bluetop ignitor/coil on redtop engine?

[l1ttle_d3vil]

if I set a bluetop coil/ignitor up and wire it all up accordingly, but run it on a redtop engine/dizzy/ecu etc etc, will it work fine?

i dont imagine there would be a problem, as the spark is still controlled by ECU...

[l1ttle_d3vil]

oh and does the same go for a bluetop distributor setup on redtop running gear?

the inside of my dizzy cap is all black around each sparking point, kind of like dust / soot but it doesnt come off. looks kind of like its been burnt, is this normal? all other dizzy caps ive looked at have been black so havent noticed it before...same goes for the red/brown box which says "don't remove" on the inside of the dizzy.
could this effect whether of not the spark is transferred to each HT lead or something at all??

[crispy'86]

from memory it may not be able to be done, redtop has 5 wires, bluetop 3 pin plug and 2 wires going to coil. Redtop's use different set up for coil. who knows but if the ecu controls the spark through different wires you may have to be careful.. Those "black marks" is calle tracking of the cap and the electronic pick up which would indicate there's a major probem with the pickup, yes it does affect the spark distribution as there'd be a weaker spark to the cap

[l1ttle_d3vil]

ah sh*t, but the only two wires which control the spark are going directly from the ecu to the ignitor (igt and igf), i could wire these up to the bluetop ignitor for the spark timing/signals etc and the rest are just 12v ign and earths etc.

reason im asking is ive got no spark on a 4age redtop, ignitor and coil seems to be wired up fine from what I can see but still no spark and the only other spare parts ive got here is a bluetop ignitor/coil and a bluetop dizzy. it could be the dizzy stuffed all together though from what you're saying, and the ignitor/coil is working fine but its not getting from the dizzy to the spark plugs.

hmmm cars.....

[big_boy]

douse the red top have a remote mountd coil if so you can hook that lead straght to yor spark plug to work out if its a crock dizzy or spark track insice the cap

also what type of trigger mechisnam do they both run ???

[l1ttle_d3vil]

yep, remote mounted dizzy. so run the ht lead straight from the coil to the spark plug?

what do you mean what sort of trigger mechanism do they run?

[big_boy]

yep thats the 1

um are they both mag paulse or opitcal ect if you dont know show me a pic with the cap off each of them & i will c if i can help

[l1ttle_d3vil]

sweet ill try bypassing the dizzy and see if I get spark. i'll post a pic of my dizzy tonight...

cheers.

[l1ttle_d3vil]

well i tried bypassing the dizzy, running the ht lead straight from the coil to #1 spark plug; nothing different.

doesn't seem to be the distributor then, or atleast not at this stage. so im still interested in trying the bluetop coil/ignitor. shouldn't be any problem in doing this as mentioned above aye?

pics of distributors ...

redtop distributor.





bluetop distributor.

[big_boy]

ok there both mag paulse

but you when you tryed bypassing the cap/rotor you did have the spark plug out of the head ae & clamped to a good earth

[l1ttle_d3vil]

sweet so they are interchangable if need be?

nope, spark plug was in the head as normal. would spark on 1 cylinder not have been noticable? i would've thought it would atleast sounded like it was detonating. ill try it with the spark plug out then...

[big_boy]

iv never heard of that but you should be able to see the spark

[l1ttle_d3vil]

okay I bypassed the redtop dizzy, clamped the spark plug to an earth and cranked it over - there was spark.

so i changed the dizzy, put the bluetop dizzy in and cranked it over and it still didnt fire...took the spark plug out and earthed it out, and while still running through the dizzy cranked it over. still had spark as before.

im fairly positive its not fuel or anything, the spark plugs have fuel on them when I take them out but ill get ahold of some engine start and spray it down the manifold and see what happens, and also do a compression check to make sure.

any other ideas or things i could try???

[big_boy]

yep next is to try the spark plug clamped up again but thro the hole dizzy system like it woulb be in a car just use #1so start with & work thro & check them all

[l1ttle_d3vil]

yeah thats how I was doing it with the bluetop dizzy...

ht lead from the coil --> dizzy, then the ht lead from dizzy to spark plug. i then had the spark plug out of the engine and earthed out, and it was sparking when I was cranking it over. ive tried it like this with all 4 ht leads of the dizzy going to the spark plug and every one of them sparks. but when they're in the engine it won't fire...

[l1ttle_d3vil]

hahaha hmm err umm....riight now i feel like a complete dick. i sprayed some engine start down the manifold while cranking it over and it started firing all good... doesn't mean there wasnt a problem with spark in the first place though

so hopefully got it sussed now, once i can get a fuel can to get some fuel back here!

[l1ttle_d3vil]

ok not so bad now...i got it started today after quite a bit more work.

so all up, this is what was wrong...

* relays/ecu ign + sources were wired up to ACC, so they all switched off when key got to STA
* earth for ecu and the sensors wasn't connected to the manifold
* tachometer wire was connected to earth
* and most importantly - fuel pump + and - were wired the wrong way so the pump was blowing into the tank, instead of sucking the fuel out!!

so im not sure if the redtop dizzy was actually faulty or not, its currently running on a bluetop dizzy but its loud as fark with just 4-1 extractors bolted on. next step is get a muffler and fit an exhaust, then tidy the rest of the car up.