zebra

This is what i would like to know too. Like I said before, I had the same setup on my Gtst with no dramas, the whole point of this exersise is to hold the wastegates shut for as long as possible, not constantly bleeding off exhaust gas.

I lived in tweed heads for 12 years lol. Just unbolt the exhaust at the front pipe (so the cat is unbolted too) and give it a run. Won't hurt anything and will give an indication if what is going on

Fairly conservative timing up top. What comp are you running? I guess with the 3.15l and standard cams there is huge dynamic compression

Sounds like you live in ballina or something. Don't worry about the workshop just ask if you can have a couple of runs at the local dyno with the exhaust dropped and see if it makes a difference.

Fair call on the response thing. I figured that the larger wheel and extra blade would help tesponse. But when you mentioned the extra weight and larger. Exuder it clicked that I was thinking ass about. I was taking the extra blade area into consideration only. Does anyone know of a 12 blade l2 turbine wheel size. Would make for an extra responsive 20g setup. But might involve to much f**king around. I might measure my kkk k27 turbine wheel tomorrow and compare......wow that took forever to type on my phone while drinking beer lol

One piece is always good. By the sounds of it there will be a lot of nice skylines entered

Watch it flex once the head and turbos go on Duncan. I have one too buy I'm going to weld a brace in before I stick my v8 on there.

Td06SH-25G in theory should spool earlier but fall over earlier in the top end due to the larger turbine.

I ran my R33 that way woth no dramas as well.

Do you think my idea will work on the 1j Trent? I dont have boost control issues, just chasing a bit more response.

Yep I have two toyotas...so fkn what! I love NA engines, but an NA RB in a R33 is just fkn stupid when there is a factory turbo option.....If you pull your head out of your ass and look up a few posts you will see I gave advice on what I would do if I was going to build an NA RB25.. SO STFU do some reading and you might learn something.

Swap the middle and left hoses

Just because the rods looks the same size, doesnt mean shit, its what they are made from/journal size that matters.

Have a cry mate. We say it BECAUSE Every thread in here is the same old story i.e Im on my P's I want to go fast but cant have a turbo We are trying to help people not waste thousands of $$ for a handful of horsepower

Have a look at the PDF, it tells you how to run the lines Edit - here is one for the EZ II http://www.xspeed.com.au/manuals/HKS_EVC_EZ_manual.pdf

From what I have seen and have heard its around 17-18% for a GTST skyline, different cars have different percentages, eg the 300kw VT2 HSV GTS made around 220-230rwks due to the big T56 gearbox, with has massive gears internally etc, so if you put the same motor infront of say an RB20 box you might see around 240rwkws, same goes with Diffs. Eg going from a Borgwarner diff in an older Ford V8 to a 9" diff means you instantly lose 25rwhp due to the way the gears mesh (its what gives the 9" its strength) Troy - the more power you have the more heat everything gets, think of it as: the more power you have the harder the gears in the gearbox/diff mesh together, the harder they mesh the more friction therefore heat is produced so the rear wheel power figure will be lower.

I think what Ash is trying to say is: 550rwhp is way to much grunt for the S14 chassis already and combine that with an inexpirenced drive on the track. I tend to agree, you will be faster to begin with with 400rwhp or less and learn the finer points of going quick on a circuit.

The GTX turbos have only just been released, there are NO results for RBs anywhere, so anyone saying they will smash blah blah turbo for response and power is simple talking through their ass, until it is proven multipul times on RB's then nobody can say they will be better.

All turbo cars will have more pressure in the cooler pipes than the plenum at low throttle, eg the RB26 turbo shuffle. (kinda different due to the ITBs but same concept) I have 2 boost gauges lying about btw. (maybe even 3 lol)

2 threads in 2 hours about basically the same thing Look here http://www.skylinesaustralia.com/forums/topic/103095-rb20-turbo-upgrade-all-dyno-results/ and here http://www.skylinesaustralia.com/forums/topic/66556-forced-induction-quick-ref-guide/

Nah -15" of mercury in the plenum and 3-4psi in the cooler pipes at 110km/h in top gear.

So ive been thinking and doing some testing on my 1jz twin turbo. For those that have driven a Stock turboed 1jz they will know they are a bit lazy onto boost. So my theory is because the internal gate pressure feeds are on each compressor housing the actuators are always seeing boost, my testing was to have a boost gauge reading off one of the actuator lines, and driving around they are seeing a few psi just crusing at light load and more when accelerating away from a standstill. Which is probably why the standard BOV/recirc valve is always open until +ve pressure is reached in the Plenum, so fitting an aftermarket BOV has helped boost response quite a bit. Now, standard boost on these things is around 8psi, so the actuator springs are quite soft. IF I were to move the lines to the actuators to the Plenum they will see vacume driving at light load, so in theory the gates should be completely shut, hence bringing the engine upto full boost earlier/quicker because the internal gates aren't bleeding off exhaust gasses in the turbine. It makes sence to me to move these lines and block off the standard pressure feeds, but I would like your advice before doing so, because the engine bay is a head f**k to work around. I would also fit my EBC to help things along too. Cheers Andrew

Paul I dare say you are right about the NA not having them. The R33 Gtst's have a 2bar sensor for the factory boost gauge as well.

not sure if this applies to your EVC but its a start http://www.xspeed.com.au/manuals/HKS%20EVC%20KpA%20Install%20Instructions.pdf

Only if he has an ABN lol