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How To Tell Rb20Det Pistons Apart

Driftnuttz

By Driftnuttz,
in Engines & Forced Induction

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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

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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

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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

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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

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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

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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.

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