Valve Tuning

[M A N T I S]

I have tried searching the forums here to see if anyone actually knows how to adjust the valves, but just ended up finding vague answers. Can someone give me a good setup to go off of to actully get the car running sound? Someone mentioned tighting the valves till they bottom out and loosen 7 clicks or turns out?? ... well... they dont bottom out... so i have no way to gauge how far off of adjustment i really am???

[gred_cz]

apperantly even tho they spin infinitely,theres just 18 settings,so screw 18 or more times to the bottom,and then 7 up,thats what i did and it works just well

[GiPPO]

Do not settle for the valve setting you see in every guide. the 18-7 method just puts it into a position when it doesn't tick (isn't compeltely broken :D). But it's not the optimal. I just fine tuned mine (with racing parts) and I dared to screw a bit more on them and it runs a LOT better now. I dare to think there's no best valve+carb setting. Especially as you can buy new parts for your car.

[MrVein]

Originally posted by -EUTW- GiPPO:

Do not settle for the valve setting you see in every guide. the 18-7 method just puts it into a position when it doesn't tick (isn't compeltely broken :D). But it's not the optimal. I just fine tuned mine (with racing parts) and I dared to screw a bit more on them and it runs a LOT better now. I dare to think there's no best valve+carb setting. Especially as you can buy new parts for your car.

yeah makes sense. valves too tight and they wont close, giving less compression. too loose and youll probably end up with damaged lifters.

[gred_cz]

whats the ideal setting then?

[GiPPO]

Go to the airfield, bring some food, beer and tools... and find out :D That's what I did. For starting, the 18-7 method is fine I guess. (or start the car and screw each of them until they tick, then scroll it back with 1, I think it's the same)
For me - if we take the "1 away from ticking" as reference, I screwed all of them +5 (haven't tried a lot more of options, but it was a LOT better with racing parts - hardly went over 120km/h, now it's could go over 160km/h, but the strip is too short for that). edit: oh and it stalls less on low rpm - I needed to rev the engine a lot to get the car moving, now it has enough torque to start
Then again, one of them is exhaust, one of them is intake, so you can make them different I guess. TBH, I have no idea how it should affect the engine, so for me it's pretty much a trial and error. Probably all pistons need the same setting.

[gred_cz]

i see,in my case i did usual 18-7,carb set to 14.0/1,and it can go around 180(my guess,speedometer ends by 160 after all lmao) quite easy :D,i have the aftermarket cooler and carburetors,exhaust is stock,didnt tuned the engine at the mechanc

[M A N T I S]

which way are you guys turning 18 turns btw? mouse wheel forward or back? just wanted to make sure lol

[gred_cz]

18 to the bottom,so back

[M A N T I S]

So i tried the 18-7 method and my valves now make a ticking noise and my car takes a decade to hit the rev limiter. solution?

[Lokeyday]

They really should make it less of a mystery.... this must be why my engine is over heating....
Don't know if it helps. I did 25 back 13 forward...not ticking. Maybe I should push it a few more. Also. I think when you save and quit it will "reset" them. I f'd with this for a good while.(So they had to be waaaayy wrong) Then saved and quit. Did the whole 25-13 thing.

[epa720]

https://youtu.be/gfwkxRlAuSI

[Lokeyday]

What screw is the intake valve? Im gona guess right... thoughts?

[Dayemon]

Also remember your gear ratio is going to ultimately determine your 1/4 times on the strip over anything else.

[Kit]

https://www.youtube.com/watch?v=RkhdfhGsANk

[jerv]

My understanding was that 7 ticks was "a good starting point" rather than "THE optimal setting". I went with the "bottom out, then up 7" and managed a ticket for 208kph in a 100-zone.

However, it has issues. Basically, if the tach hits 6k and I'm not already in 4th, I can kiss traction goodbye despite the 3.700 gears. REALLY peaky!