Project Rb31dett. The Development Of My Open Deck Rb Engine And The Quest For More Torque!

[TiTAN]

5's and 7's yes, 9's no

Ever driven a stock supra twin turbo? Im certain 9's on a 3L would feel the same, its too responsive and feels like it seriously lacks top end

7's, build rb26/30 with 260 cams and lots of boost. Try catching that on a hillclimb!

you cant beat the stock supras for response, full boost at 1500rpm then a bit of a surge around 4500 where the second turbo comes on.

[N1GTR]

Yeah that's how mine drives, but the first turbo is never off, the second you touch the pedal you can hear the turbo

I honestly think it's too responsive and the downside is that of course you can have too much response that power suffers

Still, I'd love to try some 5's and 7's on my setup or this hideck-it would be all kinds of fun

[drag-on silvia]

anything to be reported ian?

[GTRNUR]

A little...

Purchased a trust extension front pipe and a few other parts last week so I have everything thats needed to put the engine in the car now. The front pipe off being ceramic coated. The plan is to have the engine in the car and driving inside a month. I'll be posting pics of the entire process once it starts.

Cheers,

Ian

[-_-StRyDeR-_-]

Great build! hows the progress of getting it into a car!? lol

[GTRNUR]

I stripped out the engine bay of the car and removed the spliter and under trays yesterday in preporation for next week when the new engine will be fitted.

The car will be trailered to a workshop this tuesday and with any luck will have the new engine installed by thursday. Im having CV's rebuilt and a bunch of other small small maintenance things done at the same time.

The workshop doing the r&r are allowing me to take a few photo's along the way too, so i'll post up the installation images at some stage.

Edited October 16, 2010 by GTRNUR

[Beer Baron]

very exciting mate. keep on trucking. I know lots of people are keen to see your progress.

[GTRNUR]

Here's the latest...

The engine now has ceramic coated Trust 3" extension dumps bolted to the GTRS's. Ive not had the front pipe section coated yet as I'm not sure how much material will need to be added in order to get the pipes to clear the bodywork... factoring in the 20mm height gain of the high deck.

The car is currently on the hoist and will with any luck have the engine back in there by wednesday next week. The workshop is flat out at the moment, but thats ok.. I'm not in any hurry.

And here's a a few pics...

(sorry to see your selling all your stuff too Richard, epsecially the prime garage engine).

[Marko R1]

great turbo selection!

i'd luv to have the ability to have installed my engine like that pic - soooo nice

[GTRNUR]

Im picking up the car from the workshop tomorrow morning. The engine is in and the basics are all connected. Only have intercooler/intake piping to do over the next few days and with any luck i'll be driving on the weekend.

The only fitment issue so far was the flanges on the trust dump pipes were close to the floor, so a a little bit of massaging fixed that. The Y pipe also needed about 2 inches of material added to get them low enough to round the bend and run parallel to the floor.

Here's a couple of pictures of the re-assembly.

Cheers,

Ian

[Weapon]

Thats awesome Ian, looking very good mate. Might have to make another trip to Cairns to check this beast out again

[Beer Baron]

great news mate. hope you have a weekend of fun testing ahead of you.

[GTRNUR]

Picked up the car today at 10am, and started putting it together again after lunch. All in all I made good progress, and the only things remaining to do to prevent a road test was that I didnt buy enough coolant, and I need a flange to finish the exhaust.

Re-installation of everything went really well. Im actually amazed at how well it all still fitted together. Ive taken a few pics of the re-assembly.

The return spliter pipe from the bovs bolted straight on with just a little more bending of the front hose required. The 80mm pipe from the twin turbo pipe to the intercooler fitted without modification, as the standard piping on the passenger side of the car was plenty long enough. The tape line shows how much of the pipe actually was still inside the rubber hose.

Getting the airbox back in was a little tricky, as the air supply hose to the front turbo has to be compressed a little. The spring in it prevents it from colapsing. I always have trouble getting that hose back onto the MAF sensors, so I dont think it was any more difficult than usual.

The airbox bolted back in place with no alterations. Standard cold air scoop installed for the moment. I'd like to source a nismo one perhaps one of those fancy gruppe carbon air boxes for it down the track.

Drivers side I had to cut and insert 60mm of 80mm tube into the return hose. The extra length required here was 25mm.

New billion hose kit installed un-modified on the pwr radiator installed, no problems. If anything I could hace shortened the top hose about 10mm as the height puts it closer to the top hose connection on the radiator.

I did actually start and run the engine for all of 5 seconds. Electrically everything worked, and oil pressure was good. Still have plenty to do before doing a road test though. Hope to be able to take it for a test drive on the weekend, and I'll be booking some dyno time mid next week to do the engine run in and more testing. I'll be taking video of the whole process.

That is all.

[Weapon]

Great effort mate. Its good to see it so close now. Will be very keen on seeing some footage of it on the dyno/driving

[Beer Baron]

getting closer... very excited.

[zebra]

I love how it looks dead stock but is hiding 3L and the engine numbers match

[GTRNUR]

I love how it looks dead stock but is hiding 3L and the engine numbers match

Vehicle must appear to be stock... Monster Garage! That has actually been a part of the goal from the start, as per what we are told of the RPMGTR RB29 apparently looking stock under the bonnet. If I can do the same and make 450awkw, well I think I will have really achieved something.

Speaking of achiving, the car is now running. I finished the last of the exhaust mods this afternoon, started the car and bled the power steering. Then spent a few hours chasing a vacuum leak that continues to elude me. Im pretty sure that its the passenger side hot pipe hose that goes to the intercooler piping, and that I will be lengthening that pipe a little after all.

Here's a video link of the engine running. Throttle response seems nice too, especially considering its runn a tame ~25 degrees ignition when the throttle is cracked open.

http://www.youtube.com/watch?v=viAUjT4sNsQ

The engine is now running with a power fc, and you can see that from the tracking when I rev the engine and close the throttle the airflow still remains high indicating the air flow sensors are still seeing airflow, so it over fuels the engine and nearly stalls it out.

Unfortunatly ive got a full days work tomorrow so im not too sure i'll be chasing this hickup tomorrow afternoon, or if it will be a weekend task.

Cheers,

Ian

[zebra]

No sound?

Does look good though, Its Beer Bitches old car yeah?

[GTRNUR]

Standby... fixing the sound...

Yes its Beer Baron's old R34. I nearly said havent changed much on the car... then I re-thought that statement!

Edited October 28, 2010 by GTRNUR

[zebra]

hahahah, well outside it hasnt changed much lol