MY 01 GS300 Going Manual Now! - Club Lexus Forums


MY 01 GS300 Going Manual Now!

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Old 02-15-08, 07:18 AM   #1
adamgamz
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Default MY 01 GS300 Going Manual Now!

My GS300 is getting the next round of mods, I installed the GTE bottom end in my garage along with the intercooler, meth, PTE74mm turbo, Supra headgasket, valve body and some 440cc injectors with a Walbro and a fuel pressure regulator. The 440's were pretty much all the stock GS300 ECU can handle with the MAP ECU, although it was fun it was certainly not enough. I picked up a Haltech from Kean and was referred to Rick @ Speedtech for the install by ZGAD. Initally I was just planning on doing the Haltech but that turned into removing the cams and machining / installing GTE Cams, reworking the head, and going with the R154 to handle the extra power. I thought about going built auto but those stock built auto's break all the time plus for about the same money I could go R154, down the road I can easily upgrade to V160 too. I'm pleased to post up these photos, it was a real bear of a job getting the pedal in / clutch master installed / pedal box installed but Rick pulled it off, Ricks a full time NASA engineer and after seeing some of his custom work at his part time shop I knew this was the guy to pull of one of the only manual GS300's in the country. We have a bit more to go, make a custom intake manifold, make the IC pipes, install the 1000cc injectors and twin Walbro's, tuning, along with customize / extend the shifter position to fit the GS but this should be wrapped up this month!








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Old 02-15-08, 07:24 AM   #2
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Nice, I think I saw you posting something about a tranny swap over on My.IS. If you get it all completed could you possibly provide some info on all the parts needed? Also what kinda fabrication did you have to do to get that clutch pedal in there? I'm going to boost my car to around the 800-1000hp level eventually so I will need to throw in the 6 speed manual V160 at those power levels.
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Old 02-15-08, 07:27 AM   #3
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yeah one word!!!!

NICE!
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Old 02-15-08, 07:29 AM   #4
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The same parts list found on the IS300.net. I used all 01 IS300 cutch parts, the hard part was trimming, welding, and making the IS300 Pedal box / pedal bracket to fit. I didn't do it but Rick @ Speedtech in Merrit Island FL pulled it off for me after messing with it for days under the dash. It was a real PITA to make fit. This is by far the hardest part of converting to manual. Also from what I read online, up until this point it seemed to me everyone in the know about this job said you had to use a remote clutch master cylinder as the firewall is contoured, the only manual GS300's out there had a remote master from what I've seen. This goes to show you you can use all Lexus parts to make this look like factory!

A few more pics of the outside, a bit blurry






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Old 02-15-08, 07:42 AM   #5
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truly awesome! Well done...... keep us updated please!
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Old 02-15-08, 08:07 AM   #6
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wow adam looking good, i always follow your thread here and on sf.. looks like you should have another trans for sale again with the valve body upgrade lol
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Old 02-15-08, 09:48 AM   #7
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That sounds awesome adam. Can't wait to see it all finished.
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Old 02-15-08, 10:59 AM   #8
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Thanks guys, I really wanted to see what I can do with the stock 2JZGE motor too. really no point in wiring, replace the harness, block, crank, head, etc... just swap the pistons / rods and go. I probably saved a good 3K going that route over the GTE with that labor an all.
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Old 02-15-08, 12:05 PM   #9
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I can't wait to see this! Sometimes I sit in my car and wonder what a 6 speed would look/feel like.
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Old 02-15-08, 05:04 PM   #10
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NICE MODS>>NOW LOWER IT!!! lol
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Old 02-15-08, 05:11 PM   #11
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this will be awesome once completed. anything is possible with ingenuity.
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Old 02-15-08, 05:14 PM   #12
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what the HELL is that pedal on the left ???




haha nice one...definitely a rare GS
is that an HID retrofit i see?

Last edited by Kaydee; 02-15-08 at 05:33 PM.
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Old 02-15-08, 05:31 PM   #13
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Good to see your still going at it Adam. Very nice!!!
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Old 02-15-08, 06:28 PM   #14
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You should get clear side marker lights. The orange throws everything off.
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Old 02-15-08, 06:32 PM   #15
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Great work. Lose the kit though...
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