Common Problems - Blowby / Smokescreen Issue | Honda S2000 

Thanks for sharing

You’re welcome!

Will do!

Thanks will do.

That will be in another video 😉

@@DIYGuysvideo Looking forward to it! Will probably follow your guide to do my own. Edit: just did a autox yesterday on 255 square Conti ECS 340 TW tires, and blew huge smokescreens on 2/3 runs. Everyone thought I blew my motor. Consumed 1/2 quart of oil in those runs, and had to stop after the third cause I was out of oil to fill it up with (only had a 1/2 quart bottle left). Newly installed catch can was about half full so in a way, I'm relieved I'm not burning oil in some other way. The forums have said you have to be pulling big Gs on the track to get the smoke screen, but even on street tires at a 50 second autox course it can definitely happen. This is now #1 on my priority list and I'll be recommending it to anyone who does any kind of performance driving, whether that be autox or track.

I plan to do my own, waiting on your video.

Thanks for sharing!

@DIYGuys did you consider just changing the valve cover to a 04-05 AP2?

I performed the modification on my 08 so I was already running an improved valve cover.

How much oil did your engine use before you modded the valve cover? Do you track the car or just normal driving?

I ended up going with the K20 PCV myself. Not sure if it’s doing anything but theoretically it should

@@DIYGuysvideo It's a bit better and a better designed part.

Might just be AP1 problems if you have an AP1. I doubt you would experience this issue on the street, even if you are driving hard.

Hahahahaha

Thanks! Timing chain is designed to last for the life of the engine so no change.

@@DIYGuysvideo thank you for your quick reply, I had been told it should have been changed at 100k miles, so I was nervous of daily driving the car hard.

Well that is definitely not in the shop manual. The chain will stretch over time but the timing chain tensioner should compensate for that.

Haha I cut the video but after I check the other side

@@DIYGuysvideo I guess my car is not having this issue cuz it needs a driver mod first 😂

I actually ended up using the K20 PCV which has a similar straw. I’m not sure if it will help alone but it could be interesting to test that.

I was doing 105 when he passed me haha. Pretty sure he broke a record and did a 1:52 www.speedsf.com/blog/2020/3/3/speedsf-challenge-february-22-2020-round-1-thunderhill-raceway

Yessir. I actually ended up using a K20 PCV in addition to the modification but I’m not sure how helpful it was.

@@DIYGuysvideo it is more free flowing?

It’s not really about flow, it just has a long straw so it should be less likely to suck up oil

I would if I were you.

Already did 😎 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WkPH67U4UC8.html

Oh I meant, will you be making a in-depth tutorial on the valve cover mod?

That is true. From what I’ve read there is little benefit to running catch cans on a naturally aspirated motor that supports fuel injection. It is much more helpful for direct injection motors. The drawback to running catch cans in an open system is that you will 100% smell it. I know because I drove that car in the video on track 😉

@@DIYGuysvideo Turbo DI is where it helps the most from cooking the crap on your intake valves. I just like the thought of an air only air intake....

Mainly using powerful magnets to collect shavings while drilling and after. Also using a blind hole deburring tool. Followed by thorough flushing... No guarantees but seems to have worked well for a lot of people, we’ll see.

No. If you have oil consumption on the street you have other issues. Most likely just an AP1.

Based on the research that I’ve done the issue lies in the manufacturing process used for the AP1 Honda S2000. The final engine honing process was different for AP1s vs AP2s. AP2s used a deck plate and AP1s didn’t. This basically leads to some warping in the cylinders which allows oil to get past the piston rings during normal driving. This is why AP2s just simply don’t burn oil during normal driving.

@@DIYGuysvideo so there's nothing to do to cure AP1 oil consumption... thanks for the reply

You could technically rebuild the motor and overbore or sleeve the block but it’s not worth the money.

@@DIYGuysvideo I assume crank vents don't help either.

If you have the valve cover modified professionally then no. If you modify it yourself there is some risk you introduce which I’ll go over in another video.

@@DIYGuysvideo From what I'm seeing the downside could be leaving metal debris in the valve cover which would be messy. Other than that it's beyond my knowledge.

Like generally or in the context of the issue in explaining?

DIYGuys in general

Not sure to be honest. Don’t have much experience with super chargers but I know catch cans can be recommended for boosted applications.

@@DIYGuysvideo Thanks for the replies.

Yessir

Soon

Yes but it won’t help much at all.

I would say very reliable, especially if you get an AP2 that doesn’t burn oil. Lots of mechanical enhancements with the AP2.

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It depends on the track and skill level. I’ve gotten faster recently and also I haven’t been to Thunderhill East in a while. This issue doesn’t seem to happen at all for me at Laguna Seca or Thunderhill West.

DIYGuys I feel like that is a part of the reason why but not all the reason.

@@Udancearoundme He wasn't pulling enough G's in the specific corner before so it wasn't happening. It largely happens in chicanes when the car is pulling hard G's turning right, then hard G left as you can see in the video @0:59. It forces the oil into the valve cover where it wasn't before then gets sucked up by the PCV and into the intake. It could also be from stickier tires allowing him to have more G's in corners as well. It doesn't happen on every track, just more consistently in a R/L chicane

@Cesar i agree with what your saying but I use to roll in a group of s2000s. 1 out of the 4 would smoke. We would follow each other on track and that one car became consistent on smoking. I’ve also chased down other s2000s that smoke while I did not .

None of y’all had catch cans?

yes i do track all you have to do is click my name

So filling the oil to the maximum suggested by Honda is too much oil?

@@DIYGuysvideo like i said you may disagree etc imo

@@DIYGuysvideo also have you installed a baffle in the oil pan?

@@DIYGuysvideo well i guess the best argument i can bring up is. how much good do you think that last diamond is doing if it's just burning with the fuel. your not burning a half quart at the same turn on a 20-25 min run