ok... i kno that the nitrous is activated at WOT... when u slam the gas basically.......
so in an auto.... when it's shifting gears... do i have to let off the gas during the shift (i usually just keep it on the floor)... or will the system know not to shoot the nitrous between shifts already?

 

Hmmm...the engine will still be WOT as far as I know, so it will keep spraying. Perhaps you should rig a trigger system (instead of RPM or WOT operated). You operate it like you would any type of regular button/trigger. Press when you want to fire !

 

that's what i was afraid of

 

You want it to be on during the shift thats why auto's are much more suited to spray than the manuals.
Get a tranny cooler and do the drop resistor mod, I have been using it this way for 2 years now.

 

oh it's better for the nitrous to be on during the shift? mmmm.... sounds good then....

 

OK, I trust Jim He's got an auto...

 

Jime,
do you mean to suggest that spraying through the shift doesn't hurt longevity of the tranny? It seems like it would be hotter during the shifts. Wouldn't it stress internal parts such as bands and clutches more?

 

I don't mean to suggest it doesn't hurt the longevity of the tranny. However any time you race or shift at WOT you are probably going to hurt the longevity of all your powertrain parts. Does that mean we aren't going to do it anymore? Not on your life.

That aside, I have been spraying, (up to a 150 shot) and racing the same engine and trans for 2 years now, spraying through the gears etc etc and it is still going.

Will eveyone have the same results, not likely, some people manage to blow up their engines and transmissions running N/A nevermind running 12 sec 1/4's.

 

Yeah, what Jime said. I have a 70 shot, auto, and I spray right off the line.

 

yes having a auto is the best with nitrous.. just put your pedal to the medal then activate the switch after 3000 rpms and off you go you can hold it at least ten secs..even though personally i 've held it a good three quarter of a mile once.. but you dont have to release the gas till the race is done.. which doesnt last more than a 1/4 mile usually...

 

c max i hope that your not spraying on the street cause that just not cool

 

who me? never... are you close by enlishtown.. cause thats where the spraying goes down.. i'm trying to organize a englistown meet that i posted in the s/c turbo sect if your interested.. i got a couple of b.m.w
and supra guys who say we dont stand a chance..i say lets prove em wrong.. i love that part..anyway thanks for the friendly advice..

 

Hey Jime, what kit are you using ? Looking at your time I would say a 100 shots but dunno, I'm thinking of buying a kit for spring any recommandation for an auto 2K1 with mods.

Cheers

AA

 

Andre
Kit is Nitrous Express 20923. I run all HP shots between 35-150. My time for a 35 shot is 13.1 and for a 150 its 12.1.

 

Thank you Jime, that sounds like a nice present for birthday that would make it easier to wait for the Turbo project.

How the tranny is holding all that power ? Where did you purchase the kit ?

Sorry for all the questions, but there is a local guy that is challenging me to go to the track this summer, he want to kick my bott, saying that I stand no chance with my grocery getter against his 180SX with turbo, he's running mid 13's. I know stock I have no chance, but with Nitrous it can be a different story and I can probably give him a ride for his money and at least gain some respect, all this is just for fun though.

Cheers

AA

 

My kit came right from NX, my Son is sponsored by them.

I did go through one tranny but it was my fault I can't blame the car. Doing stuff I shouldn't have been doing, showing off. Otherwise it takes it like a champ.

 

Not to discredit anything Jime says, but his results with his particular tranny are NOT typical results. Some of the autos seem to be factory freaks, speaking of just the transmissions. There are more people who have taken the same precautions and still end up having to replace transmissions. Taking the same precautions that Jime took for his tranny will definitely be better, but don't expect that just because his transmission handles the power just fine that every other auto should as well. I had to pay for that mistake, assuming that just because other peoples' tranny held up well that mine would too.

TK

 

I you read my earlier post I said "Will everyone have the same results, not likely, some people manage to blow up their engines and transmissions running N/A nevermind running 12 sec 1/4's."

Do I have a factory freak? NO. If I do I am on my second one because the first one was the same. Also I believe I am typical, its the others that aren't. There are many many more people who have no trouble at all with their trannys than do, so I would say they are the exceptions not me.

Regardless, I am always careful to tell people that you take the risk of blowing up your engine, transmission etc everytime you increase HP or race.

Just purchased a 2k2 SE and I plan on doing the same mods and racing it this year so we will see if its a factory freak too.

