Jump to content
SAU Community

Recommended Posts

Being realistic, How much difference do you think you would see on a Rb 26 with aftermarket turbos, say 2530's?

If its anything like VCT on/off difference on a 25, then there are certainly benefits, but as with all its cost... Which certainly sounds reasonable too :D

3lt + vct... mmm let the fun continue.

We are looking into an rpm box for you guys.

have you thought about adjustable intake and exhaust? or just intake?

i assume if you did an adjustable exhaust you would require a crank trigger for timing and a computer to support it though.

Crank triggers are available easily enough from a Sydney shop, they're almost done with a version 2 which is direct plug and play for power fc. Version 1 worked well but like anything they found where improvements could be made

If its anything like VCT on/off difference on a 25, then there are certainly benefits, but as with all its cost... Which certainly sounds reasonable too :D

3lt + vct... mmm let the fun continue.

I can think of a certain setup it would be good on!

Being realistic, How much difference do you think you would see on a Rb 26 with aftermarket turbos, say 2530's?

Huge difference. Up to 1000rpm better boost response and an extra 40 odd HP through the entire midrange

have you thought about adjustable intake and exhaust? or just intake?

i assume if you did an adjustable exhaust you would require a crank trigger for timing and a computer to support it though.

You cannot really do two due to the way it is activated and you are only increasing/decreasing overlap so having both going is pointless.

meh, the 30 is always going to make more power sub 5,000 rpm but 5,000-8,000 I reckon the 26 will make at least as much. when you're up it there's not much time spent sub 4,500 or even sub 5,000 in a GTR. if it's a track car and you take the 26 to 9,000 (which is easily done with just some valve springs really) then see how the 2 compare.

don't get me wrong. I like the 30s and they have their place. for certain applications they are better than a 26. but not in ALL applications. both engines have their ups and downs.

don't forget as well daniels engine is a fairly basic 26 build. pretty much blueprinted, N1 type engine with mild cams. I'm sure with headwork etc it could probably make even more. but shit who really needs more than 400kw atw????? it's a road car after all and a fking nice one at that. it's not just the 400kw, it's the fact it's a 1 owner since new Nur, low kms, immaculate body and interior, and all the nice bits like big Alcons front and rear, hand made midori titanium exhaust and on and on the list goes. *sigh. such a nice GTR.

we saw that comparo with rockabilly's rb30 which had 100hp more than his mates rb26 on that track yet the 26 was pulling away on the straight.

in regards to VCT - reason its not that popular (although making a lot more headway after talking to paul diemar) always comes down to bang for buck!

Crank trigger, E85, -5's, stroker and VCT. The starter motor is almost going to bring these babies on song!

HKS has a exhaust version of their Vcam. Have not seen it for sale yet. Yes it would be an improvement but would it be the significant gain like we see with the inlet?

You cannot really do two due to the way it is activated and you are only increasing/decreasing overlap so having both going is pointless.

BMW must have seen benefits to controlling both cams as they changed from single to dual vanos with the s54.

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

    • My hold point for future mods is that I want a OEM detachable hard top first, but, finding one is a pain, MX5 Mania are looking for one for me, but, as hens teeth are more common, finding one in Australia is proving problematic  I can get a OEM one from overseas, hell, you can still get new ones in 'Merica, but, shipping is a absolute killer and I cannot justify the cost, or the risk of it being damaged during transport As for the aftermarket hardtops, whilst they do the job of being a hard top, and are fine for a track car, they don't seal well (read: leak like a sieve in the rain), and you need a plastic/poly rear window, plus they are a bolt in option only and not made to be easily removed I liked how the hard top on my NB could be fitted, and removed, by myself, in less than 5 minutes I know it sounds bad, but I'm waiting for someone to write off a car with one so I can swoop in on their pain, it will go to a good home though, so my guilt of this is tempered
    • I’ve got one on mine and it’s fine, 
    • No, you don't want to plug the vacuum line, as that will turn that side of the booster into an air spring and probably make it feel worse. I'm not saying that the GTR master itself doesn't need a booster. I haven't paid attention to the GTR one to know what size it is cf the non-GTR ones. But when you think about it - they have to do the same job, which is to move a little slave piston a few mm to do what it is supposed to do, and that final action is the same on all the cars. So, it is very unlikely that the GTR MC is any different than the others, because it has the same pedal stroke and the same output requirement. The booster just makes it feel easier. I'd suggest you probably have an actual hydraulic problem. It's totally common on these old shitboxes.
    • Ye, in terms of bolting up the "Conversion" from a GT to a GTT is effectively "Use GTT parts for everything" Except the subframe itself, because you won't want a HICAS/4WS subframe. Remember your ABS system will be different too, thanks to GT being the S15 3 sensor system, instead of the R34 4 sensor system for wheel speed. I do not know how people get this to work given R34 diffs do not have a provision for an ABS sensor (they are on the tone wheels of the axles). I assume***** people use S15 gear/R34NA forever when they realize this - Or they convert it to a rear diff/axles that are R33 style which I presume has the singular speed sensor on the diff itself, but then you have to wire it all in and...and... and...
    • Foreshadowing was never so easy.
×
×
  • Create New...