I'm thinking about boosting my IS300..or maybe selling mine and getting an already boosted IS and i've got some questions....

first, I have an '01 IS...so it is a sport shift. that's why i'm thinking it would be easier just to sell my IS and get an '02+ manual

so is the 2JZ-GE (IS300) the same block as a 2JZ-GTE (TT)?

If so, what's the difference (stronger rods? lower compression pistons in the GTE?)

if they are the same block why would anyone do a TT supra swap into an IS like this guy b/c he says the engine mounts don't match:
http://www.is300gte.net/index.php?pg=about.

so, to make a TT IS300, does the basic forumula go like this...
'02+ MT IS300
swap pistons/rods in the block
install TT head w/ intake mani and exh mani
turbo
FMIC/piping/BOV
injectors
AEM
TT fuel pump
Getrag 6 speed
clutch???

could I reuse the IS300 throttle body and intake mani on the TT head?

 

physically the short blocks are the same, internals are different, deck height is higher on the ge motor. BUt ge has been proven to make 700rwhp on the stocker as long as you get that compression down some. It is to be said that the vvti head breathes better that the tt head. so i would just keep the head. Get a greddy 2mm gasket and you should be straight unless you want lots of power in which your tranny would die anyway.

And to answer the question with the ge and gte heads. the have different bolt patterns and the ports are somewhat spaced differently, so no you cannot use you intake and tb. hope this answers your questions. if anymore shoot them over

 

WHAT? on completely STOCK internals - ask boostlogic, they have built a lot of turbo IS's and they claim UNDER 500 is a good idea for reliabilty... no conflict intended, but SRO above me shows the biggest number.. .700 whp is SAFE for a gte, ive seen them pop at 550, 600 and so on. The GE may be capable, just like the GTE is capable of 980 whp stock internals, but that doesnt mean it will last worth a shit! From what i know however, the shortblock should swap out just fine, and the compression is already nice and low, and HAS the oil squirters (GTE) The GE block has the same rods and crank, but the pistons are different. Now, for another "thing" the auto tranny, will quickly die on you, but the W55 as i believe it is in the IS is also a hunk of shit, so putting a V160 6 speed out of a tt supra would be your best bet. This however can get damn expensive, and if you like the lexus marque, but cant afford all that, then i would get an SC300 If you do have a little money to throw around, i would do it, because the IS is a bad ass car, looks awesome, great interior, the only downfall is the wheels. You cant seem to fit a whole lot of tire, and if you make as much power as i am making on stock twins, then you are "fucked" because i spin well into 3rd and thats on 315/25/19's on 11 inch wide wheels. Get some good autocross tires or some DR's and you should be good check out www.boostlogic.com, or call Ryan Woon at www.wotm.com, his # is on there. Awesome guy, will not quit helping you out, and has tons of experience with big money supras, like na-t shit, the expensive full swaps, with brakes and all. He will know what you need down to the nut and bolt. He also built and drives the quickest 6 speed supra in the world, so i cant imagine he doesnt know what he is talking about... good luck, i say go for it, IS-t's are bad as hell, hopefully this has been some help

Mark

 

uhhh when did i say safe anywhere in this? reading comprehension... i said it "can" make 700rwhp, no where does i say safe or did i say reliable. and i also stated about the tranny being weak. Assuming he was gonna get the 02 model. If you go on club lexus 700rwhp have been made on a older ge on stock internals.

 

thanks guys.

i'm thinking trading for 02+ manual.
keep the GE block, upgrade the internals, upgrade the tranny, supporting mods, AEM, bolt on a big turbo.
if i do it, i might would just go all the way and get a proper front mount and intake mani that doesn't require piping over the turbo like ISman's on .net.

 

Who gives a shit if it CAN make 1000 rwhp - its pointless if it isnt going to be reliable under power.. i dont thing this question was to see how fast they can blow the IS up do you? My reading comprehension is fine, im pretty sure there wouldnt be a problem if you didnt state redundant info... but nevertheless, now youll talk some shit about how i know nothing etc.. have at it, happens to people all the time - (proceed with the keyboard hardass) either way, lets leave the "it CAN make 10,000 hp on stock internals" to companies with money to blow and research to do, sound good? I would never guinea pig my car unless i had a lot of money to blow, or a small amount of grey cells. Im sure i feel the same way about my supra he does about his IS, make power, drive it - i dont want to fix the fucking thing, so ill stay below 800 rwhp most of the time to prevent self destruction of the bottom end - EVEN though Mike carlin made 980, and ryan woon made 900 something and Peter Blach - just because they made it DOESNT MEAN SHIT....

Back to topic however

Tampa TSi, you may be cheaper putting a NEW GTE block in your car, because block assembly and parts could put a GE over 2k, and you can find places to sell you a new gte block for about that much... Besides, the strength wouldnt be much different... Also, if you cant assemble the bottom end of a motor yourself, it may be of interest to just swap blocks, as the GTE is stronger AND has the piston oil squirters as well as numerically lower static block compression, so you wouldnt have to worry about head gaskets etc... either way, check out www.supraforums.com, there are a shitload of turbo lexus people on here, and maybe they can lead you somewhere with some more lexus info, as even though it is a similar motor, there are some things that dont correlate....

hopeully you can find some useful info

Mark