jagman

minis I can help you with ,I sell a vtec conversion kit which is great, everthing fits and well engineered,its not available in the uk from anyone else,the conversion makes the mini whoop ass fast:d take a look at http://www.minimania.com item number MT10000 0-60 in 5 seconds

by multi fire I believe the sequential injector system ,no longer is sequential under wot /high rpm conditions and the ecu fires more than one injector at a time ,this in itself removes the fine fuel control at high demand situations, the standard system also must surely cater for the cats that are fitted and cannot add too much fuel to knacker the cats, but if cats are removed and boost levels increased the ecu does not know that there are no cats to knacker. when I say the head etc design,lets say characteristics,all the factory fuel mapping is based on the standard conditions that the head/cams/valves see at pre determined levels of boost and airflow from the stock turbo,if the car is decatted or a different turbo used the quanity of air and the rpm that it is achieved is different so larger injectors alone would be out of whack 440-550cc with a decat would surely still have fuelling errors.yes the lambda sensor reads a "delayed" reading and the fuel ratio in the chamber may be different,precission fuelling is the goal but there are tolerances what AFR variations are normal on a mapped big injector set up? these variations allow the cold start thing to be feasable

yes John I agree with the roughness of the mixture , but the stock ecu during large accel periods also gets rough and I think multi fires the injectors,the boost pressure /flow also gets unlinear and has rapid changes,and the rpm changes quicker,Yes a quality standalone can cope,but with such large variations and airflow speeds exceeding the design limits of the head/manifold/valves/cam even that will get out of shape ,its not that different from adding 100 shot of nos ,kinda best guess,the point is the cost of injectors,pumps,fuel lines,ecu upgrade,fuel rail,fpr,mapping,etc will run into many thousands of pounds,and is only required at the very high boost levels,not used that often,and these are road cars with the odd drag run, even with the £1000s spent on fuel/mapping etc they still fail and or can have reliability/longevity issues there are not many willing or able to justify thousands spent on a 13 year old car just for the odd times they nail it,sometimes engineering excellence is not required and the primative system that works is good enough,one glitch with the most advanced system and your engine is toast anyway! it would not take much to make a simple enrichening injector variable flow with boost and give an element of refinement during the peak demand times cheaply

its a tech forum for discussion and any discussion can promote knowledge,so here we go ; the stock system control the injectors by voltage pulses the duration of which determine the time they are effectively open for and hence fuel flow ,for accurate fuel flow the fuel pressure must be tightly controlled ,first drawback of aftermarket fpr,s they can fail or become erratic and require a pressure sense line and ultimately its another link in a chain, The voltage pulse to the injector must be a "clean" signal ,that is one with constant voltage (bear in mind the cars voltage is constantly changing with load) and no interference (emi) The stock ecu does this (it monitors the battery voltage-please someone correct me if I am wrong) it also is well grounded and uses screened cables and internal bonding and impedence matched to the stock injectors ,the use of an aftermarket piggyback ecu firstly can corrupt the ecu signals both input and output,they are also another source for emi,grounding issues,and poor connections, another link in the chain- If we accept that the stock injectors "max out" ie the pulses to the injectors reach a speed that will not allow further opening/closing ,when does this happen? and what ecu signals determine this? TPS,RPM,MAP/MAF,TEMP would be the main culprits I suspect,and for how long do these conditions remain? I would think it is the point of boost cut plus a tad of safety margin,-thats the point we all overide:d to be continued...

It not quite an indescriminate fuel dump ,its at a prescribed boost pressure and a quantified amount of fuel , the ecu as standard does a fine job of controlling injectors based on its parameters ,looking at throttle,speed,rpm,air flow etc ,it throws out economy when you floor it and maps accordingly but when you have modified the turbo ,cats,etc the standard injectors cannot cope with the increased air flow but only during the higher boost conditions at the higher rpms until then it is fine,large injectors also have their downsides rich running at the lower rpms ,foulling plugs,off idle stumbles,washing bores etc I am not looking at a super high horsepower monster but say around 450-500 bhp where the stock injectors are only just light of the mark at the high boost and high rpm levels and adding the extra 50-100 bhp of fuel to match the extra air within the reqd afr range ie safe no I agree not precise but safe and there is quite a safe tolerance band to play erring on the rich side

If you consider the times the ecu is in open loop except during start, ie WOT it is still controlling the injectors pulses,sothe additional injectors only need finer control, the first refinement is to use the feed fuel pressure to the coldstart injectors via a rising rate regulator thus they have greater flow at higher boost pressures,due to them being open at all times and not pulsed the effect on fuelflow is greater on them than normal injectors, so at 1 bar you would get x flow but on rising boost x+ Bearing in mind the low cost of components to further refine ;2 boost switches could be used one at 14psi and one at16psi each controlling its own injector. if it came to it 6 pressure switches could be used controlling 6 injectors at 1 psi intervals 14-20psi for testing purposes an AFR gauge and a few runs would be required to fine tune

I have an idea for fueling the tuned supras at higher boost levels,and would like to see if anyone can fault the thinking; As we know running the engine lean can be catastrophic,and running large injectors problematic with control of them at the lower rpms and expensive with fuel rails,ecus,etc What if say 2 extra injectors were fitted in the maniflold equi-distant to allow an even fuel spread across the manifold (a simple tap and thread job) these extra injectors are not pulsed controlled ones but cold start injectors which are simply on or off as used by a variety of engines (12volt switched) the switching of these injectors in turn controlled by a boost switch which is set to say 14 psi (1 bar) ,so at high boost the cold start injectors open to send atomised fuel to the manifold (cold start injectors are available in a variety of sizes so lets just say 400 cc each) this extra fuel would enrichen the mixture for high boost conditions,but the lambda sensor would back off the standard injectors if it saw too rich so the stock ecu would still control within its parameters and thus you have extra fuel for the extra air from a single turbo - cold start injectors not prone to failure because they do not pulse only open -opinions please am I daft or is it feasible?

