Just Cracked over 330awkw

[600hp]

The reason we have done the whole thing straight up is because when you start to replace a part with something else your putting all the strain on another part so we tried taking out the weak links. by doing it all in one go it did cost a lot but some people rebuild there engines multiple times due to no not doing somthing they should have the first time.

the main reason is because its driven all the time and the car can not be off the road constantly.

I'm going to have a look at a JUN inlet Plenum today and we will mate it up with a QF45 throttle body as the 100mm ones we have been told is too big for our application.

to answer another question ues the cars engine should be able to handle a lot more power but we are only using GT-SS turbos(street driven all day).

but i thinkit will be interesting to see how much power these little turbos can produce.

[pnblight]

Yep you dead on it thats the best way to do it ,but its not always posible of everyone

if you do manage to find jun plenum could you post a pic as havent seen a good pic of the jun unit as i'm thinking of upgrade mine or building custom unit

cheers best of luck with the gt-ss

[Sydneykid]

This is NOT a critism in any way, I am only interested in WHY you have done things, the reasoning behind the decisions.

You have chosen GTSS's for their response, a very worthwhile aim for a road car. But there are a few things that you have done (intend to do) that appear to me to be the exact reverse of that strategy;

1. From you posts it sounds like you have used combined dumps, it is pretty well accepted that split dumps give better response. What is the reason for going for combined dumps, am I wrong in going for split dumps?

2. It is also accepted that a larger plenum reduces response (more air in the inlet system, more inertia etc). Help me out here, why are you are going for a Jun inlet plenum which has larger internal volume than the standard plenum?

3. Again it is generally accepted that the standard GTR throttle bodies, located close to the inlet valves, give better response than a big single throttle body located at the other end of a large plenum. Why are you going to a single Q45 throttle body, I don't understand?

4. I noticed in your posts that you have HKS PODS, but I have not seen any mention of heat shielding or ambient air feed. The ingestion of hot air from under the bonnet is well known to lower response. If it is it right that you have left the POD's "open", if so can you please tell me why?

5. From you posts you have gone for upgraded head (ARP) an main (Jun) bolts. I always lean towards studs rather than bolts, can you please explain the logic behind using bolts?

6. You refer to Tomei camshafts, but not the lift or the duration, can you please let me know what timing and lift you have chosen and why?

7. I haven't seen any mention of upgraded AFM's in you posts, are you still using the standard GTR 65mm AFM's?

I repeat, no critisim, I am simply trying to seek out the different thinking that you have employed. In the above areas it is somewhat different to mine, not WRONG or RIGHT, just different. If I don't ask, I won't learn.

[meshmesh]

well done 600hp, good to see some realistic genuine numbers, unlike some dyno queen d...'s who need to grow up and get on with it. Most of us were holding our breaths waiting for merli's result, and I never really found out what hapened after his problems, and was so keen to see the results.. I think he even had some NOS planned aswell.. Anyhow, you must be pretty happy with the result as most were saying the GTSS's would struggle getting over the 300-310mark... That's an impre$$ive list you there... looks like you spent some well earned $$.

as far as response, how early are they coming on boost? I "think" I agree with SK, but he's looses me a bit with his tech talk (probably has something with getting kicked out of school at 15) but why would want to change the plenum.. SK and others have confirmed the GTR plenum is pretty capable of "I think" 800hp or more..

[meshmesh]

here's some more whilst I have nothing better to do.

some stupid comments from no drainer

ha i'm glad your thread has been left alone by so of the half wits getting around on this forum

FFS.. you really have a problem. And SURE THE MODS HAVE TO CHECK THIS ONE OUT.. wa wa wa wa :gaga: .. sort of ironic.. baby sounds, coming from WA

your asking me how to launch at drags (jesus i only every done one serious race meet seriously)

Your experience really shows, your knowledge is certainly a great benefit to all.. geez I think you could even teach ben from racepace and sydneykid a thing or two..

[600hp]

I just wen tand spoke to Jim from Croydons regarding the new plenum as for greater lag has anyone had a jun plenum but on there car in australia because jim has, and the fact that he gained reponse from putting the plenum on was good to hear and the car that had the plenum installed has HKS 2530's. he said they had full boost at 2500RPM about 22 psi i think.

Ive seen the greedy intake and the JUN inlet is much smaller, thou looking at in pickers makes it look very big.

i've also looked at an Endless intake and that too is very big.

Sorry Sk as for the head studs/bolts it must have been a misstake as i'm not a mechanic and Jim does all the work.

and for the hks pods yes they are expossed but only for a week longer until a box is made.

The cams are 260inn and 260out with 9.15mm of lift.

as for AFM thats one of the things i forgot to put up they are Z32 afm's.

the whole issue with the combined dump thing, they were not rederly availible at the time and we were told by someone who sold them (in queensland)that they had got more power with the combined dumps. they seem to work.

