Jump to content
SAU Community

Rb26 or rb30???

Old man 32 GTR

By Old man 32 GTR,
in Engines & Forced Induction

 Share

Recommended Posts

Stixbnr32 Rising Star

Stixbnr32

Posted
Posted
10 hours ago, Piggaz said:

-5’s are too BIG for a 2.6. My god they’re a heap of shit to drive on a 2.6. Again, have you driven that setup? You’d be pumped to the moon and back by a euro hatchback.

I wouldn’t piss on those new journal bearing shitheaps from HKS. Waste of time.

You may be only looking at where they “fall off”... but how they drive and how the come on is chalk and cheese.

The GTR is a big, heavy heap of shit with tall gearing with the 5 speed and can’t be helped by any “smarts” in the engine bay (like VCT). It’s a small stroke, low comp donk with a dumb head. It needs all the help it can get to push around that pork!

It’s ok, I own one, have had for 15 years. But to own one with a 2.6 is a no go for the above reasons.

hahaha i really need to drive a single turbo 2.6 to see what its like.   I have a 400kw R32 with -5's and although i know they are laggy i dont find it a pig.  I suppose you dont know what you dont know right :P 

 

  • Replies 62
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Piggaz
Piggaz

-5’s are too BIG for a 2.6. My god they’re a heap of shit to drive on a 2.6. Again, have you driven that setup? You’d be pumped to the moon and back by a euro hatchback. I wouldn’t piss on those

Dose Pipe Sutututu
Dose Pipe Sutututu

Just top it up and off you go again, has a VW or Audi feel to it. Every time you fill up your fuel, top up your oil & water 🤣

r32-25t
r32-25t

Yep   Just been doing this, taking it to gtr fest on the weekend and then parts I’m replacing start coming off 

joshuaho96 Veteran

joshuaho96

Posted
Posted
11 hours ago, Piggaz said:

-5’s are too BIG for a 2.6. My god they’re a heap of shit to drive on a 2.6. Again, have you driven that setup? You’d be pumped to the moon and back by a euro hatchback.

I wouldn’t piss on those new journal bearing shitheaps from HKS. Waste of time.

You may be only looking at where they “fall off”... but how they drive and how the come on is chalk and cheese.

The GTR is a big, heavy heap of shit with tall gearing with the 5 speed and can’t be helped by any “smarts” in the engine bay (like VCT). It’s a small stroke, low comp donk with a dumb head. It needs all the help it can get to push around that pork!

It’s ok, I own one, have had for 15 years. But to own one with a 2.6 is a no go for the above reasons.

I flipped it backwards, -5s are too big, correct. But GT3-SS turbos are tiny, 0.54 a/r exhaust turbine which is tighter than any other turbo out there. They nose over hard on 2.6, so the concern is that a 2.8 will just shift everything down a few hundred RPM and make the engine feel like a Mazda 2.5T where the power falls off a cliff well before redline.

The HKS turbos may be a waste of time/money but it's already too late, the turbos are bought for and installed so I'm just going to see how they go. The engine isn't at the point where the bottom end is going to be taken apart yet so it's going to just be a 2.6 for now. I have a VCAM step 1 sitting in the garage so that can be a first attempt to try and get the VE up earlier to spool the turbos. If that doesn't get the desired powerband then I'll think about a stroker or RB26/30.

I'll post dyno charts and data logs as I work through this, if it sucks you guys can have some fun pointing and laughing.

r32-25t Grand Master

r32-25t

Posted
Posted
2 hours ago, Stixbnr32 said:

hahaha i really need to drive a single turbo 2.6 to see what its like.   I have a 400kw R32 with -5's and although i know they are laggy i dont find it a pig.  I suppose you dont know what you dont know right :P 

 

You going to gtr fest on the weekend?

Shoota_77 Veteran

Shoota_77

Posted
Posted

I must say my car back when it ran was a laggy bucket of shit on the -5's but at the same time goddam it was fun once the boost kicks in!!

This is a weird statement to a degree but the better a turbo setup is, the worse it feels!!  What I mean by that is a smooth power curve from low down in the rev range doesn't have anywhere near the wow factor of a laggy turbo when it hits it's happy zone.  The better sorted car will be a waaaaaay better and quicker car (until high in the rev range anyway) to drive but it just doesn't have that raw "Holy f#$k hang on boys she's off" kind of feeling!  I drive a lot of the modern turbo cars that would be way faster than my car but they're boring AF compared to a laggy turbo coming on song!

GTSBoy Grand Master

GTSBoy

Posted
Posted
54 minutes ago, Shoota_77 said:

This is a weird statement to a degree but the better a turbo setup is, the worse it feels!! 

Traction is the other thing though. When you have a knife edge boost response at higher rpm, the sudden transition to torque and power is more prone to make the tyres break. It is so much better to be applying torque to the road at lower rpm and gaining speed, Makes them tend to stay stuck to the road for longer. Not to mention it is more modulatable.

