Rb27/ Rb28 Vs Staying Rb26

[Count Grantleyish]

In that case, grab pair of -5s, people have better results with these than RS/-10s on both 2.6 and strokers.

[XGTRX]

people stay 2.6 for 2 reasons, they are tight asses and don't want to spend an extra $1000 on a rebuild (which means they should never have bought a Gtr in the first place)

Biggest load of rubbish I have ever heard. f**ken tight arses! Who the f**k do you think you are.

I say if people don't like a 26 then don't buy a gtr.

The 26 is more than capable in every way.... Dickwad.

[iruvyouskyrine]

Not sure if serious....

[r32-25t]

Hit a soft spot there?

[ibrox90]

So back on topic.

Apart from cost what are thr draw backs of going to a 2.8?

Drawbacks of staying 26?

Others please put your handbags away

Also into my original question can anyone comment on "feel" between the 2 ?

Edited August 23, 2015 by ibrox90

[GTR_JOEY]

Yea you can

[Piggaz]

Some would argue the side wall loads with the shorter rod to stroke ratio. Meh, by the time that would really become an issue you would have sold the car or you would have given it a freshen up anyway.

Then there is the argument of "revving" which is dribble.

There really isn't a downside as such, unless you don't like more low to mid range punch.

A 77.7 mm crank should be the smallest you should go. To spend all that money and go to a "2.7 / 75.7 mm" seems a bit of a waste. If you're considering building a 2.6 why not just throw in a good condition stock engine. Look at Fatz.

By the time you buy rods, pistons, possibly a new stock crank, paying for machining and assembly only to have an engine that will drive almost identical to what you had. (Save for comp ratio increase or minor stuff like that) Why would one do that?

Stroke it! 2.8 or 2.9 and enjoy some much needed midrange twist that they so desperately need.

[KiwiRS4T]

You mean the tubro upgrade page.... that ive already said this isnt about..... or .......

I guess you haven't actually read any of that thread. If you had you would have seen that although it is labelled turbo upgrade thread it actually includes a number of rb26 rebuilds and compares more than just turbo choices. You will see some who have reconditioned with stock components and some who have forged engines etc etc - in short people who have made the deliberate decision to stick with the Rb26 - people you thought didn't exist.

[r32-25t]

Basically if you want to spend a load of cash to have something that's drives exactly the same as it did before leave it as a 2.6

Or for a little extra you can stroke it and have a car that's nicer to drive, easier to drive and faster to drive

[XGTRX]

A forged 26 is far from a stock 26. Don't listen to all this dribble. You can pound a lot more boost into them, and with head work, proper balancing and blue printing and oil control mods you can rev them safely, so yeah you can run big power numbers reliably. You don't need larger capacity to do this, everything just happens a bit higher in the rev range thats all.

[r32-25t]

i didn't realize a forged piston and rod could make a turbo come on boost earlier then a cast item

[Mick_o]

A forged 26 is far from a stock 26. Don't listen to all this dribble. You can pound a lot more boost into them, and with head work, proper balancing and blue printing and oil control mods you can rev them safely, so yeah you can run big power numbers reliably. You don't need larger capacity to do this, everything just happens a bit higher in the rev range thats all.

Lol dont listen to the lag man! He thinks the midrange is above 5000rpm!

[XGTRX]

i didn't realize a forged piston and rod could make a turbo come on boost earlier then a cast item

Well if you are putting 25% more boost into a forged engine it is natural making more power at a given rpm isn't it? Even with everything else being equal. On top of that you tickle the head and so on and its a totally different beast. Doesn't matter how you look at it, its not the same as a standard engine as you are trying to convice the op it is. You guys are either delusional or full of shit.

[r32-25t]

But what you're saying is it doesn't come on boost earlier, just makes more power because of the extra boost you put in it?

[ibrox90]

I guess you haven't actually read any of that thread. If you had you would have seen that although it is labelled turbo upgrade thread it actually includes a number of rb26 rebuilds and compares more than just turbo choices. You will see some who have reconditioned with stock components and some who have forged engines etc etc - in short people who have made the deliberate decision to stick with the Rb26 - people you thought didn't exist.

FFS mate go back and read the original post. Where are the opinions ? wheres their thought processes?

oh look new thread.

There's some awesome info in here and a lot of what I've wanted and varying and differing opinions which is great.

However as always with SAU lately it just turns into a cock measuring contest full of knobs presenting their opinion as fact and the cocky i know everything types.

Some solid info here.

As for a forged 26 being the same as stock and feeling stock..... surely with strong components one would fire in more boost( air), more fuel and more revs. So its more of an animal.

Does anyone find that while the 2.8 is larger capacity and more low down torque that it feels at all sluggish being larger capacity? Like does the longer stroke inhibit its capacity to rev freely .

my issue is in the back of my mind.... if the 2.8 is so ducks nuts awesome...... why did nissan build a 2.6........ if all it needs is a different crank.....

Edited August 23, 2015 by ibrox90

[r32-25t]

No they still feel punchy and ready to go, they just do everything easier due to the extra capacity

People go from a 2.6 to a stroker but no one goes from a stroker back to a 2.6

Nissan built a 2.6 due to the regulations they were running in while designing the r32 Gtr, but if you look at the nismo special models (400r, ztune) they have factory 2.8s in them. So even nismo can see the benefit of having the extra capacity

[Piggaz]

Nissan used a 2.6 L engine because of the group A rules at the time. If you look at the R34's they were using 2.8 L engines.

As for this "rev" thing, WTF. Look at the length of strokes in some of the Honda engines. They have no issue spinning to the moon.

2.8 engines even the 85 mm stroke of a RB 30 isn't particularly long.

All jokes aside, if someone said I had to go back and use a 2.6, id sell the car.

[QUP29]

I know of a stroker 2.8 that lives at 11,000rpm

My 2.7 lives at 10,000rpm

If my engine was to let go I would go 3.2

Edited August 23, 2015 by QUP29

[breaker1845]

The price you'll spend on the rebuild/refresh of an RB26 you may as well go the extra and go for the RB28 if you are determined. The car won't be sluggish and you'll enjoy the low down torque more and response you get from the car.

If you didn't have to do a rebuild I'd say stay with the motor you have and just put on a nice set of twins and supporting mods for it and you can enjoy a nice response street car. Then you can improve other components of the car like steering and what not with the cash you didn't throw at a rebuild to get it driving well.

[XGTRX]

But what you're saying is it doesn't come on boost earlier, just makes more power because of the extra boost you put in it?

Just look at the post you wrote below

Basically if you want to spend a load of cash to have something that's drives exactly the same as it did before leave it as a 2.6

One of the stupidest things I have ever read as you are implying that any engine that is rebuilt properly to the original capacity with forged internals has no benefit. Of course it is different as I have already mentioned.

Yeah and of course its the extra boost, if you can make 10psi more at the same rpm and keeping it there for longer, that's what's its all about isn't it. Just because with a stroker boost comes in 500 rpm early, doesn't mean a forged 26 drives the same as a stock 26.

Don't make up crap just to justify your own delusion or to lie just because you have a preference to stroker's characteristics. If you believe your above post then you know nothing and should not be recommending anything to a guy who wants honest advice. Your above post is just stupid.