You can buy just the rubber boot and metal springy thing. Look it up on RockAuto! That coil might still be serviceable!!!

 

bought another set, they improved it a bit. potting goes all the way to the top, correct depth for a half decent fit instead of flopping around in the well. still has the garbage copper rod that will corrode and the same pitiful contact area.

old ones getting returned but i obviously would not pay for these unless desperate

 

What brand are you buying? I noticed that Amazon is selling a Walker branded one that may be better for $36 each.

RockAuto is selling Standard branded coils for $76 each.

They are also selling a six-pack of NGKs for $212. The pictures look like they have the quality you are looking for.

 

a-premium, i’m just punting the car down the road so it’s not my problem. supposedly the newer lucas ones are good, that’s what swallows racing is using in their cars.

 

Apologies for the bump, but there is an update on the ignition coil saga. It looks like the Walker coils mentioned above are no longer available, and after a false start with ECCPP coils, I bought a set of these Brock-labeled ones to see if they might be any good. Now that I have them in hand, they seem to resemble the QYL ones with the rectangular piece embedded in their dielectric material and the less questionable spring, although the contact material in the body looks a bit smaller, and the bolt spacers are silver-colored rather than brass.


I haven't tested them in a car yet, and I don't urgently need them, as I was lucky enough to be around when the Diamond-made coils were available, and currently have a set of those in. Just wanted to post these pictures for reference.

 

I want to hear from anyone who has been unsuccessful with coils that use these kinds of springs in them.

The coils that use the smaller, thinner springs are definitely a bad sign.

 

So i bought some new boots for my coils as my boots were swollen and sat a bit loose.

so the new boots arrived and they are a nice snug fit.

i used the rods that were in my old coils as they looked just slightly thicker.

the new ones do look pretty good just the old ones seem to be the top quality best ones.
Also what i did notice is that my coils are the sought after made in japan ones with the brass bolts.
no idea how old they are as i could not read the date but the seem to be working great.

one thing i did notice is that potentially there is a better spark now that has pushed my idle up. I will see how it goes after a good run over the next couple days, but test start after fitting (engine still warm) was around 1400rpm at idle and 900 when put in drive. But from the few minutes i had it on it seemed stable where as before my idle was around 750-800 but fluctuated up and down a bit.
where is the idle adjustment on these?



Made in japan. Unsure how old but very good sign.

Looks the goods from the top.

The rod from the coils in my car on the left and the rod from the new boots on the right. Old one has a slightly thicker diameter spring coil with a slightly larger radius on the spring. Rods seemed very similar. I think my old one is just so slightly heavier.

 

You may need a TPS reset, which can only be done with an OBD2 device loaded with Jaguar specific software. A dealer should be able to do it, but I'm sure someone from down under will come along and let you know where to get that reset. I don't believe your engine has any way to adjust the idle manually....although there is a way to have it done. It would require loosening the TPS on the underside of the throttle body.

 

ok so before i take it to get it done, what would be best way to check if that is likely the culprit?
i the throttle appears to ve closing properly.
i have obdii but have not played around with the tourque app yet.

i assume there is a meter in there to read throttle position.
i assume at idle it should 0%?
and foot to the floor should read 100%?

 

i think idle should be around 11% or something like that

 

Idle, warm engine, should be about 700rpm in park, and 580rpm in gear.

Throttle should be at 12.9% at idle, regardless of temp.

 

Hi Spud Maat,

Another thing to check is that you did not cause a vacuum or air intake leak while you were working on the coils. The breather hose attached to the camshaft cover becomes brittle over time and is easy to crack if you accidentally put a hand on it while working on the coils. Any air that is unmetered by the MAFS can cause a rise in idle speed and lean running.

Cheers,

Don

 

Just received a Prenco-branded coil (part number 36-8082) from FCP Euro, and although the box is labeled as "made in China", these seem to be the closest one can get, at least visually, to the made in Japan proper items. Brass bolt spacers, the rectangular thing in the dielectric material, boots that don't feel like they're made of soft cheap silicone rubber, and an electrical contact that fully spans the opening at the bottom of the coil body. I'm considering returning those Brock coils I posted previously in the thread and just keeping this one around, maybe getting a few more just to be on the safe side.

 

i remember somebody put lincoln ls 3.9 coils on and they fit decently..

fix or repair daily coils suck too but you can buy used ones easily

 

Those appear to be the real deal. Please keep us posted on longevity.

Thanks for sharing!

 

Some of you may be interested in what I'm doing attempting to convert to a more modern coil, some will think that switching from OEM coils isn't for them All of which has been previously discussed.

I purchased a FORD Coyote V8 2 pin coil for test fits and to do a trial.

The primary reason is to find a Coil that i can use with an XJ40 valve cover I am going to fit ( I prefer the look )

First test fit went surprisingly well.
*The Coyote coil is longer and sits up a little bit higher
*It is not confirmed if it fits under the X300 Coil cover
*With the boot and spring removed it sits flush
*it needs an adaptor harness made

Some pictures attached.

 

Adaptor bracket made , trimmed the boot and fully seated / installed on the plug .

coil cover fits as it should - no issues here .

i will confirm how it operates once I’ve made an adaptor look to test run it .


I understand most will want to run an oem style coil but A lot of us are not in the uk and are in USA/Australia/NewZealand where local access to this coil would be at a off the street parts store level .

if this conversion is a success I will consider offering the brackets and wiring adaptors for other people to have access .

 

I'm loving your work and watch for a positive outcome. Besides the availability, it's also a little prohibitive cost-wise here in Australia to source and order the desired black topped Japanese models. I managed to purchase 5 some time ago through sng Barratt UK though they are now no longer available. At the time without any alternative, I believe that experience cost me over $500

 

i was thinking over her in AUS a potential coil to look at maybe a coil from a barra.
if i ever remember i will take the coils off my territory, put them on the cat and see what happens.

 

What I didn’t like about the Barra coils is they didn’t have a straight forward way to hold them down . The pictures show the tube is also offset from the head with a weird kink part way down .

barra coils were my first plan though. I am to understand they have the correct plug and wouldn’t need wiring work ?