I appreciate everyone's help over the last couple of weeks as i know i have been asking alot of questions, but i am finally getting a beater next week which has allowed me to take my car to the level i want it at. Also i can install all this stuff i have ordered and things sitting in my room. I've been talking wiith jay and he is going to help me do a 5speed swap this spring so i want to see how much the auto can take.

My setup as of next week will be:
V2 w/ 2.87 and CAI (I think will yeild 12 maybe 13 psi)
3" charge pipe
WSP 2.5" Test pipe
WSP 2.5" B pipe
ATP 3" VES (exhaust cuttout)
Hotshot Headers
Power Enterprise 510cc injectors
Greddy Emanage w/ all the goodies
UR lightened drive pulley

Now i have the stage 2.5 VB mod from maximum tunning and B&M tranny cooler. So driving the car on weekends and NOT dawging it all the time, how long do you guys think it will take? I vote 1 1/2 months

 

Just wondering, but have you done the drop resistor mod yet?

 

no, that is only used during WOT correct?

Thanks again alex with all your help with the fuel setup, i know i can be stubborn sometimes

 

Yes, you hook up a WOT switch and it increases line pressure, so the tranny shifts faster without slipping as much IIRC.

I'll get you over 350whp, yet. Just keep copying StephenMaxs' path and you don't need me for anything.

 

Where are you guys getting the 3" charge piping? Can it be ordered from somewhere or just custom made at a local shop somewhere?

Now onto the topic, I think the length of time the Auto will last is up to you. IF you have your foot into it all the time it will definately shorten the life, but it should last quite a while with the addition of the VB mod.

 

Thats what i like to see blu, some positive thinking. I am getting the piping from herelink

 

i agree it all depends on how hard you drive it

and if you only drive it once a twice a week it may last longer than 4 month but who knows

 

i have been boosted driving my car daily for a year now and it still shifts just fine with no problems. I just hope i can prove that the auto transmission is not as weak as everyone makes it out to be, with the proper precautions and responsible driving it can last under large amounts of power.

 

We are going to have to set up that Drop resistor mod if your tranny holds the new pulley and all of the other goodies.

BTW it is lightened.

 

yea i am just an example of how sad louisiana school system really is

Lets try and do it next weekend. I am on a mission to prove to all the haters that the tranny can handle power, but the driver must drive responsible. That is until i do the swap this spring

 

Shadow's car has been turbo for over a year now along w/ formerly boosted w/ a 3.33 pulley S/C for 20k so I think you're underestimating how tough the auto is.

He's making 314ft-lbs to the wheels and we've done 20-30 dyno pulls and 20+ drag runs split between the S/C and the turbo. Last summer I was driving it to work w/ the frequent highway blast and a 200+ mile roadtrip. B/c of the alternator going south it wasn't driven for a while but the auto is still holding up and we're hoping to hit 400whp before it lets go.

Also why the 3" charge pipe? Wouldn't the fixed boost of the V2 be negatively affected by trying to increase the volume the S/C has to fill?

 

I'm not underestimating the tranny at all, i am just doing the 5speed conv just for performance gain

How much power was shadow putting down when he was SC'd?

I was doing the 3"charge pipe because i thought the stock piping was restrictive. Would the larger diameter piping cause a decrease in velocity of the charged air?

 

Since my tranny already has 162K miles on it, I am looking into building my tranny before I push more power thru it. I had a good talk with Rob at NRH transmissions and he seems like he knows what he's doing. For $2500 shipped, I can have my tranny built and my stall raised even more, plus a better gearing. He gives a lifetime warranty, which is insanely impressive. After doing all my calculations, I am leaning towards a 4.10 final drive, which will allow me to do about 120mph in 3rd gear at 7000 rpm on 24" slicks. That will be SO nice on the street for daily driving. I still need to talk to Rob again to find out more about if he's able to do a 4.10 final drive.

He also says he's able to firm up the 3 to 4 shift!! I didn't think that was possible since it's not driven by fluid pressure, but is electrical. So, if I happen to shift into 4th gear at the track with my short gearing and high amount of power, it won't be a bad thing. I know Jime hates the 3-4 shift in his 2K2 automatic b/c it slips so bad when he's spraying his 125 shot.

 

does that price include shipping?

 

That is correct. $2500 shipped.

 

It seems all the SC'd folks auto trannies are holding up. Everybody with a turbo, except shadow, has broke.

Mine broke with the stg 2 VB upgrade.

For my 1 cent of advice, I think it's the partial throttle shifts that hurt the most. (for turbos) You could be boosting the entire shift.

I say 4+ months

 

doh, didn't see that

 

Yeah, the partial throttle shift is bad for the tranny. If you're under boost at partial throttle, you can feel it flare up. That's why I try to avoid partial throttle shifting under boost. Under full throttle, my tranny doesn't slip at all.

In the next week, I'm really going to try and break the 400whp mark. Just waiting for the 660cc's to get here. Car is at the shop already and the nitrous is in as well as the new MAF. We'll see if 12psi will do it, if that doesn't work, then we'll spray a small shot of nitrous. Or I'll run it at 15psi on C16.

