suparuss
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| posted on 4/12/06 at 04:18 PM |
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if i remember correctly when i converted my audi 5 cyl to megasquirt, i just set it to fire all injectors at the same time in one bank due to the odd
firing and works fine. i dont think they have to fire at the any particular time during the stroke as long as there is air/fuel mixture in the intake
ready to be sucked in. especially at high revs.
also megasquirt has wiring for 2 banks of injectors so surely you could have them firing one injector each on a v-twin in alternating sequence?
the guys on the megasquirt forum know more.
russ.
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NS Dev
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| posted on 4/12/06 at 04:22 PM |
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yes, that's fine for the fuel, but the sparks are trickier!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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MikeR
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| posted on 4/12/06 at 04:33 PM |
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seriously silly idea....
more than one megaspark. 100 quid a pop assembled, you might get a discount for ordering more than one. Use 1 crank trigger but two sensors and map
each cylinder independently.
In fact,
2 mega squirts handling fuel and spark to 1 cylinder, 2 mega sparks handling the other cylinders.
Ok, its a crap solution and will be an arse to adjust timing but ..... its an option.
I'd prefer to investigate getting new keys from the dealer like i said before, got to be worth a punt.
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Volvorsport
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| posted on 4/12/06 at 07:13 PM |
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i dont think dta is that expensive , around £500 for a starter package .
i think you could easily get the volvo ecu remapped (custom) of course you wont be doing it so that would be extra .
the 5 cyl is the same weight thereabouts as the old redblock 4 so about the same as a pinto with all the hardware on it ie turbo .
i dont think the internals are as strong on a whiteblock as they are on a redblock spesh if you use the early T5 engine .
saying that you could get the volvo engine up and running ,, and use an MBC to about 16 psi . the fuelling is there for it , , but you have to make
sure the engine doesnt sense nock or it retards the ignition .
i reckon its cheaper to get the volvo running on an ecu especially since you could buy a whole car for around £300 .
if it goes wrong upgrade it, theres a chap with a T5 engined beetle , and hes plenty happy with the power , you could just slot an upgraded ecu in ,
and see what happens .
www.dbsmotorsport.co.uk
getting dirty under a bus
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Catpuss
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| posted on 4/12/06 at 08:08 PM |
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quote:
Originally posted by liam.mccaffrey
can't you get an aprilla agent to provide keys for you, surely this is a goer, what happens if you lost the keys to you aprilla bike??
might cost a few quid, though not as much as 2 ecus
[Edited on 4/12/06 by liam.mccaffrey]
If its the same as Honda, if you loose 1 key you can clone the 2nd. If you loose both then its a whole new ECU.
Basically its to stop bike theft. Unfortunatly it means using parts for genuine reasons can be a PITA.
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NS Dev
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| posted on 4/12/06 at 09:34 PM |
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Hit the nail on the head catpuss!
Volvorsport - the £500 DTA ecu can't do odd-fire engines.
I'm using the S60 PRO - got a decent price now though, still mega money but put the engine etc out of the class 9 up for sale.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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NS Dev
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| posted on 5/12/06 at 09:28 AM |
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Just a quick pointer to my engine for sale bit - just had a cash offer of £1400 for the XE engine and throttle bodies etc etc......
if anybody wants it then its open to higher offers.
Bear in mind apart from the sump its basically a complete 200hp engine "on the key"
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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tks
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| posted on 5/12/06 at 09:59 AM |
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go Aprilla dealer...
Just write to aprilla Uk
and say you need 2 keys programmed in 2 ECU“s..
its by far the cheapest and the best solution.
also the fastests..
say that the 2 keys you had are fallen in the pond! trown in by a baby or something....
the dealer can program them in, in the hayness manual it states how...
orrr just search for 2 other ecu“s on ebay with the orginal keys....
its a pity you are not in spain.. i would love to make a Megasquirt for just 2 pistons! its allot of less work!!
