Alternative Fuels

lambda is lambda,, so is you put the gauge display to lambda there is no confusion when you select LPG or conversely petrol AFR display the calibration factor used is different 13:1 target LPG AFR it is - ================ the orange spring has changed the operating pressure of the converter from a s...

petrol stoic ( 1.0 lambda ) = 14.7:1 LPG blend stoic ( 1.0 lambda ) = 15.5 if your gauge displays only in lambda and displays 1.0 while running LPG then you have 15.5 : 1 mixture if your gauge displays AFR only and is calibrated for petrol then you are actually running 15.5 when it displays 14.7 ( w...

you wont need to run the feedback controller,, just the air and gas valve assembly,, which errs richer all round i am a little concerned about your target AFR advice,, as richer than stoic 15.5:1 only makes extra heat with LPG ( while extra petrol mixes cool ) 13.5 is usually target at WOT in booste...

dont modify the jet in any way ! the FB ( feedback ) versions of the same mixers also offer richer needle options - these systems err rich with jetting,, and use the lambda feedback to a CPU the controls a solenoid that will shortcut a stronger vac /reference signal to the converter momentarily with...

welcome,, interesting project ! myself suspect that that engine could well make past 200 rwhp given the right turbo package and so suspect the 125 may be too small i would err maybe to a 200 FB mixer and closed loop controller the 200 is fairly compact compared to the dome like 225 ,, and certainly ...

here is a little snip of some first start footage of something i have been doing for a mate its a 13b engine,, using an unusual combination of end plates with some porting , fitted with a turbo,, all in a mazda b2000 ute genuine examples of b1600 utes with factory 13b where sold in the mid 70's in t...

the pill/ restriction should be on the line with highest pressure,, the compressor outlet the system as i described needs to have a pressure drop between the compressor and the mixer ie an intercooler so that there is there a differential pressure between the compressor signal and the mixer hat sign...

http://i42.tinypic.com/dwub2c.gif a blow through what? impco smart mixer / dumb converter or a dumb spud and smart converter? there is some tricks to get it richer if impco type there is also some tricks with the vacuum routing to get the converter to respond quicker to the boost rise without the d...

3.785 L = 1 US gallon 4.546 L = 1 british imperial gallon 1.61 Km = 1 mile 100 km = 62.11 miles 250 - 300 RWHP 13bt rotary engine fitted with impco 225 feedback system 17 L per 100 km highway 22 L per 100 km city blended LPG price is 55 to 70 AUS cents per litre same engine fitted with 2 x 550 prima...

i run blow through 225 and it had similar stall on decell after boost issues initially initially i tried the dashpot route,, for partial successes i found altering the placement and the sensetivity of the blow off valve,, and routing the vent back to the aircleaner did a fair bit to help ( the BOV i...

http://eomp.info/?p=8
this is the link for a stepper controller suit the EOMP unit found in all post 1989 rotary vehicles
original unit is to suit s5 with its dual TPS,, currently trialled versions include those for FD and also FE ( rx8 ) engines

in Oz,, and running 225 mixer under boost ,, and yes i have the lean down do-dad ( with vacuum only warning ) fitted ( which takes the stronger vac signal from front of the TB rather than the normal signal from the front side of air valve to lean down the converter/ vaporizer signal,, more vac = les...

hello all, first post !, all the way from sunny western australia FYI i have put about 35 000 km on this customised impco 225 feedback system installed on my 1986 FC 13bt rx7 firstly ,, a little background the system uses the same basic feedback impco 225 vapour mixer install that would be used on m...