5 Speed Vs. Automatic
03-21-11, 07:10 PM
#46
Lexus Test Driver
iTrader: (4)
Join Date: Jul 2003
Location: Tennessee
Posts: 831
Likes: 0
Received 0 Likes
on
0 Posts
If you have an sc400 then your trans will handle 400whp stock as it is the same as a tt auto internally but if you need more and want to make it perform better then get an IPT valvebody and a PI stall and it should handle more than 400whp with ease and of course a good B&M cooler to keep it cool.
Doing a burnout and allowing the car to shift will kill the sprags which is the weak link but if you avoid shifting the car while it is spinning then they have been known to handle north of 700whp and run single digits in the 1/4.
Doing a burnout and allowing the car to shift will kill the sprags which is the weak link but if you avoid shifting the car while it is spinning then they have been known to handle north of 700whp and run single digits in the 1/4.
My first one (the original) had the slipping clutch packs. The one in there now (the replacement) isn't shifting properly and is making weird noises - for example, today it revved to 6875 rpms before shifting. Don't know why, I take pretty god care of my car as a whole.
03-21-11, 08:41 PM
#49
That stuff has friction modifiers that are very critical to the performance and life of the auto trans so even if there is a little bit of dex merc it will fail as I had an old es300 that I purposely put dex/merc in to see if it would have any effect before I sent it to the junk yard and it lasted all of 1,200 miles and started acting funny the same day I flushed the trans.
I just had to know if it mad any difference and it did.
I just had to know if it mad any difference and it did.
03-22-11, 10:55 AM
#50
Lead Lap
Join Date: Sep 2010
Location: CA
Posts: 680
Likes: 0
Received 0 Likes
on
0 Posts
It can be done and has been done but is a time bomb and for the record I don't "manual bash" as I drive an evo 8 daily and just sold my supra 6spd which I regret however it gets old daily driving a stick shift as sometimes it's nice to jump in the sc400 and cruise with no worries but as stated it comes down to personal choice and when I was younger I would have tried to argue the same thing for the fun facror but I am just an old fart now
I am losing my edge that I had when I was in my 20's so I guess I am throwing in the towel and no longer fighting to be young anymore
Thread
Thread Starter
Forum
Replies
Last Post
Im2bz2p345
Hybrid Technology
8
11-19-14 06:15 PM
