Guess my Dyno #'s

[hottscennessey]

Thanks!

I've also decided I need more timing in the bottom end to help spool the turbo. This is way to laggy for a .68 hotside on a 3L. I'm hoping that will help me get better numbers as well.

 

[hottscennessey]

 

[SD2JZA70]

Stock 2JGE cams do 700whp++, not an issue here.

What meth kit are you using? Is it a progressive kit? When did full spray hit?

Let's see those timing numbers.

While you can do over 700rwhp with stock cams ( we currently have the highest verified # @ 762 rwhp) There is alot of power to be had by changing the cams. We did back to back testing between the stock and HKS 280 cams and the numbers were staggering.

 

[hottscennessey]

SD2J- I was wondering, are there any 2JZGE aftermarket cams that allow use of the stock distributor (or in my case 7M CPS)?

 

[SD2JZA70]

The only one I know of is from cowboybebop on supraforums. He offers an exhaust cam. They hard weld a stock cam then do the grind so its better than your typical regrind. We put a magnet in the cam gear and used the TT crank trigger when we put in the HKS cams.

 

[IJ.]

< Hard face welded cames here and they're brilliant and show 0 signs of wear in 30K km's. (I know mines a 7M but same geometry and bigger diameter buckets in a JZ should make it nicer again)

 

[arz]

Usually when welding on cast, the weld is more than twice as strong as the base material. I can imagine the ground surface would hold up very well. The cams would probably be more prone to cracking right outside the heat affected zone than ever wearing out. Since there so low-load Im sure it would last forever if done right.

 

[hottscennessey]

I see some cams in my future

EDIT: distant future.. that is.

 

[GeneStarWindGSW]

The Beast is coming Scott :evil2:

look familar ?

 

[hottscennessey]

Looking good, bro. Do something with that red wire loom!

Oh, and bake parts cleaner will do wonders on that tranny!

 

[GeneStarWindGSW]

yea i'll do something about it once my car runs but the motor an tranny are in the car already. I bought some Redline MT90 for the tranny, so my R154 will live forevarr! . Where i get bake parts cleaner?

 

[RacerXJ220]

While you can do over 700rwhp with stock cams ( we currently have the highest verified # @ 762 rwhp) There is alot of power to be had by changing the cams. We did back to back testing between the stock and HKS 280 cams and the numbers were staggering.

In his case I was stating the cams are not what's causing his power to be so low.

One would hope HKS 280's would make more power than stock GE profiles*

 

[VanSupra]

More than a 7M with same mods.

Well if this is the case this car should be making in excess of 723RWHP which I am doing @ 32psi. I was easily doing 534@ 16psi with the .81 ar housing. As Tom(breezin) mentioned I do have cams but that's about it. The T-70 currently on my car is a Turbonetics Q trim with the smaller .68 ar backside. As arz has mentioned check, or If it were me I'd change out that wastegate spring or the entire wastegate. You want a 1.4bar spring for what you're trying to do. The boost controller itself is not capable of holding a steady boost level with a 10psi spring. I also wouldn't try to hit 700plus with that Bosch 044 either. Why didn't you install (2) of them? Correct standalone engine management tuning is highly critical. Also as was mentioned lose the meth/ water and set your baseline with c16 or better. If you want to be safe and error on the safe side use VP Import.,hth and gl

 

[RacerXJ220]

Not really cool.

He will make more HP than a 7M with the same mods.

 

[suprabad]

I've been following this thread and listening to what everybody had to say.

From the outside looking in, based on what you have described, It sounds like you have a 650 hp set-up (conservatively) I would just offer this simple advice:

Don't rush out and make any huge changes. I think you already solved your problem, i.e. Boost leak. When your sure you have the ic pipes and vacuum lines barrell tight...check them again.

Boost is a sneaky bastard. It'll escape right under your nose, in a place you were sure was a dead lock seal! I can't tell you how many times I had trouble locating where my psi drop was coming from, because I didn't carefully look at a component I was "sure" "no way" could be leaking and therefore the problem.

I wouldn't fuck around with stratospheric timing maps just yet. Not at least until I was sure about everything else. I have seen more engins go kaplooee because of agressive timing than anything else I can think of.

Definitley racing fuel. I have reservations about meth injection (but that's another subject).

Bigger spring fo sho.

I agree with one of the posters who stated that it's probably some simple little things that added up.

I think if you're patient and thorough, you'll be in great shape. Good luck!

 

[VanSupra]

Not really cool.

He will make more HP than a 7M with the same mods.

Sorry, not trying to be not cool, just trying to let him know what's working for me on a 7M with similar turbo. I guess it just came out sounding that way.

By the way RacerX I'm interested in what you are running with what kind of power?

 

[hottscennessey]

Thanks for all the input guys.

For those of you worried about me running too much timing. It's not going to happen. Today I added a lot of timing in vac.. I ended up hitting 10psi 600RPM's sooner. The car is much more responsive. Remember that I'm working off the Stinger's universal base timing map so that is why my timing map was so conservative to begin with.

I'm working on my own "det can" before I add any more timing anywhere. This will be used primarily for street tuning because I can't afford the dyno time.

I will be picking up a set of these today..
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=95653

The plan is to modify the probe so I can bolt it to the block, leave it there and screw on my digital stethoscope whenever I want to check for detonation.

 

[RacerXJ220]

Sorry, not trying to be not cool, just trying to let him know what's working for me on a 7M with similar turbo. I guess it just came out sounding that way.

By the way RacerX I'm interested in what you are running with what kind of power?

PM sent.

 

[X-man]

Stock N/A cams.. Blitz SBCID boost controller.. I have a HKS Style wastegate with a 10 PSI spring...

I'm starting to think that my problem is trying to run so much boost on a 10 PSI spring.. can anyone confirm this as a problem?

Notice on the graph how I hit max power and then it immediately falls off so jaggedly as if the wastegate is fluttering..

I ran 32 psi on a 10.2 psi spring. Some of the problem could be your "HKS style" wastegate. I had one die right on the dyno on a car I built. It was sticking partially open causing boost to fall off. I changed it out on the dyno for a 40 mm HKS gate and was rock solid all the way to redline. This car also had a boost controller that had to have gain functions set on it.

 

[VanSupra]

PM sent.

Nice pm RacerX. This is just a suggestion, but is it possible for you to converse or pm one in more of a non confrontational, argumentative manner. My post was made as a comparison as "you say" because of hot's having issues with a similar turbo that I am currently running on my car. This was not meant as a 2j is better than a 7M or visa versa thread. We're all struggling here on these forums to collectivley meet the same goal, which is to make HP and enjoy it! Hope you're enjoying yours.