Nice,,how hard is it to change plugs on the vr30?

 

I was going to ask the same thing. I judge auto repair difficulty by how many curse words are uttered (including the C-word that makes my wife give me the look), how many things on the car that are unrelated to the repair but are in the way that get broken during the process, how many Band-Aids are needed, and whether or not you scratch a fender with a belt buckle, tool, or jean rivet/zipper.

 

Hey Pill, you will never know, until you try. When you start using those words, then we will all know.

 

Exactly!!

 

On the second revision of my methanol tune from Z1. Busy weekend and raining today so I can’t pull new logs. In went the new spark plugs. View attachment 118619

View attachment 118621
View attachment 118623

Bro why would you get some BMW NGK spark plugs that are not made for the VR30DETT engine? The center electrode on the new spark plugs you have which are SILZKBR8D8S inferior to the OEM NGK Spark plugs mainly due to not having dual twin tip design and the center electrode is 1.0mm thich which will thus create a weaker spark compared to the OEM NGK spark plugs DILKAR8K8G whic have a 0.6mm center electrode.

If I were you I would swap back to the OEM spark plugs only because of all the reasons I listed above and your giving the dealership a great reason to void the warranty on replacing your engine if it ever has issues down the road. But I do see you're running methanol so that don't mattery anyways lol.

 

I mean outside of it not being OEM for warranty purposes its a non-issue, you get way more benefit of having a correctly gapped spark plug and the correct material (iridium and hot/cold design) being the biggest factors rather than it being a single or twin tip design. Since he is tuned running colder plugs makes sense in this application.

Oh ooh,,I changed mine to autolite iridium xp because I couldn't wait an all they had in stock at auto stores near me,,always wondered if I hurt myself/week later I put denso iridium in my sons g37

How can you determine heat" or cold" of an individual brand sparkplug?

Probably a good read on the subject matter of hot/cold plugs.

https://ca.gsparkplug.com/shop/spar...gltm_term=b&gltm___ga=GA1.2.793235143.1689648953[/URL]"]The Green Spark Plug Co

 

Oh ooh,,I changed mine to autolite iridium xp because I couldn't wait an all they had in stock at auto stores near me,,always wondered if I hurt myself/week later I put denso iridium in my sons g37

 

@Boxy recommended a slightly cooler NKG plug for my Q50.

SILZKBR8D8S

 

How can you determine heat" or cold" of an individual brand sparkplug?

 

I usually hold them in my hand.

 

More directly-are autolite iridium xp any good?

 

80% of the job is moving the intercoolers out of the way and mounting them. The rest is pretty easy. Make sure to torque to the specs listed in the FSM.

 

80% of the job is moving the intercoolers out of the way and mounting them. The rest is pretty easy. Make sure to torque to the specs listed in the FSM.

Well now...

 

I was just thinking that your throttle bodies look brand new,,and accessible

 

Personally, NGK's are the way to go when stock, and would only use the NGK plug manufactured for the particular application. Now, depending on the plug condition, no problem in changing the heat range, or if modified would assume the HKS or NGK racing plug would be the way to go.

I'll try and make this short. Years ago on the Kia Optima, 2.0T, normal is @ 18 psi, called NGK and inquired if there was another plug that would be satisfactory for that application, and the 2007 BMW Mini Turbo plug was recommended. Did an install, went for a drive, a couple of hiccups never seen before, car idle off, and on the way home up popped a CEL, tach stopped working, no signal so A/C shut off. Back at garage, checked code CKP sensor, so installed a set of OEM NGK plugs and car was fine.

Called the dimwit at NGK, explained what happened and they stated they've see a lot of problems when plugs were installed in other than the recommended applications. Guess they should practice what they preach.

