S2000 Under The Hood S2000 Technical and Mechanical discussions.

What Spark Plugs?

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Old 01-02-2012, 10:54 PM
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Originally Posted by Billman250
Holding the bar applies to all s2ks with a glass rear window. If you dont, the top latches pinch the top and make left-to-right cut marks towards the front of the top. The rough metal edges cause tears in the triangle are in the rear....but that is good to add.

Honda does finally make a dif fluid, but not all Honda places have it. That is acceptable. However, there is too much of a chane of Honda using the wrong fluid, and it happens all the time. The diff lasts about two days with the wrong fluid like Dual-Pump Dif Fluid.

What bar are you talking about? I'm fairly new to s2000. Also I'm a fan of denso plug so the first thing i did was replacing the NGK to DENSO (PK22PR-L11) . They both OEM plug right? Why is the NGK better than the DENSO? Can you please explain. I bought my S2k with 72k (switch to denso) and now it has 75k, do you think i should switch it back or what you think i should do?
Old 01-03-2012, 04:51 AM
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Mobil1 synthetic LS is great for the dif.

All fluids can be changed. Brake and clutch fluid are separate.

No power steering fluid, steering is electronic. This is a feature of the s2k I think is brilliant.

Any clutch that does not use an oem disc on this car to me is a bad idea. They are noisy, they have clutch buzz, and driveability sucks. They make the car very tin-can like a riced out civic. There's no need for that kind of bite in a stock s2k.
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Old 01-03-2012, 04:55 AM
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I GUESS denso is alright. I dont use them because I know how well the ngk's hold up.

Most important is torque. It would suck to think you did your car some great service by changing the plugs, only to have them back out, destroy the coil pack, lean out the mixture, have the spark plug tip burn white hot till it melts into the cylinder destroying the engine.

It happens all the time. Be 100% sure you know those plugs are tight enough.
Old 01-03-2012, 12:53 PM
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Originally Posted by Billman250
I GUESS denso is alright. I dont use them because I know how well the ngk's hold up.

Most important is torque. It would suck to think you did your car some great service by changing the plugs, only to have them back out, destroy the coil pack, lean out the mixture, have the spark plug tip burn white hot till it melts into the cylinder destroying the engine.

It happens all the time. Be 100% sure you know those plugs are tight enough.
Yeah.. I def regret going a higher stage. OEM is perfect for me but since I sold my 540i and needed to drive this was the only thing around me. Someone told me to get new spark plug seals. Can I find those on Majestic-Honda? Part number?
Old 01-03-2012, 12:56 PM
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If you mean spark plug tube seals, you dont need them, unless someone pulled the valve cover and damaged them on re-install.

They are not disturbed during spark plug replacement.
Old 01-03-2012, 09:31 PM
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Originally Posted by Billman250
If you mean spark plug tube seals, you dont need them, unless someone pulled the valve cover and damaged them on re-install.

They are not disturbed during spark plug replacement.
Perfect. I was told to get these. I am replacing my valve-cover gasket soon, should I also replace the seals as well?
Old 01-04-2012, 04:48 AM
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I would not touch them unless you can inspect them and know they are needed. Install is not easy. Many people nick the cover with whatever tool they use to remove them. They also wind up not in all the way.
Old 04-21-2016, 11:05 AM
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Originally Posted by Billman250
Spark plug Honda part# 98079-571BH.

This will be an NGK plug number PFR7G-11S, gapped to .039 made for the s2k. This is the difference between a store-bought plug and a dealer plug.

As far as idle issues, it's not a dirty IAC valve per say, it's a sticking shaft. Time alone will do this to the shaft, not dirt. Remove the motor portion from the valve portion and see for yourself. When you try to spin the shaft, it will be kind of stuck.
BACK FROM THE DEAD lol

The NGK's are pre gapped right?
Old 04-21-2016, 05:42 PM
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The NGK plugs with the "-11" suffix are pre-gapped to 1.1mm (0.044").

http://1.bp.blogspot.com/-b3CPDLGmNL...park+plugs.JPG
Old 04-22-2016, 08:45 AM
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Originally Posted by windhund116
The NGK plugs with the "-11" suffix are pre-gapped to 1.1mm (0.044").

http://1.bp.blogspot.com/-b3CPDLGmNL...park+plugs.JPG
so what should I do? I don't really trust my self to gap them lol.

I have the same plugs in right now and the car has been running greeeaaaatttt
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