Tks
[Edited on 5/12/06 by tks]
The above comments are always meant to be from the above persons perspective.
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NS Dev
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| posted on 5/12/06 at 10:04 AM |
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I've decided now, going with a pair of DTA S60 Pro Ecu's.
While these will cost me a LOT of money, they will still be worth a lot of money secondhand for some years, they are completely waterproof and
mudproof, and I can map them to do what I want without all the emmissions gubbins and rubbish with the std ecu.
I can also then run slightly longer ram pipes and different exhaust and make a few more hp and better torque spread too.
On my reckoning we should be good for 150 to 155hp per engine approximately based on the std engine's 143hp...........which a) will kick the ass
of a twin TL1000 car and b) will start to worry some of the big 4 cyl twin engine cars 
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Agriv8
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| posted on 5/12/06 at 11:12 AM |
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Nsdev,
If you havent ordered already here is my 2 peneth. I Got 5 mins to have a look at my VEMS unit ( SWIMBO demended christmas shopping was started last
night ) and I think that may be able to do it Fuel and spark.
here is why
The spark on my v8 setup is driven directly from coil drivers withing the ECU there is a setting that apears to let me fire a spark at a known degrees
from the missing tooth on the trigger.
so therefore should be able to do it. Not got mine running yet as still at the coffee table testing stage ( all sensors are up and running apart from
water temp that needs me to run through the term calculator to synchronize the resistance reading with the actual temp ).
Though I am still at the learning stage and raiding the scrap yard for the VR sender this afternoon hope to have a the ECU hooked up to the engine
next week.
regards
agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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NS Dev
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| posted on 5/12/06 at 11:20 AM |
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I think the rest of the spars are then fired at even numbers of degrees relative to that pickup point though, as in even increments???
Obviously with my engine they are uneven increments i.. 60 degrees and 420 degrees or 300 degrees then 420 degrees etc
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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02GF74
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| posted on 5/12/06 at 11:45 AM |
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going back to your v-tiwn; with wasted spark, when you fire cylinder 1, on what stroke is cylinder 2 and vice versa. (sorry, don't want to
think rihgt now to work it out for myself  ).
is there no way to put a sensor on the cam so that you can identify what stroke you're on and then fire? (can't use the crank for
that).
surely aprilly ecu has got the same problem of knowing which stroke the engine is at so how do they figure it out?
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NS Dev
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| posted on 5/12/06 at 01:20 PM |
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oh it has, it works it out from the crank trigger position.
But the mega wheel decoder cannot then give two pulses in two different places relative to the one trigger point, based on the position of the single
cam pulse, which the aprilia (and the DTA and various others) can. I am lead to believe that the new microsquirt will be able to do full wheel
decoding and unequal fire but that remains to be seen.
As it is I have now sold my other engine and ECU for £1400 which will pretty much pay for the two DTA ecu's.
These are then worth good money s/h so not such a bad investment, as they will also be pretty quick and easy to map with the DTA software.
Interestingly just been turned down on the mapping job by a "recommended" rolling road due to the noise that the engines will create when
solid mounted making det. too difficult to hear.
Just spoken to Steve Walford (SW Motorsport) though who is in my grasstrack club and he says he'll take on the mapping job, no probs as long as
I fit a Bosch knock sensor to each one he has an earbud earphone and amplifier he connects to them and wears earmuffs over the top which gives pretty
good quality of "listen" for knocking.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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MikeR
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| posted on 5/12/06 at 05:43 PM |
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let me know what day thats happening, love to be around, i'll even take pictures / record it etc for posterity. I bring my own ear plugs (and
ear defenders)
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NS Dev
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| posted on 5/12/06 at 06:03 PM |
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Cool, no probs Mike!!!!
Steve is in Northfield, south Birmingham. Not sure whether he'll be using his own rollers or the ones he uses at the moment then. He has some
he's in the process of setting up but I think they won't take the power.
I'm just worried about the chains over several hours mapping. Think they may need stops to cool down pretty often!!!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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