itiejim
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| posted on 26/1/08 at 07:55 PM |
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Megajolt on a BEC - can it be done?
Hi, folks.
In an effort to simplify (and lighten) the wiring on my Blackbird engined Fury I was considering swapping to Megajolt.
Has anyone else done this and are there any reasons it can't (or shouldn't) be done.
The one sticking point I'd thought of is the crank position sensor - what do bike engines use and where is it mounted?
Any opinions or experience gratefully received!
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blakep82
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| posted on 26/1/08 at 07:58 PM |
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yep, have a look at www.trigger-wheels.com
they sell crank trigger wheels too, so you can put it on your crank shaft
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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paulf
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| posted on 26/1/08 at 08:03 PM |
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No it cant be done on any engine that revs beyond about 10,000rpm max as that is the max limit of the ford edis.
Paul.
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itiejim
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| posted on 26/1/08 at 08:04 PM |
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So do I need to have to engine out of the car to fit that? - Sorry for the daft question, but I'm more used to car engines where you've
got a nice big pulley on the front to bolt it on to?
From your experience will the megajolt work as well as the standard Honda jobbie? And am I likely to find a map out there or will it be a trip to the
rolling road?
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Peteff
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| posted on 26/1/08 at 08:05 PM |
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Under the front cover on the right hand side as you sit on the bike there will be a 12 point trigger wheel I think on a 4 cylinder bike. There might
be a bit of oil in there when you take it off but it will be very little.
[Edited on 26/1/08 by Peteff]
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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itiejim
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| posted on 26/1/08 at 08:05 PM |
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Thanks Paul sorry I'd posted my previous reply before reading yours.
A friend of mine who runs megajolt on a K series told me it had been tested to 35,000 rpm or something silly - but perhaps not!
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itiejim
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| posted on 26/1/08 at 08:06 PM |
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Thanks Pete - that solves one thing!
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tks
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| posted on 26/1/08 at 08:07 PM |
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i would do a proper research before diveing into this one..
max rpm megajolt
max rpm EDIS4
is there a megajolt wich directly fires the coils?? max rpm???
Tks
The above comments are always meant to be from the above persons perspective.
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blakep82
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| posted on 26/1/08 at 08:08 PM |
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sorry, i'm wrong.
the crank wheel and sensors work up to 13,000 (as stated on their FAQ) but they don't say that the edis doesn't...
sorry!
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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r1_pete
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| posted on 26/1/08 at 08:10 PM |
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You'd be better sticking with the BB ignition, with MJLJ & EDIS4 you'll be loosing a couple of thousand RPM at the top end. From
Memory, if its similar to CBR 1000, the BB ignition is no more complicated than MJLJ, EDIS, Coil Pack.
Rgds.
Pete.
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paulf
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| posted on 26/1/08 at 08:12 PM |
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Max revs for edis is 10.000 it is documented some where ,there is not a direct coil firing one yet but one is being developed apparently.It would be
possible with a cut down meagsuirt but would not really help in this case as he wants to simpliy things.If it was possible itwould still need to be
mapped and i dont think anyone will have a suitable map.
Paul.
quote:
Originally posted by tks
i would do a proper research before diveing into this one..
max rpm megajolt
max rpm EDIS4
is there a megajolt wich directly fires the coils?? max rpm???
Tks
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itiejim
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| posted on 26/1/08 at 08:23 PM |
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Cheers for the advice folks - looks like I'll be better off trying to sort out what I've got. It just looks like a pile of dodgy spaghetti
atm and I was tempted to ditch the lot and start again.
This is the problem when you're trying to sort out someone elses logic (or mess!)
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blue2cv
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| posted on 26/1/08 at 08:24 PM |
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Carb blackbird runs 9-3 trigger, inj blackbird runs 12 teeth and a cam sensor, i have a megasquirt which has been set to run 12-1, so all i have to do
is remove one of the teeth on my new trigger wheel, cant confirm if it works as yet as my project is long term, i just dont get enough spare time to
work on it.
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IDONTBELEIVEIT
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| posted on 26/1/08 at 09:02 PM |
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can somebody please tell me what a megasquirt or megajolt is,cheers and can i have one aswell
[Edited on 26/1/08 by IDONTBELEIVEIT]
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Blackbird Rush
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| posted on 26/1/08 at 09:16 PM |
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Megajolt - diy mapable ignition
Megasquirt - diy mapable injection
Planning similar to my blackbird, was a carb now has bodies & will swap to a 12 tooth wheel eventually but for now will run stock honda ignition
to start with.....not running yet.....
Ash.
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MkIndy7
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| posted on 26/1/08 at 10:21 PM |
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Just a thought, is there any way the timing disk could be fitted to one of the other pullys thats "geared down" and then the electronics
adjusted accordingly?.
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BenB
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| posted on 26/1/08 at 10:40 PM |
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It's worth knowing that the Kronenberg ECU accepts the Honda trigger wheel pattern as standard 
Trying to find someone used to tuning using their software might be fun though.....
If you used a pulley that was geared down (ie rotating less slowly IE cam pulley) then instead of a 36-1 trigger wheel you'd need a 72-2 wheel
IE two 36-1 patterns stuck together. Eminently do-able with CAD, would cost about £30 to get one lasercut....
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Paul TigerB6
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| posted on 27/1/08 at 10:17 AM |
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All sounds like its in no way simplifying matters over simply sorting out the colour coded spagetti that is the bike loom. I managed to identify all
the connections on an injected R1 loom in a couple of hours using the colour wiring diagram in the manual.
Also, i dont see how bolting on a lump of steel that is the trigger wheel, brackets, EDIS4 etc etc is going to save any weight. Surely best to stick
with the standard loom even if it means picking up one off ebay and starting from scratch if the original has been messed with.
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