Old man 32 GTR Proficient

Old man 32 GTR

Posted
  • Author
Posted

My thoughts are this, and I’m still torn here. But 

you wouldn’t get a Hakosuka GTR and pull the engine out (it has been described as the laggiest NA motor ever produced) and drop an SR20 into it, then say, it drives much better. 
this would probably be true, but you’d be missing the point. 
Now, I’m not saying our cars are at that same level, but I believe they are going in that direction. So I’d like to try to get my car when I want it, while it is still somewhat affordable (should have done it a couple of years ago) lol 

At this point, I’m even considering putting a getrag in it, over a sequential. 
but we’ll see where things go. 
As Piggaz said, they are a big heavy bucket of shit! 
but isn’t that why we love them, Clarkson said, it’s the flaws and imperfections in a car that we bond to. If it was perfect, it would be boring. 

Darmanin10 Mentor

Darmanin10

Posted
Posted

Performance wise, bigger is always better. More torque, easier power.

But I was told by my engine builders that the 30 blocks are not as good for circuit work. Something to do with the harmonics I think? Anyone heard similar?

Therefore I built a 2.6 and didn't go stroker mostly due to cost, as I wanted to keep it simple and reliable as possible on the track. Probably should have gone a 2.8, but I wouldn't have been able to help myself, and I would have gone bigger turbo, sequential etc etc

GTSBoy Grand Master

GTSBoy

Posted
Posted
13 minutes ago, Darmanin10 said:

30 blocks are not as good for circuit work. Something to do with the harmonics I think? Anyone heard similar?

It's not really the block, at least wrt the harmonic issue. The 30 block is certainly not as good as the 26 (typically, on average, there are always examples at each end of the bell curve) simply because it is taller. The squatter shape of the 26 block makes it stronger in a few places where it counts.

The harminic issue is in the crank. This can be minimised with a billet crank and upgraded balancer, as well as careful tolerancing etc etc. Every last detail helps kinda thing.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
25 minutes ago, Piggaz said:

Isnt your car pushing water with a busted head gasket?

Just top it up and off you go again, has a VW or Audi feel to it. Every time you fill up your fuel, top up your oil & water 🤣

  • Haha 3
r32-25t Grand Master

r32-25t

Posted
Posted
3 hours ago, Piggaz said:

Isnt your car pushing water with a busted head gasket?

Yep

 

3 hours ago, Dose Pipe Sutututu said:

Just top it up and off you go again, has a VW or Audi feel to it. Every time you fill up your fuel, top up your oil & water 🤣

Just been doing this, taking it to gtr fest on the weekend and then parts I’m replacing start coming off 

  • Like 3
SiR_RB Grand Master

SiR_RB

Posted
Posted
6 hours ago, r32-25t said:

Yep

 

Just been doing this, taking it to gtr fest on the weekend and then parts I’m replacing start coming off 

See ya there mate 

 

also recently tossing up going 3L

we went 2.8 high comp shit load of head work and couldn’t be happier 

 

  • Like 3

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

    • The Bogan
      NC MX5

      By The Bogan · Posted

      So, version 4 intake is on its way I was looking at these a while ago but at around $200 or more it was a little pricey for something that might not work, but, I had it in my watch list, but, I got a message saying it was on special, and I had a code thingie to use, it eventually came in at $120 delivered, so BAM, BUY NOW.....LOL I'll need to have a look when it arrives but I feel it will "look" better than what I currently have, as it comes with a PCV fitting, so I will be able to get rid of the alloy pipe that goes to the throttle body with the PCV fitting  Well, that's what the voices in my head are telling me  Oh, and this happened today Yeap, it was a Trojan, and it was cheap, so I headed back to the hardware store and actually spent a little bit more on a heavy duty,  one that was actually recommended by a plumber mate, a Cyclone one with a fibreglass handle that is actually rated for clay The broken shovel will eventually be "modified" into a short handle shovel
    • MBS206
      What should I do next to hold the head on

      By MBS206 · Posted

      When you pulled it off, there is no signs of blown head gasket? Is it possible you have some other issues going on? Possible cracked blocked? Or do you think it's straight up lifting the head? Did you check what the head was torqued to before pulling it down (To see if possibly they're stretching, or starting to break threads out etc)?
    • jez NF
      The Evolution Of "night Fury"

      By jez NF · Posted

    • Rezz
      Chris' Toyota Mark ii JZX110

      By Rezz · Posted

      Seems like a decent result for a modded JZX110. They are bulky in comparison to the 100 and 90 models (which I'd prefer myself) but they are getting very few and far between here in JP these days. Thanks for the detailed review and the import process into the UK. I also have a car which I'm hoping to export from Japan at some stage so it's good to know if someone from the UK was interested in it. By the way the corrosion underneath is par for the course for cars which were located in/near the mountains or along the Japan sea coastline. They get huge amounts of snow every winter and the sodium chloride is used on the roads. Many cars have some kind of rubber like treatment underneath but they tend to limit it to the wheel arches underbody and fuel tank. Suspension arms and sub-frames will have similar corrosion to your JZX110 which is a common sight. See it all the time and car dealers here generally don't even mention it unless asked.
    • Kinkstaah
      new 1.5 LSD issues/concerns

      By Kinkstaah · Posted

      If the sound goes away when you clutch in, the 1.5/2 way diffs are just shit, and you are a normal person. The diff is likely "fine" but driving at anything under 30kmh is a violent horrible experience. It would be exaggerated with solid diff bushings and subframe bushings if you have those.
×
×
  • Create New...