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Hi folks 
First off sorry for what is likely to be a pretty wordy thread, but i figure i'm best just throwing down everything in one go and sort whats left over when the time comes.
Ok i've decided over the course of the last few weeks what i want to do with the car. I've only had it for around 5 or 6 months, and the plan was originally to keep it for a year then promotion permitting jump over to an R34.
Trouble is, i've got the promotion but i've grown to like it too much so i'm keeping her for a while and investing in some more shove and get a 4x4 for the longer more boring daily drive stuff and lugging bikes and snowboards around.
I've thought about a few options, including going down the RB30 route, but i figure i've got a good low milage engine in there already, so i might as well work with that for now.
I'm looking for the world on a stick really, around 600 -650bhp at the wheels, but i'm aiming to keep a fast spooling low lag setup that is still perfectly useable on the road, and above all, reliable, whilst being responsive and powerful enough to show up some more precious metal should it see a track.
So over the course of the next few months i'm gathering bits for a build.
Any help with potential specs would be appreciated.
To start with i'm getting a twin plate OSG clutch, as mine doesn't have much life left in, and is barely up to the job of 450bhp. The gearbox is a concern but i'll ask about that once i've got the engine side of things decided upon.
Engine wise i was just planning on going down the 1mm oversized forged pistons and rods, and metal headgasket route originally to keep things safe, but i've been toying with the idea of a stroker kit and have begun to wonder if it's worth stroking the engine when going for 600bhp. I'd like as much torque as possible, and to my mind stroking the engine would help, but do the likes of the 2.7 and 2.8 kits have any detrimental effects on everyday useability of the car? particularly when driving around town etc , and is it worth bothering with for the level of tune i'm looking at?
Also curious as to how the stroker kit equipped engines turbos spool compared to non stroked. any thoughts?
The turbo kit is what i've struggled to decide with, but i'm fairly keen on the idea of the HKS GT RS' kit, retaining the two turbos. I know there's arguements for and against going single turbo, but for now i think i'm best off sticking with 2. What power is the RS kit good for? i've read mixed reviews of them on here, on skylinesdownunder and skylinesaustraila etc all with different opinions of what power is achievable,
The turbo's they seem to be compared with the most is the Garrett GT25/40's, but i'm not sure they're up to the job of my power requirements.
Is there anything out there that i might have overlooked turbo wise that should be considered for my power aims? i'm not tuning just for the sake of reaching a set target power wise, 600atw is purely a ballpark figure give or take, But i am pretty sure i'd like to retain the twin turbos if it's feasibly possible. If this is a stupid idea please feel free to tell me and justify why
I'll be sticking a set of fairly mild cams in there to help the spool and power delivery without shifting the power up to the top of the rev range too much, probably a set of Tomei 260's, and a set of uprated springs. haven't really looked into everything with that respect yet but i'll be discussing it with my tuner soon, any thought or recommendations there appreciated
Managment wise i've got a powerFC ready to install, but i may well go for a motec setup later, anyone used these on the GTR's and if so any comments ?
Safety wise i'll be going for a larger and baffled sump and probably an accusump, with a relocated oil filter kit and a good sized oil cooler as i've noticed oil temps are pretty easy to send to a higher level than i'd like them to be at with 450bhp.
Fuelling i haven't really looked at so any advice there is appreciated. I was thinking 720 injectors should be up to the job coupled with a rise in fuel pressure and an aftermarket fuel rail. Pump wise i've got a walbro in there at the minute which i'm hoping will be upto the job but if not i'll incorperate a booster pump setup.
The drivetrain i've got to have a look around, i'm pretty sure it'll lunch the box that's in there in a whim with that power, but i'm not looking for dog boxes or sequential if i can avoid it. I'm interested in tinkering with the gearing and final drive of the car but i've not looked into that in any real depth just yet, but i'll be uprating the diffs for sure, just not sure what with yet
So, if you've read through this far thanks, any thoughts as to what i'm looking at doing? Tuning skylines is pretty new to me, but coming from a background of other nissans it doesn't appear to be too different but if i've overlooked something critical or the setup i'm thinking of sounds crap let me know what you think and why
Thanks for reading,
Stu :squintdan
First off sorry for what is likely to be a pretty wordy thread, but i figure i'm best just throwing down everything in one go and sort whats left over when the time comes. Ok i've decided over the course of the last few weeks what i want to do with the car. I've only had it for around 5 or 6 months, and the plan was originally to keep it for a year then promotion permitting jump over to an R34.
