Jump to content
SAU Community

Recommended Posts

for the price of motor alone, wouldnt you go close to rebuilding a rb30 block with 26head? you could use the 25 box Aswell? just a thought if your considering rebuilding a front cut.. your only gona use the motor anyways from the cut.. makes more sense to me and itll make more power which is what we all want..

  • Replies 42
  • Created
  • Last Reply

Top Posters In This Topic

for the price of motor alone, wouldnt you go close to rebuilding a rb30 block with 26head? you could use the 25 box Aswell? just a thought if your considering rebuilding a front cut.. your only gona use the motor anyways from the cut.. makes more sense to me and itll make more power which is what we all want..

hey dead32

u end up selling ur torque beast yet?

looks like a few guys in aus have done the conversion.

So that is an RB26 head on an RB30 block? That would go alright. I was talking to a mate who said that RB30 blocks were not so good as they dont have oil squiters under the pistons.

hi guys, i thought of putting a 26 into my 33gtst. Ended up going the 26/30. more tourque!

made more sense when you add up all the costs.

That all depend on what sort of bottom end is being built for IMO.

I chose 2.6ltr with GT-SS, you dont need 3ltrs if you have a good set of turbos like that which come on early enough without the extra capacity.

There has been a prepped sump on Ebay cheap as. Don't ask me to post the link.

Speaking of Sumps Ash, what happened to mine? I don't actually need it since deciding on the 26/30 in the 25t. If it has been moved on has the recipient paid money?

That all depend on what sort of bottom end is being built for IMO.

I chose 2.6ltr with GT-SS, you dont need 3ltrs if you have a good set of turbos like that which come on early enough without the extra capacity.

agreed, ive been in rb26 gts-t's, and the tractability due to the linear power delivery is what i like. imo a rb26/30 would be a beast of course, but also a potential burnout machine! Your already sticking the motor into a lighter car, and as nismoid mentions with some nice responsive turbos makes a good setup. i do see the point of the 30 bottom end as rebuild costs are likely to be similar, but dont think i'd do it personally. Also with the 30 i would imagine you would lose some of the rb26's inherent screamer attitude!

The easy choice though is keeping the revs low for longevity, but still make plenty of tractable power. I've never been keen on revving the guts out of an engine all the time but they can do it. Mikes car up there pulls some decent rpm.

once youve driven a car with a 25/30 or better yet a 26/30...The power curve is very linear and comes on stronger from a lower rpm. Helps produce more mid range or average power...rather then peaky power with lag.

I did the rb26 to a 32gtst. Simple cut the diff off the side, change to the gtst engine mounts and bolt it in. Wiring loom plugs straight in. That it for a r32 but a 33 might be different.

Wave all the info from the talkers to one side. And lisen to the do'ers on the other. Why build a 25/30 when you still don't get solid lifters, you get smaller cams and smaller injectors that you would get bigger with a 26. It will cost you a fortune to build it not to mention the time and hassles. Go the 26's are built to rev and they love it. The old gtst used to launch from still with 255's on the rear in second gear.

Why would you bother rebuilding the motor when you get it. Just use it. See if you like how hard the car goes and base your future mods from there. Why waste money if you don't have to.

Also the comment on front cuts being from track cars is a bit b/s##t.

Most front cuts that come over are almost all stock. Not race motors with bigger turbos/ forged internals/ cams etc.

Also 26's aren't to laggy with the new turbos out now.

This is my opinion from experience but its your call. All I know is there are to many people out there that get caught in the hype!

once youve driven a car with a 25/30 or better yet a 26/30...The power curve is very linear and comes on stronger from a lower rpm. Helps produce more mid range or average power...rather then peaky power with lag.

If you get a nice small set of twins you wont have a "peaky" car with lag or anything at all.

ok..ill better that...how about a nice set of twins with the 3l block under the 26 head? Take a good 800rpm off the lag.

Im just hooked on 30dets... :)

And what, have boost at idle? :)

i dont think i need boost that soon

Haha yeah thats a good call :) But seriously I want to do this, but have to be careful as I'm a poor MCSE (Microsoft) student who works full time thrashing servers and fixing PEBKAC errors. So i don't want to waste money. I got the mad old ex race mechanic to help with the conversion just want to make sure I don't spend my money twice :)

i really like the idea of this thread. So my next question is: what is my engine bay worth!? :)

rebuilt rb25 GTR crank and rods, ACL race series pistons, o-ringed block, stock head with poncams and new valve springs, less than 20,000kms old, stock ex-honed mani, near new full 2835proS HKS turb kit, HKS 555cc injec, new splitfire coils, Z32 AFM and tuned PFC, and the whole lot spotlessly clean and shiny :). Good for 280+rwkw.

Would parting it out get me much more than selling the lot as a whole, and would it be worth the hassle selling a whole load of items separately?! (bear in mind im not even in the country, lol)

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

    • You'lll likely have to make do with R33 GTR for engine/tranny stuff, and Stagea for the body. I don't know that there's even been an actual diagram seen in the wild.
    • Haha, i kow right? Could have bought so many cars for the same amount of money (or less) but driving Unicorn gives you at least +1mln to style 😅. Like wise man said "life's to short to drink cheap wine and drive boring cars" 😉
    • Newbie here, proud owner of an Autech 260RS. I'm on the hunt for wiring diagrams specific to the 260RS, particularly S1. I've ran my eyes through R33, R34 Diagrams, there are some similarities, however continue to find incorrect wire colours and pins on connectors in the 33,34 diagrams.   I was hoping someone could point me in the right direction? I'd be happy to pay for the originals in Japanese. I can translate them, at least they would be accurate.   Any help please would be greatly appreciated, never heard an RB26DETT before let alone driven one, and I've got a spaghetti monster of goodness to sort out.   Cheers Benny  
    • Hey all  im wondering if you can help me please I have put a rb20 box in my r34 gtt as my auto packed up and a friend had a spare box I know it’s not ideal but it will get me up and running for now. we have done the conversation and everything is working great but my Speedo we got a s13 speed sensor but my Speedo reads double now and I bought a speed converter but still not having any luck.  so I thought I’ll reach out and pick your brains  any help would be appreciated please as I wanna drive my car again 
    • Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
×
×
  • Create New...