fast89stang

iTrader: (2)

Car ran 6 passes Sat. Ranging from 6.60-6.51 in 3 hours. 60fts were anywhere from 1.41-1.44. The reason I changed from gas to E85 was consistency. On gas I ran a best of 6.28 with 1.35-34 60fts consistently. Temp was in the low 80-high 70 range. I have the new pro bracket radials on, car was hooking. It will run 6.3s in good air, but slows BAD when air is warm. I guess when it gets in the 90s I will be running 6.8s. LOL I have got to figure this thing out SOON, or its getting traded for a gas carb.

fast89stang

iTrader: (2)

fwiw, it would run 6.4s all day long in 80 degree air on gas, probably high 6.3s.

windmill

iTrader: (4)

I had to deal with mine for a while,, what pro systems said was ok,, I had to change jets a lot smaller to make it run like it did on 93 fuel.. I ran out of time at the end of the season.

awake1630

First who did you carb?

2nd. do you have a AFR gauge. Whats the reading on it.

Whats the temp of the car in the burn out box? When you stage? At the end of the run?

What heat range plugs?

Mark Sullens is the man. He has done 2 different carbs for me.


So who did the carb.

93camaro_zzz

iTrader: (13)

Yeah, first I would make sure you are optimized on e85 as far as timing and afr.

After that checks out, what motor is in your car? Is it a SBE LQ4? If so, that is probably your problem. I have found out that you really need a setup to take advantage of the benefits of e85. e85's benefits are it's octane rating, and it's specific heat value. On a naturally aspirated motor, you really need a setup with lots of compression to benefit from e85. It is not uncommon at all for someone with (for example) a SBE LS1 - H/C setup to lose power when switching to e85.

Turbo guys like me love it because it helps with resistance to high IATs, and also the octane rating.

fast89stang

iTrader: (2)

Mark done mine. he is trying to help get it right. Dont get me wrong, he hasnt abandon me yet. He may, since he cant dumb things down enough for me to understand. lol Car doesnt have a gauge. It goes in burnout at 160, stage at about 170, just like he wanted. I have tried it several different ways, and this seems to work best. It just falls off way to much in the heat. If it was gas, I would definitely pull some jet out of it. When the air was cool it ran great. 6.38@107 with 1.38 60ft. Still not as fast as gas, but about as consistent.

fast89stang

iTrader: (2)

Mine is a LY6 with heads milled .020. It has about 9.8 compression. And it had enough azz to run 6.38 when the temp was in the 50s, but as soon as we hit higher humidity and low 80s it runs 6.50s. If the air cools a bunch thru the night it will drop et much faster than gas. So if it can run 6.5s in decent air, it has to be jetting or??? to be able to make it run the number. I was not looking to gain et with this swap. I was looking for consistency. Thats why I changed.

ZONES89RS

iTrader: (25)

Higher compression and boosted applications eat that **** up. Also EFI. But a engine that can run in **** water pump fuel? I'll never run e85 for that with a carb.

fast89stang

iTrader: (2)

Too many people here do. And when they say its consistent, thats what wins the type of racing I do. If this carb wont do it, then it will get a alky carb. I know it will do it. Old 302 would run 6.781st pass and 6.77 2nd pass every trip down the track with less compression than this motor. Yes, it might work better with compression, but i know it can be made to work with this compression. Too many 6.8 cars at the track running the same numbers pass after pass. And the reason is .....3.10 or so for non ethanol premium vs 1.79 for E85.

Nickelndime

I hate to hear that. I switched to e85 while doing my ls swap. I just got it running and hope to race it this weekend. It's bracket raced only so I was hoping e85 would be more consistent than pump gas.

Nickelndime

I agree, up until going Ls, I've ran all my bracket raced sbc engines (even low compression) on alcohol with great consistency. Im hoping e85 is atleast a nice middle ground between gas and alky. We'll see how it goes Saturday

dogsballs

You have no guages and not dialled in the carb? I wouldn't be expecting miracles

My e85 carb from eric at horsepower innovations is awesome. Lots of benefits inc cooler intake, lower engine temps and wider tuning window.

Get a afr guage, soo cheap. Find out where it likes to be abd also the timing. Compression is your friend, get as much in there as you can

ZONES89RS

iTrader: (25)

I'm doing something wrong then. All my setups have always been consistent as hell on gasoline.

fast89stang

iTrader: (2)

Consistent for me is going 7 rounds to the finals. No way pump gas can be as consistent as alky or e85. You might get close, but when you are running against a 5.50 door car on alky, you can bet your bottom dollar they will run dead on pretty much. And still, E85 and alky is still much cheaper. I fill up a 5 gallon jug for 9.00-9.50, gas was 20-25.....much cheaper when you race every weekend and also, lots of us double enter where we can, or run 2 classes. Youre not going to be as consistent on gas doing that. No way. Especially if you go many rounds and youre car is run back to back with no cool down. If it was as easy with gas, everyone would be doing it instead of switching to alky . Ive seen many alky guys run 5.650, 5.651, 5.650, 5.652 (my buddy) He won about 40 k or so last year. So it is more consistent. It takes dead on to win rounds against tough competitors, Close aint gonna get it.

VLS1

Didn't you run a 950 ultra carb? Still the same carb just changed the metering blocks??

Pump gas will beat E85 with a low comp street engine all day long, unless you are clueless with tuning and it saves your engine from a detonating mess of a tune. Then of course it will work better!

Once again Dave Mizell went how fast with pump gas and less than 10:1 comp?

fast89stang

iTrader: (2)

Again, this is not about how fast. I bracket race the car every weekend, spring to fall. Consistency is key. It is a completely new carb. Its been 6.38, so I know it can run, just needs to find consistency. I will get closer to that Thursday night. Round to round here guys....thats what matters. I have seen guys lose races by hundreths of a second because they couldnt trust the car, Thats the benefit of E85 or Alky. Makes you trust the car if you get it right. Yes, you can do it on gas somewhat, but you wont double enter the car and stay as consistent without lots of guessing. My buddy can run several 5.64s or so in a row......He wins A LOT......thats what it takes.

ZONES89RS

iTrader: (25)

Lol, I got lap my **** like I'm on a oval track and it runs consistent as hell. But then again, 9something to 1 compression probably helps.

fast89stang

iTrader: (2)

ok.....I'll tell my buddy to switch back to gas. LOL.

windmill

iTrader: (4)

You keep talking about your buddy be so consistency.. im sure he just do first time he put alky on it,,, it take time,, lots of testing. Your not going to nail the best time out when you just change stuff and I don't know of any carb builder to do that. what I seen so far you need an gauge to go by, and also read the plugs. i'm not bad mouthin anyone here.. im just sayin you have to have tuning stuff to go by. what about your buddy whats he tune by?

fast89stang

iTrader: (2)

hes got a gauge. Plus he is big buddies with his carb builder. George Rupert. From what I have seen from most carb builders they send them out with "safer" tunes in them. Even Rupert told him that he could lean it out some more and run better, but George wasnt going to do that. So, What its going to take is a tnt to try and figure it out. I know it takes time, I spent 1.5 years on my old gas carb. LOL. Im just gonna take a box of jets and go one way or the other and see what it likes. Im sure I will find the sweet spot.