How Much Power Can A "stock" RB26 Make? Project Budget Supercar Pt14 

you guys need to get together again for another build!

Mighty Car Mods motivedvd at least show quarter mile times, unlike you gents

I was wondering how the float was happening, I had thought it was only at high rpm until now. Learned something today.

thanks for the info. I only make 400hp on my rb so I'm not that worried just yet but it's good to know!

+Steven Ross-watt yeah you are on the right track, but you still need to open them and close them, then hold them closed. It is a dynamic cycle on the chamber side vs. a constant pressure situation on the inlet side. if there is a raised pressure pushing against the valve spring and one bang of pressure pushing for a very short period of time preceeded by a short period of compression. The speed at which the inlet valve closes is crucial to how much power is made. When the spring has to work against more pressure the roller lifts of off the cam and then hits it again later causing unwanted wear and compression loss.

This is completely wrong. A bigger turbo can't move more air at lower boost pressure, the path the air is taking is the same regardless of turbo size and the limiting factor in the air's mass flow rate is when the air passes through the valves because they are much smaller than the area of the air-intake. To increase the mass of air entering the engine you have to increase the boost since you can't directly increase the velocity of the air through the valves. Secondly increased pressure on the back of a valve would increase the pressure on the valve seat. Why do you think force from air pressure is the opposite to force from a spring? You know there are pneumatic valve systems where air is used as the spring and they can actually handle higher RPMs than metal springs?

DSPORT 850whp on a stock RB26 bottom end? Wow! But yh that factory oil pump does need replacing for an aftermarket one.

very good insane info.... well done

Wolf3d and SST tune too I bet.. :p

Might I ask how your quest for an R32 went?

Lucky we have Jim from CRD too! We tell people that good tuning, good choice of products and support gear and good driving is what keeps it alive.

why didnt u go dual valve spring?

+Stephen Cain didnt need to and overkill for our power. Granted down the track when we want 900hp they would be better but we like to try the most simple method so we can test components individually and help teach people as we go

well said good job you guys that rb is mean!

I couldn't agree more. The tune is the absolute key to making good reliable power. CRD definitely know their jobs well though and this thing is a monster!

1barnet1 The R35 single-handedly made other manufacturers to create a category named hyper cars. Only the best of the best get the GT-R tag. R32 will always be the godlike best car ahead of its time. All wheel steering, insane, that is what Porsche is utilizing now in their hyper cars. And that was almost 30 years ago now... Nissan is insanely talented car company, rock solid cars and the RB26 is one of the best examples.

Robert Keeton ditch the family and you'll be ready for your own skyline!

We've seen RB25s with same mods and Greddy forward facing plenum make very close to this power and last just as long

Us too! We are juggling 4 project cars at the moment!! So well get there soon.

Haha I know the feeling all too well... Seriously so impressed with the power so far!

We've been busy lately but the new turbo kit is on and tuning next week

gt3584r thatd be maxed out at that power levels you can see in theyre new series they upgraded turbo.

Late model 32, which is same as 33

Stock oil pump too

what ecu,alot of people dont know that a haltech sport 2000 costs $2000 ,i have a rb30/26 with stock steel wheel turbos and am making 370 hp at the wheels at 14 psi but need a boost controller to push it further ,would be nice to see what hp u can get out of a rb30/26 with stock steel wheel turbos

would be interesting to see what max power u get from premium unleaded only and what engine mods u need to get more power just using unleaded fuel,just a thought

98 is just so prone to detonation compared to E85 that you have to have a big safety buffer in place. I wouldn't go past 380-400kW on this set-up on 98

Not exactly. Factory head studs stretch under power because not strong enough, not because old. Valve springs rarely lose their pressure. Same deal. Boost simply over powers them.

kyle eaton Where have u seen that kind of power level from an RB26? I'd love to see them too.

We will go stroker to do a true comparison

Cameron Walker everyone uses e85. No one expects it to be on 98.

Agreed. Were probably not far off maxing it out, yes.

Rev limiter is 8500 on ECU ( tacho over reads so looks like 9000) we rev it to 8200-83000 or so R33/R34 factory rev limit is over 8000 so all good as we have a 33 engine ( 3/93 onwards is same as R33) Is not the rpm that breaks it, it is people hitting rev limiter and two-step that breaks it

Ok. Awesome vid! Always like the stuff you guys post!

They did a limited special edition run of 270 Poncams a few years back. We went to purchase a full set, but they had no inlet 270s left in the world, so, we tried a 260/270 combo and it works very well.

***** oh, ok thanks for clarifying, yeah I would say it works very well. Great job guys keep up the good work, I really enjoy your channel.

Holy Mountain Ent bottom end not touched since it left Nissan factory

wow. very surprised to how much power the stock bottom end can take.

