Results Of Gt3076r With .63 Housing And Ex Gate

[WYTSKY]

Hey guys,

A few months ago, I showed you guys my brand new Garrett gt3076r (with the 3037s core) and a .63 exhaust housing external gate:

I really wondered if it was ever going to be put onto the car as there were set backs for both me and Sam repeatedly.

The initial idea was to have a special adapter that had the screamer pipe attached to it and went inbetween the turbo and the stock manifold and tucked the gate right under the manifold to be hidden, it looked great on Sam's rb25 motor when he was testing fitting it.

Unfortunately it wouldn't fit on my car,even after shaving it down as much as possible, as we worked out because it is a 33 GTS4, it has higher chassy rails (same as a GTR) then a standard GTST, so after waiting months for it to be completed it had to be scrapped.

We then opted to simply weld the gate onto the back of the turbo, I was disappointed as the gate would be alot more visible and I would have to make holes in my new precious turbo, but didn't want to go with internal gate.

over the past 2 weeks I did most of the work myself with Sam giving me help and advice every step of the way and finally the car was ready to get onto a tilt tray to his shop on Friday.

He fixed up a few loose ends that I forgot about/couldn't do and called me last night to pick it up.

Now all I can say is it is great to see the hard work and money I have put into it have paid off.

Here are the results and before and after with my previous turbo.

vs

Loose ends: it doesn't have a blow off valve at the moment as the afm is relocated too close to the standard bov position so need to get it placed somewhere else, running on a bleed valve which is absolutely fine, but I already have a gizzmo ms-ibc and would like to use it. Also I am going to heat shield the whole thing so hopefully it can be somewhat hidden.

Also, quite sure the exedy cushion button is not holding 100%, whats the next step up? say from 300-350rwkwish?

Summary: We got it up to 295rwkw but wanted to make sure it was safe, so at this level, the highest knock is 20.

It has full boost (18psi) at 3,400rpm in 4th, pulls you back really well all the way to red line, it was slipping on the dyno so had to have 2 guys sitting on back and the screamer is ridiculous, way too loud, so I will plumb that back in.

Adam

P.S I will try to get some videos up soon

[R31Nismoid]

Why does the run stop early? (Thats twice now Sam in a week, take them to 7500rpm! )

Make sure the exhaust plumb is nice is about the only thing ya need to worry about.

I could feel a bit of a drop when i had my GT30 external and then plumbed as the exhaust wasn't the best back then

So be mindful is you plumb and there is a bit of a drop that'll be what the cause is!

Doesn't look too savage onto boost actually - nice and controllable curve!

[WYTSKY]

when you say drop, drop in power, torque or both?

your right interms of boost, it has a building up sort of feel as oppose to the on/off smack boost feel but i was going to worry about that further down the track, plus this is my only car so want to keep it somewhat comfy.

1 thing I have found interesting, even though this has heaps more torque/power, it "feels" slower, I think that is partially because I havent put the front drive shaft back in and the car just keeps skidding, but im not sure whether it is also the clutch having something to do with it.

[JonnoHR31]

both, if the gate isnt merged back in properly you'll create lots of turbulence and backpressure.

[STATUS]

Very nice, at the end of the day GT3071 and 3076 are by far the best bolt on option for skylines... even the internal gate ones work a treat.

Killer to see it pulled 224 on sams dyno, my memory is shit so i pulled your old hypergear file (jan 09) and it pulled 224 here too

[GTScotT]

Great results I was confident such a setup would work very well.

Congrats

[WYTSKY]

Thanks guys,

I will have to investigate about plumbing it back in then.

also Trent, I have never put your graph next to Sam's but yeh interesting find.

[R31Nismoid]

when you say drop, drop in power, torque or both?

your right interms of boost, it has a building up sort of feel as oppose to the on/off smack boost feel but i was going to worry about that further down the track, plus this is my only car so want to keep it somewhat comfy.

1 thing I have found interesting, even though this has heaps more torque/power, it "feels" slower, I think that is partially because I havent put the front drive shaft back in and the car just keeps skidding, but im not sure whether it is also the clutch having something to do with it.

The power was slowly dipping as you can see boost maintaining right near the end of the graph - just wondering what would have occured if another 1000rpm was utilised.

Similar to the hypergear thread at the moment with the run ending soon (ye i know that was boost control somewhat related)

So more interests sake to see if it was indeed nosing over like the graph might suggest.

Ye its actually more progessive than i would expect a .63 rear housing to otherwise be. I would have thought it to be a bit more savage actually.

Wondering if boost control is setup that way to make it more streetable as a side question?!?!?!

You'll soon find out if its clutch once you get all 4 wheels turning

[The Mafia]

hey mate, that is awesome. Here is my dyno with the exact same setup:

(GT3076, 0.63 rear, water meth, etc)

f**king great effort!

[geraus]

Very nice power indeed!

[WYTSKY]

wow mafia they are so similar, I'd guess the reason mine has about ~15-20kw more at the speed lines up to 6000 due to higher compression motor?

tell me, because I have not seen my torque graph and based on yours, do you find yours is also a progressive build up or a light switch type of boost?

[The Mafia]

Thats true, maybe hey. My motor was just a stocko though.

How is yours built?

I didn't find it to be like a light switch, it was quick building, but definately had a progressive feel.

If you really knocked it back a gear and hammered it it could come on like a light switch.

Beautiful to drive though! Get your torque up if you can

[WYTSKY]

ahhh yeh, built.... well......ehhmm.... stock n/a pistons, stock n/a rods, stock n/a headgasket, stock n/a rings... catch the drift? (live life 2 testicals at a time)

jokes aside Im definitely going to do the head gasket next when have cash to be safe, a healthy motor is extremely important to me.

and what you have said interms of how it drives is exactly as mine feels, if in gear it builds up fast with a decent pull back but drop a gear and basically light switch and minimal traction in 2wd

....and I bought new tyres 2 days before I put this in!

Thanks for all the support guys, really makes me proud of whats been achieved and proves that setting realistic power goals with sufficient funds and equipment actually gives you a great chance of achieving what you want.

[JonnoHR31]

dont pull it apart just to upgrade the head gasket....

[femno]

Holy shit 18psi on a stock NA motor!

Thats awesome!!

[STATUS]

ahhh yeh, built.... well......ehhmm.... stock n/a pistons, stock n/a rods, stock n/a headgasket, stock n/a rings... catch the drift? (live life 2 testicals at a time)

jokes aside Im definitely going to do the head gasket next when have cash to be safe, a healthy motor is extremely important to me.

and what you have said interms of how it drives is exactly as mine feels, if in gear it builds up fast with a decent pull back but drop a gear and basically light switch and minimal traction in 2wd

....and I bought new tyres 2 days before I put this in!

Thanks for all the support guys, really makes me proud of whats been achieved and proves that setting realistic power goals with sufficient funds and equipment actually gives you a great chance of achieving what you want.

dont bother with the HG, it should be sweet as is.

[l0WRB]

nice result

begin to wonder if .82 would make that much of a difference

im 290rwkw at around 1.3bar boost aswell with .82 rear

[TiTAN]

the NA compression vs turbo compression will make a difference to your results justin

[WYTSKY]

I always thought that was required with higher compression motors to sustain good power? well as long as it is safe and putting out good power then I am happy!

thanks guys

[hypergear]

The NA's down low response and power seems to be lot more responsive. Good result. My SS-3 prototype with built in ExWG is almost finished in subject to out run GT3076s. Will be a good comparison in few weeks time.