I get what your saying for me if I do burn through a set I order a new set on FCP and I'm pretty much out shipping costs. If I was tryna build a car where there is no expense spared PR would be the coil of choice they bring some nice contrast to the engine bay as well.
Technical Eldor coils vs PR Coils
- Thread starter General.Massacre
- Start date
Coils will not make you go any faster or give you more power unless there was something wrong with your previous ones.
Its about reliability and to be able to run bigger gaps at high boost levels without misfires and without prematurely burning out the coils.
With the pencil style coil I'd occasionally get a misfire now and then at around 22 psi, had it as high as 28 psi since installing the PR's
and cant remember having one ever since.
PR's are just more reliable and will never let you down unlike pencil coils but they work fine when they are working properly.
I think it's funny how right now everybody is on the Eldor bandwagon because they're so great and so much more reliable than the Delphi...
Couple years ago it was the Delphi bandwagon because they're so great and so much more reliable than than the Bosch...
Couple-couple year ago it was the Bosche bandwagon because they're so great and so much more reliable than the Bremi that it replaced in the M52/S52...
Truth is these coils are all the exact same design and spec and reliability/output will be identical unless there was a QC problem. This just happens to be the lowest bidder to provide the coils to BMW. The only two design changes that exist were to the coil tip YEARS ago when they changed to flat top plugs, and the addition of a part number with a little metal RF shield in a poor attempt to reduce electrical noise.
Prediction: BMW switches back to Bosch and it becomes the next best thing because they're so great and so much more reliable than the Eldor...
Couple years ago it was the Delphi bandwagon because they're so great and so much more reliable than than the Bosch...
Couple-couple year ago it was the Bosche bandwagon because they're so great and so much more reliable than the Bremi that it replaced in the M52/S52...
Truth is these coils are all the exact same design and spec and reliability/output will be identical unless there was a QC problem. This just happens to be the lowest bidder to provide the coils to BMW. The only two design changes that exist were to the coil tip YEARS ago when they changed to flat top plugs, and the addition of a part number with a little metal RF shield in a poor attempt to reduce electrical noise.
Prediction: BMW switches back to Bosch and it becomes the next best thing because they're so great and so much more reliable than the Eldor...
Never had missfire issues with eldors with Bosch I had issues maybe they were just old.
It's really a reliability of setup and use in the hands of the owner issue, which seems to be conveniently ignored in the conversation (and has been the point). Generally don't increase complexity unless you have a need to solve a problem. If one has higher expertise and willing to do so ... can't beat it. But reality - a lot of average folks ... many which come here for advise, don't need to hear "I installed 3 sets and they work" because that's really not the issue.
Filippo
Filippo
Just stating that there are no issues with the PR coils if installed correctly as it was suggested there was.
Just because its simple does not mean its reliable as these were designed to run at stock power level or close to it and not when running double or more power.
PR's where designed to run at any level so why would one limit the chances of misfires and possible engine damage whilst trying to save a few bucks on coils that were never designed for the task.
Run any coil one likes but don't come crying when your next misfire causes a ring land failure
Just because its simple does not mean its reliable as these were designed to run at stock power level or close to it and not when running double or more power.
PR's where designed to run at any level so why would one limit the chances of misfires and possible engine damage whilst trying to save a few bucks on coils that were never designed for the task.
Run any coil one likes but don't come crying when your next misfire causes a ring land failure
Literally the only issue I have with the PR coils is that they're a pain in the ass to change plugs with. If I had a solution to that, I'd gush their praises.
No real difference other than spark and idle stability. And theoretical coil longevity.
Mine have been pretty bulletproof.
That said, my stock coils did very well. I bought the PR set at a heavy discount that made them about $50 more than OEM at the time, and was hugely impressed with the R&D done by PR and V8bait. If I had needed to pay retail I might have thought about it a little more.
But yeah, need a more friendly coil mount that's not right over the leads/plugs. What a PITA.
No real difference other than spark and idle stability. And theoretical coil longevity.
Mine have been pretty bulletproof.
That said, my stock coils did very well. I bought the PR set at a heavy discount that made them about $50 more than OEM at the time, and was hugely impressed with the R&D done by PR and V8bait. If I had needed to pay retail I might have thought about it a little more.
