Piggaz

We must tune them richer over here

Forgot about this thread. Time for a little update; New setup; GT Block Tomei 2.8 (87 mm pistons with Titanium top ring) 9.0:1 compression ratio 260 at 10.85 mm cams. (custom grind with a much more aggressive ramp rate than a typical "Jap" cam.) Full effort HKS/NAPREC head. (1.5mm OS valves, NAPREC CNC machining, intake squish pad removed, decked 1 mm) Ported manifolds (to head and turbine housing) ID 2000 cc injectors Twin 044 feed pumps and single 044 lift pump Nismo 0.9 mm head gasket Nismo Plenum Nismo intercooler Tomei series 1 dumps (72 mm internal diameter) Garrett -5's with ported turbine housings Racepace motorsport twin 3 inch exhaust Blackbox ECU (Built in conjunction with Unigroup Engineering. This ECU is yet to be released for GTR's) Ethanol flex fuel setup Ross Tuffbond crank trigger. (Timing is no longer taken from the CAS) Stock airbox with a $10 paper filter in it. United E85 Modified turbo intake pipes Made 472 RWKW with the EBC on (highest was 474). Peaks at about 28 or so then trails back to 25.5 ish top end. With the EBC off (20- 21 PSI) it made 441 RWKW. Tuning for very strong midrange midrange more than anything. On PULP it made a an easy 425 rwkw at 22 PSI IIRC

I was more after the shape of the curve. Still good, be interesting to see what you pull

Lol

^^ got a dyno sheet?

C spec will piss that in!

How much grunt are you chasing?

Sold pending payment.

Item: Odyssey Battery. Model # PC680MJT Location: Georges Hall, Sydney Price: $250 Condition: Brand new. In the box, unopened Payment: Direct debit to my account, Or cash on pickup (if in Sydney) Reason for sale: Got it replaced under warranty but needed a battery then and there. I can’t use two battery’s in the GTR, so I’m putting the new one up for sale. How to contact: Via PM. PC 680MJT Specs: 680 cranking amps for 5 seconds 595 cranking amps for 10 seconds 525 cranking amps for 20 seconds Short circuit current over 1800A 17 amp hours 25 minute reserve capacity with 25amp load With metal jacket and automotive terminals Length 7 1/4" Width 3 1/8" Height 7 3/8" to top of terminal Weight 16 lbs - Nice and light for those chasing Kg's. I got a hand written note from "Battery Allsorts" at Girraween, NSW - where I bought it from saying that it's a brand new item. RRP through those guys is $320 I believe.

You bought a Tomei 2.6 then when it pops rebuild with a 2.8? Is that right? I'm confused haha

Have you gone 2.6 or 2.8?

How was the crank when you pulled it out? Lol

Good excuse to build a real engine

Built or standard?

That price, it'll be the journal bearing option.

M12 x 1.25.

It's only 8.4:1 comp ratio isn't it?

I spose the tune would have a massive part in this. Mine lasted 7 years with anything upto 2.0 bar shoved down it... Only died because the oil pump had a hissy fit.

Ill try and get the sheet. Or it could have been the power low end was the same but boost levels were pushed to the right a tad on the 5's. Leave it with me.

What's wrong with running 25 psi Ants?

There is one out at unigroup on the same car. On the dyno, they came on exactly the same but the 5'a made more grunt. However, to drive they were a TOTALLY different car!

"Full boost at 4000" - what's full boost? 5 psi or 35 psi? "Full boost (unless pressure stated) at x" should have an auto correct on this forum. It means sweet FA! As for not making any grunt low end due to the 2.6 and city driving, throttle control?

Why such high base pressure? Injectors need a little push along?

Item: R33 GTR V spec rear diff housing and drive shafts Location: Georges Hall, Sydney Price: $50 - Just want them gone. Condition: Fine. Came out of my car on Monday Payment: Direct debit to my account, Or cash on pickup. Reason for sale: I went to a mechanical diff setup How to contact: Via PM. I wont be shipping this interstate as its a big, heavy item.

Would not having the gasses merging back into a single pipe have any effect on this like 98% of low mount GTR's out there are?In regards to the "tuned length" debate, wouldn't the gas pulses be all messed up after going through the turbine wheel?