Jump to content
SAU Community

How To Tell Rb20Det Pistons Apart

Driftnuttz

By Driftnuttz,
in Engines & Forced Induction

 Share

Recommended Posts

The Dan Grand Master

The Dan

Posted
Posted

Building up a rb20det.

I have done some head work and shaved about .040 off to raise the comp ratio....... I hope they are not na, cause that might cause problems....

0.040?

I hope you have a good tuner and great fuel

Driftnuttz Enthusiast

Driftnuttz

Posted
  • Author
Posted

Running stock cams, hx35, and tunning should be fun. I have 93 octain here in the states and can get my hands on race gas. If you see the way the head is made, you will see that shaving that much wont rais the comp up that much. I am looking for 9.0-9.5 to 1. I wont beable to run the same timing, but I wont need to. I should also see boost sooner now, and off boost power will be better.....

Driftnuttz Enthusiast

Driftnuttz

Posted
  • Author
Posted

Do they sell methanol at the pump :)

Curious to see ur results. I have a rb25/30 here than has 1mm off the head but we will be running that N/A

The rb25 head will see a higher lift in compression when shaved. I am still cleaning the combustion chambers to avoid det from hot spots. Should be putting the head together in the next week or so. Then its on the block and in the car. I will be posting my results here.

Anyone know of any good tuning software that is free or cheap? I have a buddy that is going to lend me his tuning know how, but only uses an power fc right now. I am going to use a chip. I have romedit, just kinda looking to see if there is any more out there.

The Dan Grand Master

The Dan

Posted
Posted

The rb25 head will see a higher lift in compression when shaved. I am still cleaning the combustion chambers to avoid det from hot spots. Should be putting the head together in the next week or so. Then its on the block and in the car. I will be posting my results here.

Anyone know of any good tuning software that is free or cheap? I have a buddy that is going to lend me his tuning know how, but only uses an power fc right now. I am going to use a chip. I have romedit, just kinda looking to see if there is any more out there.

The EPROM isn't programmable from factory so you will need to install a Nistune or similar

Driftnuttz Enthusiast

Driftnuttz

Posted
  • Author
Posted

The EPROM isn't programmable from factory so you will need to install a Nistune or similar

I will be socketing the ecu and burning chips. I plan on using an emulator to tune and then burning a chip to use when not tuning..

Driftnuttz Enthusiast

Driftnuttz

Posted
  • Author
Posted

No offense intended but why, we were burning chips 10 years ago, nistune is so cheap, the emulator will cost more, and the old school tuning stuff is slow and clunky

When did nistune only cost 150? Look a chip is just as good as a off the shelf ems system, minus a few things. People make crap loads of power on chipped ecus all the time.Even nistune is just lick a chip, it replaces the chip with a small board. Is it the best way to tune? no But it is cheap..

N1 RB26 Contributor

N1 RB26

Posted
Posted

if you've got your own tuner you can pick up nistunes for like 450 check it out here this is for RB20 http://www.nistune.com/equipment-products-type2.php plus you get live tuning and data logging go have a read on the home website...if you ask me the extra 300 bucks is well worth it less of a pain in the ass plug it in and away you go :thumbsup:

Driftnuttz Enthusiast

Driftnuttz

Posted
  • Author
Posted

You still have to do the same stuff. Remove the chip in the computer, and add the board. Maybe you get a bigger map (16x16 is what I will be working with), thats not worth it to me. I will be data logging with consult and a laptop.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Duncan
      V37 Radiator removal

      By Duncan · Posted

      So, this shouldn't be such a mission, but there were a few tricks so I thought I'd post up a DIY for it. This was on a Q50 Red Sport but I doubt any other V37 model is very different (maybe just less steps for the intake heat exchanger hoses) I pulled the radiator out to flush it because the car was running hot at the track, but obviously the same steps apply for changing a radiator for any reason including an upgrade. If you are removing the radiator, you of course need to drain and refill, so have 5+ litres of blue coolant ready. You don't need to drain the intake heat exchanger to remove the radiator but depending on your plans you may need a couple of litres for that as well. You will also need something to deal with the auto transmission lines, I used 2x 8mm rubber caps on the radiator side, and a short length of 8mm pipe on the car side.....unless you can block these lines quickly you will loose AT fluid and it may be enough to hurt the transmission if you don't refill it. Other than that....lets go... "First, jack up your car". Yes really, and put it safely on stands. If you are not confident doing that you need to give this job to a mechanic
    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      If the forester is anything like our old 2007 GTB Liberty, I could near on run ling Long's and "rate them", as no matter what, it just hung to the road, even when abusing it in a hard launch in the wet, or throwing it at corners.
    • The Bogan
      NC MX5

      By The Bogan · Posted

      LOL, all of the CAI like Craig I just need to put a hole saw through my bumper Done and dusted, the car runs, which is nice, I'll take it for a spin when the weather clears up Just need to put the bumper back on for good
    • EndZee
      R33 Gts/-t Abs Module Wiring Schematic (not Gt-r)

      By EndZee · Posted

      Brooooo Please send ABS control unit schematic Please! R33 gts25t ABS (Its two plug ecu, black and white) wire colors possible? [email protected]
    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
×
×
  • Create New...