 

Awesome can't wait to see the times on this thing. Just a word of warning and you can take this however you want...if you spray in between gear changes in the 02 the tranny will not last long at all. Mine is almost completely gone and I only went through about 6-7 bottles. The drop resistor didn't help much and I hardly noticed a difference is shifting with it unplugged. Well good luck and lets see some 11's.

 

Hey Matt, well its going to get sprayed between gears so we will see. But as I read on one of your posts its under warranty. However I realize I will likely only get one so I am not going to get tooo crazy with it.

 

Yea it is under warranty but the dealer is trying to deny me now b/c I have a transmission cooler installed. So I might be SOL, I find out later today.

 

Oh, sheit. You would think that would be a + for you but I guess they could say foreign material could have been introduced etc, who knows.

Thanks for the info though, I will make sure I remove my cooler if anything happens. Plus a host of other stuff as well. It would be a pain but still much better than paying for the trans.

 

i was one of the lucky ones. even though i only spray a 60 shot i never had a tranny problem. but the reason for the tranny failure is the pause in between shifting of the auto. this slowly burns the clutches. to play it safe i got the v.b upgrade and never had a problem.. p.s. i spray in any gear at anytime still have the same tranny..

 

Matt did you used the drop resistor mod and cooler right from the start or did you do it later?

Just wondering if there might have already been damage to the clutches before you did it and that made it fail earlier.

I'm hoping you are the exception rather than the rule.

 

well I had the tranny cooler on almost since day one of owning the car. I tried the drop resistor once while spraying and didn't notice much difference. I did spray a couple times with it plugged up so I might have damaged something before I tried the drop resistor.

 

well you have to look at the power difference also. I made 314whp and 396tq on the dyno with a 100 shot. The 02's have so much torque especially with the addition of nitrous that it puts quite a bit more strain on the tranny.

 

oh yeh without a doubt. but if you put the v.b upgrade you should be fine.. at least much longer than if you didnt do it.. i haven't dynod in a while but last time up i was 320WHP. i still have the same tranny, just upgraded the v.b. to handle the additional h.p. i have now added. but in your case you have so many horses kicking in instantly, so your tranny is taking a little more abuse.. thats why you definitley need a tranny valve upgrade. the day my tranny dies , i will be going six speed period....

 

Matt I am also going to run the dual stage and just run and 35-50 shot out of the hole then hit the second stage after the 1-2 shift so that should help the longevitiy also.

 

Jime, if you dont mind me asking (you can pm me if you dont want everyone to know) but what are all your mods that you run a 14.6NA w/ the auto? And then down to a 13.1 on a 35 shot. I know I dont run a 14.6 NA and that if I ran a 75 shot let alone a 35 I would get to 13.1. Unless it's the slicks that help out some. I'd like to have a mid to low 13sec maxima w/ the nitrous at the track. I dont know if I've ruined my tranny by doing this, but I've had the cooler on there since the nitrous ahs been installed, but I dont have the drop resistor mod done. Can you give me some tips possibly? This spring it's gonna go to the track and try NA, 50shot and 75 shot, to see how the numbers are.

Justin

 

One of the overlooked things about Jim's car is the pretty good amount of weight reduction allowing him to benifit more from the power. I believe he just has the usual exhaust, y pipe, intake, and fuel cell for C-16.

 

Justin

My weight is 3k with me in the car. I didn't get too carried away with weight reduction but I did eliminate the sound deadening under the carpets, front and rear bumper reinforcement, lightweight battery, lighweight seats and light wheels, I even ran most of the time with the rear seat in because it doesn't weigh much anyway. I also ran with the passenger seat in because of our local rules.

All my mods are listed in the 1/4 timeslip section, but like Matt says just the usual stuff and no MEVI or ECU.

Slicks don't help out SOME they help out a LOT. I think I posted earlier but with a 35 shot I did something like 15 with street tires, 13.9 with Drag Radials and 13.2 with a 35 shot all within a 45 min period.

One other thing I started doing was coming the line just above idle, like 8 or 900 RPM no more. I also hit the spray at the same time.

I ran AGX's in the rear last year but this year I will be running the Tokico Illuminas all the way around. Got to have the rear as still and possible to reduce weight transfer, that alone is good for at least .2 in the 1/4.

Good Luck
Jim