simple question, is anyone not running it on purpose and whats your thoughts?

mike

 

Uh, why?


-Ted

 

not quite the responce i was looking for, but if you want to go that route. Uh, why not? If its souly for emsissions then whats the point of having it on your race car. Im looking for people that have experimented with not running it, not a debate on the fractional power loss.


mike

 

There's a difference between total eliminating the trailings versus firing them the same time as the leadings...?


-Ted

 

i realize this ted, wheres the research on paper/dyno/street. ive had some local guys dissableing it and there telling me they cant tell either way. So basically im gonna head to the dyno and find out myself. Im in a first gen turbo so if i loose some hps thatll probably help me since this thing isnt gonna hook up anyway. Ive got this same thread going in the performance section and its getting more responces, so just move over to that one.

mike

 

Well considering it dose about 5% of the work i would say your going to loss power. Dont know why you would want to eliminate the trailing.

 

You eliminate the trailing to eliminate the possibility of detonation from bad timing.... problem is.. the plug holes will cake up with carbon and eventually kill an apex seal anyway.... Rotor houseings without trailing plugs would be great, problem is, you aint gonna find them

 

Now thats the answer i was lookin for, thank you for stating that.

 

and if you look at three and four rotors...they have three plugs instead of two

looks like you're taking a step in the wrong direction

 

Just think about the design of the engine. You have a long space where the fuel/air is compressed. You have your leading coil firing at one point and your trailing firing after. It makes sense! The shape of the rotor is not good for combustion, it is too long, hence why there is a trailing spark, so that you can combust more of the mixture. When people advance their trailing plug to about where the leading is, you get a more powerful initial combustion because more fuel/air will be burnt, but you will leave more fuel/air that is unburnt, thus making the car less effecient. I haven't done any tests, but I've heard from several people on the forum that they are getting higher power running no split, but I want to test this out, because other than emissions, the trailing plugs in stock configuration should be providing more power.

- Steiner

 

no split = perfect for NA

no split on turbo = bye bye motor

you can use 0 split to build boost (let's say under 3psi)

but even then you're pushing it

 

Thanks guys, but we can stop the discussion because YEARSOFDECAY has the best answer. 93BlackFD, there are numerous ways to build boost. Just tell me how you plan on launching your car at the track(rev it up and dump the clutch). Who cares how fast your car is on the highway, if you cant leave the line HARD(under boost) whats the point. If your using a manual trans, youd probably want to retard the timing say 20deg or so to build boost. So think of a way to cut the trailing at the line and retard the leading. MSD makes a nice box called a dis2 programmable which will due this. Hey thanks again for everyones responces.

mike

 

i could care less about redneck drag racing....

if that's your focus, get rid of the stick and get a good auto tranny

 

best answer because its correct, or the one you wanted to hear in the first place?

i dont think its gonna break anything to run whitout the trailings youre just gonna waste gas

 

i love how everyone on this forum goes on the defensive or decides to get ignorant with each other. I could care less about what kind of racing you like, especially when you call it redneck racing. j9fd3s, i guess it was what i wanted to hear, i was looking for a educated answer not someone telling me ill loose gas mileage in a rotary. For christ sake im running 1600cc injectors who cares about gas mileage. I was only looking for an easier/safer way to tune, and good reasons not to eliminate trailing.

Kind Regards
mike

 

Not everyone's on your back man. They were just letting you know that you will lose gas mileage. It's a relevant topic, and one that shouldn't be overlooked unless you have the money to not care. Please restrain the bashing of other people on the forum and accept the answers they give, and the criticism cause usually the criticism is the best advice.

- Steiner

 

Please snowmansteiner, im not the one who called it "Redneck racing". I try and be nice about every topic im involved in, but some people just have to show there asses. Ive gotten alot of support off this forum, but for everyone that assists me there are 10 to 20 who have to talk ****. Id rather just drop the whole damn discussion and move on. If i happen to offend anyone with my hatred towards there interests, i appologize.

Im not worthy
mike

 

i don't think i was being rude when i said redneck racing, that's what it is, to me, a georgian, surrounded by rednecks, mustangs, camaros, corvettes, etc

i'm simply saying, you will lose the overal effeciency of the combustion, and you will not see power gains

1600cc's get the same gas mileage as 550cc's or 100cc's....that has no effect on combustion effeciency

okay, let's stop arguing, i'll let your car agree with me

go pull your trailing plugs, now try to hit boost...post results ;-)

 

Ive been boostin it all over with no trailing plugs. For the most part on street tires, 1st 2nd and 3rd are a waste b/c it just lights up. I have just recently connected the trailing so like i said we can stop the discussion. My car loves you, and agrees with you as matter of fact it would like to have dinner with you.

POS 1st gen

mike

 

93 Black FD I understand what you mean when you say redneck racing. I live in SC on breaks, and going out and seeing some of these guys, with beat up old camaro's telling me they're from Grrrr, I can hardly understand a word they say, and they have just an absolute hatred for imports. It's actually sad they way some of them act. It is definetly not a good thing for the sport.

- Steiner

 

not hard to spin tires in a 1st gen with a decent engine setup, what size are those tires? if your car is tuned agressively, pulling your trailing will result in **** performanc

 

Not hard to turbo charge a already existing turbo car, ah. Tire size is 225-50-16 BFG. So youve pulled your trailing, you have specific test results, go ahead and post those results then. Why do you keep this thread alive, i thought i said we could stop posting now. Im running trailing ignition alright, do you just want someone to argue with? Your starting to sound like a typical 3rd gen owner.

Im not 19, and i dont own a 3rd gen...
mike

 

Once you pull the trailing plugs... you have to re-adjust the leading timing and add a hotter spark......

the trailing plugs, ,belive it or not... are mostly there for emissions, , they serve a purpose on the N/A'a, but once you start adding fuel and boost... you start tuning the car richer and richer RIGHT???? do YOU know anybody running 13 or higher on the lamba under boost????? I didn't think so.. once you start richening the mix to prevent detonation under boost... the trailing plugs become about as much use as **** on a boar.. and actually, ,at high rpms and high boost, if you get a spark right near an Apex seal..... bye bye seal....

I'm not picking on anybody, nor trying to start a fight...however, I simply know that this is fact from reliable experts!

 

There used to be an 808 with a weber fed,turbocharged 13B from Aus & he never used the trailing spark...The car still ran 9.6 @ 14??mph...