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View Full Version : Finally hit 25 pds on the DR750's



Lugnut
05-02-2011, 02:02 AM
I posted this on the Other Site in Dynamics section and I just wanted to share it with everyone here .. The post


This is not something I would normally post and nor will I post much of this sort of stuff, but I wanted to pass this along with another big "Thanks" to You Matt !!! These turbos are indeed wicked and were exactly what I was hoping for ..
Thursday night I finally put the DLI on the car, and Friday morning I had to make the trip to Cherry Hill NJ to pick up a pair of transfer cases I bought .. When I left the house I hit the street and set the boost controller to 25 pds for the first time ever and in third gear at 60 MPH I just pushed the pedal down and was looking at the ARM1 on the ARC, and when the car hit boost around say 80ish, maybe 85 and she broke loose on the stock chromies and cheap Sumitomo HTR's I have on her right now .. I have to say I was so surprised that I had to slow the car back down to 50 MPH and do it all again just to make sure it did what I thought it did :p and yes, its confirmed .. 25pds of boost will break the car loose at 75-85 MPH ..

Sooooo, today I was heading down the highway when I came through a EZpass booth and ran right into what I think was three 1000cc bikes .. Might have been one 750 in there as well as I just didnt pay all that much attention to each individual bike .. Anyway they were just getting through the toll booth and they took off in a merge lane and I took off right behind them just following them and getting the car up the street out of the many toll booth lanes of traffic .. Really no other intentions, just trying to get home .. Normal BS .. Well as it played out I ended up right there behind them, and just about the time I let off a little they went around a car and we were seperated .. Now no serious racing in mind here but about a mile further down the road they had gotten over in a lane and I guess were wondering what car was behind them or whatever, so I just cruised by them at around 70 or so and there happened to be a car behind me blocking them from chasing me if they even wanted too .. So anyway as I got around 150 ft ahead of them or so I looked in the rear view and things cleared up and here they came .. So at seventy as one got just in front of me about 15 feet and one was just equal with the drivers side door I hit third and off we went .. I actually had to let off the pedal just a hair because I halved the distance to the bike in front of me when I hit hard boost and the bike on the side didnt move a inch throughout the entire gear .. It was just like we were sitting still .. I didnt even bother to get into fourth and I havent even messed with that gear yet .. Car is stock weight and today I had a half tank of gas and a passenger as well ..
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TurboSinceBirth
05-02-2011, 02:19 AM
Sounds like a blast. I'm jealous. :) There's a 92 VR-4 for sale locally that needs some work. I'm tempted to pick it up to make it a DR-750 car. :D I need to fix mine first though instead of putting it on the back burner.

GTOX
05-02-2011, 04:04 AM
Nice one. Are you running stock engine internals?

TT Eric
05-02-2011, 09:58 AM
I told often to Jason that the real fun begin at 25psi! :)

Those turbos are indeed incredible! I mean unbelievable!

Now get some Z1's for the traction! I'm running 265's and they don't spin at 26 psi so far, I want to try 30psi on them but I have a bug to fix before.

Eric

Ninja Performance
05-02-2011, 11:15 AM
Very nice. Maybe I missed it, what fuel are you running? Meth inj?

-Chris

Lugnut
05-02-2011, 02:39 PM
Very nice. Maybe I missed it, what fuel are you running? Meth inj?

-Chris

Chris Im on straight 92 with 1000cc's Meth


I told often to Jason that the real fun begin at 25psi! :)

Those turbos are indeed incredible! I mean unbelievable!

Now get some Z1's for the traction! I'm running 265's and they don't spin at 26 psi so far, I want to try 30psi on them but I have a bug to fix before.


Eric

Eric your not kidding there .. Its just been a great ride so far .. 15 lbs was fun .. 20 lbs was eye opening .. And 25 is definitely EPIC ... Best part of it all IMO is the car is so controllable and user friendly to drive under boost ... Just point and go !!! Back when Jason and I were talking about building this car I kept saying "I want one that will spin the wheels at 40 MPH" ... ... Well haha how big is the smile on my face .. As far the rubbers they are coming down the pipe .. Thanks for the heads up that your sticking to the road finally ... The unexpected tranny tcase sale sucked up all my spending cash so I will have to wait on alot of plans I had for the car but I will get it there ... Most likely I just wait till summer is over before we go any deeper into the rabbit hole with her !!!


Nice one. Are you running stock engine internals?

100% stock internals ...


Sounds like a blast. I'm jealous. :) There's a 92 VR-4 for sale locally that needs some work. I'm tempted to pick it up to make it a DR-750 car. :D I need to fix mine first though instead of putting it on the back burner.

Performance wise you will never be sorry you dropped the dime on these turbos I promise ..

STiedVR4Guy
05-02-2011, 03:00 PM
How many miles on your car?

Lugnut
05-02-2011, 04:32 PM
133500 .. And fwiw I have owned it since 99 and its been garaged, cared for and maintained its whole life !!!

