RB in new R35

[signalr32]

So what are your thoughts.. the heart and soul that made the GTR so popular in they new R35.. i was thinking about it.. i know for a 350z the cheapest it can be done i think is like 20k or something.. might be worth it.. dropping in a 1k hp RB into the new R35.. DAM THAT IS A THOUGHT.. hmm... (Checks pockets.. hmm might just be that deep).. ;)

[Grazehell]

So what are your thoughts.. the heart and soul that made the GTR so popular in they new R35.. i was thinking about it.. i know for a 350z the cheapest it can be done i think is like 20k or something.. might be worth it.. dropping in a 1k hp RB into the new R35.. DAM THAT IS A THOUGHT.. hmm... (Checks pockets.. hmm might just be that deep).. ;)
What a downgrade. I hate the RB for one reason, no torque(at least when you start putting oversized turbos on then and just aiming for big hp) oh I forgot, over rated as this thread would so full points out!
Why would anyone downgrade like that? There is simply no justifiable reason(with the same money you would spend it fabrication for the RB you could spend it on building the VR engine, not to mention chances are with the RB is would not be AWD).
In fact I think it could be the stupidest think I heard. It makes my head hurt just thinking about it. I will try to forget it was ever mentioned.

[tyndago]

3799cc engine to 2568 cc engine. The RB is cool , but its 1950's tech , upgraded to 1980's tech. The engine is old. The VQ head , flows better stock than a ported 2JZ or RB head. The VR head will be similar.

Embrace technology , go forward with future product. Otherwise you might as well put a carburated 358 cubic inch NASCAR engine in it that makes 850 hp for 500 miles at 8000 rpms. It might be powerful and a way to do it, but its a backwards step.

[smracing]

There is nothing low tech about a NASCAR engine.

[tyndago]

There is nothing low tech about a NASCAR engine.

I have respect for NASCAR engines. I have respect for what they get out of a 358 cubic inch engine. I have respect for spinning a pushrod V-8 to 8500 rpms and beyond for 500 miles.

I did not call the NASCAR engine low tech, but it is far, far, far from high tech. A couple exotic materials does not a high tech engine make. And before you argue this, try 19,000 rpms on for size, and tell me how high tech 8500 is.

[TxChristopher]

NASCAR engines are "high tech" as far as pushrod engines are concerned, but beyond that they are overall low tech engines.

To me it is not RPM ability that defines being "high tech" though. Todays turbo diesel engines are very high tech, but they only turn 3200 rpm or so. To me what defines "high tech" are features like multiple intake and exhaust valves, direct injection, variable intake systems, fly by wire controls, state of the art ECM's, intelligent transmissions, exotic manufacturing techniques ..... stuff like that.

[The Siath]

If any engine swap 'should' be done - the only engine I could suggest would be the Infiniti Indy 35A V8 which tips the scales at 325 pounds. It costs around $90,000.
It's similar to the 'production car model' but way more capable.

INFINITI ENGINE SPECIFICATIONS COMPARISON
Indy 35A V8
2002 Q45 V8
Designation
VRH35ADE
VK45DE
Type
DOHC 32-valve V8 (http://www.popularmechanics.com/automotive/motorsports/1269261.html?page=3#)
DOHC 32-valve V8
Cylinder Angle
90°
90°
Displacement
3.5 liters
4.5 liters
Horsepower
650 @ 10,700 rpm
340 @ 6400 rpm
Torque
320 ft-lb @ 10,400 rpm
333 ft-lb @ 4000 rpm
Bore x Stroke
93 x 64.39mm
93 x 82.7mm
Compression Ratio
13.8:1
10.5:1
Redline
10,700 rpm
6900 rpm
Crankshaft
180° billet steel
90° forged steel
Connecting Rods
machined alloy steel
forged steel
Lubrication
multistage dry sump
wet sump w/trochoid gear
Oil Capacity
12 quarts
6 quarts
Fuelmethanolpremium
unleadedTop Speed
225-plus mph
limited to 150 mph

I know this cam out to a rather long post, sorry :D but if your going to 'upgrade' a GTR - then actually UPGRADE it :D

[VQuick]

Adding an RB would probably push the weight to 4000lbs, maybe more.

[blownmotor]

That would be a down-grade

[Black Trunk]

The engine is not the problem with this car its the weight and the delicate gearbox. VQs are making way more power than 2JZs and RBs.

[crispeed]

The engine is not the problem with this car its the weight and the delicate gearbox. VQs are making way more power than 2JZs and RBs.

Agreed!
It does not matter what's put in there untill Nissan sorts out all the tranny problems.

[tyndago]

The transmission problem will be fixed. We have always had problems with transmissions in all wheel drive cars. They always have issues when run hard. The aftermarket sorts out solutions.

I expect there to be fixes for in the $5k range in the future.

[Grazehell]

The transmission problem will be fixed. We have always had problems with transmissions in all wheel drive cars. They always have issues when run hard. The aftermarket sorts out solutions.

I expect there to be fixes for in the $5k range in the future.

Apparently Cobb is working on beefing up the tranny. I was a bit surprise to hear an American company doing this before Japanese since company since it seem like they have been getting so much power out of the car(while not like Cobb is far behind).

[tyndago]

Apparently Cobb is working on beefing up the tranny. I was a bit surprise to hear an American company doing this before Japanese since company since it seem like they have been getting so much power out of the car(while not like Cobb is far behind).

The limiting factor in making power is the transmission. I have been saying this for a long time. However because of several factors, newness being one of them, lack of ability to get into the transmission ECU, its going to be a little while until you see it all work.

The problem with the box is that the trans, the rear diff, transfercase , and clutches, its not currently serviceable. It needs to be serviceable, and sooner than later.

[kaane]

No one is going to start making any serious power until they fix the transmission issue. 20K for a new one is just stupid. Being not servicable also not a very wise decision.

[tyndago]

http://2009gtr.blogspot.com/2008/10/how-to-fix-nissan-gt-r-transmission.html

My ideas for the transmission.

My thoughts are that wheel hop is killing the transmissions. The problem with the wheel hop is with launch control, the GT-R spins the rear wheels. The wheel hop is exacerbated by the launch control. How do you stop the wheel spin and wheel hop ? You don't use launch control. This has been touted as a feature of the car and results in world beating 0-60 and 1/4 mile times. Some of the owners that have used launch control often, have broken transmissions and are now been denied transmission replacement under warranty. This is a tough subject. The line between abuse and doing something the car was built with. So what does Nissan do to fix it ? Damage Control. Damage Control is keeping a problem from getting worse.

1)Get rid of launch control. This will make no one happy. 0-60 times and 1/4 mile times will not be as "published". Doing this will not make anyone happy, and will cause a lot more problems.

2) Modify launch control. If they have the car launch at a lower RPM, it will wheel spin less, and cause less potential for breakage. The problem here again is that the cars will be slower, people will complain, magazines will complain. On low grip surfaces, there could still be issues with breakage.

3) Modify launch control 2. A little wheelspin in an all wheel drive car is the quick way off the line. Instead of turning the traction control OFF, the car could still have control of the rear wheel speed and keep the rear wheels from spinning and hopping so much on a launch. Traction control doing what traction control should do.

4)Make the transmission- differ- clutch- transfer-rear end serviceable. Send it out to someone and have them repair the broken parts. Automatic transmissions are rebuilt and returned to service, the GR6 should be the same.

etc...