mad-max

rb30x ... if its an rb30e you wish to run with carbs heres a quick guide.... just try and find an original vac advance dizzy through nissan or something thats what im using but i was lucky enuff to get it with the manifold..... they are very hard to find parts for but they do use the same cap and rotor (cut 5mm off the bottom of the rotor so its usable) you could import a dizzy from south africa, the sgli r31 skyline from south africa uses the rb30s.... they also come out in rb24s in the philipino a31 cefiro, Nissan GQ Patrol and ford mavericks are the same and use an rb30s and as far as i know ford mavericks were being made up untill 1995 using the rb30s (if you look in the pic the loom is bundled up in the corner ) thats a nice choice of carb and will work very well with headers, a decent cam, and a shaved head.... i wouldnt do much more than that no matter what any one says (apart from lightning pullys/flywheel ect and maybe do the valve springs) doin any more work in my opinion would be a waste of time/money carbs do have there ups and downs tho.... -there simple -you can use a much more wild cam than on an injected engine -easier to work on the engine (getting at spark plugs is not a problem anymore ) -no loom or ecu -uses alot of gas -secondaries (for the kick in the seat fealin) -power is alot different -lack of power at low rpm -about 20-25 kilo (maybe more) weight reduction id also like to point out that it purrs like a kittin with rb30e cams and it started first pop no trouble just like all good rb's should..... im also yet to find another n/a rb30 that will beat it in a straight line and heres me babbling sh#t again

hiya guys ive just finished my rb30s (carby) project so hopefully i can help you guys with a few things on this build i have an rb30e in my hr31, last year i found a carby manifold and decided to jam it on befor xmas.... im runnin a standard carb manifold from a nissan patrol, with a falcon webber carb i took off a 4.1 litre falcon (just a dirty old 2 barrel around 300cfm), its now cammed up (290*Lumpy cam), and runs a 12lb flywheel and headers. very simple upgrades and ows me $300nz plus im not complaining yet (e/ i know the picture looks a bit shady but this photo was from when i first did it last year) all that's needed to make it run was a vacuum advance dizzy..... with this i can run ANY carb i like if i could be bothered making new manifolds. triple side drafts are expensive and 4barrels cant be modified to fit the stock carby manifold but im sure would make a bit more of a difference. as for using a dohc head id really like to see this done so if any of you figure out how to do this properly please "LET ME KNOW!!" (mad_max_hq@yahoo.co.nz) heres what i do know about it....... first things first your goin to have alot of trial and error testing out ways to make it work (like i already have) second of all the cam angle sensor will work with out any of the other sensors plugged in and with out the injectors plugged in .... ie exhaust sensor, afm, and tps i know this because if you unbolt the cas and spin the shaft you can physically watch the spark do its thing in sequence and its a good way to test for spark ive also ran the engine for a short time on start ya bastard haha..... i had no sensors plugged in except the cas and of course no injectors. only thing im not sure about is it would have only ignition timing with no advance (or just set it to around 25-30*advanced hahaha) and where it advances from. im pretty sure the timing advance is done at the ecu depending on a few variables eg. throttle position, afm, but possibly if we're lucky it just does this on revs from tacho signal from the cas so for a start id just do it!! its goin to work with the standard ecu & cas and is really one of the only ways to find out if it advances at the ignitor pack. if it advances at the ignitor pack/ecu with out the use of other components your done eeezz peezzy if not probably best bet is an msd ignition or simaller sorry bout my SA hopefully this helps and also if anyone can give a second opinion on the ignition side of things it would be a big help. basically these two questions.....where is advance controled? and what variables does the ecu need to advance the timing?