 

I put my V2 SC on Oct.2000. The Mobiletek VB mod came along a year after that along with the tranny cooler. I've had no tranny problems since.

 

Hey Chris how has your tranny been holding up after you installed the S/C. I just posted a thread today to see if I should get a S/C too, because my Max is also an auto. I heard that you are probably going to do a swap to 5 speed if you know someone keep me informed.

 

Heat is the enemy. TRD supercharger kit comes with an auto tranny cooler. So if TRD believes a tranny cooler is a good idea, I'm sold on that idea. I flush my ATF every year with Mobil 1.

 

I was actually thinking about hooking up a 2nd tranny cooler in line with the first one. Any thoughts?

 

I had the haden 404 and stg 2 VB

 

Most TRD kits boost about 6psi. Tranny cooler and VB mod will help only so much.

 

Hmmn...I swore my friends TRD supercharger for his Tacoma didn't come with one.

You sure?

 

We had a bit of a tranny cooler hose leak due to a faulty clamp so we cycled out about half a gallon of fluid after the turbo install just moving it around the dyno.

We just run one of the cheap autozone tranny coolers after the factory one. The extra fluid volume probably helps a bit as well. We also don't run the car continually into boost except on the dyno.

Beat on any stock transmission w/ 100% more torque than it was designed for and you're asking for trouble. More than enough guys have done some horrific things to their manuals to know they aren't exactly bullet proof either.

 

No but manuals are far stronger. A few guys in the 12s with stock trannies, I think.

 

2 stock 5spds have seen 11's

 

There are autos in the 12's as well despite the lower efficiency. The first Maxima into the 12's (debated) was an auto. Ask the guys in the 11's if they managed to blow a manual somewhere in the process of reaching the 11's. I know Mardi shattered 3rd on one of his tranny's and several others have broken things. I've also read people damaging their manuals naturally aspirated.

Nowhere am I saying the auto is stronger than the manual. I just don't think everyone should rip out their autos thinking the manual is bullet proof. Space/cost limitations in a FWD setup mean it's very hard to push 300-400ft-lb of torque through a tranny designed for half that. Personally I'd much rather have a 5spd in Shadow's car but we've gone this far w/ it and we're just going to see just how long it will last. It's not worth any money off the car so run it till it's dead.

 

I have killer 3 auto trannies and now have a NRH tranny and it is awsome. It shifts much faster than anyone can change gears in a 5 speed. Especially the first 2 or 3 gears. I just bang the rev limiter in each gear.
Also, I had the valve body mod (both of them) and neither helped they only protect 1-2 gear change not the higher gear changes. All my trannies died in 3 or 4 gear (slipped).
To answer your question: If you boost daily (which is the whole point of getting boost) then it will not last very long.
My NRH tranny is one of my best mods.

chris'smax: I have two tranny coolers installed.

 

You are right driving normal will increase the life of the tranny. If your one of those guys that are boosted and keep it in the garage and at the shows the auto tranny will have an even longer life span. One or two trips to the track should not hurt the tranny much. A good cooler should help keep the temps down.

Now if your like some folks who cant keep their foot of the gas pedal i...e...JaimeCBR and our beloved MOD Bags your auto tranny wont last long. CBR on the other loves to take it to the track whenever possible. He had work done on his auto tranny two times.

 

That's why I am already making arrangements to get a built tranny from Rob at NRH. I just got off the phone with him a 2nd time and he answered some more questions I had. I am requesting a final drive around 4.10s. He said he will be able to do that. Plus, he can modify my torque converter so it will allow me to lock it up while I'm WOT going down the track. So, I have the best of both worlds! When you lock up the TC, it can drop the revs, which allows you to stay in your power band longer before you shift into the next gear. He is going to research this some more and confirm that he can do these things for me before he sends me a crate to put my tranny in. I can't wait!

 

Hey Latin Max,
I would really appreciate an update on how your auto tranny built by NRH is performing and holding up. Also you said that you bounced off the rev limiter if I understand you correctly? I have a 350Z with auto transmission that I am considering having NRH build up for forced induction. Rob at NRH told me, among other things, that he can upgrade my auto transmission so that it will shift just before redline (like it does stock) even after I go forced induction and without hitting the rev limiter in the full auto mode. Are you having problems hitting the rev limiter after NRH upgraded your auto tranny and was this something that was supposed to be cured by the upgrades? 350Zs are having this same problem of hitting the rev limiter in the full auto mode with forced induction. I know I can go to the manual mode but I'd rather leave it in the auto mode if possible and have very consistent shifts for bracket racing.

I would really appreciate any info any of you other guys/gals can give me about NRH as well. One of THE keys to my running quick qtr. miles is this auto tranny upgrade. Thanks very much for any info and help you can give me.

