Butters

I've never seen this on a factory built RB26 have the screws come out, or gears break for that fact. Only once someone has touched the motor have I heard / seen it. I've seen a few factory built Rb25's shatter gears but we talking high mileage extreme beating at drift track, constant limiter for a full season. Well outside what it was built for.

Over the moon in fact. Engine is coming out to put on a new enlarged sump. I planned on putting on either a new pump(Tomei / Nitto) or billet gears. But a bit of waste of time if the crank has narrow collar. Things spiral quickly, if crank is out, new bearings ... maybe new rods and pistons ... wait just rebuild the engine... oh but I should get an N1 block .... 40k later .... haha.

THANKS ! Sequential at times but overall Incremental is probably a better way to state it. Chassis numbers with Nissan's are like that too, jump when a change of some kind occurs. Bit of a surprise to find out that despite being a 32 RB26, it's most likely the better crank. Winner Winner.

found this on the forum , suggests I am in the range ----------------------------- From the segmented (potentially incorrect) information I've found that; Early R32: RB26000XXXX to RB26002XXXX Mid R32: RB26003XXXX (V-Spec I RB26-03XXXXX - Reference Classic Register) Late R32: RB26004XXXX (V-Spec II RB26-042XXXX - RB26-045XXXX - Reference Classic Register) Early R33: RB26005XXXX Mid R33: RB26006XXXX (as per the engine in this R32 V-Spec II, which is what I'm concerned about from legitimacy perspective) Late R33: RB26007XXXX Early R34 (2000+): RB26008XXXX ----------------------

Now as I understand it the engine numbers are sequential for the rb26. EG stamped - RB26040100A is a 40,100 engine. Now they made between 1988 and 1994 43,834 R32 GTR's In 1994 they made 7,464 r32 gtr's. So if you have a ~37,000++ number RB26 it's "safe" ish to assume its an 1994 motor and a long nose crank ? The long nose crank being introduced somewhere in Feb of 1993.

I've read that before, really good article. However my ~900hp+ at flywheel, means it can be done. Also have tested it with one pump on only, does what you'd expect, near 700's flywheel. No disagreement that i will have horrible pressure drop compared to what it would be on a bigger lines. I can also overwhelm the regulator / return line at low HP consumption with both on, but I don't do that, so no issue So horribly inefficient but it works really well for the 10 seconds or so the second pump is on.

So what did you end up doing ? and is it still alive today ?

I run 2 x 525 pumps on factory 8mm fuel lines ... zero issues, staged of course Your setup should work fine, all you need to do is find the restriction. A good aftermarket fuel regulator is always a good idea too. If it's not your regulator i'd be suspicious of your fuel tank breather and your tank pressurising. Next would be something with the fuel hat. Then blow out the fuel lines.

Clearly this is just a "ME" problem

For some reason I find myself removing the rear diff often. The top two back bolts that go into the diff to hold the attesa pump in place are just a PAIN. Has anyone mounted the attesa pump to the subframe instead of diff ? Also thinking about trying a stud on one of them to help locate. Other idea's ? or tricks ?

Yes Rb26 I am using an Ignite 5.0 bottom/crank trigger on the ATI and will be doing the same on the ROSS. On one setup I have VCAM so using that sensor as the top/cam trigger. *cough Toyota style ... *cough On the other I am using an Ignite 5.0 cam trigger. I also use link ecu too, so once you get sync, the ecu runs completely off the crank. You can literally unplug the cam sensor once started. I get zero trigger issues and drive the car weekly.

36-2 balancer is the biz. Personally prefer it over a gear with teeth. I run an ATI 36-2 custom wheel on my street car as it has Aircon Putting a ross 36-2 on my race car, no AC. I'll look up the company that did the ATI if your interested, sit down price though

If you want a 4inch muffler check out SP Mufflers. After some advice I got on here I reached out to them. Made me 2 custom mufflers in 4inch in and out to suit my probably one of the few Cefiro with 4inch exhaust. Super easy to deal with and it is super quite, maybe too quite. They can make to suit you though. https://www.instagram.com/spmufflers/

It's always been my policy but I have no comparison motor without one to compare it to. As others have said, the one on your motor is also for sure trashed by now.

I have to add, I've run two(small sample I know) RB26 with stock short nose r32 crank and stock oil pump gears at high power over many years without issue. I do always put on an ATI damper and manage limiter. 650whp - run 9's and has been in my hands for 16 years and counting. 780whp - driven weekly, roll raced etc and been going 4 years and counting. This is no guarantee for you but it is a counter to the RB's smash gears by just looking at them

That seems hell weird ! But I've never played with drive by wire. Love to know a reason ?