But yeah, need a more friendly coil mount that's not right over the leads/plugs. What a PITA.
And I'm just stating that installation and ownership is not as straightforward for some people as clearly evidenced by posts and issues requiring getting new parts over the years. My advise was leave it alone and run a simple stock setup, unless one is solving a problem or has more advanced experience.
This kind of retort really necessary? You seem to have issue someone offering a different point of view which does not completely line up with your own point of view.
Filippo
Well @fmorelli I just call it how it is, its not a point of view as I'm talking from personally experiencing it on my own motor.
These pencil coils are just plain garbage outside of stock to mild application, of course they work to a point.
I've seen a number of motors now that have failed and they all have a common issue.
Pencil coils
Stock Motor
e85
High boost
high timing
I also know a number of stock motors that run pr coils and have seen no failure running big hp where normally it should not
be possible what they are doing.
If you want half a chance of a motor holding together get rid of the weakest link and that is the pencil coil pack.
Anything over 21psi or higher you should be looking for an upgrade as its basically a ticking time bomb, which path someone chooses is up to them.
These pencil coils are just plain garbage outside of stock to mild application, of course they work to a point.
I've seen a number of motors now that have failed and they all have a common issue.
Pencil coils
Stock Motor
e85
High boost
high timing
I also know a number of stock motors that run pr coils and have seen no failure running big hp where normally it should not
be possible what they are doing.
If you want half a chance of a motor holding together get rid of the weakest link and that is the pencil coil pack.
Anything over 21psi or higher you should be looking for an upgrade as its basically a ticking time bomb, which path someone chooses is up to them.
Is the OP sure he has actual misfires or does he mean timing pulls?
If running methanol I'd definately recommend a stronger coil than stock, more so for water and methanol. It takes alot more energy to ignite methanol than ethanol and even more so than petrol. Water will make it harder still to get the burn started.
I personally run R8 coils so I can replace them cheaply outside the US.
The problem is misfire issues aren't always coil or even plug related. You really need to try and narrow a misfire down by changing one variable at a time.
If running methanol I'd definately recommend a stronger coil than stock, more so for water and methanol. It takes alot more energy to ignite methanol than ethanol and even more so than petrol. Water will make it harder still to get the burn started.
I personally run R8 coils so I can replace them cheaply outside the US.
The problem is misfire issues aren't always coil or even plug related. You really need to try and narrow a misfire down by changing one variable at a time.
Absolutely. And it is why my point is exactly spot on. Thanks for making that clear.
Filippo
EDIT: Thanks your finding and reading my post. Unfortunately, Spoolstreet is no longer a neutral platform where we can have honest discussions on subjects and products freely.
For this reason I have deleted all information I posted on the forums.
For this reason I have deleted all information I posted on the forums.
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I mean eldor coils are stock on cars that make 550 -600 + hp so not sure why running higher boost on them would be an issue. hasn't been for anyone I know or myself
If car A is doing 550 on pump gas and car B is doing 550 on exotic fuels then it's really apples and oranges...
You said your only running 21psi that's considered mild boost, start cranking 25psi up to 30psi it might handle it or might not.
How long the coils last is a lucky dip
On the single turbo we where cranking 28 psi and all we saw was misfires as soon as we tried my pr setup we where able to crank it up to 35psi with .022 gap with no issues on one step colder plugs.
If its working for you then stick with it, it really depends on your goals.
Buying eldor coils and finding out its not cutting it or buying pr and never have to worry about it again
How long the coils last is a lucky dip
On the single turbo we where cranking 28 psi and all we saw was misfires as soon as we tried my pr setup we where able to crank it up to 35psi with .022 gap with no issues on one step colder plugs.
If its working for you then stick with it, it really depends on your goals.
Buying eldor coils and finding out its not cutting it or buying pr and never have to worry about it again
They offer a set up that goes over the intake manifold. I was looking at swapping to their set up a couple of weeks back. I was happy to see they have an intake side set up. As plug changes with the original placement made me wonder about difficulty. I'm due for coils and thinking it might be worth it in the long run to swap.
Picture from their website.
