Spark plugs for the 93 unleashed tune....what is the part number?
- Thread starter Expygator
- Start date
If you bought the NGK plugs from Unleashed, LTR7IX-11 (1 step colder) (or LTR6CI-11 (OEM heat range)). Most likely you got the 7IX.
Motorcraft plugs should be SP534, doesn't matter what tune/level of tune you are running. Most say that OEM gapping is 0.030, which is exactly what you would need in a tuned SHO.
Motorcraft plugs should be SP534, doesn't matter what tune/level of tune you are running. Most say that OEM gapping is 0.030, which is exactly what you would need in a tuned SHO.
bpd1151
Active member
The Motorcraft SP534's are the exact replica of the NGK's.
They are just rebranded for Ford's use.
Don't flip the extra money for the NGK's, just order the SP534's & you'll be good to go.
I think I saw them selling online for as low as like $4 each.
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They are just rebranded for Ford's use.
Don't flip the extra money for the NGK's, just order the SP534's & you'll be good to go.
I think I saw them selling online for as low as like $4 each.
Sent from my SM-N920V using Tapatalk
The SP 534 is stock plug the exact plug that NGK calls LTR6CI-11 stock #97177. It is NGK's best plug. It's double precious metal meaning it has iridium on the electrode and the ground strap. Which gives it the 100k service life compared to the single precious metal plugs such as the Iridium IX which is also a really good plug which NGK said is good for 40-50k.
I called NGK recently because I was contemplating changing my plugs. But there is a problem for me.
The stock replacement LTR6CI-11 is gapped by NGK at .032" and is stock heat range. They don't offer 1 or 2 step colder in the laser oem double iridium plug. The 6 designates the heat#, 7 would be 1 colder. the 11 is the gap designation.
If you want 1 step colder you downgrade to the LTR7IX-11 stock 6510. The problem is that plug is gapped by NGK at .044" and NGK told me they recommend only gapping down a maximum of .012" or you risk weakening the weld of the ground strap. Then maybe it breaks off in the cylinder. So that means that they only recommend gapping that plug down to .032"
So anyone running the LTR7IX-11 which is a recommended part for popular 3 bar tunes and gapped at .028"-.030" are running a little less than NGK recommends for that plug.
So if you want to gap down that far I'd run the stock plug but then it's not colder. Or you run the iridium IX line gapped down to a minimum of .032" and you can be colder but also have an inferior plug. But be careful when gapping down you don't go too far and have to go back up...You still over extended it in that case.
I called NGK recently because I was contemplating changing my plugs. But there is a problem for me.
The stock replacement LTR6CI-11 is gapped by NGK at .032" and is stock heat range. They don't offer 1 or 2 step colder in the laser oem double iridium plug. The 6 designates the heat#, 7 would be 1 colder. the 11 is the gap designation.
If you want 1 step colder you downgrade to the LTR7IX-11 stock 6510. The problem is that plug is gapped by NGK at .044" and NGK told me they recommend only gapping down a maximum of .012" or you risk weakening the weld of the ground strap. Then maybe it breaks off in the cylinder. So that means that they only recommend gapping that plug down to .032"
So anyone running the LTR7IX-11 which is a recommended part for popular 3 bar tunes and gapped at .028"-.030" are running a little less than NGK recommends for that plug.
So if you want to gap down that far I'd run the stock plug but then it's not colder. Or you run the iridium IX line gapped down to a minimum of .032" and you can be colder but also have an inferior plug. But be careful when gapping down you don't go too far and have to go back up...You still over extended it in that case.
As my fellow colleagues have stated above,the Motorcraft SP-534 is initially a rebranded version and is made by NGK and essentially its the same spark plug,just follow this thread to get an in depth discussion on the topic on hand. http://www.ecoboostperformanceforum.com/index.php/topic,5649.msg89426.html#msg89426
I found it quite interesting that the Motorcraft SP-534 plugs have a two year warranty compared to its counterpart NGK-97177 which comes with a one year warranty. Z http://www.oreillyauto.com/site/c/search/Spark+Plug/03435/C0334.oap?model=Taurus&vi=5184963&year=2014&make=Ford
These guys say the ITV22s are one step colder as well.JMR76 said:
https://www.horsepowerdirect.com/itv22-denso-spark-plugs-one-step-colder-fitment-focus-st-ecoboost-mustang-mazdaspeed3/
SHO WHO? SHO WHAT? Zat's WHY. 
There was a discussion on the ITV22's a while back. Not sure if they last all that long, have to ask wasinger for an update.
http://www.ecoboostperformanceforum.com/index.php/topic,4247
crash uses (or has used) the ITV22's, hope he will chime in!
There was a discussion on the ITV22's a while back. Not sure if they last all that long, have to ask wasinger for an update.
http://www.ecoboostperformanceforum.com/index.php/topic,4247
crash uses (or has used) the ITV22's, hope he will chime in!
Here's a classic discussion on the Denso's. Z http://www.ecoboostownerforums.com/index.php?/topic/247-new-replacement-updated-spark-plug/ http://www.globaldenso.com/en/products/aftermarket/plug/tough/spec.html
