Join Date: Jun 2011
Location: Denton, TX
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I have had my IS for a little over a year now and I have been itching for boost since I started looking for one. I've been reading a lot but I know I need to do much much more research on going f/i. The biggest thing I can make out of all of these threads is that this is going to take $$$$$$$$.
I am still in the learning process, but I just wanted some feedback as to what path I'm currently considering for the future. (I figured I should start researching more now so that when I come into the money I'll have a better idea of what to do with it.
I have a 03 e-shift with 133k miles and probably won't be starting this project till much further down the road so the mileage will be higher. I am planning on piecing together a kit on my own to reach a goal of around 300whp until I get comfortable w/ the power and get a better understanding of boost.
My rough plans are:
Transmission: Upgraded valve body, sprag gears, and cooling (Upgraded torque converter?).
Compression & leakdown testing to get an idea of what shape my current engine is in
GTE pistons, rods & head gasket
I need to do a ton more research on turbos, ems & tuning. I bought a couple of books, "How to Tune and Modify Engine Management Systems" as well as "Maximum Boost" although I have yet to read them all the way through.
Once I get used to the setup and comfortable with working with boost. I will most likely go for around 400whp maybe 500. At this point I will consider a 6spd.
ANY feedback would be extremely appreciated. Am I going about this all wrong?
Sorry for the long thread I tried to include everything I could think of atm.
I know I need to do more research I just want a push in the right direction.
Hey there 2jzTaters96 - First off, you're spot on: research, read, and more research! I've been doing that myself for about the last two years and have found tons of great information. I am not boosted myself, but I'm getting very close to finally having gathered all of the parts - that said, I've done loads of research into what exactly I'd need to make goals meet.
I'll start at the most important part - that compression test and leakdown test. It seems you're aware that this could make or break your plans for boost, as if your motor isn't healthy, that could drastically change which of your plans you need to do first.
GTE internals + GTE HG is a good and cost effective plan
I haven't aimed towards researching our autos, but from what I've read, a valvebody upgrade and the cooler is plenty for 300whp. I know of a guy locally who's pushing around 450whp with just that, and he's had no problems as of yet.
Just an fyi - the V160/V161 swap averages around 7-10k. $5000 or so for the transmission alone, plus a rear end swap and all the small things. I'm manual as is, but I'm going the Marlin Crower rebuilt R154 route since it's much more cost friendly and will do great for my power goals.
Choose carefully for your engine management. Specifically, do you have a tuner in the area that you plan to use? And if so, what are they most comfortable on? Research heavily into Standalone's vs. Piggybacks. You'll see plenty of negative reviews and horror stories on piggybacks on our cars, but you'll also see lot success stories.
That all said, good luck to you on your conquest of boost!
Thanks a ton for all of the good info, this is exactly what I was looking for. The compression & leakdown tests will most definitely determine wether I'm boosting this engine or not. It seems to run pretty good, but I have no prior knowledge or experience to make that diagnosis. If things don't turn out well then I may just save up a mountain of $ for either a GTE swap or a very low mileage, already boosted GE swap (If such thing exists).
As for a tuner, I live in mid Missouri, so I have yet to hear of a reputable shop that even knows how to work on 2jz's, which could bring up some issues. However I have plenty of research to do in pretty much every department of going boosted.
I suppose the best place to start would be writing out my initial goals, taking down some notes off of this site, as well as the books?
Thanks again for the reply this gave me a lot of guidance & motivation. Good luck with your project as well! +rep for the great information!
Also keep in mind that your compression and leakdown test will tell you the condition of your current engine's internals and HG right now, as compared to your new set up with GTE internals, new rings, and new HG. I forgot to mention that you'll definitely want ARP headstuds for later down the road when you exceed 10lbs +/-
I would imagine there are very few boosted ge's for sale out there, since many just go for the GTE swap. Many folks prefer this because of the Front Facing Intake Manifold (FFIM), as compared to the GE which goes over the top. And of course because the internals were already designed for boost, you don't *have* to pull the motor apart.
Hehe you definitely want to find that tuner, as they can easily be the make or break on a setup. Bad tune can = blown engine, very quickly.
Absolutely - Write out your goals. And more importantly, research into why those are you goals, and what it'll take to reach them. You'll find that often times your goals will change, whether it be for name brand parts, bigger injectors, or whichever. This site can definitely be your main source of information, just remember to not take any one person's write up/review as law. For anything you're not conceptually sure about, books and google are awesome.
Talk to the CEO of SRT, hes a big help on questions you may have. Best company (imo) is SRT for easy 300-350hp is300. email is right here for you -->[email protected]
Hey guy's im going to buy Brian crower stage 2 cams along with BC cam gears for my internally stock lexus is300. It does have A full exaust & k&n intake. Do you guys know any information on the power I should be gaining or wether or not it's worth the upgrade. total cost of project will be around 1400$ Any ideas or opinions would greatly help thank u
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