domes? what can i run 1100ft

[monster_energy06]

ok soo i just found out im at 1100ft elevation "only ive been living here for 3 years i didnt know"....im runing 21cc domes at 145psi on supreme. can i get away with 20cc at this elevation on supereme?? let me know

Edited July 7, 2008 by monster_energy06

[jbooker82]

ok soo i just found out im at 1100ft elevation "only ive been living here for 3 years i didnt know"....im runing 21cc domes at 145psi on supreme. can i get away with 20cc at this elevation on supereme?? let me know

http://www.nossmachine.com/banshee_heads.htm

Acording to Prodesigns chart in my RMATV catologe and noss machen chart your right on the money at 145 psi with 21's at 1000 ft.

 

The Prodesigne chart shows 151 psi at 1000 ft for 20's

The noss machine chart shows 156 psi at 1000 ft for 20's

 

If your running 93 octane then I would probably go down a size. What is your timing set at. If you get some pining with the new domes you can alwasy try backing your timing off.

 

josh

[jbooker82]

And if you look at the chart most guys run 21's at sea level on pump gas and the chart shows the same psi for 20's at 1000 ft.

[monster_energy06]

http://www.nossmachine.com/banshee_heads.htm

Acording to Prodesigns chart in my RMATV catologe and noss machen chart your right on the money at 145 psi with 21's at 1000 ft.

 

The Prodesigne chart shows 151 psi at 1000 ft for 20's

The noss machine chart shows 156 psi at 1000 ft for 20's

 

If your running 93 octane then I would probably go down a size. What is your timing set at. If you get some pining with the new domes you can alwasy try backing your timing off.

 

josh

 

 

And if you look at the chart most guys run 21's at sea level on pump gas and the chart shows the same psi for 20's at 1000 ft.

 

good to know. i gess im pretty spot on to specs then... i didnt advance my timming yet... actualy just got my puller in the mail today.... soo im goin +4 soo

i think im gunna go head and start looking for 20cc dome and see what happpens tx again

[05.Banshee.SE]

And if you look at the chart most guys run 21's at sea level on pump gas and the chart shows the same psi for 20's at 1000 ft.

 

I thought anything near 160 you should run race fuel? (156 in this case)

 

I may ditch the PD Coolhead and 21cc domes I already bought because I run at sea level, and don't want to run race fuel.

[jbooker82]

It depend alot on the motor. Some guy say they run 160 with 4 deg of timing on pump.

 

I ran 19cc domes 150 psi on 90 octane with 4 deg of timing. I would be comfortable running 155 or so psi on 93 octane.

[monster_energy06]

i got told up 155 psi yur good for pump on +4 timming. i thought i was at sea level thats why i got 21cc

[05.Banshee.SE]

It depend alot on the motor. Some guy say they run 160 with 4 deg of timing on pump.

 

I ran 19cc domes 150 psi on 90 octane with 4 deg of timing. I would be comfortable running 155 or so psi on 93 octane.

 

What is your elevation?

[shanYE west]

I ran 21cc domes @ sea lvl with a stock ported motor for years.. never needed race fuel until my sickness got worse..

[monster_energy06]

What is your elevation?

from what ive been told 900-1100ft

 

I ran 21cc domes @ sea lvl with a stock ported motor for years.. never needed race fuel until my sickness got worse..

ya im sure thats not a problem. thats why i got 21cc, i thought i as at sea level.... no biggy back home is sea level i can use them for that.... ya im starting to get that sickness also

 

 

 

 

soo i guess this wraps it up ppl. im gunna try and get 20cc. tx for all yur replys

[05.Banshee.SE]

I ran 21cc domes @ sea lvl with a stock ported motor for years.. never needed race fuel until my sickness got worse..

 

F*ck it.

 

Once I get exhaust and jets I'll throw the PD and domes on too.

[monster_energy06]

F*ck it.

 

Once I get exhaust and jets I'll throw the PD and domes on too.

best mod i ever put on next to pipes. 110% worth it imho get a noss head, no stud change and one less 0-ring to mess around with ... i myself run a mod quad head but i got a good deal on it.. other then that ide have a noss head. from what ive herd dave noss is excellent to deal with

Edited July 9, 2008 by monster_energy06

[05.Banshee.SE]

best mod i ever put on next to pipes. 110% worth it imho get a noss head, no stud change and one less 0-ring to mess around with ... i myself run a mod quad head but i got a good deal on it.. other then that ide have a noss head. from what ive herd dave noss is excellent to deal with

 

I already bought the PD head and domes...and it came with all the installation hardware, so.

 

Besides, I got a killer deal on it. :thumbsup:

[jbooker82]

I already bought the PD head and domes...and it came with all the installation hardware, so.

 

Besides, I got a killer deal on it. :thumbsup:

 

Why waite. The head wont require any jetting change. :biggrin:

[05.Banshee.SE]

Why waite. The head wont require any jetting change. :biggrin:

 

I was going to throw it on with all the other stuff... I'm expecting an exhaust in about a week or two, so.

 

I kinda have this thing where I ordered TORS Elimintaor...then air filters...then said might as well do exhaust...might as well do head...I should get domes with that...and an adjustable timing plate...

 

I don't see it ending anytime soon.

 

But after the exhaust and jetting arrives (about 1-2 weeks out) it's all going on.