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Gtr R34 Rb 32 Dett - Nur

futurewa

By futurewa,
in Engines & Forced Induction

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spilmer Collaborator

spilmer

Posted
Posted (edited)

use the 32 cas swap the exhaust cam swap the diff

+/-1g weight balanced pistons & conrods

Thicker piston second land (std: 4.0mm N1: 4.6mm‚Ö)

Reinforced con-rod bearings

N1 water pump (improved flow & less cavitation)

Reinforced cylinder block head bolt boss

Narrowed distance between two piston rings (std: 1.5mm / N1: 1.2mm)

Revised camshaft profile (exhaust overlap: std 0 degrees / N1 5 degrees)

N1 oil pump (higher flow rate)

Increased sump capacity (im not sure about this)

weight 217kilos

Edited by spilmer
Angus Smart Grand Master

Angus Smart

Posted
Posted

Mine should be here soon :D

did a similar thing with my 32, N1 r33 pistons cracked #6 or broken rings, still block not out of car.

As said use the r32's cas, and i think there are a few other plugs, but just use whatever off your 32 motor on the 34 one.

everything above looks good, tho i think the sump is the same as standard?

I'd like to know if it would be worth balancing the bottom end again tho?

i am thinking of leaving mine stock and just balance, ati damper, oil return and oil restrictor.

260tech Proficient

260tech

Posted
Posted
Guys,

My motor died & a brand new NUR R34 motor appears to be an option.

Question 1 - How does one modify Cam Angle Sensor to accept my R32 wiring?

Question 2 - Does the NUR motor have forged N1 internals or just the N1 block?

Hi there, I don't think they do have forged internals (pistons) but like others say there are other significant improvements, plus you have a factory assembled engine. With an ATI balancer you should have most of it covered for some hp fun. :down::ermm::P

Cheers GW

PS: Thankyou Importmonster & the ATI group buy organiser.

post-34341-1217500413_thumb.jpg

post-34341-1217500503_thumb.jpg

1Fatman Rookie

1Fatman

Posted
Posted (edited)

Here is a bit on the N1 motors, came from the Wikipedia site.. http://en.wikipedia.org/wiki/Nissan_Skylin...E2.80.932002.29

From what I can Gather is they are hand built.

Hope it helps. :P

[edit] N1 engines

The RB26DETT N1 is an upgraded version of the standard RB26DETT engine. It was first developed by Nismo for Group A racing purposes. The standard RB26DETT, although known for its durability, proved to require too much maintenance for Group A racing conditions. The N1 engine is built from the standard RB26DETT block. The water cooling channels in the block are enhanced to increase flow. The block, and internal components are also strengthened. The pistons have 1.2 mm (0.047 in) top rings, but otherwise as standard. The connecting rods are the same as standard, and the crankshaft is standard but balanced. The specifications of the camshafts were also improved for power. The N1 engine uses the same parallel twin turbocharger layout but with improved turbochargers. The N1 engine also received an upgraded oil pump and water pump, to improve the cooling and lubrication of the engine. The N1 engine is identified by its 24U number stamped on the block, as opposed to the 05U stamp on standard RB26DETT engines.

The first model of the N1 engine was the R32 N1 engine. It uses a pair of larger turbochargers compared to the standard R32 GT-R. The turbine wheels on the new turbochargers are made from steel, rather than the weaker ceramic used for all standard GT-R models. The R33 N1 engine was slightly revised, with larger turbochargers than the R32 N1 engine, supporting more power if the engine were to be modified.

The R34 N1 engine saw further improvement. The camshafts were slightly improved for even more potential power, the turbochargers were about the same size as the R32 N1 turbochargers, except now they use ball bearing technology, which operates much more quickly than any other model used.

The most improved N1 engine is the R34 Nür engine. It is based on the R34 N1 engine. The camshafts were further improved for power, and the crankshaft was further balanced for higher engine speed. There were 1000 Nür engines made for use in the R34 V-spec II Nür, and R34 M-spec Nür models, however an undefined amount of extras were made and sold through Nissan dealers. They were advertised as making the same 280 PS (276 hp) as the standard model, but with the lighter engine parts, and more efficient turbochargers, the engine would make closer to 350 hp (260 kW).

Edited by 1Fatman
Angus Smart Grand Master

Angus Smart

Posted
Posted (edited)

I have a question regarding the diff in the 34 motor,

actually i dont. i think my 34 n1 motor was in a r32. so the front diff should be fine...

how do i make sure of this?

Also.... if i was able to pump around 400rwhp + out of my r32 motor that had 33n1 pistons.

what can i push out of the 34 N1 motor?? should i be able to get somehwere near a safe 500hp at the wheels?

Edited by Angus Smart
Angus Smart Grand Master

Angus Smart

Posted
Posted
so do you have to change the exhaust cam to fit the R32/R33 CAS? is there anyway round this? just thinking it would be better to keep the N1/NUR cams.

are 34 cams any different from 32 ones? i thought all i had to change was the cas depending on which cams i wanted to use.

tho i think my Used motor was already in a 32 and comes with 32 cas/cams. and also already has cams too apparently.

i still wouldn't mind knowing is its a good idea to get the bottom end balanced on the 34 n1 motor. or is the factory job good?

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