Freestyle ada domes?

[jamesgunter68]

does anyone run 33cc domes?
if so how much of a difference is it from 37cc?
im running a bb 781

 

[Freakrider]

That would require more octane then pump gas in my opinion...

 

[jamesgunter68]

i know that
i would run 110 if i changed to them

 

[littlepimp1981]

man good question im wondering the same thing im running 37cc right now and want to go to 34 or 33cc's....want more low end but i dont now if going 33 to 34cc will help

 

[NVJAY775]

Check your compression and call ADA. They will dial you in on what size you can run. Also, if you are not running it wot, pump gas is OK. But if you keep it pinned for a while detonation meltdown may occur. So you may have to get a bit higher octane, but I'd check with your builder too, just to be safe. I have an extra set of ADA 760 33cc domes if anybody is looking. Also a good idea to know what your squish is. So to get it all in order. Call builder first, then maybe ADA depending on builders recommendations. Your builder should know your squish, if not it's a very easy measurement for anybody to do. Powerfactor told me how to do mine and it's a cakewalk. End of confusion. 33cc domes available.

 

[jamesgunter68]

Check your compression and call ADA. They will dial you in on what size you can run. Also, if you are not running it wot, pump gas is OK. But if you keep it pinned for a while detonation meltdown may occur. So you may have to get a bit higher octane, but I'd check with your builder too, just to be safe. I have an extra set of ADA 760 33cc domes if anybody is looking. Also a good idea to know what your squish is. So to get it all in order. Call builder first, then maybe ADA depending on builders recommendations. Your builder should know your squish, if not it's a very easy measurement for anybody to do. Powerfactor told me how to do mine and it's a cakewalk. End of confusion. 33cc domes available.

price?

 

[chriselmore_1]

Id talk to your engine builder first

 

[NVJAY775]

price?

I'll hold them for you NP. But give the builder a ring first and see if this is the ticket. Shoot me a text when you find out what's up.

Id talk to your engine builder first

X2

 

[orangefinger]

Depending on your porting your compression/dome size will change as well as your altitude, we are running 31cc at 4500 Feet with 91 Octane and 33cc at sea level with 91 octane

 

[NVJAY775]

Depending on your porting your compression/dome size will change as well as your altitude, we are running 31cc at 4500 Feet with 91 Octane and 33cc at sea level with 91 octane

Totally true. Everybody has a different set up. I'm also same elevation, but 31cc domes and 165 psi. Porting is different in our motors. (Chris's is better lol) I'm working a deal on some 27cc domes now to get me to 195 psi, so my pfp will run right. Higher elevation is a biotch!

 

[jamesgunter68]

im running 37cc at 185 psi
i sent jetmaniac a pm
shoot me a text or a pm i dont have your number anymore

 

[chriselmore_1]

I'm pretty sure those jm bb motors are setup for a real right squish

 

[Liquid-6]

Depending on your porting your compression/dome size will change as well as your altitude, we are running 31cc at 4500 Feet with 91 Octane and 33cc at sea level with 91 octane

I have 33's in my ski now and than them just fine in TX on pump gas. Made about 190psi. Here in CO its makes about 160psi, so I will be going smaller.

 

[BruceSki]

I have run 33's on a stock port 61x motor. WOT everywhere no problems.

Pretty sure I have 34cc domes on my jetworks 771. I could be wrong though.

Both on 93 octane sunoco. WOT without issues.

 

[stefan]

The JM/blue engines is cranking some high comprission numbers Chris is running 205 on pump gas and have heart that blue's freak have 240 psi dont nov if this is true my ovne 718 is att 195 and i wot sometime