Lower Octane Fuel

njk53 · 01-22-2014, 04:33 PM

I was wondering why the NHRA doesn't allow/approve VP, Sunoco, etc to manufacture a leaded race fuel that is in the 95 to 98 octane range. I know in our situation with a 9:25:1 compression ratio motor, our car would run much more efficient on a lower octane fuel. There has got to be a lot of stockers out there that have lower than 10:0:1 CR and would also benefit from a lower octane fuel. I don't think it would be that difficult to check or am I wrong?

Pistol Pete · 01-22-2014, 04:55 PM

I am thinking the same.

VP C9 might be that fuel You & i need.

Bob Bender · 01-22-2014, 05:47 PM

We use vp-C 9 in 4 cycl stocker. Works great.

7423 · 01-22-2014, 08:16 PM

Quote:

Originally Posted by Bob Bender

We use vp-C 9 in 4 cycl stocker. Works great.

What is the octane of the C9 and what does a 5 gal pail cost??
I just priced C10 in SoCal at $72-$82 a pail. Totally obscene!!
Two years ago it was $50 a pail out here.

Bob Bender · 01-22-2014, 08:38 PM

Quote:

Originally Posted by 7423

What is the octane of the C9 and what does a 5 gal pail cost??
I just priced C10 in SoCal at $72-$82 a pail. Totally obscene!!
Two years ago it was $50 a pail out here.

I think it was like 53.00 a gal from VP last year, octane is 98.

njk53 · 01-23-2014, 09:33 AM

Is the C9 VP Leaded or Unleaded?

Greg Reimer 7376 · 01-23-2014, 09:58 AM

We have a couple of '68 Chevelles with the 327/250-245 horse engine. that engine,even after decking the block and the heads and arriving at a comfortable chamber size, is an actual 8.5 c/r. It runs fine on 91 octane 76 union right from the pump. No real difference in Et or MPH is obvious from C-12. It probably shouldn't do this according to conventional wisdom, but Tony Janes did this when bracket racing the car. I always hunted down C-12 when I went out, but there's apparantly no need for 108 octane fuel in an 8:1 engine. Problem is, the 76 wouldn't pass fuel check, so when Pomona comes, out it goes and the good stuff has to go in. I don't think we would try this with the 275 horse engine.

7423 · 01-23-2014, 10:42 AM

My car @ 9.1 CR is .05 faster on Arco 91 pump gas then on the legal fuels VP C10 or Rockett 111. I believe that well over half of the stockers would run just fine on pump gas at $4.00 a gallon instead of the rip off prices we are forced to swallow for the $13.00 and up per gallon fuel on the "accepted" list. But I guess thats politics...............

Signman · 01-23-2014, 11:18 AM

VP C-9 is 97 octane Unleaded with NO Oxygenates.
As close as you can get to pump gas with NHRA approved fuel from VP.
It is cheaper (around $65 with the can) is all gasoline not as caustic as other VP Fuels.

Keep in mind it is unleaded, if using older heads without hardened valve seats you will have issues.

B Parker · 01-23-2014, 12:39 PM

I use C-9 all the time. My car likes it better than the rest of VP's fuel. I have had my fastest pass with it. Just have to tune it a little. BP

01-22-2014, 04:33 PM	#1
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Lower Octane Fuel I was wondering why the NHRA doesn't allow/approve VP, Sunoco, etc to manufacture a leaded race fuel that is in the 95 to 98 octane range. I know in our situation with a 9:25:1 compression ratio motor, our car would run much more efficient on a lower octane fuel. There has got to be a lot of stockers out there that have lower than 10:0:1 CR and would also benefit from a lower octane fuel. I don't think it would be that difficult to check or am I wrong? __________________ Nelson Kowal Stock 345

01-22-2014, 04:55 PM	#2
Pistol Pete VIP Member Join Date: Oct 2003 Location: Punta Gorda Isles, Fl. Posts: 1,626 Likes: 3,403 Liked 779 Times in 209 Posts	Re: Lower Octane Fuel I am thinking the same. VP C9 might be that fuel You & i need. __________________ "Pistol" Pete Dutko

01-22-2014, 05:47 PM	#3
Bob Bender VIP Member Join Date: Jan 2009 Location: Maryland Posts: 1,733 Likes: 1,599 Liked 459 Times in 90 Posts	Re: Lower Octane Fuel We use vp-C 9 in 4 cycl stocker. Works great. __________________ Bob Bender 144 O/SA 2010-2012 National Record Holder

01-23-2014, 09:33 AM	#6
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Lower Octane Fuel Is the C9 VP Leaded or Unleaded? __________________ Nelson Kowal Stock 345

01-23-2014, 09:58 AM	#7
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 705 Times in 219 Posts	Re: Lower Octane Fuel We have a couple of '68 Chevelles with the 327/250-245 horse engine. that engine,even after decking the block and the heads and arriving at a comfortable chamber size, is an actual 8.5 c/r. It runs fine on 91 octane 76 union right from the pump. No real difference in Et or MPH is obvious from C-12. It probably shouldn't do this according to conventional wisdom, but Tony Janes did this when bracket racing the car. I always hunted down C-12 when I went out, but there's apparantly no need for 108 octane fuel in an 8:1 engine. Problem is, the 76 wouldn't pass fuel check, so when Pomona comes, out it goes and the good stuff has to go in. I don't think we would try this with the 275 horse engine.

01-23-2014, 10:42 AM	#8
7423 Senior Member Join Date: Dec 2006 Posts: 639 Likes: 0 Liked 1 Time in 1 Post	Re: Lower Octane Fuel My car @ 9.1 CR is .05 faster on Arco 91 pump gas then on the legal fuels VP C10 or Rockett 111. I believe that well over half of the stockers would run just fine on pump gas at $4.00 a gallon instead of the rip off prices we are forced to swallow for the $13.00 and up per gallon fuel on the "accepted" list. But I guess thats politics...............

01-23-2014, 11:18 AM	#9
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: Lower Octane Fuel VP C-9 is 97 octane Unleaded with NO Oxygenates. As close as you can get to pump gas with NHRA approved fuel from VP. It is cheaper (around $65 with the can) is all gasoline not as caustic as other VP Fuels. Keep in mind it is unleaded, if using older heads without hardened valve seats you will have issues. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"

01-23-2014, 12:39 PM	#10
B Parker Senior Member Join Date: Sep 2009 Posts: 849 Likes: 980 Liked 2,336 Times in 464 Posts	Re: Lower Octane Fuel I use C-9 all the time. My car likes it better than the rest of VP's fuel. I have had my fastest pass with it. Just have to tune it a little. BP