Rips Built Rb26Dett Swapped Gts4 From The Land Down Under!

[Mohsen]

f**k man.... the sedan curse

[Jazzadub]

f**k man.... the sedan curse

I wish I saw this earlier! Let's just say transplanting the heart of the GT-R into the body of the sedan has unleashed the wrath of the Skyline gods!

What problems have you had with your sedan?

Anyway, time for a well needed update!

The Bad

The valve issue was sorted, and I also got better condition second hand valve springs with better tension!

However, when it came time to tuning, what do you know, the dyno control computer broke!

That was a couple of weeks of nothing happening - bad timing or what!

Once that was sorted, and the car was happily running on 6 cylinders, you'd think it would be smooth sailing to completion! But no...

The tuner was unable to get a stable ethanol reading because of air bubbles being introduced between the FPR and the T-join which connects to the ethanol sensor.

We're still not sure why or where the bubbles were introduced, but they are being introduced after the rail, so hopefully it's no cause for concern.

To fix the problem, we simply turned the T-join around 180 degrees, so that the feed to the ethanol sensor pointed downward, instead of upwards, causing all the bubbles to go back to the surge tank. Thanks gravity!

You'd think that would be the last problem, but since then there has been one more problem (touch wood!)

Too much fuel trim was required in the ethanol correction map to get a nice AFR. Fuel pressure was stable, so the injectors were pulled out.

The mesh inside them was clogged up with a tar-like substance! My suspicion is that the E85 flushed out everything in the tank that petrol hadn't, and it went straight through the low and high pressure-side filters and accumulated in the injectors.

What we are doing is replacing the two filters immediately before the fuel rail with 10 micron cleanable ones.

I understand that this will just move where the crap is accumulating, but I am hoping that the bulk of the crap has already flushed through, and that it will subside over time. Anyway, at least the filter elements will be cleanable, so a bit of brake cleaner should sort them out every few months, if need be.

(If anyone has any experience on E85 clogging shit up please let me know - I know about the long term effects due to the low concentration of PIB, but I think this is different because of how quickly it accumulated)

Fingers crossed that is all the issues sorted! The tuner has told me that he will do his best to get it finished this week - I sure hope he does!

The bought

Even though I don't have the car, it's still tempting to buy things!

So in preparation for a track day, soon after I get it back, I have purchased the following:

• 1L AP Racing PRF660 fluid (should be similar to Motul RBF660)
• 2x DBA T3 slotted 280mm front rotors (I had thought the brakes were like non-Brembo GT-R ones, but they are smaller - hopefully they do a reasonable job!)
• 2x DBA T2 slotted 292mm rear rotors (hopefully no brake bias issues!)
• 2x Pagid RS-29 (Yellow) front pads (these are the endurance compound they use in Le Mans etc.)
• 2x Ferodo DS rear pads

• GT-R gauge cluster with 260kmh Nismo speedo

Also got an Infrared thermometer which reads up to 900C (should be good for checking tyres, brakes and you can't have too many gadgets!)

Thanks for reading, and hopefully I will have the car back soon, so I can put more updates on!

[Jazzadub]

AWESOME

Car passed it's warrant, and it now has rego.

Picking up the car tomorrow!

Can't wait to see all the work that's been done, in the flesh!

[Manuel Kasko]

Congrats! Can't wait for the next update

[Jazzadub]

It's back!

The drive back was great and I'm so pleased to have it back after such a long time!

It's been well worth the wait!

Power delivery is incredible, the turbos start spooling up at around 2500 and its on at 3200!

It measured 260awkw with 98 on a 4wd dyno, at about 1.1-1.2bar, but it feels faster than it did before, when the power was supposedly 330wkw!

I can't wait to put some E85 in it and raise the power by 60kw to the 320awkw it put down! I think that is perhaps at 1.4 bar.

The injectors were cleaned and flowed, and hopefully the inline 10 micron filters keep any crap out of the injectors.

Since I drove it back on Saturday I haven't been able to just leave it alone! So I have changed the front brakes to slotted DBA T3 rotors and Pagid RS-29 yellow pads, sorted the catch can mount properly, adjusted the scales on the wideband and oil pressure/temperature gauges, configured the ECU to throw a CEL under 60C and over 100C ECT, ordered a standard 76C thermostat to replace the low temperature one, and other stuff I'm sure I've forgotten. The brakes made a huge difference, as the feel was a bit "dead" before, where as it is very sharp now. I know the 280mm rotors are going to overheat at the track, but I figured I'd at least do the best with what I have for now!

Tomorrow Julian from Obsessive Security (Wellington based) is going to add GPS/SMS functionality to the alarm, fix the drivers door lock, rewire the head unit (which is playing up), and give the alarm system a general looking over. I am also considering a steering wheel, gear stick, or brake pedal lock - any opinions on which is best? I already have a kill switch installed and the alarm is a good brand with an inbuilt turbo-timer. (I think there is only one brand which offers this).

