TWIST head by MSD?

[Polish jet pilot]

Hi All,

Did the vortex creating design of the TWIST head actually worked? I am able to get a new head like that and I would like to have your input on this. I am not sure how the "twisted" design can be compared to standard domes in terms of detonation, compression, etc... please advise.

Andrew

 

[Big Kahuna]

Ocean Pro had something similar before Twist came out with that. Dont know if it actually worked. But OP stuff typically did what it said.

 

[Foximus]

I'm a clown.

 

[Polish jet pilot]

I thought more surface area = less heat retention...? E.g. my SUDCO 701 pistons have small "bumps" on the top to have more surface area....

B.K. interesting info on the ocean pro head... I have one in my 550 kawi, but it is a standrad design...

So anybody actually used these heads?? Opinions? Problems?

 

[BombThreat]

one thing ive been wondering is how would you check the squish with spiral domes?

 

[Big Kahuna]

The idea behind the dome design, at least by OP was that it funnelled the fuel charge towards the plugs to try and get the maximum burn.

 

[SUPERJET-113]

I know a old skool tuner that used to tune for a lot of Pro's here in Havasu "back in the day" and he loves those Twist heads by MSD.

I'll have to ask him why next time i see him..

 

[Foximus]

I'm a clown.

 

[Polish jet pilot]

Hopefully his company's head design was good :barrel:

 

[Foximus]

I'm a clown.

 

[Polish jet pilot]

I was thinking about the way the mixture enters the cylinder and I agree that to some extent but in regards to impeding the velocity, I was thinking that the gasses already enter at certain speed, then they are compressed towards the head. When the piston reaches, or just before that, TDC, the mixture is ignited. My idea was that this specific design promotes equal mixture combustion and downforce.

Also, it could have been a part developed for a specific two stroke engine(?) back in the day.

 

[Foximus]

I'm a clown.

 

[Big Kahuna]

Ken at OP was a hack.

He was a rich boy who ran his mouth about his "superior products" and loved copyright infringement laws.

OK. His products did what they said they would. They worked.

 

[Foximus]

I'm a clown.

 

[Polish jet pilot]

Could we continue the discussion about the product as such? The owner or whomever will not make my motor run better, but maybe his head will do... any other comments? Why nobody from the pro builders chimes in? Interesting topics on compression, combustion, heat transfer right here!!

 

[BombThreat]

Foximus- when did you become a pompous azz? Just seems lately youve become a expert at almost everything on here.

 

[SUPERJET-113]

:haha:

 

[Foximus]

I'm a clown.

 

[Big Kahuna]

Foximus- when did you become a pompous azz? Just seems lately youve become a expert at almost everything on here.

damn, reminds me of somebody, just cannot put my finger on it.

 

[vitaly]

damn, reminds me of somebody, just cannot put my finger on it.

the extractor exhaust guy? ancake: