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It all depends on who builds it and how it's built.....
 

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I don't think that question can be answered just yet. The few 1000whp customer owned GT-Rs out there have very little miles on them. Even the GT-Rs that have 1k whp on C16 make around 800 on pump and are usually not driven on kill mode day in and day out. A year from now we should have a good answer on how reliable they are though.

Just my .02
 

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I don't think that question can be answered just yet. The few 1000whp customer owned GT-Rs out there have very little miles on them. Even the GT-Rs that have 1k whp on C16 make around 800 on pump and are usually not driven on kill mode day in and day out. A year from now we should have a good answer on how reliable they are though.

Just my .02
+1 Also maintenance should be the same as a stock GT-R. There really isn't any additional work that would need to be done over stock.

It would be great if we had a forum member with one of the "big packages" installed who road courses the car often. This type of use would really tell the story. Like gilly mentioned it also depends on who built the motor.
 

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I agree with the above, it comes down to not only the components used but how it is assembled is more important. The jury is out on the reliability of these engines at X power levels with upgraded internals etc. Let's face it - the car has been in the states for a little over 3 years now and we are approaching the 2000 crank HP range? Incredible is an understatement, at this point only time will tell, but for our builds, so far so good!
 

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Forum Member FatNSlo has had his R900 for quite some time, maybe close to 1 year. He has put put it through Drag, Road, DD and mile events if I'm not mistaken. I'm sure he can elaborate, but it seems to me quite a solid build...
 

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Define your definition for reliability. For road course I would want full power for 30 minutes sessions 40 times a year. With this kind of requirement, power level would definitely have to dial back and carbon ceramic brakes a must.
 

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As has been said by Neil and Sleepdoc - you will have to look at what is out there. Personally, the more support work you do from forged internals to the transmission and clutch, the better. Better cooling is also important. I'm a 1/4 mile guy - so brakes and suspension aren't as important to me - but for road course they are essential (brakes more so than suspension).

It really will depend how much you track it, what setting you are on (using C16 on kill mode for a road course is likely not necessary as you have to turn). Further - you can get around 900 HP on pump gas at the crank on the R1K - so that should do it for the track.

We also know that some of the components of the stock GT-R aren't the best and beefing up your components isn't a bad idea regardless.

Most people - even FatnSlo drive the car "normally" at least 70-80% of the time. SO if your builder and consequent build is good - I would say that with the proper maintenance and upkeep - it has a good chance of lasting a very long time.

Good luck with your build!
 

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Very true Jeremy, however after speaking to Jeff (FatNSlo) and the guys who work with his R900 at Serous Autosport, I don't think there is a day that car starts up that doesn't end up with at least one WOT application!
 

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I think its real foolish to expect reliability out of a vehicle that has been modified to 1000awhp period. Everybody drives differently and for me that shit wouldnt last 6 months.
 

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High HP build's are never predictable. Some can go on for years, some will poop quick. All you can hope for is that if something does go south quick, your builder is willing work with you.
 

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High HP build's are never predictable. Some can go on for years, some will poop quick. All you can hope for is that if something does go south quick, your builder is willing work with you.
I totally agree with you,

I don't have the big build your talking about. on bump gas 729whp. been driving it around quit allot while its hot here, min 38c. also drove it to highways while temp hit 48c. and runs as stock and cool.

But, things happen that you didn't plane. fuel pumps problem?!, fuel filter blocked?!...etc.

also, you have to keep checking engine oil level twic a week if not daily. depend on your driving style.
 

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Lol Neil - I did say "EVEN" FatnSlo...it is true however, very few people take their cars to the NASA landing strip to see how fast it can go...;)

So for everyone else - it really does depend on your driving style and requirements - but all things being equal in regards to how hard you drive it - the shop that has the right people, well thought-out and drivable build, best warranty and support likely has the best chance to give you the product that will deliver and last.

I know we aren't making this about specific shops - so I will say, that in my personal experience, I have found success at one shop in particular - and their initials are Switzer.

Continue doing your research and good luck on your build!
 

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I agree with all this comments.

it's all about who builds your,how it's built and the way you drive your car.
 

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I think its real foolish to expect reliability out of a vehicle that has been modified to 1000awhp period. Everybody drives differently and for me that shit wouldnt last 6 months.
1000 HP R35 is very reliable car especially if you compare it with the SUPRA and the old R34, 33 and 32.

We build so many 800 to 1000 + HP gtrs and thanks god no one back to us for major failure.
One of them build for more than 6 months and the owner hade many many races (street races) and the car still works perfectly, he only change plugs and oil and it's putting more than 12,000 mile since it's build.
 

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10k miles in my Accelerated Performance engine and no problems at all. It depends who builds the motor....in my case...I got the best of the best!!!
 

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1000 HP R35 is very reliable car especially if you compare it with the SUPRA and the old R34, 33 and 32.

We build so many 800 to 1000 + HP gtrs and thanks god no one back to us for major failure.
One of them build for more than 6 months and the owner hade many many races (street races) and the car still works perfectly, he only change plugs and oil and it's putting more than 12,000 mile since it's build.
Wow, that means 20,000 kilometers and those 1000 horses are still healthy.
 

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Since most of those 1000+ whp GTRs come from shops that give you a 12-month warranty, they should be reliable.
You don't push a 3.8 L engine as much as a 2.6 L engine in order to produce 1000 hp, so R35 should be more reliable than R34 etc.
 

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For road course I would want full power for 30 minutes sessions 40 times a year. With this kind of requirement, power level would definitely have to dial back and carbon ceramic brakes a must.
40 -30 minute sessions a year? 20 hours of track time? Even at stock power levels, everything is going to need a rebuild. At that kind of level you would need to rebuild the whole car every year. Anything else, and you are not understanding the stresses you are putting the car though. I have been involved with professional road racing the last 5 years. Every session the car(Scion, Nissan Skyline GT-R) gets a full check out. After every weekend parts get replaced. Every year, engine and transmission rebuild, more often if necessary.

As a street car, the stresses are entirely different. If quality parts are used, built well, then the cars can be fairly reliable. Understand though, even at stock power levels, cars have some mechanical issues. Not fully grasping this will lead to your disappointment in the future.
 
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