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Toilet VS carb. #2579743
11/18/18 02:32 AM
11/18/18 02:32 AM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline OP
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rowin4  Offline OP
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gulfport, ms, west mi
Whats you experience ? will be using alcohol or e-85 - 572 cube engine.


it's ok to butt heads, just don't do it with a butthead
Re: Toilet VS carb. [Re: rowin4] #2579749
11/18/18 02:45 AM
11/18/18 02:45 AM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
mopar
rb446  Offline
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UK
Not a 572 but my mates 540 '68 Cuda w/-1's runs a toilet on alcohol and I believe he picked up around 1/10th over the carb set up.


1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
Re: Toilet VS carb. [Re: rowin4] #2579776
11/18/18 10:17 AM
11/18/18 10:17 AM
Joined: Jan 2003
Posts: 9,961
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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Frostbitefalls MN (Rocky&Bullw...
Throttle resposnse with an injection system is unreal. Fuel is pilling up on the intake valve at idle due to VERY rich idle mixture to offset no accelerator pump. There is no power loss due to a carbs need for some vacuum to function, so there is a bit of extra power there. With any injection it saves a lot of fuel to have a Primer Plus system to run on gas for warmup and getting to and back from the run. I just installed a system with the 1 gal tank. I am glad i did. The 1/4 gallon tank is too little run time for my liking. I am expecting to save about 10 gallons of fuel on an average two day race. Thats about $35 worth.

Last edited by gregsdart; 11/18/18 10:20 AM.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Toilet VS carb. [Re: rowin4] #2579945
11/18/18 08:02 PM
11/18/18 08:02 PM
Joined: Jun 2009
Posts: 121
Cleburne,Texas
scrapmetal Offline
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scrapmetal  Offline
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Cleburne,Texas
I picked up a few tenths.Try running smaller nozzle jets than Rons suggests.I had a 511 cud,714 lift cam 272/278 @.050,with a o 1/2 pump and went down from 38 to 36 and picked up 2 more tenths and didn't milk my oil.You could smell the ally in the oil but it was cleaner.I ran 1120 to 1140 egt at the end of the 1/8th.3080lb car 5.60 123mph.120 60 ft.Don't idle unless you are warming it up then pull the lean out to raise the idle to warm up and keep you from washing out your cylinders.The Wal-Mart brand of wd40 has less water and I use to spray it down the toilet to help dissipate moisture!AEvac is a must

Last edited by scrapmetal; 11/18/18 08:04 PM.
Re: Toilet VS carb. [Re: scrapmetal] #2579979
11/18/18 09:36 PM
11/18/18 09:36 PM
Joined: Jan 2003
Posts: 9,961
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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gregsdart  Offline
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Frostbitefalls MN (Rocky&Bullw...
Originally Posted By scrapmetal
I picked up a few tenths.Try running smaller nozzle jets than Rons suggests.I had a 511 cud,714 lift cam 272/278 @.050,with a o 1/2 pump and went down from 38 to 36 and picked up 2 more tenths and didn't milk my oil.You could smell the ally in the oil but it was cleaner.I ran 1120 to 1140 egt at the end of the 1/8th.3080lb car 5.60 123mph.120 60 ft.Don't idle unless you are warming it up then pull the lean out to raise the idle to warm up and keep you from washing out your cylinders.The Wal-Mart brand of wd40 has less water and I use to spray it down the toilet to help dissipate moisture!AEvac is a must

To add to this warm the motor to 210 or so to heat soak the engine, oil, and trans . these setups lose heat so easily you will have no problem being at 180 to 190 for the run. Alky motors like heat. Lean it out any time you can to and from the line, warmup. The oil will stay clear and fresh if you do. Be sure you use oil known to be alky compatible. For the end of the day, Always shut fuel off, wait for the lines to drain into the cylinders for a minute or so, crack the throttle and crank with ignition on. Wait a minute and Do this till it won't fire any cylinders. Then you know you have done what you can to clear fuel and water out of the cylinders. Use Klotz top end lube or similar. 1 qt to a 55 gal drum of alky. Fogging the motor with marine fogging oil isn't a bad idea either, especially if you look at the cylinder bores at the end of a season!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Toilet VS carb. [Re: rowin4] #2580181
11/19/18 02:02 PM
11/19/18 02:02 PM
Joined: Nov 2003
Posts: 121
St. Peters MO
S
speedfreek Offline
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speedfreek  Offline
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Posts: 121
St. Peters MO
Tried using a Terminator on alcohol and it didn't improve anything except my 60' times.
I went back to race gas and my 1050 dominator.
So much easier on race gas.
588 B-1

Re: Toilet VS carb. [Re: rowin4] #2580185
11/19/18 02:12 PM
11/19/18 02:12 PM
Joined: Jan 2005
Posts: 1,766
Keymar, MD
DusterKid Offline
top fuel
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top fuel

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Keymar, MD
A fellow racer I race with, he runs a chevy started with race gas and carb (950 I think) that was custom build to his engine specs. Switch over to an alcohol carb (another 950, pretty sure, custom built to his specs). He picked up a few small numbers in 60' and maybe 3-4 hundredths in the 1/8. He switched to ron's toilet over the winter and picked up another 3-4 hundredths in the 1/8, but said throttle response is unreal with the toilet. That was all on track data. This past winter he freshened up his combo and dyno'd it with the gas carb, alcohol carb and toilet all on the same day. I forget the actual numbers but the gas and alcohol carb where within 10-15hp of each other and the toilet made just a little more, but he said the torque curve was better with the toilet. Each combo will like things differently but if the carb either gas or alcohol are tune properly they will preform just about the same IMO.

Re: Toilet VS carb. [Re: rowin4] #2580465
11/20/18 01:57 AM
11/20/18 01:57 AM
Joined: Jan 2006
Posts: 43
Otsego, mi. by Martin 131 stri...
JT612GTX Offline
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JT612GTX  Offline
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Otsego, mi. by Martin 131 stri...
Toilet definitely takes some time to fine tune but throttle response is better, gotta have the primer plus for sure and id suggest using a vacuum pump!!


86 Daytona - 612/ glide - 2400lbs - 8.60 alot more left
71 S/G Challenger - 469/glide - 2800lbs - 9.20s and tuning
70 Challenger - mild 440/727 - 3475lbs - 10.96 best
70 GTX - future quick 16? more $$$$$$
Re: Toilet VS carb. [Re: rowin4] #2580485
11/20/18 03:08 AM
11/20/18 03:08 AM
Joined: Jan 2003
Posts: 9,961
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
master
gregsdart  Offline
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Frostbitefalls MN (Rocky&Bullw...
I agree on having a vacuum pump. Not only does it provide some hp, but helps reduce any water vapor left inside the motor when you go to put the car away for the day or the next race. I think the Important thing to do is when shutting down for the day the motor should be real warm (210?)to make sure alky and water are in vapor form so they get drawn out by the vacuum pump.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky






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