Outer Limits 4x4 Board

Hi Matt,
I'll have a look tommorow at work for you i've got some notes somewhere that should show which way they go. The pickup out puts an AC wave form which when reversed alters the firing posiiton of the module which is why you have to reset the timing after changing the wires. From memory the BIM024 fires at +.8 volt AC when the wires are reversed this causes the rotor to misalign with the cap by half the distance between the pick up points in the dizzy, if that makes sense. As well as erratic triggeing of the coil but i can't remember why. Also from memory + pickup wire to pin 7 - to pin 3
Brad

went out and tryed swapping the wires and couldn't get it to start but i found if i leave the white wire with the blue line off the + of the coil it solved the problem. no miss under heave load. both wires from the car were on the + side of the coil, the muilty spark box is the only thing on the - side


now i'm happy. now to put the gas system in

Brad, I tried your suggestion without success. The main problem being I just couldn't get the car to run... Even if I rotated the diz through its full range it wouldn't go. I mean I didn't take the thing out but I rotated probably the full 30 degree before and after and I just couldn't get it to fire... I am guessing by swapping the wires it would make the diz retard>>> Dunno but I tried without success.. Any advice?

Matt

does it crank and fire then turn off? if so swap the wire going to the + on the coil. mine is running fine so far with 1 wire going to the + coil and 1 from the muilty spark to the -

Umm, can you say that again....? That doesn't quite make sense?

Well it's been a while since I updated this thread so for those who are interested...

Yesterday I had my dizzy checked and calibrated on a machine to check all was well. Also checked TDC on the engine to make sure static 0 was actually 0. Well, dizzy is fine and doing all the right things. TDC is as marked and car has been re-timed to approx 10degree BTDC.

The previous suggestions re: swapping the module wires over had no affect except made the car run worse..

So, what I now have is a engine and electrical system fully checked and in tip top shape. At full noise I do still have some high end miss but its so far up there that I think most wouldn't even know it existed...

Interestly though... when we put an oxy sensor up its bum it was telling us the car was overfueling at full noise and yet if we increased fuel pressure to say 20psi the high end miss disappreared... When we dropped it back to the correct 15psi for teh projection and experimented with clamping the return fuel line (in affect increasing pressure again) the car would rev out to well over 7K! So it had us all scratching our heads....

Whatever the small problem that remains won't worry me. The thing is a rocket and that top end RPM it just isn't needed for what the car is meant for but it has become a bit of a hobby trying to find the fault!

geothro wrote:Well it's been a while since I updated this thread so for those who are interested...

Yesterday I had my dizzy checked and calibrated on a machine to check all was well. Also checked TDC on the engine to make sure static 0 was actually 0. Well, dizzy is fine and doing all the right things. TDC is as marked and car has been re-timed to approx 10degree BTDC.

The previous suggestions re: swapping the module wires over had no affect except made the car run worse..

So, what I now have is a engine and electrical system fully checked and in tip top shape. At full noise I do still have some high end miss but its so far up there that I think most wouldn't even know it existed...

Interestly though... when we put an oxy sensor up its bum it was telling us the car was overfueling at full noise and yet if we increased fuel pressure to say 20psi the high end miss disappreared... When we dropped it back to the correct 15psi for teh projection and experimented with clamping the return fuel line (in affect increasing pressure again) the car would rev out to well over 7K! So it had us all scratching our heads....

Whatever the small problem that remains won't worry me. The thing is a rocket and that top end RPM it just isn't needed for what the car is meant for but it has become a bit of a hobby trying to find the fault!

to you Mattstar for perservering with the problem .... 7,000 rpm is a fair bit for a bored 4.4 motor ... that crank will be flexing all over the place.

Now time to give Darren a run and show him cubes rule

With the existing miss it still has (very small from what you have said) Are you posative it isnt related to a manifold leak.
I know its a bit out there but hay stranger things have happened in a rangie.

Nottie, mani leak is unlikely as it has no mis at low RPM only full noise and I have a vacuum guage that reads perfect on vacuum and engine condition...

Thanks for the suggestion though!

Ello MR Simpson.. Yep 7K but certainly not something done daily.. Be a great way to push a conrod out the side of the block!!!

It really is getting better now... Doing a run on the weekend so will tweak the computer to see if I can dial it out...

Must pop up there soon. Where the car pics...

I'm doing a shakedon of the rcae car at Morgan Park on Wednesday if you want to come!

geothro wrote:I'm doing a shakedon of the rcae car at Morgan Park on Wednesday if you want to come!

Tell me more about this matt ... can I bring the RX4 to drive?

PS. 7000 rpm = no more engine warranty ... Although you've had themotor for a couple of year by now

did i say 7.. no i meant 3500.. oops.

yep bring the rx4. $80.00 per driver but you need a cams license.

geothro wrote:did i say 7.. no i meant 3500.. oops.

yep bring the rx4. $80.00 per driver but you need a cams license.

$80 - I got
Cams logged book RX4 Coupe - I got
Cams License - I don't got

Well get one... You won;t do much racing without one. Super simple to get. I think all you need is an LS2 from memory its called. Will get you on most tracks and hillclimbs. Wont get you into door to door if its a CAMS sanctionedd event but your not planning on that anyway.

Got to the CAMS website! AND WE CAN GO RACING!