people find it easier to criticise rather than praise especially if they have forked out money, now if we did the same thing but directed at say builders or plumbers or accountants or.....who has not been done! I certainly have some tales there,---- him without sin cast the first stone

my own project is mid conversion I am using a better supercharger , but its not the conversion so much as making it a complete bolt on kit for numpties,with detailed fitting instructions which is the hard part, you would not credit the ability of the man in the street to get something all wrong ,and then blame the product,the design,the car ,the weather,their mum.... even simple bonnet stripes get fitted wrongly and its the stripes fault! I am also incorporating an electric water pump,under car oil cooler,extra bonnet vents,combined air and water charge coolerwith 3 rads,and lots more . It will be featured in a couple of mags and I am hoping to do a track day comparision against an M3 or M5 or similar so it can be put into perspective just how quick you can make a Mini go. It would be nice to compare against a JCW but that just may piss off BMW and the mags would not want to know. 400bhp in 1225 kg car should be quick:D

they are the same block accross the range but the cooper s has different pistons due supercharged,stronger rods,crank,extra cooling,6 speed box ,bigger clutch/flywheel/driveshafts- they share the same head though

chap called Fireball Tim , its a drag car more than road ,also stock 6 speed getrag and lsd ,only the clutch uprated and flywheel! he has done many runs this year and it has stayed in one piece. makes my own project of 325 bhp + 70 nos seem tame and I am using ARP bolts and Wosner forged pistons etc,but nice to know the capability of the stock components its not a one off thing either Amd had one to 430 bhp at which point the head studs failed but again stock bottom end!

As some of you know I am into the new Minis ,just thought I would run this past you ;a MINI in the US is running 11 secs and 128 teminals with 1.6 60ft, it would put to shame a lot of supras:eyebrows: but the interesting thing is he is using a stock (except pistons)bottom end,not even rod bolts upgraded ,was making 500 bhp (70 nos) using a twincharger @25 psi boost ,and stock cylinder head, and you thought the supra had a strong engine! bloody good from a 1.6 litre engine- the guy is now looking for 600 bhp and 10sec qtr and is upgrading the bottom end!

A Hawker hampster ,would not really have instilled fear in the enemy,and filled the pilot with bravado----- could of confused the Germans though --achtung hampster!!!!!

would a fundamentalist not blindly follow this whereas any "normal" follower would question and reason why this has been written. this is a problem with all religions , to question could lead to dispute and doubt and ultimately unbelieve and is not a feature that would perpetuate the religion - so the stock answer is that you do not question you have faith. sometimes with dire consequences as in jonestown. religion always has been about the control ,of a very large population of people , sometimes with limited education, and to be fair the lure of everlasting life is a biggie. Comments like "nuke them all" are based in group mentality and seldom thought out by the individual more a repeating of a comment made by others in the peer group Its more than coincidence that religious followers are commonly known as a "flock" and indeed follow-I bet CJ got all excited when I said flock:)

I once worked on the Merlin engines in a lancaster,they were actually packhard engines from the US -packhard used to make them under licence during the war and they have loads of them as war surplus still wrapped up in the States. absolutely awesome to stand 20 foot away from one running,if you look at the exhausts they are about 6 inches long! and spit flames during start,the whole ground shakes around you

The trouble with religion is that you are not usually making a choice as to which you follow,you are forced to follow your parents religion, especially if both parents are the same religion.if the parents religions differ then the more the likelyhood of not being bothered with religion at all. In my lifetime I have not met anyone who has been surrounded by a shaft of light and been whispered to by a voice in his head,and if I did I would certainly think the person one step from the looney bin. individual thinking is as a rule the complete opposite of religion which follows a sort of "mob rule" or "blind faith" so I have never been a fan. Revolutionist - the term came from the individual thinkers who thought the earth revolves and were persecuted by the religions ,if the religious mob had suceeded we would today still think and be taught that the earth is stationary! That is the type of thing which I believe makes religion so dangerous,a mob of people who for example do not think men and women are of equal status,or that women should not have birth control,or that if the bloke dies his wife should jump on his funeral pyre,or blokes should all wear hats,or can have 4 wives,or.........and so it goes on

Ive got a CDA7939R if its of any use to you £60

I have informed the necessary authorities so now its in the hands of the criminal justice system , if they catch him I reckon he could get as much as 100 hours community service !

I think you will find the Vulcan bomber "missed" at port stanley mostly due its clockwork bomb aiming device ,a newer aircraft would have been far more effective but the old school just had to use the Vulcan once in anger! once upon a time they used to do a full roll on air displays never saw it do one myself but it must have been quite a sight! they stopped doing them due to airframe cracks . they were long past their sell by date when the falklands happened

ever seen the pics on ebay? the cars look real good till you see them in the flesh,-- horse, mouth, gift ,look,;; please rearrange:)

top mounts are HKS, but they are not being sold separately,pics? I havent taken any,but they are a pretty purple anodised, if that makes any difference:) they do fit under your car and no one ever looks at them

bump- no one interested ,shocks alone are over £1500[sHOCK][/sHOCK]on par with ohlins

For Sale , a high quality and very rare set up ;4 quantum dampers height adjustable,and damper adjustable,2 front hks springs and 2 rear eibach springs,4 adjustable spherical ball topmounts. this set up would cost a small fortune ,the shocks are made in england by quantum who specialise in high quality race shock systems-£650 the lot ,any silly offers will be ignored:d

SOLD( in 2 mins) some people dont hang around!

I have a pair of new unused uk glass headlights £180 the pair + £8 postage first pm I receive can have them