CozzyBrom

can you please explane why coil on plug set up is so shit when nearly every manufacter of cars now used these systems as standard
bmw
merc
pug
reno
ford
vw
jap
list goes on
nice techy post to get your teeth into please
main reson for asking is to do with noz and high power why does it work for jop stuff not for cozzys

GARETH T

the coil vibrates with the engine

Anonymous

...cause Mike Rainbird says so......broomy..PMSL

CozzyBrom

so why do so many mail dealers use them
and that dont realy stick at ford and other main dealers rover lotus vw all bolt there coil packs on to the engine anyway
am more intrested in the performance side of things realy
i hate plug leads its old skool

Anonymous

...the Jap stuff was made for it from stock...the Cossie wernt so perhaps explains why it aint so suitable.

Ryan

i think the fact that its a common failure on a few of them should also be highlighted.

again due to vibration and heat soak.

VW and pugs are very known for it.

Mike Rainbird

iTrader: (3)

Phil AND Brom, have one of THESE .

CozzyBrom

mike fuk off back on ya own post
i know hondas and jap cars that dont 150 k n never had issues
time aint a issue for me how long they last when a engine if fuked after 20 k
stuck in ya old ways its time to move on follow the japs
am sure merc n bmw wunt use them if they had issues

Anonymous

My 2 pence worth till Stu gets here with a definitive answer.




Advantages:

Less places for the spark to leak out of the system as can happen with HT leads

Simplicity/Elegance

A failure will only take down one cylinder not two like on conventional coil packs (* same is true for remote individual coils)

Plugs last longer as they fire less often (* same is true for remote individual coils)




Disadvantages:

Severely limited spaced (especially in fitting into a head not designed for it unless you start machining the rocker cover) imposes limits on the amount of insulation possible

Size of the coil is limited, and hence so is spark strength

Heat build up can lead to premature failure, especially if the engine is tuned beyond standard specification






On a modern production engine thats designed for them they sound like a great idea to me, for retrofitting or very high performance use though they dont seem such a great idea compared to remote coils


My own opinion is that remote coils configured 1 per cylinder is your best bet (what rod had i believe?)

Mike Rainbird

iTrader: (3)

Brom you fat fuck, you're listing STANDARD cars and very few of them are TURBOCHARGED . A Cossie on track develops HUGE underbonnet heat (ESPECIALLY an Escort). I personally would not run them... (but then again I AM stuck in the 80s ).

PS. TNT will be delivering your package tomorrow .

Anonymous

Ah, i see you will be designing a new head/camcover arrangement suitable for coil on plug use then, as the japs didnt just chuck them into an old engine and hope for the best

Stavros

Nissans and stuff have them, but they fail a LOT on performance cars once theyve done a few miles.

200SX and Skyline coilpacks always die now they getting a bit older, and most serious power ones around the world (not so many here as we blinkered to fuck) run leads and a coilpack instead.

Even quicker on tuned cars with even more heat and vibration than usual.

Coil on plug licks anus.

Anonymous

Evolution went like this:

Dizzy
Remote multiple coils
Coil on plug <---- BROM you are here
Remote multiple coils


Try and catch up with the rest of us big fella

the original

anybody know how the escos 'small turbo' coils fare in terms of reliability on a highly tuned engine?

Anonymous

Mike as you see i actually said it probably aint suitable for the Cossie cause it wasnt developed for it..thus could prove a bit unreliable...due to obviously the shonky 80's design

CozzyBrom

each to there own i guess
your doing the same but just u must like clutter 4 great big 10 leads draped over a engine is not my thing
slag the car off all you want i try it if it dont work my loss
even if you having a coil per cylinder its the same thing so am right in saying coil on plug is better than wasted spark

GUZZLER

iTrader: (3)

i've been debating this about my escos, i use a small turbo head so twin coils or a single could be used, 4 coils has been discussed.

Rick

fair play - thats how things evolve

Ginge !

volvo t5 engines and that also means the focus ST engine has this system on it


hope that helps to add confusion


OH and i wont mention how many coil packs we hold in our SMALL dealership

put it this way we sell about on average 18 a month,,,,,,, thats the coil pack and not coil on plug though


its as comon a problem as the heater valves on a fiesta and heater regulator on a mondeo


meaning there wank too

NMS Badboy^NUTTER^

My Volvo T5 doesn't have it

Ginge !

then ypu gpt the pikey old fooker

the V70 DOES have it fitted,,,,,,,,, either that or when i worked at volvo the techs where charging people for parts they was stealing

Rs Gus

iTrader: (2)

my old t5 didnt ginge may be you should clarify that!

Rs Gus

iTrader: (2)

p.s my bike has coil on plug and revs to 14k and vibrates more than a car

Ginge !

the volvo v70 DOES ffs,,,,,,, the 850 may not as i aint looked into em but the T5 v70 does

Rs Gus

iTrader: (2)

just making it clear as its a techy discussion

Ginge !

hey its not that techy, just mentioning that the newer volvos use em, including the turbos and ive also sold more coil packs than coil on plugs too

Rick

vibrations aren't all that i dont think - maybe the heat - which bikes dont suffer from as much?

Rs Gus

iTrader: (2)

you want to feel it between ya legs

Anonymous

Brom, im not actually slagging your car off, its fucking awesome, and i agree that one coil per cylinder is a better idea than wasted spark, i just think you will get reliability problems potentially doing stuff like brunters runs due to the amount of time for the heat to get into them and as you no doubt are aware the resistance of a coil increases with heat and hence the spark strength decreases, if they are remote they dont suffer that, you may get away with it on coil on plug though, so will be interesting to see either way

Fair play to you for trying something different though, there isnt one thing "normal" on your car, which is the main thing i like about it

Anonymous

Well said Chip