Jump to content
SAU Community

Recommended Posts

  • Replies 237
  • Created
  • Last Reply

Top Posters In This Topic

 

r31nismoid. you dont have to pump the clutch to get it to break traction, your coming to perth, you can have a drive.

tristan

nice :)

ill say by looking at that no clutch required!

What makes it so savage though?

The dyno graph shows 438.7 rwhp at 162 kph, that's around 5,800 rpm in 4th assuming standard gearing and tyre diameter.

No air filter I notice, or ducting for it. I don't think I would be driving that around the sand blown streets of Perth, or the soot laden streets of Sydney/Melbourne either.

:)

Can someone please tell me how I can get more then 310rwhp out of my stock injectors with the fuel pressure at 50psi ???

Not me, 310 rwhp = 231 rwk, best I can get is 225 rwkw.:)

Not me, 310 rwhp = 231 rwk, best I can get is 225 rwkw.:)

Yes well 230rwkw is the most i can get with these injectors... They said that my fuel flow was good but pressure drops.. said i might have to hook my fuel pump up to constant power with relay.. does that mean anything to you Sydkid ??

It did make 240rwkw but it was knocking too much.. need to fix the fuel issue before i go chasing more power.

Yes well 230rwkw is the most i can get with these injectors...  They said that my fuel flow was good but pressure drops..  said i might have to hook my fuel pump up to constant power with relay..  does that mean anything to you Sydkid ??

It did make 240rwkw but it was knocking too much..  need to fix the fuel issue before i go chasing more power.

Yep, makes sense, the standard wiring is too small and can't handle the current that a large fuel pumps draws. I use the standard wiring to switch the relay and supply it with solid power straight from the battery. I use a 30 amp fuse at the battery to protect from busted wiring, that's what an 044 needs anyway.

Be careful with the standard fuel hoses, clamps and pipes as they are not designed for 50 psi.

:)

The thing that confuses me is how you get so much power out of such a turbo.

I had the same turbo as magic1 (Gt30 .82 rear), Stock head, stock injectors (hi flowed to make 420rwhp) and this was my power curve.

The 1st pic is the re-tune with new engine. 2nd pic is of the old engine with the tune. As you can see we had to run such hi boost to achieve that power level. I dont know why but i believe it may to with the turbo and stock cams.

Then i see the figures steve sst makes with stock head or less boost.

My dyno was not in shoot out mode not sure if it will make a big difference how ever.

Could some one explain why or how steve sst can make so much power from these turbos??

I dont think it could be the difference in the computer (i used microtech).

My whinge.

I guess it comes back to the turbo - I'm getting 330rwkw at 21PSI - Boost drops from 25 PSI (at 4000rpm) to 21 PSI. (at 6000 RPM) If I run 21 PSI base boost, I get same power - no boost drop.

What my thinking was, that if I increase boost to the 25 PSI, I will see more power - but there must be some other restriciton - can could be Exhaust, W/G, Turbo, etc.

Am running trust Type R Ex. W/G (45mm, 18 PSI spring pressure) and Turbosmart E-Boost - that's a pretty good combo.

I guess it comes back to the turbo - I'm getting 330rwkw at 21PSI - Boost drops from 25 PSI (at 4000rpm) to 21 PSI. (at 6000 RPM) If I run 21 PSI base boost, I get same power - no boost drop.  

 

What my thinking was, that if I increase boost to the 25 PSI, I will see more power - but there must be some other restriciton - can could be Exhaust, W/G, Turbo, etc.

 

Am running trust Type R Ex. W/G (45mm, 18 PSI spring pressure) and Turbosmart E-Boost - that's a pretty good combo.

Have you tried dropping the exhaust? That will tell you if that's the problem. The next test is boost before and after the intercooler. If the there is a restriction there it will cause the symptoms you have described. You may also need to measure the restriction in the turbine, it may be getting so high that it matches the boost coming in. And then there is the airfilter question.:)

Have you tried dropping the exhaust?  That will tell you if that's the problem.  The next test is boost before and after the intercooler.   If the there is a restriction there it will cause the symptoms you have described.  You may also need to measure the restriction in the turbine, it may be getting so high that it matches the boost coming in.  And then there is the airfilter question.:D

Also,

Do you have a blow off valve that could be leaking boost ??

Ok.... I was scrolling though the forum as usual and I found this post by Magic1 a while ago.

That thing that really caught my eye was the "Bigger then factory" are they really running stock injectors? So the question remains....

magic1

Registered User

Name: tristan

Age: 24

Location: perth

Car(s): R33 GTST

Join Date: Jan 2004

Trader Rating: (0)

Bigger RB25det injectors

--------------------------------------------------------------------------------

Looking for 6 clean RB25DET injectors, bigger than factory. Anyone got any? Please PM me.

Regards

Tristan

__________________

511rwhp - Much more than GTS-t VSPEC

Just trying to keep it between the ditches

http://dynamic-www.skylinesaustralia.com/f...=rb25+injectors

Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • It's unfortunate what Tomei USA has done to Tomei's name in general. I'm very weary of ordering parts from them now. I only order direct from a Japanse source (e.g Nengun). At least their logos are different, so you end up knowing what you have. 
    • Update Issues 5 (plus #4) - 10 After making a claim about issue #4's missing part, DeAgostini Japan sent a whole new issue #4 and it arrived about 2 weeks after that. That was back in early March. It took another 4 weeks to receive issues 5 - 13 though. This update is for issues 5 - 10. Ove the 5 issues the front left suspension and most of the engine have been completed. The quality of the castings and fit of the parts is quite good, it seems better than DeAgostini's BNR34 Skyline GT-R from the Fast & Furious 2 movie, which (to me anyway) doesn't seem to have as tight tolerances or quite as accurate castings.  Each issue has a lot of info about the 1989 - 1993 Skyline range and other Nissan models from that era, but the focus is on the BNR32 Skyline GT-R Nismo and the various racing it did in Japan, Europe (Spa 24hrs) and of course Australia. I've included some text translated with Google Lens in some photos and will add to them if there's anything worth including. 
    • If it's for a SR20, make sure it's not the American Poncams, might as well call them Poocams. Had a set in a friend's car, all scuffed up after a few track days. Like the metallurgy Tomei USA used is junk. Went back to JDM OG Tomei Poncams, no issues till now.   Tomei USA is not the real OG Tomei.   Random rant over, fk the US of A, bunch of c u n t s. 
    • Most of the industry in North America either runs on Siemens or Allen Bradley. I have two redundant S7-1500's on my desk right next to me for simulation. Siemens has been losing ground though since Stuxnet, as cybersecurity is a big thing. In my line of work that is federally regulated, you must by law have a cybersecurity management program in place and its audited and inspected every so often.  I work with Emerson PLC's daily (RX3i's) and have done large biogas/refinery projects with their DCS's. Their PLC's are somewhat OK minus the way they do PLC redundancy (You have to download on both PLC's separately every time you make a change )  As for their DCS's... you'll be limited financially first before anything else stops you. Costs are exorbiant at roughly 10x what it would cost you to do with any other system (e.g AB PAC).  1990's, those suckers are brand new haha! Kraft-Heinz (An old client when I use to work for an ESP) still runs Siemens TI505 PLC's from the mid 80's. Ohh how I don't miss working with those... you could only do a certain number of online downloads until it's "Change" buffer would be full and you would then need to go offline to do a full download. There was no warning of when this was coming up and it generally would happen when you would go in at 2am to make changes before production -_-.     
×
×
  • Create New...