STiedVR4Guy
05-02-2011, 04:35 PM
I have 166k on mine and I'm debating on if I should save and get it rebuilt or just inspect everything then begin mods :/ thanks for the info ^_^

Lugnut
05-02-2011, 05:24 PM
My .02 .. If its running good just build it and go from there ..

CoopKill
05-02-2011, 10:51 PM
what was the pump/no meth limit on boost?

NOMIEZVR4
05-02-2011, 10:58 PM
Wow thats amazing stuff...im jealous..

dpartinvr4
05-02-2011, 11:09 PM
:PicsOrBan: i want to see some video :)

CoopKill
05-02-2011, 11:10 PM
Yes, Yes!

Lugnut
05-03-2011, 04:24 PM
what was the pump/no meth limit on boost?

You know I cannot answer that with fact .. I think I remember hearing the number 17, but that might be the 19t setup .. This car went from 15 to 20 lbs of boost in one shot and we added the meth at that point .. I do believe Andre ran his setup without Meth way up into the 20's, but I cannot recall what else he had going on or how that all worked out for him in the end ..

I will get some video of the car online here shortly .. 30lbs is literally right around the corner for this car and I really wanted to hold off until then !!!!

ChargerX3
05-03-2011, 05:21 PM
Want me to fix the pds with lbs?

Damn, scratch that...

GTOX
05-04-2011, 07:44 AM
How well will stock internals hold up to 25-30 psi over time?

Do you know how much power you're putting down atm?

SnakeSkinner
05-04-2011, 12:58 PM
How well will stock internals hold up to 25-30 psi over time?

Do you know how much power you're putting down atm?

My 17yr old stock motor in my stealth has been holding up to DR750's for a few yrs. I'm driving the car today in fact:)

Lugnut
05-04-2011, 03:30 PM
How well will stock internals hold up to 25-30 psi over time?

Do you know how much power you're putting down atm?

Honestly I dont know on the power .. It has to be upper fives and close to six at 25lbs .. I have all the support for the turbos and I tell you, they will leave you in awe ... Car is rediculously fast !!!! Currently I am waiting to get that LCD knock sensor whenever the new batch becomes available .. Once installed we will raise the boost and then go dyno for numbers ..

FeaRpb
05-04-2011, 05:26 PM
I am loving the updates Lugnut. I can't wait to finish my build so I can experience these things you are talking about haha.

Jesters Deadd
05-04-2011, 05:47 PM
Is anyone running E85 and DR750s? would you need meth or water injection with E85? I know you would need huge injectors but would you still need water/meth injection?

FeaRpb
05-04-2011, 05:48 PM
I will be running e85 with them. I will not be using meth, thats why I am going e85. One less thing I have to worry about failing lol.

Roybatty
05-04-2011, 08:01 PM
My 17yr old stock motor in my stealth has been holding up to DR750's for a few yrs. I'm driving the car today in fact:)

Lug/or anyone, have you done any Preventative Maintenance to bearings? I gleaned over many posts and determined there is a correlation between mileage and replacing bearings. Rod bearings being the more critical @ 100k.

SnakeSkinner
05-04-2011, 11:00 PM
Honestly I dont know on the power .. It has to be upper fives and close to six at 25lbs .. I have all the support for the turbos and I tell you, they will leave you in awe ... Car is rediculously fast !!!! Currently I am waiting to get that LCD knock sensor whenever the new batch becomes available .. Once installed we will raise the boost and then go dyno for numbers ..


How would you describe the difference between them and your buddy's 19T car?

JasonY
05-04-2011, 11:29 PM
My 19T's are still hampered by stock fuel due to my recent inspection. We will find out how they compare in a month or so(todd heads back to work so car will be parked for 3-4 weeks) boost per boost once i re-install my fuel setup. Only difference is todd will be FMIC and ARC2 where im stock MAS(maybe Evo!) and tuned on the stock ECU with DSM sidemounts. Probably compare 15psi and 20psi 3rd gear pulls.

FWIW i think the 750's will really shine at the +20psi boost levels. The difference between 15-20psi was pretty impressive, but expected. The difference between 20-25psi is just wild and totally unexpected from a TD04 turbo...impressive as hell!

Jason

GTOX
05-05-2011, 04:13 AM
Honestly I dont know on the power .. It has to be upper fives and close to six at 25lbs .. I have all the support for the turbos and I tell you, they will leave you in awe ... Car is rediculously fast !!!! Currently I am waiting to get that LCD knock sensor whenever the new batch becomes available .. Once installed we will raise the boost and then go dyno for numbers ..

Sounds good. You will love the LCD controller, I started installing mine last weekend, very nice and OEM looking FTW.

Is this car your DD? I would love to put some DR750s in my stock motor DD and run maybe a low boost setting of about 18psi and high setting of about 25psi, switching between the two via the LCD controller. If all goes well I will have a very similar set up to yours.

Keep the updates coming.