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RB26DETT N1 or RB30DETT Engine swap

  
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RB26DETT N1 or RB30DETT Engine swap

 
Blakk_Myst240sx Blakk_Myst240sx
New User | Posts: 13 | Joined: 09/09
Posted: 09/09/09
01:20 PM

The RB26DETT N1 and the RB30DETT are 2 of the engines I've thought about swapping.

The N1 RB26 has more power and potenial then the RB30. But the RB30 has a higher
rev limit then the RB26, and isn't less of an engine "compared to the RB26".

I'm just looking for everyone's insight and opinions on the 2 engines.  

_NISMO_ _NISMO_
User | Posts: 225 | Joined: 02/09
Posted: 09/09/09
02:33 PM

RB26.  The rev difference isn't that large.  And you have boost for a reason...  
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16psi on stock turbo and fuel, ARP Head Studs, 3" Turbo back, Greddy BOV, SBR 3500 Clutch Kit, 11lb Chrommolly Flywheel.
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Daily: 2000 Honda Accord Coupe F23A1 VTEC
Project: 1995 Eagle Talon TSi AWD

Blakk_Myst240sx Blakk_Myst240sx
New User | Posts: 13 | Joined: 09/09
Posted: 09/09/09
03:07 PM

Correct me if I'm wrong. But can't both engines get tuned for boost??

And 11000RPMs vs. 8000RPMs isn't considered a big diff in rev limit?  

Jimmy Pham Jimmy Pham
Administrator | Posts: 396 | Joined: 08/08
Posted: 09/09/09
05:22 PM

11K is only possibly on a fully built engine meant for a drag car, that needs to be rebuilt like every day. RIPS makes kits that do go that high, but expect to pay to play. OS Giken only recommends 9,000RPMs on their RB30DETT kit. Turbo engines really don't ever and shouldn't need to rev that high, too many variables come into play when tuning. Higher stress of high rpms operations + high boost = problems.  

_NISMO_ _NISMO_
User | Posts: 225 | Joined: 02/09
Posted: 09/10/09
02:33 PM

"Turbo engines really don't ever and shouldn't need to rev that high, too many variables come into play when tuning."

VERY well put, sir.. Laugh  
----
16psi on stock turbo and fuel, ARP Head Studs, 3" Turbo back, Greddy BOV, SBR 3500 Clutch Kit, 11lb Chrommolly Flywheel.
----
Daily: 2000 Honda Accord Coupe F23A1 VTEC
Project: 1995 Eagle Talon TSi AWD

Blakk_Myst240sx Blakk_Myst240sx
New User | Posts: 13 | Joined: 09/09
Posted: 09/14/09
06:19 PM

Thanks for the input everyone. I'm still interested in the RB30, but the RB26N1 is the stronger choice.

I heard there's an upgraded RB26N1. They made around 60 to 70  upgraded N1 engine
blocks this year, but with my luck they're probably sold out already..

I still would like that RB30 with a high rev limit to play with though. between 9500-10500rpms would be
nice, it makes me curious though.

Does anyone have an idea on what would happen if a super charger was added to the
RB30 with a high rev limit instead of turbos?  

monaro_07 monaro_07
New User | Posts: 1 | Joined: 09/09
Posted: 09/14/09
07:04 PM

Hey,

In Australia we make an RB26/30.

it has the RB26DETT head, combined with that of the RB30 bottom. (you can also use the RB25 head)

Looking about 350KW stock without mods (extra 130-50KW than standard RB26).

Why not take the best of both.

TYRON  

MaverickGTR MaverickGTR
User | Posts: 50 | Joined: 04/09
Posted: 10/20/09
08:04 AM

I don't really know but you should choose, the RB26DETT N1 can at least be tuned to over 9000RPMS easy; we all know that. The RB26DETT N1 uses Garrett GT25 turbo chargers (which use a Ball Bearing-YEAH Grin  Cool ). The Nismo RB26DETT N1 Engine Block uses an 86 mm bore which can be bored up to either 87 mm or 88 mm. The displacement is 2.6liter, but better parts for example-camshaft. Nismo balanced the crankshaft to a higher specification than stock, as the RB26DETT engine experiences vibrations between 7000 and 8000 rpm. The engine also received improved water channels within the engine block. The top piston rings are also upgraded to 1.2 mm. The N1 engine also upgraded turbochargers (GT25). I really don't know about the Rb30DETT, however by your forum name guess, I guessing you have a 240sx. I heard is easier to drop a RB26DETT or the nismo spec RB26DETT N1 but you have to use a R32 Skyline transmission I believe. I wondering if RB30 will fit-its 3.0liters? So really I guess the RB26DETT N1 would be your option. However you could look into the RB26DETT N2, it uses the stronger RB26 N-1 block, modified with Nismo parts, bored and stroked to 2.8 L displacement (87.0 x 77.7 mm). The end result for the RB26DETT Z2 is 510 bhp (368 kW) and 540 N·m of torque; it saves the work on working on displacement yourself.

