Spina ZC / ZS [DR14ZC]

Looks like it's just like your imprints.

Very Good

Sep 24, 2021

Used for SR400FI (Type 5).
I bought it to try it out because I see a lot of Reviews that say Torque up, which is a medium to low speed.
The first impression is that the vibration around 3000 rpm becomes large compared to the normal rpm, and that the
From there, it revs up to Torque fully through 4000 RPM.
I opened Axel to the Large fine-scale.
In NORMAL, it feels like the rotation is going up and up and up.
Here, the rotation goes up like a dodo and rage.
At best it's a powerful acceleration feeling, at worst it's a vulgar acceleration feeling, it's as if you're driving a MOTARD.
I guess it depends on whether you feel comfortable with this or not.
There is also Demerit, it seems to increase the heat generation of the Engine.
The Oil Temperature Meter rises faster than usual.
If you are going to use it permanently, you may need to take measures such as cooling Parts.

Looks like it's just like your imprints.

Helpful?

Excellent

Jul 25, 2021

After BuRiskZC

There was a place of thinking, once removing the BRiskZC which was installed by the handling Shop, it decided to install JAPANPlug.

[How is it used?
Tandem's leisurely short touring is the main attraction.
The only time I rev it to high is when I'm trying to get out of a crowd of cars. It runs quietly on both highways and mountain passes.

How was your experience with it?
It has been installed for 17 months from April 2020 to July 2021, with 25 days of actual operation and 3184km of actual mileage.
When I first installed it, I was impressed by the silky and fluffy increase in RPM, the throttle from around 0, and the drastic decrease in After Fire. I was feeling that the loud After Fire had returned.
"Durability is 20,000 kilometers." But I think it is the same time of year as other manufacturers.

How did it compare to other products?
NGK D with OEM specification (R) If I compare it with 8EA... I could feel that the dimension is completely different.
Expensive "for Race parts." So it's not surprising.

[Points to note]
It seems that there are some cases of poor screw accuracy or damage during use, as you may know.
I removed it to see if it was the right fit and it was undamaged.
Because it is a for RaceSpark plug made in foreign countries, I think that it is necessary to swallow it and to use it by managing it by yourself.

Helpful?

Excellent

Apr 18, 2021

Awesome Engine blow up!

I installed it on my 2017 FI 。 I was skeptical, but I immediately went to Touring.
The first thing I felt was the difference in the blowing up to 7000rpm, the Limiter kicked in very quickly.
It blew up just as well in 2nd gear. 。 I am amazed at the difference that I have never experienced before.
I will be looking at the condition of the Plug periodically for durability.
I've been using Iridium plugs, but haven't been able to experience them enough to compare them to NORMAL.

Helpful?

The Torque feeling has been improved.

Excellent

Mar 15, 2021

First of all, I feel that the Idling sound became thicker from the moment I applied the Engine.

When you start driving, you will feel the Torque feeling has been increased.

It wasn't a drastic change, but I could feel the difference enough.

Helpful?

Poor

Feb 22, 2021

crumpled

It arrived in a very messed up outer box.
I don't mind a little bit, but I was worried because it was a Spark plug, which is a broken product. The content was Large sturdy? It was.