Building an IS350 6MT
06-16-16, 05:40 PM
#241
Originally Posted by Jeff Lange
It would really depend on what skills you have as to how difficult the swap is. Mechanically it is relatively bolt-in, electronically it still wasn't a lot of actual physical work, but a lot of testing and checking. Even of the people who have done this swap in Japan (using SARD's kit) or Australia, I don't think any of them ever got cruise control working for example.
Jeff
Jeff
What new parts is required for a successful swap? Are you running a stock is350 ecu or a piggyback system?
Last edited by Jeff Lange; 06-18-16 at 08:41 AM. Reason: Formatting.
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Pingar (04-09-21)
06-18-16, 08:34 AM
#242
I used a reprogrammed new factory ECU.
Jeff
Last edited by Jeff Lange; 06-18-16 at 08:40 AM.
06-19-16, 07:51 PM
#243
Lexus Test Driver
I don't know exactly as I did a few other things at the same time (windshield, brakes, etc.) and it's going to depend how much you can get the engine and wiring harnesses for. You're going to need a stronger clutch as well as all of the fuel lines and modules. Of course labour if you don't do it yourself, it can add up. Like I said though, it's really going to depend on what the various parts cost to get.
I used a reprogrammed new factory ECU.
Jeff
I used a reprogrammed new factory ECU.
Jeff
06-24-16, 05:25 PM
#244
Did the first oil change on the new engine this week and finally got the new tires on the car, they're Bridgestone Potenza RE-71R in 245/40R17 front and 245/45R17 rear. I would have preferred to keep the square tire setup, but the differences between the IS250 and IS350 VDIM parameters just weren't working for me. Thankfully it doesn't look too bad and the driveability is definitely much improved. Traction control does seem to come on a bit quicker than the IS250 (even when taking into account the higher power) but it seems to be a bit less intrusive than the IS250.
The only unfortunate thing about having the taller rear tires is the effective gearing difference. I was considering going to a shorter final drive before, but now that I have the taller rear tires I think it's pretty much certain that I will. It's not bad, but it is noticeable.
I also took a video of the car starting up inside:
Jeff
The only unfortunate thing about having the taller rear tires is the effective gearing difference. I was considering going to a shorter final drive before, but now that I have the taller rear tires I think it's pretty much certain that I will. It's not bad, but it is noticeable.
I also took a video of the car starting up inside:
Jeff
06-24-16, 08:49 PM
#247
Conveniently, there are a lot of 4.10 gear sets available for the GSE20 rear subframe, notably the FR-S and BRZ which come with a 4.10 and the same Torsen T2 LSD I currently have installed in my car. (The IS F and GRMN Mark X both also used a Torsen T2, in fact the GRMN Mark X even used the 4.08:1 gearing with a Torsen - they keep copying my ideas, haha).
So that's the current plan.
Jeff
07-06-16, 09:43 AM
#250
Thanks! I've now got about 6000km on the swap. Feels good man.
Jeff
07-07-16, 10:45 AM
#252
They feel great, and this may sound like a semi-odd complaint based on the type of tires, but my biggest issue with them is the road noise. They're much louder than the RE-11/A, especially in the 50-75km/h range. Enough so that I am considering the possibility of replacing them with something else. 
I probably won't though. It's hard to give up grip, lol. I haven't pushed them hard enough to get a good comparison between the RE-11A and the RE-71R.
Jeff
I probably won't though. It's hard to give up grip, lol. I haven't pushed them hard enough to get a good comparison between the RE-11A and the RE-71R.
Jeff
Last edited by Jeff Lange; 07-07-16 at 10:53 AM.