Asap. Weakest link on rb engines

New turbo kit is on now and tuning next week

MotiveDVD nice, I'm planning on putting a gtx4202r on my 33gtr next year hopefully garrett have released a gen2 version of it by then

Why so big? The new GTX3584RS is rated at 1000hp but is GT35 sizing. We'd rather have 900whp and mega responsive than have 1000+ and be laggy. Look into it Area under the curve makes for a fast car in real life.

MotiveDVD I asked garrett about the rs but they said that you can't use a twin scroll housing on the rs but it was a toss up between the two I was considering

It would be interesting to see a comparison between 2 of the gen 2 gtx2860r turbos and a good single like the rs on a gtr as the new 60s are rated to 475hp each

The entire exhaust is 3.5", including andy mufflers and cats

Hi! Thanks for the Feedback! I'm in the process of fitting 2x GTX2860 to the car but I cannot seem to find a correct catalyst converter which will keep up with the flow. Is there anything You can suggest? Seems that Your converter can withstand 675whp, so maybe you have a suggestion on cpi and size! Thanks! BR RoB

We can't legally suggest not using a cat, or admit that we aren't. It certainly look like a cat under the car though so it must be.

To get a Cat to flow that power its needs to be rather large. Think a 5-inch cat.

Had to grin reading the comment. Completely understood what You mean. Thanks for the answer! Waiting for the part 2! Keep up the good work! Cheers, RoB

Yes

+MotiveDVD wow thats a suprise always thought they might be a issue at that those power figures

lol n1

n1 pumps are rubish

30psi+

Stock ones mate

We'd love to do more cars but we still throw our personal time and money at these project cars. As our subscribers and views grow, we can afford to do more cars.

Can't wait mate .love motive and what your doing for the car scene.next year drag battle (my EVO vs your GTR) :)

I think people know now that Andrew will race anything. Win or lose

Maybe the myth is you don't need to if you drive and tune properly? R32 has short nose crank, that is the problem. They break very easily. Long nose crank ( 1993 onwards) is stronger and only really breaks if you rev past 8500 ( factory R33 and R34) or bash off the rev limier and 2-step too much. Tuned and driven right they obviously last, as ours has lasted 4 years since we've had it and over a year on 600whp.

thanks alot for the answer! Im currently thinking of going 600whp for my 91 r32 gtr and im still unsure of what i need to upgrade (never touched engine with 20k miles), but these videos you are making makes it a LOT easier for mw to understand these engines :)

GuyX2013 except for the Celica, WRX and Lambo video we just did........ and the WRX and Jeep project cars we have.... Our project cars come from our own pocket still so we buy what we like. GTR stuff also gets much higher views

also i hope you skip the nitto 2.8 and go straight to a stroked rb32 bottom end

We are going to put a page on our website that list everything. Hard to give exact price as changes depending on who you know and where you live etc. Also, because we did it in small stages there was a lot more labour so hard to add that up too.

3.2 is a pretty proven package but what people don't realise is the amount of work required to a RB30 block to get it all to fit and bolt up etc which adds a lot of costs people don't take into consideration. Going 2.8 means it is "bolt-in"hence why we might go that option and look to build an engine that revs harder. Combined with short gears, it will work well

***** never knew that! can't wait to see what happens next

+MotiveDVD keep up this great work. hands down most informative videos on utube. love the skylines! awesome!

Nope. Ae explain what engine it is in the video Stock

Castro Edge 10W-60 or Nulon 10W-60

Factory 8200

You would think that, but it launches better on the softest setting on the rear with the most amount of squat possible.

Thanks for responding is it because the movement of the car backwards like that puts more weight on the rear wheels reducing wheel spin? i am genuinely interested to know the reasons behind it.

Youre an idiot. Get out of here.

lol

crying like Hillary! hahaha LOVE IT

Not sure what you are referring to exactly, but power is all based on turbo sizing. we made 500whp on low mounts and switched to single and went 620 while being more responsive and better to drive. Check out our Twins vs Single video to take a look

+MotiveDVD I meant like parallel turbos. Isn't that what the RB has out of the factory

RB26 comes with twin turbos and 300hp at the engine. Lucky if it makes 250 wheel horsepower stock

+MotiveDVD I'm talking about your video man. Like the title says clearly " how much can a RB make stock" and s bolt ons doesn't it make 600 ish or more

Still confused.

Relax man. we explain it in all our videos

They were supposed to let go ages a go according to internet and GT-R Experts :)

That's why we have a boost controller. We can run high boost at the track and low boost on the street

Beau Mancini test of stock block, stock oil pump, stock crank, stock rods, stock rod bolts and stock pistons. Totally stock bottom end No one ever said stock engine Stock head except for springs and cams too

Torque numbers are only comparable, not relevant. Tyres, which dyne etc, make torque numbers vary greatly.

+MotiveDVD so do power numbers with the same variables. still good to have an insight on the graph.