Piston RING GAP – HOW and WHEN to adjust it + GAP CHART – BOOST SCHOOL #6

33 Comments

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2. Muito obrigado, ótimas explicações, continue compartilhando seu conhecimento. Deus abençoe

3. The first 2 minutes sound very familiar in the Subaru EJ257 engine family 👀

4. I just mounted a grinder with a cutoff wheel on my bench and used that. I also gapped my rings slightly loose for NA and slightly tight for low-boost turbo application. From what I've heard we are still using very conservative values to determine ring gap when most modern engines are pretty happy to run much tighter.

5. I been try 00.45 blow by When idle car White smoke,once we make clerance 00.38 The engine no more blow

6. Okay wow this video was very educational thank you

7. lul me who gapped the rings with a cutting wheel on my grinder and chamfered them too on my first home rebuild, engine is running strong tho , wish i had seen this first

8. Too bad u have u touched on ring orientation as this is als very important and information online is different on every source

9. you explain complicated concepts simply, your the best by far at what you do, well done !!!

10. Is that boost chart in inches or metric?

11. The additional Heat of a compressed Gas is NOT A RESULT OF FRICTION …… Heat is Energy per option of movement of a Gas Particle …… and when you Compress a Gas the reflections of the Gas Particles get additional moving Energy like a Tennis Ball reflected at tennis racket swing against his movement. The Tennis Ball the lost this Energy by friction to the Air …… what Gas Particles are don't do.

12. I'm actually a bit surprised, they are not made gapless, by overlapping gaped with rotational shift. It's seem obvious and easy conception to me.
    But seems it's not very necessary.

13. Would adding a higher lift camshaft warrant a ring gap change? Probably a dumb question but I want to know for my rebuild, boring the engine .030" over and porting/polishing the heads as well if that makes any difference for a Ford 4.0 OHV v6 engine

14. u can turn the handle faster on the ring filer, his point was the heat will mess with the rings temper, but as long as u keep the ring cool itll b fine it would go real fast in running water

15. 4G @ 10,000 RPM’s !!
    https://youtube.com/watch?v=L2Sw-_J7uSc&feature=share

16. a good example to show compression adding heat is those compression fire pistons used in survival packs to start a fire just by smacking a piston in a tube with something flamable like cloth inside the tube.they have glass ones great for showing compression creating heat

17. At 6:00 in, you basically copied total seals ring gap chart

18. U are the best👌

19. .5mm = .020"

20. WHY NOT RUN AN ELECTRIC SUPERCHARGER OFF THERMOCOUPLES IN THE EXHAUST STREAM?

21. We always use an electric bench grinder with the smoothest stone we have. works great but opposite of the manual cranking grinder, you need to be extremely light and careful you don't remove too much, as it goes fast. I've done this on all my Honda Jseries Performance engines whether our builds (daily driver j35a7 400-600whp Nitrous Turbo builds) or customers 400-1000hp engine builds. HalferLand Performance

22. What a good video!!!!
    i am building an engine and i just have the service manual and not too much idea of what im doing !!

    Thank!!!!

23. Go ecoboost!!!

24. You can even lose the coolant in an engine and it will eventually seize due to the pistons being too tight in the bore . Once it cools it'll run once again and the pistons don't break .The pistons will always end up too tight in the bore before the ring gaps butt together.

25. Most manufacturers use the same ring gaps for their turbo and non turbo models so your theory is totally BS. The idea is to tune for zero knock and the ringlands don't break.

26. Broken ringlands are caused by the shockwave from detonation, not from ring gaps too tight.

27. Hi, I have one question, my piston rings have 0.100 mm, will it cause a problem with compression. Thanks

28. also depends what material you choose

29. be careful not to ruin your rings people 😅

30. Duratec engines 👍

31. Richard Holdener, hot rod guru, likes .007" per in of bore for turbo engines

32. i think another key is to install piston ring gaps in opposite directions to increase distance of gas escape route at lower temps. make them longer by the time the gas tries to escape so when the piston is receiving pressure from the gas till the bottom dead end the gas is still trying its way put of the piston rings. helps pistons achieve working temp earlier and keeps dirts out longer too, no?

33. I file on both sides seems to keep it 100 percent streight but you have to deber both sides

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