2.0 conversion to 1.8 Coil Packs

[fatti03msp]

so the plugs where not the problem lol.

Friday morning when i woke up it was doing it again, but this time its at 10psi.

Also i mashed it in 1st gear today cause i thought that was the only gear i could pretty red line. Nope the dam car acts up around 5-5.5k and my boost gauge was reading 15psi and just to make sure my gauge wasnt acting i waited a lil bit turned the car off and did it again and i got 10psi in 1st, since i have owned the car i have never his 1psi in first so i have not clue WTF is going on.

My next step is new wires.
Do i just buy 626 wires?

Also the stock coils will not seat on plugs with the 626 VC.

im about to throw in the towel and swap back to stock, i really dont want to cause the 626 VC is powdercoated and looks a hell of alot better then my old crummy stock VC.

 

[jonridinhi]

wires

Those are the wires that I used and i did not have one problem out of them. Pluss i know the vc seal is adjustable and it moves up and down the plastic boot so it works perfectly.

 

[cougar10agREDUX]

are you trying to run stock boost? whats your AFR under boost? have you changed anything else at the same time?

 

[DubbyDoo]

wires

Those are the wires that I used and i did not have one problem out of them. Pluss i know the vc seal is adjustable and it moves up and down the plastic boot so it works perfectly.

... dont know if I would have bought those "jdm" plug wires... they didnt do a very good job of researching what they fit
"Fit 99-02 Mazda Protege 4 Door Model Only ( Will Not Fit Protege5 )"

 

[fatti03msp]

are you trying to run stock boost? whats your AFR under boost? have you changed anything else at the same time?

no im around 14psi, when i first got the car back i was having no issues like this but once i swapped to the 626 coilpack i have been having trouble. my A/F's are 11.5-12, and no nothing has changed since i added the 626 coilpack besides me changing the plugs.

 

[fatti03msp]

wires

Those are the wires that I used and i did not have one problem out of them. Pluss i know the vc seal is adjustable and it moves up and down the plastic boot so it works perfectly.

those are the wires i have now, they where on the coilpack when i bought the setup off of a forum member so i want to stay away from those.

Im fine with stock wires too, i just dont know what to get. I just want to test and see if the wires i have are bad.

 

[cougar10agREDUX]

those are the wires i have now, they where on the coilpack when i bought the setup off of a forum member so i want to stay away from those.

Im fine with stock wires too, i just dont know what to get. I just want to test and see if the wires i have are bad.

mm maybe the coils just dont have enough energy, i remember seeing a while ago people keeping the stock COP setup because they said it is acually more reliable and has a stronger spark for higher boost and power... i could be wrong tho

 

[fatti03msp]

i heard that too, i just didnt think i was at that point yet.

 

[cougar10agREDUX]

i heard that too, i just didnt think i was at that point yet.

you can try that earth ground system. theres one setup that has you cut the ground wires to the coils and connect them to a plate which is connected to a larger gauge wire and then back to the battery.


i wonder if we can retrofit EVO coils to work with the stock ECU

 

[fatti03msp]

you can try that earth ground system. theres one setup that has you cut the ground wires to the coils and connect them to a plate which is connected to a larger gauge wire and then back to the battery.

never heard of it and not all about cutting the wires yet...

but if it comes to that mine as well try it lol.

 

[cougar10agREDUX]

never heard of it and not all about cutting the wires yet...

but if it comes to that mine as well try it lol.

yeah i def say try the regular earth grounding system before you touch your coil wires.

what did you end up gapping your plugs to? i'd go with the tighter .028, maybe a bit tighter. you could try side gapping the plugs but i don't know how side gapping holds up in boosted applications. also in order to get the most out of side gapping you really need to index the plugs anyway.

i wanna try those plasma spark plugs from okada projects. they make some good ignition stuff from what i hear. superstreet or one of the other tuner mags dyno'd their direct replacment coils on a couple cars and made some very good gains, expensive tho. i was thinking of sending in a set of our coils and have them do their magic on them.

http://www.okadaprojects.com/usa/products.htm

EDIT: the plasmaplugs are acually made by someone else, but again magazines noticed some gains with just the plugs. http://www.pulstar.com/

 

[fatti03msp]

ill have to look into it that but ATM the i have the plugs gaped at .028

 

[protegedude25]

ok i knw this post is old but i was wondering if any one can explain the wiring for the coils are they the same as 2.0 or do i gota change some wires around thanks

 

[Alejo_NIN]

it's the same
plug n play

 

[twentytwocpb]

how easy is this conversion? is it plug and play? anyone got any step-by-step instructions? planning on gettting a 1.8 coil pack from a miata. Is there a certain year i need? maybe 99-00 miata? Help Please!!!!!

 

[kyle's protege5]

i never understood the point of this "mod"

lets take a better design by having the coil right on top of the plug like every performance car in the world has, you know so there is way less resistance because the spark has way less distance to travel, and go back in time to an old less efficient way.

If you really want to improve things, the only thing you should use off of an old 1.8 is the plug wires. And not the crappy stock ones but a set of really good aftermarket ones. Then get yourself a really good 4 post MSD coil or even better an MSD coil and an ignition box and actually improve your car and not go back in time.

 

[jonridinhi]

Not really performance mod. I did it for the reliability. Heat is bad for coil packs. Right on top of the head is right above the heat. (I had 3 bad coils in about 6 months.) So I did this swap but moved them to a cooler location than on top the head or right above the header. Some others I know have done it for the clean look. No gain proven but I have been running this now for awhile and no issues. But to each is there own. Yes i was getting a bad set of coils by luck but it was a nice fix.

 

[njaremka]

i never understood the point of this "mod"

lets take a better design by having the coil right on top of the plug like every performance car in the world has, you know so there is way less resistance because the spark has way less distance to travel, and go back in time to an old less efficient way.

If you really want to improve things, the only thing you should use off of an old 1.8 is the plug wires. And not the crappy stock ones but a set of really good aftermarket ones. Then get yourself a really good 4 post MSD coil or even better an MSD coil and an ignition box and actually improve your car and not go back in time.

the 2.0 liter setup isnt a true COP setup. the only real difference between the 2.0 and the 1.8 setups are the location of the coils. the 2.0 nology setup is a version of the 1.8 setup, but uses aftermarket wires. the 1.8 oem setup is the cleanest, in my opinion.

 

[twentytwocpb]

so.....im guessing plug and play?

 

[njaremka]

yeah, for the most part. i had to cut apart the wire harness and reroute some wires, but it all pluged right in