Doesn't a nitto pump send you down a new rabbit hole ? The one were you need bigger sump to stop it emptying. Head restrictor to stop head filling up Head drain when it does then a plumb back to sump catch can for when none of the above works ? Not being cheeky, serious question as I am putting on a big sumo soon and have a billet gear set but also desire a bit more oil pressure for my vcam. Was thinking gears + a shim to bump pressure.

Speaking to them over email at the moment, they did suggest the track model might be better for 1000hp which I imagine is covering themselves. Getting a straight answer on which flywheel to use is proving tricky, might be easier to just call them. Any recommendations on a pull to push conversion ? Been looking at ORC and ATS but both state specific to their clutch.

So I have been watching some of the video's peddling these and on paper they look like magic. I have a r34 getrag with a nismo supercoppermix and its amazing to drive, just holds the power but the box is noisy and I would like a little more room power wise. So the claim is with the new dampening design in the Uniclutch I will get "near" factory levels of gearbox noise without the dual mass flywheel. The torque ratings are very high so power seems like no issue, 800ft/lb will be near 1000hp on an rb26. So the only question I have is pedal weight, it will be going from pull to push. I have an injury that means an overly heavy pedal will not be do-able. Any one used one yet ?

G40 - 1150 result Never seen someone work so hard to reduce the power haha

The dump and turbo's changed at the same time. So it went Stock Twin Turbos - aftermarket front pipe but stock dumps, 3.5 inch cat, 3 inch exhaust, one rear cannon muffler. ~310rwhp g35-1050 - 4inch dump / front pipe and the same 3,5 inch cat and same 3 inch exhaust ~300rwhp 3psi and 710rwhp 24psi g35-1050 - Same 4 inch dump/front/cat and then a 4 inch titanium exhaust, 2 mufflers. ~780rwhp 25psi

I have an gearset in my other car, the problem is for the street the 1st gear is terrible. Really really annoyingly long. I have only seen a couple of options in helical + syncro with a street spec 1st gear. I didn't want a sequential for this car. I am glad I did it too, I am hoping with 3.89 it's the ideal setup. I know its only 5% difference but should drop the cruise rpm just enough and stretch each gear a touch without losing all the pickup.

Haha indeed, I am sure if you think about it you can figure out why Then again I have seen some interesting things on the east that suggest you might not have the same hurdles we do. Any idea why my pics stopped working ?

As I enjoy slowly(Years) building a car I have been through a few stages of mods so far and thought I might share my personal thoughts. Happy to share more info / experience if people are interested in any of the mods below. Start point Stock R32 RB26 , stock turbos, 4inch dump, 3 inch exhaust, link ecu, U98, 310rwhp, stock gtr driveline - What a slug, the car rev's nicely and drives nice but by todays standards a very slow car. G35-1050 install + E85 Running 3psi and also 300rwhp (Dyno is stock turbos vs g35 on 3psi). The gate being open so early(almost always haha) makes the low down power even worse. - Was almost the exact same to drive despite the dyno suggesting a massive gap. I guess slow is slow ? 6 speed Getrag install Kept the 4.11 and also put in a nismo twin clutch - This was good but actually a bit of a disappointment, I guess I had been suckered by the motive/ mines videos. - The car had no more response which in hindsight makes sense. What it did , was allow you to be in the correct gear when you need it, specially 2nd out of of corners was much nicer. Overall the car might be slower down the 1/4 due to all the changes required. - I do like the box though and knowing I can drive it hard is what having a car like this is all about. Boost time As soon as the car hit 24 psi on the dyno, making 500awhp on low timing .... POP goes the factory head gasket Head Rebuild with VCAM Usual metal HG, ARP studs and a Step 1 VCAM setup. Car made 700rwhp but was hitting a wall, getting high intake air temps and not responding to changes. - This was immediately magic, the difference in how the engine responded was huge. Power moved down 500rpm - VCAM is a high recommend. ARC intercooler Went baller and bought the top dog trying to find out why the car seemed capped at 700rwhp , given the IAT's seemed the stock gtr cooler could be a problem, plus it was dented. - By all accounts did sweet f**k all - looks really nice and is built REALLY well. 4inch titanium exhaust DIY home made and the next attempt in trying to find the restriction. Made 770rwhp and no more restriction, made 40hp more on the same boost, same timing. Dyno shows a tickle more boost and more timing. - WOW, immediate more low down torque, car improved in response and is now just an animal to drive. What's next : I need a new sump as I get oil pressure drop under high G. So going all out whilst on this mission. Neat 3.89 ratio's going in to drop the rpm slightly whilst cruising at 110 and stretch 1st out(slightly) Also a Quaife front LSD going in. I am also considering going a 4inch stainless as the titanium really sings, a bit much on the longer drives for old man me.