NO EFI in EMC finals. ??

[horsewidower]

Re: NO EFI in EMC finals. ??

So...when do we get that "ignore" button?? ;)

[SpiderGearsMan]

Re: NO EFI in EMC finals. ??

c'mon , I don't offend
geek comes over to my side of the fence and runs all my little buddies off , so if I catch him being a tad silly , I POUNCE

I also stomp on uneducated theorum

[revolutionary]

Re: NO EFI in EMC finals. ??

but speedster says that never works hahahah

see lots of excuses , but cold start driveability is not a part of the contest

for all the bluster , no results , as predicted
dulcich did the efi/carb test years ago and the carb won then too

and yet, the highest horsepower racing engines all run EFI.... strange ???

naturally aspirated???? ihra pro stock making 1900hp - carb

top fuel dragsters, blown alcohol dragsters, fuel dragsters - all mechanical injection

best efi I've heard of is 3500hp with big turbos

best efi naturally aspirated????

[dieselgeek]

Re: NO EFI in EMC finals. ??

best efi I've heard of is 3500hp with big turbos

You don't have tractor pulls out there Daryl?? :D

[SpiderGearsMan]

Re: NO EFI in EMC finals. ??

nyuk nyuk nyuk
swamp buggy racing gets bigger tv ratings

[dieselgeek]

Re: NO EFI in EMC finals. ??

nyuk nyuk nyuk
swamp buggy racing gets bigger tv ratings

guess I didn't realize that the question was "which is better at TV ratings, EFI or Carbs?"

last I checked, guys like Petty and Lynch weren't interested in carbs for their turbo engines. And MFI is a heluva lot closer to EFI than a carb. But frankly, the whole blown/nitro or blown/alky combos have been around for a long time. Kinda old news.

[SpiderGearsMan]

Re: NO EFI in EMC finals. ??

oh , so now absolute mechanical injection is efi ? where do you install the MAF ? think burning 15 gallons of fuel a run will make it through an emissions test ?
at WOT - DO you REALLY NEED EFI ?

[dieselgeek]

Re: NO EFI in EMC finals. ??

oh , so now absolute mechanical injection is efi ? where do you install the MAF ? think burning 15 gallons of fuel a run will make it through an emissions test ?

none of that made sense. I've never installed a "MAF" on any car I tuned...

at WOT - DO you REALLY NEED EFI ?

You probably never will. And that's fine!

But feel free to show this guy how to make 3000hp with a carb:

[JeffMcKC]

Re: NO EFI in EMC finals. ??

Fastest Top Dragster out right now I think has EFI on it N/A

I don't see the huge diff between EFI and Mech as far as your pushing fuel threw a orfice with Pressure one of these days someone will make a big enough EFI Injector to pass that much fuel and it will make its way there.

[JeffMcKC]

Re: NO EFI in EMC finals. ??

Ever wonder why they wont let EFI in any of the Pro Categories if it is so slow????????

[revolutionary]

Re: NO EFI in EMC finals. ??

I think there is absolutely zero question that EFI is easier to deal with on a boosted application, especially anything above 20psig. The question that was basically formed here is in regards to naturally aspirated engines at WOT which is what the EMC deals with. Will properly tuned efi make more average or peak power than a properly tuned carb? Both have the ability to electronically tune the spark curve so that is moot. it is then just a question of how the fuel is delivered.

I'd be very interested to see or do a comparison with a generic hot rod engine using similar intake manifolds for EFI/carb to see what's what. Maybe I can talk Hunkins into letting me do a story on such a thing.

I absolutely love my megasquirt (EFI Source EMS!) that's on my LT1 firebird, but would it make more power with a carb??? who knows. I believe the main problem that we run into what comparing apples is the availability of good intake manifolds. So far, about every LS1 that I've seen converted to a carb made more power than when it was injected. However that also included a major intake manifold change. Sure would be nice to figure out what manifolds work best for EFI to level the field.

Example: A couple years ago we ran my friend's 352 chevy ( 4.155 x 3.25) with a regular vic jr and it made 520hp no problem. We swapped intakes to the Accel single plane EFI intake - looks like a vic jr but with injector bungs - stuffed injectors in the bungs and ran it with the carb again and it lost almost 40 hp. Basic dimesions were the same but the injector bungs protrude down into the runner so far it half blocks off the ports. Major work needed to bring the power back to the Vic level. No comparison with out of the box parts.

[JeffMcKC]

Re: NO EFI in EMC finals. ??

Well maybe the wrong path is being taken

http://www.wilsonmanifolds.com/shop/index.php?l=product_detail&p=110

or spray above like a CFI unit

Its all about fuel control and I would think the CPU would do a better job and if not its not a fail on it it is with the programing

[horsewidower]

Re: NO EFI in EMC finals. ??

Is it an atomization issue? Carbs can be very effective at WOT. Injectors are very dependent on fuel pressure, and pintile design. I think most folks do a set it and forget it with those issues. I found that a higher pressure worked well with the alcohol. And I may try a different set of injectors than the RCs I currently have in order to get better atomization. Injector dynamics??

I think if I was going to do an EMC entry with EFI I'd go to an IR manifold with a set of "weber" injector/butterfly set ups. Than I could vary the injector stack length to tune in the induction system.

[SpiderGearsMan]

Re: NO EFI in EMC finals. ??

don't forget low cost
cost factor is huge

[min301]

Re: NO EFI in EMC finals. ??

Like split Dominators are cheap...

I promise, we will see a winning EFI motor in EMC soon enough.
Then the carb guys will start bitching...