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2006 IS250 LS1 Swap

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Old 07-23-13, 08:21 AM
  #196  
zapa
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That is for sure one of the more impressive builds I have seen. Well done man and I hope you plan on hitting the dyno and drag strip sometime soon!!!
Old 07-23-13, 08:32 AM
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medic250
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Absolutely incredible, your ability to take on such a mechanical feat in this amount of time is crazy! Opened up a lot of doors for many do it yourself-ers too! Props to you thumper and goodluck with the rest of it!
Old 07-23-13, 08:32 AM
  #198  
carlos
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dude, i'm in love.
Old 07-23-13, 08:39 AM
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Originally Posted by zapa
That is for sure one of the more impressive builds I have seen. Well done man and I hope you plan on hitting the dyno and drag strip sometime soon!!!
I will definitely hit up the dyno as soon as I break in the engine properly. And I'll be out at PBIR once I get the engine tuned. It's been a long process so even though I am tempted too, I don't want to rush into anything.
Old 07-23-13, 09:40 AM
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sounds like a MONSTER!...great build up...keep us posted...
Old 07-23-13, 11:06 AM
  #201  
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when I watched the first video I was like woaaaaaaahhhhh!!!! lol
You sir are a scholar and a gentleman.!!!!
Old 07-23-13, 03:47 PM
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wiredGS400
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Default Wow, Amazing

Just a couple of thoughts. Are you worried that the modification to the clutch pedal, which now offsets the end of the pedal to the side, will introduce unacceptable amounts of rotational load on the pedal that may cause failure.

Also, what, in the end, did you decide to do about the shifter, and do you have a pic?

Once again, just WOW.
Old 07-23-13, 04:41 PM
  #203  
fasttexasz
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Ridiculous amount of time but well worth it. You can find LS motors fairly easy and so many mods its offensive to us F guys. Pretty sure with a decent amount of tune that thing will run mid 11's with ease. Great job, now what kind of badges you gonna run?
Old 07-23-13, 04:54 PM
  #204  
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wow... really awesome build.
Old 07-23-13, 05:40 PM
  #205  
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Get a real LSD in the 250 and you will have some real fun....as of now you are just peg legging it with,an open diff...
Old 07-23-13, 05:45 PM
  #206  
tmf2004
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Just went through 14 pages.. Awesome build...
Old 07-23-13, 05:53 PM
  #207  
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congrats on the first Ellis Juan 2IS
Old 07-23-13, 06:02 PM
  #208  
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Originally Posted by Thumper28
Wow, thanks for the compliment.

Honestly, I am not sure how much of the cluster will work. Everything on the interior runs off separate ECUs than the engine so I am not worried about it all powering up. What I am worried about is that the wiring diagram shows some wires from the engine ECU going into a "microprocessor" in the gauge cluster. Because of that I am not sure if the car uses traditional tach and speed signals.

I actually drove the car this weekend, I'll post the video shortly. As soon as I sort out some drivability issues I'll look closer at the gauge integration.
It doesn't use the traditional tach and speed signals. It's been the bane of modified Lexus vehicles since the 1IS. Does the push button start work same as factory?
Old 07-23-13, 10:21 PM
  #209  
Thumper28
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Originally Posted by wiredGS400
Just a couple of thoughts. Are you worried that the modification to the clutch pedal, which now offsets the end of the pedal to the side, will introduce unacceptable amounts of rotational load on the pedal that may cause failure.

Also, what, in the end, did you decide to do about the shifter, and do you have a pic?

Once again, just WOW.
I actually had the same thought earlier today. Currently the offset spacer is bolted to each side of the pedal using a total of 4 3/8" bolts threaded into the aluminum. After some abuse on the pedal I decided it would be best to have the spacer welded in as well. I'll probably drop it off with the welder when I drop off my exhaust for final welding. Luckily a failed clutch pedal is not catastrophic so I'm not too worried driving it around for now.

I went with the standard shifter from the f-body. Not the offset one from the GTO. It falls in the perfect location. I'll have more pics soon. I still have a lot of work to do on the interior so this thread is nowhere near complete.
Old 07-23-13, 10:29 PM
  #210  
Thumper28
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Originally Posted by fasttexasz
Ridiculous amount of time but well worth it. You can find LS motors fairly easy and so many mods its offensive to us F guys. Pretty sure with a decent amount of tune that thing will run mid 11's with ease. Great job, now what kind of badges you gonna run?
I don't even want to start thinking about how many hours I have spent on the swap. It's a labor of love and a learning experience so I have to say overall it's been worth it.

I know what you mean with the mods. I open up a Jegs or a Summit catalog and there are entire sections just for the LS engines. You can even find performance parts at Advanced Auto Parts and Pep Boys in a pinch. It's a nice change from what I am used to.

I have been back and forth many times on the badging. Everything from IS570 to subtle LS1 badges where the F badges usually go have been brought to the table. You'll all find out as soon as I make a decision. I am always up for suggestions.


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