Some pictures!

I took this picture because it looks like it's broken down! - It hasn't!

Damn - looks good!

My sister took this one and did some 'shopping!

Thanks for reading!

[Jazzadub]

Sister just put up another photo - looks so good!

Thank god for grey paint always looking OK, when in fact it's really quite shit!

[Manuel Kasko]

This is awesome, engine looks so sexy!

I bet you can't wait to see what it actually feels like with the extra power from E85.

[gtr jet]

I did the same as you. Went from 260kw @16psi on 98 to 325kw @20psi on E85.

You won't know yourself once you make the change. So much nicer to drive.

[Jazzadub]

Just wish E85 was easier to come by in Wellington NZ!!!

I did the same as you. Went from 260kw @16psi on 98 to 325kw @20psi on E85.

You won't know yourself once you make the change. So much nicer to drive.

[Jazzadub]

Woops!

Car has been going great and I have been tinkering with it bit by bit over the week I've had it back!

However, I had a brain fart and decided to do a 7000rpm launch with the single plate 5 puck clutch!

Despite pulling very very hard, there were some bad noises as the clutch decided to munch itself!

Bad vibrations, and a lack of ability to change gear while the car was running ensued!

Fortunately I managed to limp it home, so maximum embarrassment was avoided!

The next day I tried to start it and it wouldn't turn over!

I was shitting my pants and spent a few hours thinking that the battery was rooted!

Eventually I decided to turn it backwards a few degrees, at which point something fell loose, and it fired straight up!

Not going to push my luck any more though!

Anyway, thanks to rave testimonies from Piggaz and others, I have decided only the best will do the job, so the following is on order!

Managed to get one for NZ$2410 shipped, all duties included, which I didn't think was too bad!

While the box is coming out, I figure it's worth giving the box and rear diff a treat, so I will also buy some Redline Heavy Shockproof Gear Oil, which should give everything a new lease of life!

Would 6 quarts (5.68L) be enough? From what I found the gearbox is 4.1L and the rear diff is 1.6L, so it would only be about 20mL short, which shouldn't matter.

Hopefully I will be able to take it to a track day soon after this is sorted!

[Piggaz]

Good choice .

C spec or standard? Prepare for a decade or longer of not worrying about the clutch

[Jazzadub]

Good choice .

C spec or standard? Prepare for a decade or longer of not worrying about the clutch

Competition spec of course! Thought I'd overkill the specs in that department considering I am considering tracking it and doing a few launches!

Do you have any recommendations for launching with the clutch? Will preloading the drivetrain for a second or two prematurely wear out the clutch or should it handle that fine? Or is the power level too low to risk breaking anything (not planning on launching at a prepped drag strip anytime soon)

Also, any idea on the fluid amounts? Will 6L be enough for gearbox and rear diff?

[Piggaz]

I've just taken up all the slack in the driveline first, dial up go.

I have the Nismo slave in mine, I've never driven a c spec without it. Nismo recommend not using it but meh, no issues here.

I can't remember how much goes in where off the top of my head. A quick search in the driveline section will tell all.

[Jazzadub]

So rev to launch RPMs, handbrake up, clutch out a touch, then drop handbrake while letting clutch out and go?

Or a different method?

[Jazzadub]

Nearly breathing again + dyno graph!

Nismo clutch arrived on my birthday which was a great present!

Now to arrange to get it installed!

This thing is huuuuge!

Also, dyno graph from an E85 run in 4th gear showing all the response!

[Jazzadub]

Complete

I had the Nismo Coppermix installed earlier in the week and couldn't be happier!

The pedal is a bit firmer than the puck type clutch that failed, but much easier to modulate, and just overall feels much more refined than the last one!

I have done around 130ks on it, so not too long before it should be fully bedded in!

I also put in the rear slotted rotors and Ferodo brake pads, which didn't really make a big difference, like the front ones did, but they look a lot better!

Changed out the thermostat as well, which is a prick of a job! The old one was opening at around 35C and was very open at 50C, despite being a standard 76.5C unit!

I replaced it with another standard Nissan thermostat. Seems to warm up much faster, and the temperature doesn't drop off once I start moving, which was annoying!

The only thing of concern is that the oil temperatures seem to sit around 90-95 now.

With a trackday booked in for the 3rd of August at Taupo, I just hope that more of my time is spent boosting, rather than doing cool down laps!

I have the CEL configured to come on at 100C ECT, and the scale on my oil temperature gauge will touch into the red at 112C and top out the scale I configured at 120, which means time to cool down!

Will hopefully have some videos to post up soon!

[Jazzadub]

Videos!

I went to my first autocross today!

Still learning but it was a great experience and I made huge improvements over the day!

Links to the best videos below!

https://www.youtube.com/watch?v=1jFnfSOTgZk

https://www.youtube.com/watch?v=TZyicuLldsU