt readings are very good atm (with the piper cams)
i went for a 2 into 1 cable setup, with very fine adjustment

cool, looks like your all over it... be interesting to see how it goes!

looking amazing even better fitted

cheers peeps

tried it on gas (no tps or maf fitted yet) but did,nt realise the tank was all but empty (i took the 45ltr tank out and put the 25ltr one back in last week, and the gauge is unfamiliar),so power was crap, but it had an awesome intake roar (burbled like a v8 or scooby)
so i got a ga16 t/b to cut the top 1/2 off and use the maf, but tried it on the stock manifold first, no noticable power gain on petrol (maybe more at very high revs) but a very noticable gain when on gas !! serendipity eh

sorry guys, abandoned project ! (unless an msc member wants it)
i cant see me using it coz i,m pretty gobsmacked at the performance of the ga16 t/b when on gas.
i had to fit a restrictor to the k11 one so as to create enough vacuum to draw the gas out at the right a/f ratio but tried a different setup on the ga one (an oval orifice that gives airflow along the full length of the gas nozzle, a venturi effect rather than vacuum) and it gives "at least" as much power as when on petrol ??
so we might get a 16 second run on lpg (the scrutineers passed it last time !)

hey frank2, any more progress on this looks good.

sportsclassic

i,m afraid its been shelved, i had reached the limits of the 1.0 clutch on petrol, and now also on gas, so without the hassle and extra weight of fitting a 1.3 g/box,shafts,mounts etc my only option is to shed some more weight
ie ally alternator bracket, perspex rear 1/4,s soundeadener removal (airchiseled on a frosty morning), junk the sunroof for perspex and solar panel and goodbye petrol tank

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looks good frank!

wildly off topic, but a final update.
the solar pv panel is in but till we see some sun i have to run the alternator with a big pulley (1/2 speed) (for assistance)

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frank 2 you are the man some nice work manship there

hey, was just wondering if you measured the differance between the glass and acyrlic windows?

as in weight ?, iirc, about 1/3 the weight, its in my blog i think.
i,ll post a link if the poxy server on msc gets sorted !

Hi Frank, done anything else on your micra??

hi sportsclassic

tinkerin,s been a bit quiet lately tbh, previously i,ve smoothed and coded the black bumpers etc, and skanked a kart tacho from work, and had a proper inlet cam done, to relace the so called "ultimate" piper one

tacho

autosprint cam with the old mini 544 profile + 1.0 cam with 1 lobe reprofiled

Rear bar looks good

Frank, I think I might just have found a kindred micra-driving spirit. Currently my car is stubbornly standard (bar some bigger brakes) but my long term aim is all about the oily bits and nothing to do with the looks. I like the "functional" ethos. I also like the idea of a battered old battlewagon that will still convincingly see off the average bodykitted Saxo. What have you got where the ECU used to sit?

red menace

aye, function over form eh, it,s a hoot to drive with a loose rear end ! (with no a/r/b,s and some negative camber on the front).
the ecu has,nt been moved btw

And I take it that when you say that the reading on the lambda sensor is good, that gives confidence that it's not leaning out. When your blog's sorted, I'll have a long hard look at your setup. I'd like to go for a more capable nat-asp setup (starting with a better exhaust manifold) but didn't think the stock ECU would cope.

Forgive me if this is a daft question - in principle, if I up the airflow and the fuel flow in the same proportions (i.e. better breathing and bigger injectors) then the basic ECU might be able to deal with it?

red menace

when it was dyno,d with the 1.6 t/b and injector,s, they said that it was overfueling at low rpm and underfueling at high rpm, on wot.
so i,ve got stock injector,s and a 5th audi injector in the t/b, triggered by a button on the gear knob atm

thats a pretty good weight saving, and im sure that the acyrlic costs next to nothing, was it a special type you used or jsut some standard stuff?

xsoarerx

here,s that link, with some better pic,s of the spec.s (650g,s compared to nearly 2kg, going by my misses,s kitchen scales)
http://www.micra.org.uk/showthread.php?t=22225&page=2