i would have it on a switch....i dont race around all the time i would only use the n2o when i am racing or wanna have a lil fun.Quote:
Originally Posted by xtreme 2
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i would have it on a switch....i dont race around all the time i would only use the n2o when i am racing or wanna have a lil fun.Quote:
Originally Posted by xtreme 2
well nitrous does chemically what a turbo and intercooler does mechanically, so some would say lower is better but that would be it you where running it all the time.
keep in mind that yes nitrous is a gas but NOT a fuel, it's just cold super condensed air. because it's cold and condensed it helps to prevent detonation. also keep in mind that CR is chosen based on detonation prevention (based on low octane). If I have explained this correctly then you can see that high compression and nitrous basically counter their negative attributes.
long story short I'd say 10.0:1-10.5:1 would be the way to go.
What is the stock CR of the Aveo? Anybody know?
9.5:1 :wink:
how would it work running n2o all the time on a wot switch? how is tuning for it? hard???
it would be EXPENSIVE!! running full time nitrous is more of a dragster option where there "full time" lasts about 5-10 seconds.
nitrous isn't really hard to tune for, think of it a little bit like a chemical V-Tech. you really only want to use it at wide open throttle or close to (atleast as a street application).
hmm ok...so one time use is fine for me i dont have to have it always there. how would i tune for that then?? since i would be using a piggy back.
Use a wet shot and there is nothing to tune for. You do not want to run it all the time tho. With a wet shot, it is a mix of nitrous and fuel that injects into the intake. If you have the right sized jets, your a/f ratio is not gonna change. The only thing you might wanna do is turn back some of the ignition timing.
Running a WOT Switch is a fine idea... dunno if these guys have ever used it but I've installed a few ZEX kits with it... Pretty nice...
It's not "all the time" per say, but you have a prime switch and then a switch that is positioned on the throttle body that activates only when the Throttle Body is opened to WOT... You prime the system, and when you are ready it goes with you. But only at WOT...
So technically you could leave it on all the time if you don't smoke, and it would do nothing until you mash the peddle to the floor.
keep in mind, WOT on the aveo means the throttle is opened up to 82%. that is with the throttle by wire system on the 06s and up, dunno bout the 05s and lower.
anyone know how to change that?
you would need a way into the ECU. like a HPTuners or something like that. And you can program the WOT switch on the nitrous not to open will full WOT. what it does is read the TPS voltage. You put it in neutral, floor it and it takes the highest TPS voltage and sets that as WOT.
supposedly superchips is makin sumtin for the aveo...will find link later.
Superchips isnt really the same thing as HPtuners, SCT, Diablosport. And I have never seen a superchip that worked. Buddy had one on his SRT-8 charger and lost HP and TQ
hmmm what kinda nitrous shot can i run on a stock engine you think?
lets stay on the topic of the group buy guys
or how about staying on the discussion of the pistons.Quote:
Originally Posted by xstevex
i want to know how much stock could take or if i should build it a little better.
I was planning on throwing a 35 shot on a completely stock motor. That should be fairly safe. With these pistons, you will not make enough power to break them. Everything else around it on the other hand.....
Nitrous on a stock motor would be fine at a 35hp shot... honestly, the pistons will probably be the last thing to break on this motor...
Do you have any proof of this?Quote:
Originally Posted by xtreme 2
pistons don't normally break, connecting rods do.
I have seen several pistons with holes in them but still connected to the con rods.
In my Probe I blew a rod and threw it out the front of the block. When we tore her apart to see what happened, the Piston was a little chipped but otherwise fine. I blew 4 holes total in the block. One in the front (quarter-size), one in the rear (about the size of a toilet paper roll), one in the crank pulley side (quarter-size), and one in the bell housing for the tranny (about the size of my fist). The rod was hanging in the bellhousing a completely shredded 12 teeth on my flywheel... Thank god for the AutoZone warranty heh...
We may have to continue this topic at my home page, http://www.daftart.com under the 'Group Buys' section but for the time being here is a list of people interested.
there is nothing set in stone, no one is obligated and at this point no money has been collected.
g0ast, 8.5:1, 79.0mm ?
xstevex, 10.5:1, 79.0mm
khan4rtist, 10.5:1, 79.0mm
mikedudley, 8.5:1, 79.0mm ?
AS AN ADDED INSENTIVE... I'll give the Cometic MLS head gaskets at a better than ever price!
.030, .036, .040, .045, .051 and .051 thick...retail price $95.00, DAE price $87.00, WITH PISTONS $75.00
.065 thick...retail price $110.00, DAE price $95.00, WITH PISTONS $85.00
OK... now back to the group buy.....
Anyone know if 91 (93 in the US) octane will be good enough for 10.5 compression ratio? or will an additive be necessary?
91 will be fine, I'm almost willing to say 87 will be fine. keep in mind that nearly all honda motors come with 10.5:1 and higher compression.
yea 87 in the us is ok to run in 10.5:1 cars.....i believe thats the cr of the fit and they run 87
are we able to run an 11:1 cp ratio? i wanna run the highest possible without having to do anything to the block or head...
You guys cant just assume that since a honda does it, we can too. Those cars are tuned for it from the factory.
that is true to an extent. their fuel systems are a bit different but from what I gather in the question, it's more or a general question if running mid grade will cause detination with higher compression. to that the answer is no.
however, like i've recommended to a couple members, internals are a big deal and having a piggyback installed if not a stand alone would be well worth it even if no other mods are done.
There is more than just fuel grade in question. You are going up in compression and keeping all the timing the same. How will it not cause a problem.
Honda and Toyota both do, with the help of variable valve timing, so does Hyundai but with 10.0:1. Something we definately don't have.Quote:
Originally Posted by AVE0SAM
Because timing is ajusted with the help of the oxygen sensors, air intake temp, maf sensor and the knock sensor. Although the ecu is programmed for 87 octane and 9.5 compression, I believe higher compression and the right octane fuel will still yield good results.Quote:
Originally Posted by aveodude
yes but as gse_turbo said you will need atleast a piggyback to run highcompression piston, therefore with a good amount of tuning you can get the aveo to run 87 octane using 10.5:1 but you could and probably will get better gains if you go up to 89-91 and mess with the timingQuote:
Originally Posted by aveodude
Yes but they were talking about 87 octane.
I wouldn't do it plain and simple... You'll lose a ton of gas mileage, and without adjusting the timing your car will stutter at idle...
Cramming more air with the same amount of fuel... gonna run EVEN LEANER... and these cars already run pretty lean...
thats why i said you will be using a piggyback or standalone if your adding higher compression pistons, there for you change the fuel curve with tuning....im not saying its the best to run 87 but if your a cheapo you could
Well just to keep everyone from having to wait longer than necessary I will start "officially" collecting on Tuesday, Feb the 4th (closed Sunday and Monday) and the dead line will be Friday, Feb 29. Early payment are also going to be excepted.
Your order will be started the day that the payment is cleared so the sooner the better.
so i have till February 29th to get you money then?Quote:
Originally Posted by gse_turbo
correct. PM sent
ok so is 79mm the best gasket to get?
well all the manufactured measurement is based on the .051. if you keep with that and choose 10.5:1 (or what have you) the measurement is simple. If you choose 10.5:1 and a thinner gasket than the CR will increase but now you have to all the specks to know what the CR is changed to.Quote:
Originally Posted by AveoSSSupercharged
I'd say you are best off with 79mm and .051 gasket