alky or c-16,c-14 vp?

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alky or c-16,c-14 vp?

Post  stanggt on February 7th 2012, 10:33 am

big cube (572) motor, want to hit that 900hp mark N/A, race car only, 1/4 mile car, some 1/8mile, ported scj Kaase heads, custom roller cam for app. carburated.
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Re: alky or c-16,c-14 vp?

Post  Barney on February 7th 2012, 10:35 am

What compression?
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Re: alky or c-16,c-14 vp?

Post  stanggt on February 7th 2012, 11:18 am

Barney wrote:What compression?
im thinking its gunna be about 14:1. flattop scj piston, zero deck, .040 gasket and 72cc head!
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Re: alky or c-16,c-14 vp?

Post  richter69 on February 7th 2012, 12:03 pm

Q16 ifyou want gas, M5 if its alky, both should get it there if the rest is up to the task
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Re: alky or c-16,c-14 vp?

Post  rmcomprandy on February 7th 2012, 12:14 pm

Q16 in my book ... getting enough alcohol through ONE carb will eventually become a problem at that level. Use two carbs with alcohol or some type of F.I. and another point of compression would be prefered with alcohol.

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Re: alky or c-16,c-14 vp?

Post  stanggt on February 7th 2012, 1:19 pm

q16 it is then, got a good friend that is a dealer about 10 miles from me. perfect bounce
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Re: alky or c-16,c-14 vp?

Post  stanggt on February 7th 2012, 1:26 pm

richter69 wrote:Q16 ifyou want gas, M5 if its alky, both should get it there if the rest is up to the task
I ran M5 in my race kart 2yrs ago, ran like a scalded dog and put on a light show at night.lol Twisted Evil
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Re: alky or c-16,c-14 vp?

Post  richter69 on February 7th 2012, 1:34 pm

there ya go..........it will work in a carb but like said at that power level it will be tough to feed with just a pair of needle and seats........my old 529 with a single adp 1050 ran low 5.70's with M5 though........ Wink and low 5.60's w M5 and injection.
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Re: alky or c-16,c-14 vp?

Post  IDT-572 on February 7th 2012, 5:06 pm

It's gonna take a set of SCJ's flowing around 400 cfm too. And the right cam.
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Re: alky or c-16,c-14 vp?

Post  KY JELLY on February 7th 2012, 6:21 pm

Do you really think the needle and seat would be a limitation Fabio? I can agree with that when I see #8 or #10 line attached to the carb bowl Smile
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Re: alky or c-16,c-14 vp?

Post  stanggt on February 7th 2012, 7:22 pm

IDT-572 wrote:It's gonna take a set of SCJ's flowing around 400 cfm too. And the right cam.
thats what Im shooting for. Im hoping Randy can hook me up as he is within traveling distance from me.
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Re: alky or c-16,c-14 vp?

Post  richter69 on February 7th 2012, 7:34 pm

KY JELLY wrote:Do you really think the needle and seat would be a limitation Fabio? I can agree with that when I see #8 or #10 line attached to the carb bowl Smile


what I been told, never done it, went injection and never looked back


John Kyle at APD is who told me to run a -8.............so I rekon its his dumbass thats incorrect on what line size to use on an alky n/s.......I run a single -6 to feed mine............ Razz
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Re: alky or c-16,c-14 vp?

Post  Race Ready Fabrications on February 7th 2012, 7:39 pm

When our season starts I'm gonna run my new bullet on c14 for two weeks, then make the switch to alky. Should be interesting to see if there's a difference. A real world back to back test......we shall see!!!
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Re: alky or c-16,c-14 vp?

Post  KY JELLY on February 7th 2012, 7:46 pm

I just don't understand the thinking that a needle and seat will out flow a #6 line . A big cfm carb will not work well with methanol , m5 or , nitro because of the carbs physical limitations .
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Re: alky or c-16,c-14 vp?

Post  Lem Evans on February 7th 2012, 7:52 pm

I doubt that the needle/seat is seeing the same p.s.i. that the injection noozles are.

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Re: alky or c-16,c-14 vp?

Post  KY JELLY on February 7th 2012, 7:53 pm

Race Ready Fabrications wrote:When our season starts I'm gonna run my new bullet on c14 for two weeks, then make the switch to alky. Should be interesting to see if there's a difference. A real world back to back test......we shall see!!!

If you use a carb on methanol you will only see the limitation of the carb not the fuels you use. The only way to do a 100% fair comparison is through the exact same induction system. I will even make this statement a cj headed engine will not run faster on gas if it does something else is the limiting factor.
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Re: alky or c-16,c-14 vp?

Post  Barney on February 7th 2012, 8:46 pm

Q16
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Re: alky or c-16,c-14 vp?

Post  rmcomprandy on February 7th 2012, 10:53 pm

KY JELLY wrote:I just don't understand the thinking that a needle and seat will out flow a #6 line . A big cfm carb will not work well with methanol , m5 or , nitro because of the carbs physical limitations .

Years ago, on a simple dyno test, we took an 1150 carb off a 482" engine and replaced it with an 850 and made about 4% more horsepower & 5% more torque. It was simply because we could now get enough alcohol through the carb to get a decent air fuel ratio for power.
Now, 4% doesn't sound like much but, starting with 800 horsepower; that is almost 35 horsepower.

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Re: alky or c-16,c-14 vp?

Post  JARHEAD58 on February 13th 2012, 7:38 am

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Re: alky or c-16,c-14 vp?

Post  Moodyblues on February 23rd 2012, 8:11 pm

So Q-16 over C-12 or C14? I checked the4 website. I always used C-12 with my DOVE headed 514. Now new combo
14-1 compression with 65cc heads maybe I need to try the Q16.
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Re: alky or c-16,c-14 vp?

Post  Barney on February 23rd 2012, 8:30 pm

Moodyblues wrote:So Q-16 over C-12 or C14? I checked the4 website. I always used C-12 with my DOVE headed 514. Now new combo
14-1 compression with 65cc heads maybe I need to try the Q16.
Just be sure you tune for Q16, it will want more fuel to compensate for the oxygen.
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Re: alky or c-16,c-14 vp?

Post  yellowhorse7 on February 23rd 2012, 8:55 pm

Barney wrote:
Moodyblues wrote:So Q-16 over C-12 or C14? I checked the4 website. I always used C-12 with my DOVE headed 514. Now new combo
14-1 compression with 65cc heads maybe I need to try the Q16.
Just be sure you tune for Q16, it will want more fuel to compensate for the oxygen.

X2. There is a fairly steep learning curve. Ask me how I know...
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Re: alky or c-16,c-14 vp?

Post  Lem Evans on February 23rd 2012, 9:18 pm

113 VP is the bang for the buck....I've seen it run with 14/1 comp ratio very well. Having said that, it may or may not with iron heads...i have not been there. You will need to jet up with 113 but not as much with Q16.

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Re: alky or c-16,c-14 vp?

Post  Moodyblues on February 27th 2012, 8:47 pm

Lem Evans wrote:113 VP is the bang for the buck....I've seen it run with 14/1 comp ratio very well. Having said that, it may or may not with iron heads...i have not been there. You will need to jet up with 113 but not as much with Q16.

Sorry forgot to say the new heads are TFS
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Re: alky or c-16,c-14 vp?

Post  BOSS 429 on February 27th 2012, 8:58 pm

Q16
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