[pnblight]

ha 600hp was just think through in my head what awkw to rwhp would be i dont think there alot been us ,as you would exspect from similar turbos and boost

332awkw=443awhp the next is abit of a guess ~485to495rwhp does seem about right

as if it is it good to see the tomei cams and turbos work very similar `30odd hp different

and only 1psi difference betwwen us ,so i wounder why in the west this would seem totaly unbelievable but in the east normal ,i think some guys need to do the sums and realise

the number are just number and the difference are small

GREAT WORK MATE stick with it ,and i'm glad to sight see someone walk a different path to the norm as if we didnt what would we learn.

[600hp]

cheers mate, i worked it back as well the whole horse power thing that is.

i think because over on the east side everyone uses KW and most would think that your car was 4x4, can you get them to change the settings from hp to kw and then do a run in 4x4 and see what the results are? it would be interesting to see what the diff is is.

[Kaido_RR]

600hp, in perth we only got 1 dyno which is awd dyno makes it hard

[pnblight]

i would have to go to a different dyno and just for that sake i cant see it being worth it ,plus unfortunate some of the dynos here are hub dynos which dont read any like normal as there is none of the loses associated with run wheels etc

but in my opinion i think there only maybe 30 kw between us at a guess and thats all it is and considering the turbos (mine slightly bigger) sounds pretty good to me (as in close)

can i ask did you guys tune the cams much out of interest ,you can pm the answer as i dont want to bring this arguement in to this thread (i'm just interested)(as we were surprised as much as everyone else with my setting)

CHEERS you most be counting the days till you get to the track or strip yeah lol

[600hp]

Croydons do all the tuning of the car and i saw jim do the cam adjustment and the differnce was just amazing. it comes on boost heaps earlier.hitting very hard about 4000RPM, i'll try to get a better look later but when your driving it and the power comes on you don't want to be looking down as it pulles with soo much torque. I'm not very good with computers i don't know how to put a photo up of the dyno graph.

i can tell you that maximum torque hits at 125 kph in 4th with a bit over 7000n's.

Can anyone give me advice on either the JUN plenum or the Kaminal plenum that hi octane sell i'll give them a call tomorow.

the JUN is about 5000 and the Kaminal is 1500, and please don't say the diff is 3500.

Thanks

[pnblight]

the car charactorist sound very similar mine 4000 to 5000 is just breath taking

you dont like the greddy plenum as they are well prices and i believe not to hard to get

[600hp]

I would like to try the single throttle body type.

Jim has tried the JUN plenum and he said it just changes the car soo much.

he said its expensive but it did wonders for a GTR wicj had a 2.7 litre kit in it. and very similar cams.

[lwells]

You could also consider the Nismo plenum. I can't find the web page, but somewhere they had graphs that showed (if I recall correctly) an improvement in both response and top end.

Edit: Here's a little more info:

http://www.skylinesaustralia.com/forums/sh...ead.php?t=25803

LW.

[dan_the_man]

600hp, in perth we only got 1 dyno which is awd dyno makes it hard

psi has awd dyno as well mikey...

[MarioGTR]

You could also consider the Nismo plenum.  I can't find the web page, but somewhere they had graphs that showed (if I recall correctly) an improvement in both response and top end.

Edit: Here's a little more info:

http://www.skylinesaustralia.com/forums/sh...ead.php?t=25803

LW.

The JUN plenum is the only one I have seen (and I've seen a lot) that is designed properly - as for the GReddy plenum; it is nothing more than a toy.

HKS GT-SS are capable of making around ~350 AWKW, but that's at the extreme end, and Jim obviously tuned your car for reliability and streetability - which sounds like what you'd asked for.

HKS GT-RS are capable of somewhere around the ~410 AWKW mark.

Note that there are a myriad of variables here, things like cams and their dial-in, valve lift, exhaust manifold design, intercooler, fuel pressure, tyre size and pressure, and much more affect your final power figure, so don't take the above figures as gospel.

Mario.

[lwells]

Hi Mario,

Have you had a play with the Nismo plenum? I was reading a thread on GTROC UK (those rich UK boys have all the toys!) where they were comparing various plenums and the conclusion seemed to be the Greddy was rubbish, the JUN was good but designed for big HP (ie. mainly drag) applications, and the Nismo also well designed but aimed more mild configurations.

Cheers,

Lucien.

[600hp]

As for the maximum power out of the GT-SS turbos i don't know of anyone finding how far they can go .i think if we do the 4''exhaust and the JUN/kaminali Plenum we should.

we are also going to run C16 once the other things are complete to see how far/ fast we can go.

also Jim has seen something like 600hp or so at the wheels with a car that had 2530's and the JUN plenum.as well as heaps of other stuff.

[raist60]

pnblight: You've spent a portion of this thread bitching about "eastern" people, leave that shit out of his thread...

this car is actually the perfect example why we "eastern whingers" call your quoted power bullshit, look at his mods compared to yours, and he has 90rwhp less, bullshit its just that his figures realistic and his motor is actually built properley

600hp thats a damn impressive list man, should be wicked on the circuit

[600hp]

Thanks for the coments, but if we had different turbos such as pnblight's the result could have been the same.

i think it's good to see at least most people are posting what has been done to there car, so we can all then make the choices so as our car behaves as we would like it to.

I've read a lot from this forum and it has helped us decide what to put on our car. the problem is that with slightly different turbos it throughs everything up in the air.