 

You know on kia/hyundai 3.3t they speak of hotter"plugs on jb4 website because of spark blowout",,found this interesting,,

 

Yup, just another Korean piece of junk, just like the 2.0T, 2.4 N/A, millions committed suicide, but with 24 lbs in a 3200# car, a lot of fun while it lasted. The 2.0T #3 was a problem as were the Denso OEM plugs, at least when they changed to the NGK, better longevity. Don't have many good things to say about the Kia/Hyundai product line.

Just trying to learn all I can about the Q50.

 

We are all combinations of our collective experiences,,just like experiences with either skinny girls or thick ones,,,

 

Kinda off topic, but has anyone heard of NGK's new spark plug lately?
Ruthenium?

Is this something that is compatible with our VR30?

 

Just looked at these and emailed NGK since they don't list a compatible plug for the VR30DDTT. Per their Lead Technical Service Rep, The LKAR8BHX Ruthenium plugs are identical in spec to the OEM DILKAR8K8G Laser Iridium plugs making them interchangeable. I plan on trying these when I change mine (probably in the next couple weeks).

 

You think your off topic?,,lololol,actually they sound like best plugs out today,,,imo

 

How do you like working with Z1 on the tune? Would you recommend?

 

Z1 is phenomenal. Great customer service and super friendly. Fast shipping and great product support. They’re not always the cheapest (always priced well though) and if there are any issues there’s no need to worry. Been doing business with them for 20+ years.

Jon (the owner) has been tuning my car. He always provides great feedback and assurance that my car is in the best hands. The tune is strong!

 

If I forgot to mention it - @Boxy prescribed these plugs be gapped to 0.024

 

Gapped to 0.030. That’s what my stock plugs were gapped to. Is it worth the effort to repeat the job?

 

Ruthenium HX™ Spark Plugs - NGK Spark Plugs

Ruthenium HX High Ignitability spark plugs for NGK are designed for maximum durability and performance in today’s highly efficient engines.

ngksparkplugs.com

 

What boost pressure are you seeing?

 

Peak 20psi, levels out at 18psi

 

I'd go lower. If anywhere @ the 15 psi, I'd leave it there, but up to 20, I'd say it's borderline, hit or miss.
You could always leave it and if there is a misfire then bring it tighter.

 

I'd go lower. If anywhere @ the 15 psi, I'd leave it there, but up to 20, I'd say it's borderline, hit or miss.
You could always leave it and if there is a misfire then bring it tighter.

Eff it. For 2 hours of work I’m not going to risk it. Will get it knocked out tomorrow. @Boxy’s a very reputable resource on this platform so I’m gonna follow his instructions to the “T”. Thanks @Turbonut 👍

 

Wow,,that is EXCELLENT INFO ON SPARKPLUGS!

 

My neighbor gave me a set of the laser iridium plugs after his Q50 was flood totalled and I installed them in my sons G37, they seemed to be excellent, and I am driving with the autolite iridium xp in my Q and everything seems a- ok

 

That is good, I am sure your son and the G37 were happy lol.

On the VQ37VHR, the OEM Denso plugs are: FXE24HR11. On my G, I installed: DF8H-11B with NGK coil packs when I did my gallery gasket overhaul. I think it is tough to beat Denso and NGK top tier iridium spark plugs.

 

Agreed,,coil pks are invisible warriors under the hood an you never know they exist/UNTIL THEY DIE...

 

Spark plug change round 2 as I didn't gap them correctly on the first go. NGK Iridium plugs SILZKBR8D8S gapped to 0.024 per @Boxy and @itsecmgr@gmail.com. Thanks for the info guys! Plugs torqued to 14 ft-lb, coilpacks torqued to 62 in-lb per our FSM. This install looks like a lot but it's really not. Please post here or PM me if you have any questions👍

 

It hard to imagine you will see any gains or how big a spark it will produce with such A low gap of 0.024. Even of the high horsepower builds on the Nissan GTR forums they keep the stock plugs and the stock gap as it suitable for all power levels. Nissan GTR stock gap is 0.032 which is the same as stock VR30 plugs. The most I have seen people lower there gap to is 0.028.