Jump to content
SAU Community

Recommended Posts

From your personal experience, what normally comes out on top? What's better in low-range and top-range? What pulls off the line better and what normally wins in the end?

I'm asking this because I am considering doing a RB20DET conversion in my auto ca18de because RB's are heaps cheaper than SR's.

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/
Share on other sites

Here is a good comparison

My R32 gtst (rb20det manual)

fmic

3.5" turbo back exhaust

filter

cold air box

15 psi

vg30 turbo

s-afc

bigger fuel pump

My friends 180sx (sr20det manual)

fmic

3" turbo back exhaust

filter

13 psi

gtr fuel pump

Basically both cars are pretty much even up to 150km/h then the skyline gets about 2 car lengths on the 180 up to 220km/h

ALL TESTING WAS PERFORMED UNDER CONTROLLED CONDITIONS BY EXPERIENCED DRIVERS. IT IS NOT RECOMMENDED THAT THESE ACTS BE DUPLICATED ON OPEN ROADS. ALWAYS WEAR YOUR SEATBELT WHEN DRIVING AND HAVE A NICE DAY

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/#findComment-15326
Share on other sites

Originally posted by BOOSTMEISTER

ALL TESTING WAS PERFORMED UNDER CONTROLLED CONDITIONS BY EXPERIENCED DRIVERS.  IT IS NOT RECOMMENDED THAT THESE ACTS BE DUPLICATED ON OPEN ROADS.  ALWAYS WEAR YOUR SEATBELT WHEN DRIVING AND HAVE A NICE DAY

hahahhaha *cough* bullshit *cough*

well think of this .. with the money u save on gettting the rb20det, u can get a new turbo or ecu or whatever u want.. then which will be quicker??

engines both have there good and bad points.. sr20det is an alloy block adn the rb20 is the cast iron... sr20det has a timing chain rather than a belt.. rb20det is a 6cyl thus more torque

both engines are bloody awesome.. but it always goes down to money in the end... :P

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/#findComment-15336
Share on other sites

That's the big factor in all things I recon...bang for your buck... if you go the rb then you need a engineer cirt because you go from 4cyl to 6cyl......I have personally done this conversion so if you need any tips let me know.

I would probably go for the rb for the torque...

URMINE hows your heater going?

Cam

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/#findComment-15338
Share on other sites

Thanks for all your help guys. On the High Performance Imports video Vol 3. (currently being borrowed by me off a friend ;) ), they show a S13 Silvia with a VG30DETT in it. Pretty PHAT I reckon!

And I'm not going to spend the money on my current ca because it is non-turbo. Spending 2k on my current engine, would that bring it up to scratch with a rb20det (serious question)? And I definantly won't be putting a rb25det into it because of the cost.

Also, boostmeister, what has to be fabricated/welded/altered to put the rb20 in the S13? I've heard that the heater hoses have to be altered and besides everything in the halfcut, you'll need a rb tailshaft and a bigger fuel pump in the tank. Is that it?

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/#findComment-15446
Share on other sites

Guys stock for stock The Rb has less toque than the sr20det and will always be less torque. six 8 or ten cylinders dont matter as the stroke on the Rb20det is very very short. Good for revving but thats about it.

Rb25det is the way to go.

Sr20det has a timing chain and roller rocker arm style setup.

Alloy block is light but there is so much alloy there that it doesnt make a big difference.

Rb20det is a tough motor. But so is the sr20det.

I say different strokes for different folks. LOL

Link to comment
https://www.sau.com.au/forums/topic/661-rb20det-vs-sr20det/#findComment-15936
Share on other sites

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


  • Similar Content

  • Latest Posts

    • A locally delivered Infiniti have remote start installed but don't come with the remote start key. You need a new remote start key and they just need it programed. And this is different to making/programing a new key that just starts the car.  
    • Cheers, and cheers for sharing so much of the build and also sharing the glimpse of what turns out to bring a lot of us poor decision makers together haha.  I do recommend learning more about how to manage it, if not considering getting a  formal diagnosis.  The discussion with the psychiatrist I got my diagnosis through was quite eye opening, things I'd not even considered to be ADHD related and hadn't mentioned were things she asked about out of the blue and were common themes with people with my flavour of ADHD.   It's not a label for people who are hyperactive and ill-attentive, there's more to it than that and some of it can be much more challenging or damaging - though there are of course two sides to the thing, and a lot of the stuff we have to go through and work on to live with it make us effectively "better" at other things as well. Aside from the fact that there is some argument I could have a bit of ASD seasoning in there (came up during the diagnosis, and neurodiverse things seem to not stay as a cookie cut) I suspect you need to learn more about ADHD if you are puzzled about how hyperfocus could possibly apply.  I *do* personally use "superpower" with quotes deliberately, but it's 100% an ADHD thing due to the exact reason that lack of focus is also an ADHD thing... Loosely speaking the inattentive side of ADHD isn't the inability to focus, it's the inability to control where the focus goes.  Not being able to sleep because brain is more interested in thinking about a stupid thing I said to a girl I liked 30 years ago, not being able to focus on work because my brain is more keen on putting together the torque management strategy we're going to try out with a drag car next weekend, not being able to focus on a conversation with someone I WANT to listen to and respect because there is a flickering light in my peripheral vision.    If I could just stop work and build the torque management setup right there and then I'd not hear anything else until it was done.  
    • Maybe you should do some more reading.  Google positive effects of ADHD and you'll get your answers.  One of my personal downsides of ADHD has been talking before I think.   Maybe you have it too?
    • Excuse me for butting in....but which part of ADHD can be considered a superpower? I would have though it far more likely that some ASD comorbidity is more likely to be contributing to an ability to hyperfocus on something. ADHD being aimed somewhat in the other direction. My shed looks like your shed. My whiteboard list of unfinished projects has entries going back 15 years. I know what you're talking about - I just struggle to connect ADHD to the results being discussed.
    • Thanks for reaching out!  It's a blessing and a curse at the same time.  I'm undiagnosed but it doesn't take a rocket scientist to see it in me... I have more half started projects laying around my house, shed, garden, etc taking up space and money, destroying aesthetics than if I added up all of my mates projects together. But, ADHD gives me the ability to hyper focus on things that no mere mortal could even  comprehend.  A recent pool build is an example of that....  I dont know anyone else that would be dumb enough and focused enough to take on then complete something of that magnitude. I call ADHD a superpower but it can equally be completely destructive if not controlled and focusedon the right places. Addiction is a major concern to ADHD people and thankfully my addictions have been no worse than projects, XBOX, chocolate and being an arsehole! It's often hereditary and my 13 year old son is currently learning how to drive it at the moment. Keep lurking! If i can finally finish this bloody thing at some point it will be a win for all of us ADHD'ers! 🤪
×
×
  • Create New...