Moreover, RB25DET stock internals will bear even 500 horsepower, and if you use water methanol injection kit, then even more than 500 HP. But to be sure in reliability of your engine, it is worth buying GTR rods, forged pistons, MLS head gasket, ARP studs and make head porting. Upon this more than 500-600 horsepower will be available.
Full Answer
What is the maximum boost pressure of RB25DET?
Maximal boost pressure on RB25DET reached 7 psi (0.5 bar). Also that version was equipped with variable valve timing system NVCS on the intake side, fuel injector 370 cc/min, and oil jets were installed in cylinder block.
What is the difference between RB25DE and RB25DET?
In contrast to RB25DET, RB25DE (S1) had reinforced connecting rods, new pistons (compression ratio is 8.5), 45V1 turbocharger. The turbocharger was larger than 16V of RB20DET.
What size head gasket do I need for RB25DET?
RB25DET Boost up. Some owners apply RB26DETT crank, RB26DETT pistons and 1.2 mm head gasket. It will make compression ratio 8.7 and increase displacement to 2.6L. Using 1.5 mm head gasket will diminish compression ratio to 8.4. For everything to work properly, you should close the port to NVCS system.
What are the disadvantages of RB25?
Also RB25 have high fuel consumption and problems with electronics. In other respects, these engines are quite reliable, if being served regularly and using high quality engine oil and gasoline.
How much horsepower does a stock rb25 make?
With a healthy RB25DET, the typical safe figures for stock internals are around 400hp, with some riskier owners having reliably pushed them 450hp.
How much boost can a RB25DE handle?
Stock turbo can do max of . 85 bar, which depending on supporting mods and remap will get you about 320-330bhp.
How much kW does a RB25DET have?
RB25DET - twin-cam TURBO (T3 Turbo) (245 to 250 hp and 319 N·m) NEO RB25DE- NON-TURBO twin-cam 147 kW/200 PS @ 6000 rpm, 255 N·m (26.0 kgf·m) @ 4000 rpm)
How much HP can a stock rb26 handle?
Registered. General rule is 500hp, that was the design for the stock engine.
What did the RB25 come in?
The RB25 series of engines was first introduced in the R32 Nissan Skyline GTS25 sedan and coupe models. RB25DE (Naturally Aspirated) and DET (Turbocharged) engines produced from August 1993 also featured NVCS (Nissan Variable Cam System) for the intake cam.
Which RB motor is the best?
Designed with high performance and racing in Group A competition as its primary objective, Nissan engineers equipped the Skyline with the largest and most powerful version of its RB engine series, the RB26DETT. The inline six-cylinder engine is based on an iron block and an aluminum cylinder head.
What turbo is on a RB25DET?
Turbo Spotlight Garrett GTX3582R drop-in ready turbo for the Nissan RB25DET engine.
How can I make my RB25 reliable?
driftescort Active Member Best way to make a RB25 reliable is to leave it stock and put it into a skip, then insert a 1jz/2jz into your car and thank god you didn't waste all your money on a RB25.
What's better rb25 or RB26?
The RB 25 and the RB 26 also differ in their capacity. While the RB 25 comes wth a capacity of 2498 cc, the RB 26 comes with a capacity of 2566 cc. The RB 25 DE comes with a power of 190 hp at 5600 and the RB 25 DET comes with a power of 250 hp at 5600. On the other hand, the RB 26 comes with a power of 280 hp at 5600.
How much HP can stock GT-R handle?
2,200-hpThat's close to stock. Not close to stock is its astonishing 2,200-hp maximum output.
Which is better RB26 or 2JZ?
Both are large, inline six cylinders with similar dimensions and weight. The increased displacement of the 2JZ-GTE yields the same output but it achieves it's peak power at 1,200 rpm lower then the RB26. The 2JZ also nets 31 lb ft torque more at 400 rpm lower then the RB. This hands the advantage to the 2JZ.
How much boost does a RB25DET turbo have?
