Piggaz

Dont HKS have 3 different cam profiles? Which one would be the ideal one for a -5 setup? Matt has the smallest version.... But then HKS recommend for a RS/TO4Z setup the biggest duration and lift setup in the V-Cam they half....

How the quest for the ultimate curve with over 400RWKW continues.

Well I have 270's @ 10.25 so more duration and less lift. I only rev mine to 8 - 8.5 so i could get away with the 260's...

NickR33, Your running 260's @ 10.8 in your engine right?

Rightio. Another cheeky question. Would a 90 mm exhaust from the front pipes back (twin 3 inch into a single 90 outlet) be big enough.... or do we "really" need a 4 inch. 3.5 inch (90 mm.. close enough) vs a 4 inch (101.6mm)

I think this thread will answer every question for you -5 vs -10's Im sick of the -10's/RS's on my car. On a 3.0 they are the bomb... 2.8's just dont cut it.

Its just funny what a little bit of extra capacity does. Then you have the theory or small duration and large lift.... IE a 260 @ 10.8mm. Throw Marks car built by HKS in the mix and that has 1.5 OS valves with relatively small cams (264 @ 9.7) and all the fruit and makes the numbers.Hmm. Ah you coming up again? Might have to get a few of us together and have 'one or two' beers *cough* haha

^^ Stock cams. I have been thinking about this a little over the lst few weeks. Are the cams alot of us guys put in too large? Everyone has their own views on this but alot of people are getting awsome results with cams on the smaller scale!

Yeah no worries. You pay for it and ill run it!

I was thinking about the midori fronts.... but if your going to have a 4 inch exhaust you might be better off with a set from racepace (IE Tangomatt's car, page 3) Ash. Do you know if they would make up a set and sell them by themselves. From what Steve has told me they do business a little different to most places. I couldnt even find a phone number!

It's disgusting that a series 3 R33 GTR is worth such a pitiful amount of money. Good luck with the sale..... It should be worth more!

Thats awsome. Lets see what it makes on E85! A few little questions while im thinking of them. Are you still using the factory CAS or did HKS use some sort of crank trigger unit? I am getting CAS noise above 6000 RPM or so. Are you still using the factory airbox? I can't remember. As for the block.... I already have one in my car.... It would be greedy to have 2 haha.

^^^^Take one anyway..... if you dont.... use one of mine

Who is that? My tuner (Yavuz) or myself in regards to the popo's? haha

Nah ah. GTR's are twins. Period. Its all about looking "stock" *ah hem*.... for when the super doods in their crazy SS's pull you over and say 'pop your bonnet son" . You sound like my tuner.... He calls twins "Thomas the tank engines" becasue they choof! Its all about no no no to singles and yes yes yes to twins haha

The thing with the V cam (as much as I would LOVE to have it on my car....as would all of us) is with the big one for turbo's like T04Z's, GT RS's is that you need valve relief pistons. I dont have that and I am not pulling down a engine to fit them! Its interesting that the -5's hold boost longer then the 2530's. Your car made 440rwkw off the top of my head? That enough to scare most people

Steve and I have spoken about your car a few times. Your result is spot on. Whats even more surprising is they used -5's and not 2530's or something else off the shelf "jap". Who's call was that? Was HKS impressed with the result the 5's gave? My fronts im 99% are twin 70's into a 85. Apart from the Midori front pipes they are the biggest ones I have found. Don't Racepace sell some crazy front pipes?Tangomatt had some on his car im sure of it. I wonder what they would want for a set of them? I'll be getting a price for these Midori dumps over the next few days. I aint paying almost $900 for them.

Haha. Yeah thats fine. There will be a little bit of testing going on with my car this year. Different cams (260's and 270's back to back) and now it looks like big fook off dumps with a set of -5's bolted to them! Ash, Straight off good ol Nengun. About $850 off delivered. I might see what a mate of mine can get them for... Usually 20-25% off RRP Greenline dont have them. I dont think I have ever seen a car with these dumps on them. Maybe because alot of companies dont make a front pipe big enough (a proper 3 inch internally diameter). My HKS ones are 70 mm so there will be a lip now. ATM when you take the front pipes off the car the size difference between the rear of the dump to the start of the front pipe is huge. The dumps are that much smaller it isnt funny..... Now if i buy these Midori ones it is going to be the other way round. Dammit!

After having a look around at dumps the Midori Seibi items look like a goer. Internal Diameter of 76.3 mm which is 3 inches. Bigger then the new Tomei items which are 68, the Mines which are 70 (split type) and I would assume the Nismo's. From what I can gather the Series one Tomei's were 2 and 3/4 inch internal diameter.

A mate of mine who is also on here mentioned the other day that his car also has HKS dumps. Now he has built a few cars in his time and is experiencing something similar to what I am... doughy off boost and doesnt make what it should when it is it on song. Seems very funny.

Ill go from the start Nismo AFM's ARC Duel entry 105 mm cooler Nismo plenum Ported factory manifolds GT RS's HKS split dumps HKS Front pipes (twin 70 mm into 85 mm) 3.5 'cat' Kakimoto Full mega N1 catback.

I was having a think today. My last tune on pump 98 was 370 rwkw. The previous owner of my car (Mik) also made 370 rwkw on bels dyno. Now my new tune on E85 is 402 rwkw @ 25 psi. Ok sure I made a big more grunt BUT I would dare say that power was made up by the extra timing thrown at it. So there is an obvious restriction somewhere.

BB, Cheers mate. When the car was on the dyno getting tuned in Nov Yavuz did say that there was a restriction somewhere in the exhuast. I never thought it would have been the dumps. Guess who will be buying a set of tomei dumps now. I wish I knew this when I had the turbo's off less than 3 weeks ago to rip off those rubbish Tomei manifolds! Looks like the huffers will be coming off again! I would say that going back to a set of -5's I will come pretty damn close to the power im making now..... if not more with a whole lot more response. Having your cake and eat it aswell?

Gav, were your -5's straight out of the box or were the tinkered with?

Waste of time.... Just dont drive it hard to your final destination... Rip it out and throw it where the stupid thing belongs... in the dumpster!