http://www.youtube.com/watch?v=9-muHHvG5O4 (Listen what it could sound like) Cool  
2000 Ford Mustang

Cold Air Intake, Magnaflow Dual 2.5" Exhaust w/3" Tips,
JBA Stainless Cat4ward Headers
Screamin Demon Ignition Coil

1995 Nissan Skyline GTR R33
HKS GT3240 turbochargers......

2008 Mazda 6 I-4

Robbo85 Robbo85
New User | Posts: 4 | Joined: 06/10
Posted: 06/10/10
06:28 PM

In regards to the revs 8000rpm to 11000rpm is a MASSIVE difference. simply the vibrations and harmonics become completely different and can affect not only the head gear but the rotating mass and balance of the bottom end aswell. for components to be able to rev over 10k CONSISTENTLY, EVERYTHING needs to be perfectly balanced, Flywheel, Clutch, Balancer, Rods, Pistons, Bearings, the bores need to machined well if not sleeved, oil pump needs to be upgraded outside nissan gear as well as water pump. Injectors need to have even and correct spray patterns and the ECU needs to be tuned correctly so that 1 cylinder isn't leaning out over others. to the idiot who said that there isn't much difference, unless your a professional engine builder do your research first before making these comments because you make yourself look like a complete *** idiot.

To the person who originally posted the thread for this forum, the rb30 is the better way to go for the street and is capable of making 6-7sec passes with the right supporting gear, rb26 N1 blocks are costly and can be hard to machine properly at times because of the material of the block and it's design.  

Robbo85 Robbo85
New User | Posts: 4 | Joined: 06/10
Posted: 06/10/10
06:28 PM

In regards to the revs 8000rpm to 11000rpm is a MASSIVE difference. simply the vibrations and harmonics become completely different and can affect not only the head gear but the rotating mass and balance of the bottom end aswell. for components to be able to rev over 10k CONSISTENTLY, EVERYTHING needs to be perfectly balanced, Flywheel, Clutch, Balancer, Rods, Pistons, Bearings, the bores need to machined well if not sleeved, oil pump needs to be upgraded outside nissan gear as well as water pump. Injectors need to have even and correct spray patterns and the ECU needs to be tuned correctly so that 1 cylinder isn't leaning out over others. to the idiot who said that there isn't much difference, unless your a professional engine builder do your research first before making these comments because you make yourself look like a complete *** idiot.

To the person who originally posted the thread for this forum, the rb30 is the better way to go for the street and is capable of making 6-7sec passes with the right supporting gear, rb26 N1 blocks are costly and can be hard to machine properly at times because of the material of the block and it's design.  

Robbo85 Robbo85
New User | Posts: 4 | Joined: 06/10
Posted: 06/10/10
06:31 PM

it's no different than any other engine, if built right with the right gear and mechanic, you can get turbo motors to spin to 18, 19000 rpm as were the fist F1 race car motors. Fuel, clearance, timing, internal gear and right turbo is the key.  

Robbo85 Robbo85
New User | Posts: 4 | Joined: 06/10
Posted: 06/10/10
06:34 PM

not necessarily! the right fuel and turbo go hand in hand along way with that.  

demigod demigod
New User | Posts: 1 | Joined: 09/10
Posted: 09/11/10
03:30 PM

the rb30dett n1 is the better choice simple because it can get higher hp rating and the rev limit wont affect anything the difference you need to look at is high you are able to get the hp. the rb26 will cost more to get the same as the rb30. you are able to get the rb30 upto 1900 hp as the rb26 can only go upto 1200 hp  

Derek Mark Derek Mark
New User | Posts: 1 | Joined: 10/13
Posted: 10/21/13
10:48 PM

Except the first F1 engines were not turbo.

What do you mean by the "first f1 race engines" arent all F1 engines "race" engines?