It is much easier, more reliable, quicker and cheaper to purchase RB25DET, and you will gain much power at once. As to increasing the boost on stock RB25DET turbocharger, their limit is just 11.5-13 psi (0.8-0.9 bar).
Which is better, 1JZ or RB25DET?
Comparing RB25DET and 1JZ-GTE, one might say that 1JZ is somewhat better, and in general, Toyota engine is somewhat more reliable and it fits for performance tuning more.
How reliable are RB engines?
Similar to many legendary engines from the 90-s, RB series are highly reliable and durable. Not vainly they are the most popular engines in the world. They do not have any design failures or serious problems. Of course, some insignificant problems may still happen. Sometimes ignition coils fail, what causes complaints of misfire. In this case, you should just change the coils, and in general, change them every 60,000 miles of mileage (100,000 km). It will relieve you of such problems. Also RB25 have high fuel consumption and problems with electronics.#N#In other respects, these engines are quite reliable, if being served regularly and using high quality engine oil and gasoline.#N#Comparing RB25DET and 1JZ-GTE, one might say that 1JZ is somewhat better, and in general, Toyota engine is somewhat more reliable and it fits for performance tuning more.
What year was the RB25DET NEO?
Besides, it was equipped with new 45V2 turbocharger with plastic impeller instead of the steel. Those were RB25DET S2 engines. In 1998 the engine was modified and named RB25DET NEO.
When did the RB25DE come out?
It is quite popular representative of RB series. It appeared in 1991 and replaced RB20DET. RB25DE used cylinder block similar to RB20, but with cylinder diameter enlarged to 86 mm. Also it was equipped with crankshaft with piston stroke 71.7 mm, new connecting rods and pistons.
Do you need to adjust valve clearance on a RB25DET?
There is no need to adjust the valves on RB25DE/DET engines, since they use hydraulic lifters. But if you have RB25DE NEO or RB25DET NEO, then you should adjust valve clearance from time to time. RB25DET/DE uses timing belt, which should be changed every 60,000 miles of mileage (90,000 km).
Trader Feedback
I have searched here, and on the net, and can't get a definate answer to what the stock turbo on a RB25det can handle. I have read 10 PSI max, and others say you shouldn't run it past the stock 7 PSI, or the wheels will grenade.
Trader Feedback
the answers are here.... the stock turbine on the rb25 can only take up to 0.9bar of boost... that something like 11-13psi of boost before the ceramic fins blow. On 0.9bar boost your rb25det will probably only be pushing 290 flywheel horse power.... thats something like 240-250whp.... thats what mine was doing one a fully stock engine..
Trader Feedback
I hit 250whp at 8psi. With my standalone in and tuned I hope to hit 300whp with 10-12psi and hopefully not grenading the turbo. Then next winter hopefully will get intake manifold, injectors, head studs and gasket, along with hy35 turbo or possible hx40???
Trader Feedback
i think racinitter (jason) was runnin higher than that when we ran at the track but i could be wrong. I never ran my stock turbo so i dont know but jitter ran his at the track and i coulda swore he told me he was boostin 15psi
Trader Feedback
Yea, I was running 13.5 psi at the track. I did run it at 15 for a little while, then backed it down. My boost without a boost controller was 10psi. When I am messing around I run 13.5 psi (which is most of the time). I couldn't go lower than 10 psi if I wanted to. Also I know of another rb25 locally running 15psi all the time, for 2 years now.
Trader Feedback
Yea, I was running 13.5 psi at the track. I did run it at 15 for a little while, then backed it down. My boost without a boost controller was 10psi. When I am messing around I run 13.5 psi (which is most of the time). I couldn't go lower than 10 psi if I wanted to. Also I know of another rb25 locally running 15psi all the time, for 2 years now.
Trader Feedback
From what I have heard, the problem as stated is the ceramic blades blowing up around 13 psi. The stock turbo is a fairly good piece and many people on skylines Australia have switched out the ceramic blades for steel ones. While this is cheaper than a new turbo you still have to ship the unit out to a turbo shop to get it balanced.