Trouble is, i've got the promotion but i've grown to like it too much so i'm keeping her for a while and investing in some more shove and get a 4x4 for the longer more boring daily drive stuff and lugging bikes and snowboards around.
I've thought about a few options, including going down the RB30 route, but i figure i've got a good low milage engine in there already, so i might as well work with that for now.
I'm looking for the world on a stick really, around 600 -650bhp at the wheels, but i'm aiming to keep a fast spooling low lag setup that is still perfectly useable on the road, and above all, reliable, whilst being responsive and powerful enough to show up some more precious metal should it see a track.
So over the course of the next few months i'm gathering bits for a build.
Any help with potential specs would be appreciated.
To start with i'm getting a twin plate OSG clutch, as mine doesn't have much life left in, and is barely up to the job of 450bhp. The gearbox is a concern but i'll ask about that once i've got the engine side of things decided upon.
Engine wise i was just planning on going down the 1mm oversized forged pistons and rods, and metal headgasket route originally to keep things safe, but i've been toying with the idea of a stroker kit and have begun to wonder if it's worth stroking the engine when going for 600bhp. I'd like as much torque as possible, and to my mind stroking the engine would help, but do the likes of the 2.7 and 2.8 kits have any detrimental effects on everyday useability of the car? particularly when driving around town etc , and is it worth bothering with for the level of tune i'm looking at?
Also curious as to how the stroker kit equipped engines turbos spool compared to non stroked. any thoughts?
The turbo kit is what i've struggled to decide with, but i'm fairly keen on the idea of the HKS GT RS' kit, retaining the two turbos. I know there's arguements for and against going single turbo, but for now i think i'm best off sticking with 2. What power is the RS kit good for? i've read mixed reviews of them on here, on skylinesdownunder and skylinesaustraila etc all with different opinions of what power is achievable,
The turbo's they seem to be compared with the most is the Garrett GT25/40's, but i'm not sure they're up to the job of my power requirements.
Is there anything out there that i might have overlooked turbo wise that should be considered for my power aims? i'm not tuning just for the sake of reaching a set target power wise, 600atw is purely a ballpark figure give or take, But i am pretty sure i'd like to retain the twin turbos if it's feasibly possible. If this is a stupid idea please feel free to tell me and justify why
I'll be sticking a set of fairly mild cams in there to help the spool and power delivery without shifting the power up to the top of the rev range too much, probably a set of Tomei 260's, and a set of uprated springs. haven't really looked into everything with that respect yet but i'll be discussing it with my tuner soon, any thought or recommendations there appreciated
Managment wise i've got a powerFC ready to install, but i may well go for a motec setup later, anyone used these on the GTR's and if so any comments ?
Safety wise i'll be going for a larger and baffled sump and probably an accusump, with a relocated oil filter kit and a good sized oil cooler as i've noticed oil temps are pretty easy to send to a higher level than i'd like them to be at with 450bhp.
Fuelling i haven't really looked at so any advice there is appreciated. I was thinking 720 injectors should be up to the job coupled with a rise in fuel pressure and an aftermarket fuel rail. Pump wise i've got a walbro in there at the minute which i'm hoping will be upto the job but if not i'll incorperate a booster pump setup.
The drivetrain i've got to have a look around, i'm pretty sure it'll lunch the box that's in there in a whim with that power, but i'm not looking for dog boxes or sequential if i can avoid it. I'm interested in tinkering with the gearing and final drive of the car but i've not looked into that in any real depth just yet, but i'll be uprating the diffs for sure, just not sure what with yet
So, if you've read through this far thanks, any thoughts as to what i'm looking at doing? Tuning skylines is pretty new to me, but coming from a background of other nissans it doesn't appear to be too different
but if i've overlooked something critical or the setup i'm thinking of sounds crap let me know what you think and why Thanks for reading,
Stu :squintdan
