Quote:
Originally Posted by normalsalaryman
thx for the advice pwpanas.
most of the 2jzgte or 1jzgte engine that is sold in my country at least 90% of them were always paired to a 5spd w58 gearbox and i dont know why.
the car is still in body rigids steps so basicaly reinforced everything that need to be reinforced while im traveling to CAL at the moment hunting for parts, just bought the sets of hks coilover so far, so any idea what i should get next for the engine? so i cant provided any pic of the engine parts backhome.
and all the upgrades i have listed above upgraded ECU,bigger pipping and intercoler was just an anticipated mods,who knows i would like to go MORE.
well the guy who was told me to get those upgraded has the fastest turbo evo in my country and to be honest there were none smarter turbo guy than him in my country and its suck to have such a small choice of mechanic that you can choose from..
so you were saying fastest way to increase the engine power is not to let the boost off right? because i was thinking of not running any BOV at all,beside i love those zututu flutter sound,
my question is will it safe to run no BOV on this engine? and the blocking oem wastegate would be the same with running with no BOV? and what is the maximum boost number that oem TT can produce?
the info that i manage to collect from trolling pretty much of the 2jz forum, many of them were saying on w58 tranny you can hold max between 500-700hp..can you back me up with that info if you have time?
and do you think i need to get new fuel pump?since my stock fuelpump was for N/A engine,if yes what sort of fuel pump i should get?
thx
matt
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Hi Matt,
As I wrote in my previous post, you need to do some reading about BPU. That way you'll know where to start with the modifications. For example, instead of an exhaust, ecu, intercooler, and coilovers you should be buying a downpipe, a GReddy BCC or HKS FCD, and a boost gauge. This is an example of what you can learn from reading about BPU (and a whole lot more can be learned as well).
You need to buy the parts for the mods you know you need to achieve your goals. So far you have not told me any goals that would benefit from the parts you purchased. Why spend good money on parts that might end up being completely useless in achieving your specific goals?
Again, please stop listening to the guy with the evo. As you know, an evo does not run the 2jz-gte. If he told you to buy an upgraded (more than oem 2jz-gte) exhaust, an upgraded (more than 2jz-gte) intercooler, or an upgraded (more than oem 2jz-gte) ecu, he has no idea what he's talking about...since your power goal is only 500rwhp. With an EVO I'd guess he really does need to buy those upgraded parts to get 500rwhp, but you do not need to buy those things to get 500rwhp out of a 2jz-gte! That's one of the things that makes a 2jz-gte so great. If he told you to buy those things for a 2jz-gte, in my books
he's not at all useful for your project...so therefore you must stop listening to him. Now you have us here on this forum to listen to, so you don't need to listen to him any more!
No, you have to increase boost produced by the turbos. This has nothing to do with the BOV. The BOV protects your turbos from being damaged in certain conditions, and has nothing to do with making MORE power. Again, you must continue to run the BOV to keep the turbo from being damaged. I have more to teach you about the oem 2jz-gte BOV when you're ready.
You should not block the oem wastegate or you will certainly overboost. Blocking off the wastegate would lead to unlimited boost levels (30+psi with the oem twins). Unless you're running pure $30/gallon 120+ octane race fuel, you cannot run unlimited boost from the oem twins...and even then the oem twins wouldn't last very long at all.
Again, the oem twins can put out 30psi - BUT at that level they are VERY inefficient (blowing very non-dense hot air). They also will die very quickly if you ask them to work that hard.
Larger turbo(s) boosting that same 30psi would make MUCH more power because it's more efficient at that boost level...the bigger turbo(s) would be 'blowing' (i.e. compressing) much cooler air, which is more dense. Denser air means more oxygen. More oxygen plus more fuel means more power.
Unfortunately, I have to tell you that I really no interest at all in the W58 tranny. If you want my general advice on it, I'd ask you to dump it and get a proper V160.
Again, other forum members may be able to help you with your W58.
Everything you run should be from the 2jz-gte Mkiv Supra, including the fuel pump. If you had said that you wanted to go over 550rwhp, you would need to run two oem Mkiv Supra fuel pumps, together with a complete fuel system upgrade. Since your power goal is not that high,
one oem 2jz-gte fuel pump (preferably from an Mkiv Supra Turbo) will be fine.
Kind regards,
Phil
P.S. "CAL" = California?