Tuning and spark plugs

[Chainlube]

I think that machine went on strike

Just think if that was the first and you didn't know better.

 

[Zingzing29]

I like to use a old jug with the head bolted to the cylinder with a piston with a wood dowl and in the wrist pin hole glued emory cloth to the piston dome and I use a drill gun like a drill press to shape it.

 

[Zingzing29]

Just think if that was the first and you didn't know better.

What will that do if the squench isn't dressed up. I know you get better thermal efficiency and cooling from a good polish

 

[Chainlube]

It will still run. The swirl will be lopsided though.

 

[weefek]

I got this one this time I've had one like this too. I never used it either because the squish is weird and not symmetrical. That head from a new Zeda triple 40 cylinder replacement.

that's a weird looking combustion chamber....

 

[weefek]

@Chainlube is that an unused head you have laying around? The mating surface being casted is so friggen bad lol

 

[Zingzing29]

Ah the swirl I was wonder what that was called I have limit knowledge of burn patterns and what they mean why it's doing that and how to correct the problem.

What I was actually think with the spark plug was the rear port is to low in comparison to the front transfers and not getting g short-circuiting but the opposite I don't remember what that's called but can be really bad if it get a chance to blow by into the transfers. I read about it once.

 

[DAMIEN1307]

@Chainlube is that an unused head you have laying around? The mating surface being casted is so friggen bad lol

Made with real genuine Chinesium...lol...lol.

 

[Zingzing29]

that's a weird looking combustion chamber....

The squench isn't uniform

 

[Zingzing29]

I run the gt5 head with the underside of 40% squish. It's done me well and several reworks. I think it's cracked now or getting a leak on one of the studs