Toymods Car Club Inc: Tech & Conversions => Building an IS430

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ozaristov300
Occasional Poster

Location:
Melbourne
Registered:
January 2005

Re: Building an IS430	Sun, 23 January 2005 01:43

Status Update 23/1/05 Thank you again for sharing your awesome collective knowledge. I'm blown away by how much you guys know, your willingness to share it and this club/forum for providing the vehicle (excuse the pun) to do so. Engine: The 3UZ-FE is still the preferred choice, although I have been wished considerable good luck by many of the importers. Not sure they were sincere though... The VVTi 1UZ-FE may also be a viable option (and potentially a litle easier to integrate electronics - eg Key ECU on 3UZ), although the earlier 1UZ would probably not pass engineering due to the "engine must be the same or later year than car" rule. Gearbox: W58 is the go. I purchased one on Friday, along with a conversion bell housing, 8kg flywheel and slave cylinder for $700. Bargain! The bell housing needs machining to complete (facing, mount holes etc) so if you know of a good engineer in Victoria with a 4 jaw lathe, let me know. The gentleman also provided the part numbers for the pressure plate (Borg and Beck) and driven plate (standard 9.5" Supra). Rear end: Still wondering. I am trying to determine if the IS300 rear end is any stronger than the IS200. If so, a rear cut from an IS300 might be the go, transplanting the complete sub-frame. Brakes: According to Norbie, the JZA80 Supra front and rear callipers are "almost" a straight bolt-on option. This sounds attractive as the calipers are readily available, although I still need to research the spec difference between the IS200 and Supra rotors, calipers and pad area to ensure I'm getting sufficient gains. The link from Nark to MTRALLY on brakes will fry your brain. I've learnt more about brakes from reading this one post than the last 25 years of motorsport has taught first hand. Based on reading the entire 6 page post, my current thinking is to team DBA4000 rotors and Ferodo DS2500 pads with the JZA80 calipers. (Norbie: Can you help me with a definition of "almost"! PS Love your website. You really have this sickness bad.) New Question: The Rod Mullen and TTE IS430 conversions were both left hand drive IS200s. What new and surprising challenges await conversion in a RHD IS200? Electronics (groan): Firstly, let me say that between deesonet, KOFFEE-BLACK, Norbie, Nark, gianttomato, my 2 mates Steve & John who work at Toyota, my mate Frank who is managing the install, Jim from Sideshow, Ray Hall and those yet to surface, I have no doubt we will succeed. From your collective experiences AND access to the right documentation (which we have available), every issue can be resolved. What we know; 1. Try to use the standard ECU when using engines with VVTi. The aftermarket ECUs don't do VVTi OR they do it badly. 2. ABS can usually be fixed. Traction and ABS rely on a common input so chances are if we fix ABS, Traction just needs to be fed the same ABS input signal to operate (thanks deesonet). 3. There is much yet to know... Thanks Wayne [Report message to a moderator]

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