 

When I said that I hit the rev limiter. I meant exactly that and not bounce off of the rev limiter. So I get to the revlimiter and it shifts hard under boost (breaking traction If I let it) I love what he did for my tranny. It has to be one of the best mods to enhance my boost that I have done to date.
The only warning I can give is that he is vey slow on getting the tranies built. Please tell him that I recommended him. So that he knows that I am talking about him. Well worth the wait but the key word here is WAIT.

 

Oh man! That's what I hoped you meant! Cause your post was very upbeat and positive, but I just wanted to make sure. How you described it above sounds great. Thanks for clearing up my confusion. I really appreciate this and I absolutely will tell Rob that you recommended him. This is really crucial to me. With the power I will be putting down with twin turbos, I do NOT think I can be successful with my 350Z without a stronger, quicker shifting auto tranny. Thanks again, you really made my day. Rob really impressed me already just talking to him on the phone a couple of times. And it really helps to hear from actual customers as well. No problemo on the wait. I am very patient. I had rather have him take his time and get it right than rush anyway.

I clicked on the "VQ Power MOM May" in your post and if that is your car, I see you are running a Stillen supercharger on your Max. I am not as familiar with Max forced induction as 350Zs, but I think that is a centrifugal supercharger based on the Vortech V-2 blower (for 2000 Max anyway). What kind of power are you putting down? If I remember correctly, I think for the 2000 Max that setup put out about 281 hp and 231 lb ft torque to the wheels on the standard belt. I hope y'all don't mind me being on this board. I have an '04 350Z, but my VQ engine is very close to the Max's engine for the same production year as I'm sure most of you guys/gals know. So we do have a lot in common. Thanks, again.

How many miles do you have on your tranny since Rob upgraded it?

 

I just got back from shopping and now my tranny is starting to act up at 111,000 kilometers (or 68,972 miles). The V2 SC was installed October 2000 and the Mobiltek vb mod went in (installed by myself) in 2002.

As I'm tooling along on the hwy a modded pickup truck catches up to me and follows me for a while. I let the hammer down and put some distance between us but traffic was getting heavy as we came up to an on ramp. This was while I had the O/D off. I took the next exit and came up to a light. When the light changed I stepped on the gas but it felt unresponsive. I had to press harder and the car went forward but this time with a lurch and driveline shock. I thought Oh crap! and then thought maybe it was my BOV adjustment that did it. I pulled over after a while and found out that I couldn't go into reverse! Ai Ya! I then put the BOV setting to what it was before and hoped that would help. Again that sluggish acceleration. I got to the auto parts shop and tried to put it in reverse and nothing happened. Press the gas more and boom! driveline shock and we're back in business. Its almost like the gears hadn't reset itself properly. I got home and checked the fluid level. At the hot side of the stick it looks ok but the color is not bright red but more like burnt red.
Well, I'm going to get a tranny flush today and see if that would help. If that doesn't work then it looks like repairs are needed.

Update:
I had the tranny flush and everything feels better now. I guess I didn't read the oil level properly but every time I stuck the stick down it would always get smeared.

 

BlackCat: VB modd does not do anything for 2nd to 3rd and 3rd to 4th gears. Taht is what I always fries until I got the NRH tranny...I may be wrong but I think that 4th is attached to reverse....some how.

More Power: I don't know what power I have right now, since I just re-did eveything...smaller pulley, larger injectors, e-manage, water injection, FMIC..and much more. I hope to have numbers ny the end of the month.
But I am glad to here that Rob does the 350z also...since I bought one in November and I am sure I will get the bug very soon. Since the max is alottttt faster than the Z.

 

Good luck with your Max, LatinMax. I am interested to hear what kind of power you are putting down when you get the info. Yes, I am very sure you have a lot more power than me with your Maxima right now. I am pure stock and so approx. 230 to 240 hp at the wheels. I am running 14.1 sec. qtrs. pure stock right down to the air filter. Check out the APS single and twin turbos for your 350Z. They rock! 427 hp to the wheels on stock internals and that is about as far as one should push our stock rods IMO. What really impresses me about the kits though is the reliability of our VQ engines with APS turbos.

http://www.airpowersystems.com.au/350z/350z.htm

I am trying to convince my wife to go to the Maxima when she trades in her minivan for something else.

 

Where did you read that?

 

Just talk to both guys that do the VB mod and they will tell you that all they do is remove the luxtury shift from 1st to 2nd.
Then I spoke to Rob at NRH and he said that doins 1st to 2nd is easy (just drill out hole a little bigger) But all the other shift point take some serious work to modify. (I think it took Rob a few months of machining parts and testing to get it right)
Also every tranny I cooked had VB mods and a tranny cooler and I either cooked 2nd to 3rd or 3rd to 4th.
I like boosting on the highway above 50 and I was making tto much power for the tranny to handle the shifts and it would end up slipping.
My last 2 trannies made the clutches look like toast for 3rd & 4th.

The NRH tranny will allow me th shift so hard that I can chirp the wheels from 2nd to 3rd. That alone without all the other benifits makes it amazing.