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firm your shft in the sc430 [ a-650-e ]

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Old 08-15-07, 07:41 AM   #1
mikep34689
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Default firm your shft in the sc430 [ a-650-e ]

take the slush out of your trans next time you change your fluid, it take 30 seconds, on the driver side with the pan off, you will see a pressure regulater valve towards the front of the car, there will be what looks like a dial, push the valve in and turn to the right, [ clock wise ] there are three settings, mine was set to the soft side so i went all the way with it, the shifts are not harsh, or clunky, it is a nice possitive shift, both in power mode and e - mode, thought i would share that with you.........
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Old 08-15-07, 10:59 AM   #2
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humm can anyone else confirm this? I would be interested in trying this out...
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Old 08-16-07, 08:46 PM   #3
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What do you mean by positive shifts? My complaint is not the smothness of the shift but the lag time between the time the leaver is shifted and the actual shift.

If this post is true, you would think this could be an option performed by the service dept. Surt

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Old 08-16-07, 09:09 PM   #4
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Default quick fix for mushy shifts

what i mean by poss. shift it will take the lag out of when the shift starts to end it will give a firmer shift, not harsh, it will also take the small delay out when you first put it in gear, what the pressure reg. does it just that. regulates the the line pressure in the transmission. i came across this by luck, i was looking for a ajustable e.p.c. [ elec. press. control to firm my shifts as i have a super charger on mine and wanted to firm the shift so the clutchs were not to slip. i am a trans builder and like the firmer shifts as they make the trans last longer, its like a shift kit but not a wheel chirper. i think its what they should feel like from factory, i think if any one would complain abought the soft shift it would be a quick fix for the dealer,
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Old 08-17-07, 02:29 PM   #5
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Thanks Mike for the explain. Do you know if the dealer will do this? I only have about 4K on my 07 and I am not really interested in doing this without the blessing of Lexus.
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Old 08-17-07, 09:50 PM   #6
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Any pics of this ? What sc setup do you have? Lee can you confirm this shift adjuster?
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Old 08-18-07, 07:23 AM   #7
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im sure lexus can if they have a good trans man, the norm for lexus is not to fix but replace. i will scan some photo"s and send
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Old 08-18-07, 10:22 AM   #8
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Mike,
Is this ( a-650e) the same tranny that is in the 98-05 GS & SC 430?
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Old 08-18-07, 11:56 AM   #9
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What kind of Supercharger setup you running MikeP?
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Old 08-18-07, 02:18 PM   #10
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LMS, I think.

Someone in Houston is selling that LMS kit for $3000.
You can have it if you want. Just have JPI install and do all the tuning for you since it requires quite a bit work.
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CL link to my SC430 Flickr Link
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Old 08-20-07, 05:38 PM   #11
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yes same trans
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Old 08-20-07, 05:51 PM   #12
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Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
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CL link to my SC430 Flickr Link
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Old 08-20-07, 06:22 PM   #13
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thanks, talwang, how did you do that ? i have been playing with this for abought an hour
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Old 08-20-07, 06:28 PM   #14
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its a procharger, its on there web page, got it from lms
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Old 08-20-07, 06:39 PM   #15
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It is easy. just copy and paste your image link between "[IMG]" and "[/IMG]" here.

Since you have a photobucket account, just click on the "IMG Code" and it will automatically copy. Then all you need to do here is right clck and paste.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
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CL link to my SC430 Flickr Link
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Old 08-20-07, 06:39 PM
 
 
 
 
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330, 650e, a650e, borla, delay, firmer, harsh, kit, lexus, ls400, mods, sc430, shift, soft, tranny, transmission

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