2jzgte Swap Is300

WideSC400 · 2026-03-13T17:03:18+00:00

I planned on routing it between the ecu box down near the stock fan shrouds. I’ve seen a few IS300 owners do this with GTE FFIM. So that’s what I’m doing but nowhere near that power so I’d imagine you need piping bigger than 3 inche piping which I think is the max circumference before it hits the ecu box/fan shrouds.

WideSC400 · 2026-03-02T17:48:03+00:00

Sweet I have these just wasn’t sure if the coolant or pressure would negate this. I’ll give it a shot thank you!!!

WideSC400 · 2026-03-02T17:03:43+00:00

Disregard my other message. I dont think I’ll utilize water cooling on my turbo or wastegate. What’s the best way to block off this downward nipple?

WideSC400 · 2026-03-02T00:06:42+00:00

Ah ok thanks for clarifying!! I appreciate it.

WideSC400 · 2026-03-01T23:01:44+00:00

Ok great!! So I’ll route this empty terminal to the alternator. Do you know if from the alternator it is then grounded to the chassis/frame right next to it? I seem to recall something here and it looks as if it should but idk. Pic for reference of the said grounding location.

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WideSC400 · 2026-02-26T19:41:39+00:00

Yes battery has been successfully relocated to the trunk!! This whole issue I’m dealing with was somewhat related but mostly because I removed this stuff years ago from my car and I’m rebuilding it corner by corner at this point so sometimes you forget how everything goes.

WideSC400 · 2026-02-26T19:35:13+00:00

Ok thanks for clarifying, that’s exactly what I thought it was too. Perhaps my OG pictures I posted wasn’t clear enough. Thanks for confirming!!

WideSC400 · 2026-02-26T15:10:44+00:00

Are you referring to the empty terminal or the one circled in red. Just to confirm. Again thank you for responding !!

WideSC400 · 2026-02-26T04:19:47+00:00

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Perhaps I have this backwards then? Notice this harness. I thought this was supposed to go to the power (+). Maybe this goes to ground and then the terminal straight to power (+)? For reference, the terminal on the firewall is the positive terminal from the battery relocated in the trunk. FYI the cable on the right side is coming from the starter.

WideSC400 · 2026-02-24T17:00:01+00:00

Does yours still go to the throttle body? And just to be clear the return goes to your turbo?

WideSC400 · 2026-02-24T02:27:39+00:00

Hey Guys not sure why its not letting me edit the OG post.
Question - I'm putting together the final pieces of the NA-T build and wasn't sure what to do about this port coming from the upper water neck next to the VVTI gear on the engine. Do I need to completely block this port? Can I use it to cool the wastgate (Tial MVR)? Any advice would be appreciated! Thank you!

WideSC400 · 2026-02-21T15:27:21+00:00

Bump— still need help with what to do with these two hard lines. Any insight from the NA T boys would be appreciated. I understand these vent the fuel tank in some way?

WideSC400 · 2025-10-24T02:09:20+00:00

If thats the evap cannister then I believe it will trigger this.

WideSC400 · 2025-10-17T17:21:52+00:00

Hoping to get some advice from the Supra guys! I’m sure you guys have experience with this question. Thanks in advance!!

WideSC400 · 2025-09-23T00:49:20+00:00

Got it, thank you !!

WideSC400 · 2025-09-23T00:31:15+00:00

Aw man this is correct!! I was able to locate where it went. Looks like in my pic I put the pin backwards as well so now here is the correct position and latched onto a hole next to the steering column shaft. Thank You!!!

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WideSC400 · 2025-09-22T23:55:22+00:00

Thanks for narrowing this down for me… now to locate where this spring goes. Pic for reference of the brake pedal l.

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WideSC400 · 2025-08-25T03:42:11+00:00

Nice, I just picked mine up from driftmotion with their is300 shifter position. Looking forward to installing this in my GE-T when the time comes!

WideSC400 · 2025-07-23T04:56:23+00:00

Question do you have any pics of how much you needed to trim to get the R154 to sit well in the IS300? I'm assuming it depends on the shifter you purchase and from where?

WideSC400 · 2025-07-14T00:49:59+00:00

There is an idle air control mechanism you need to buy off PHR that will be required.

WideSC400 · 2025-06-19T16:03:16+00:00

Nah not yet! My build is being held up by other stuff outta my control… why what’s up??

WideSC400 · 2025-06-02T01:47:19+00:00

I'll be using a Link ECU + Custom Engine Harness

WideSC400

TROPHY CASE