Notices
Drag Strip Discussion about Lexus straight line racing on the 1/4 mile, 1/8 mile and top speed flats.

New personal best 1/8 times!

Thread Tools
 
Search this Thread
 
Old Oct 16, 2009 | 07:39 PM
  #31  
stevechumo's Avatar
stevechumo
Lexus Test Driver
iTrader: (5)
 
Joined: Nov 2004
Posts: 1,186
Likes: 4
From: CA
Default

Sorry to hear that, Khris. I had the same symptom when my tranny broke. The engine ran fine, but the car couldn't move forward or backward. My torque converter didn't break and it's still in use now with the new built tranny. It turned out all of cluches were gone.
Reply
Old Oct 16, 2009 | 10:06 PM
  #32  
SC400TT's Avatar
SC400TT
Lexus Champion
iTrader: (4)
 
Joined: Mar 2003
Posts: 3,395
Likes: 8
From: Florida
Default

Hey KC that is very surprising and it definitely sucks. Keep us updated.

Ryan
Reply
Old Oct 17, 2009 | 03:23 PM
  #33  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

I will go into more detail later but yep, convertor broke!

Finished putting the stock one back in today and drove it home.

KC
Reply
Old Oct 17, 2009 | 11:31 PM
  #34  
stevechumo's Avatar
stevechumo
Lexus Test Driver
iTrader: (5)
 
Joined: Nov 2004
Posts: 1,186
Likes: 4
From: CA
Default

Originally Posted by KC95SC400
I will go into more detail later but yep, convertor broke!

Finished putting the stock one back in today and drove it home.

KC
If my memory doesn't betray me, I think you have the PI converter. The PI converter company should have warranty on it, though. My Lextreme converter has a lifetime warranty.
Reply
Old Oct 18, 2009 | 05:28 AM
  #35  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Originally Posted by stevechumo
If my memory doesn't betray me, I think you have the PI converter. The PI converter company should have warranty on it, though. My Lextreme converter has a lifetime warranty.
Ya, two years. I bought it in July, 2007. I plan on contacting them and complaining.

Go here for a little more info on what happened - https://www.clublexus.com/forums/per...converter.html

KC
Reply
Old Oct 23, 2009 | 07:44 AM
  #36  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Hey guys. Met this guy at Mooresville dragway and he does videos for a Grand National club. He was impressed with my car and shot a video for me. Here it is: http://www.youtube.com/watch?v=IbuhvE20Ch8

The only thing that sucks is that the run right before this one, I had just a chirp of the tires (street tires BTW) and ran a 7.909, wish he had filmed that run. The 60 foot in the video run was 1.983 vs a 1.85 when I ran the 7.909.

KC
Reply
Old Oct 23, 2009 | 01:48 PM
  #37  
SC300_704's Avatar
SC300_704
Lexus Champion
iTrader: (5)
 
Joined: Sep 2006
Posts: 1,861
Likes: 3
From: NC
Default

^^ dang was this yesterday? b/c i was planning to go to but had to work early the next day. one of my good buddy went though, he was driving a black EG w/ a bunch of holes on the rear bumper and a k24/k20 swap..he runs mid-low 8's all motor.
Reply
Old Oct 23, 2009 | 03:35 PM
  #38  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Originally Posted by SC300_704
^^ dang was this yesterday? b/c i was planning to go to but had to work early the next day. one of my good buddy went though, he was driving a black EG w/ a bunch of holes on the rear bumper and a k24/k20 swap..he runs mid-low 8's all motor.
No it was actually two Sundays ago....

I didn't go yesterday, it was my wifes birthday. I went to Darlington Wednesday night and figured out that the stock stall speed is no good for drag racing.

KC
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

2026 Toyota Sienna Woodland: Fuel-Sipping Family Hauler

 Michael S. Palmer
story-1

10 Cheap Lexus & Toyota Models That are Super Fun to Drive!

 Joe Kucinski
story-2

5 BEST / 5 WORST Selling Lexus & Toyota Models in 2026 (So Far)

 Joe Kucinski
story-3

Toyota and Lexus Join Mille Miglia For The First Time

 Verdad Gallardo
story-4

Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

 Michael S. Palmer
story-5

5 Best & 5 Worst Lexus Daily Drivers

 Joe Kucinski
story-6

Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

 Brett Foote
story-7

2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

 Michael S. Palmer
story-8

Top 10 Most Confusing Things Lexus Has Ever Done!

 Joe Kucinski
story-9

2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

 Michael S. Palmer
Old Oct 23, 2009 | 03:58 PM
  #39  
SC300_704's Avatar
SC300_704
Lexus Champion
iTrader: (5)
 
Joined: Sep 2006
Posts: 1,861
Likes: 3
From: NC
Default

Originally Posted by KC95SC400
No it was actually two Sundays ago....

I didn't go yesterday, it was my wifes birthday. I went to Darlington Wednesday night and figured out that the stock stall speed is no good for drag racing.

KC
oh ok never mind then..
Reply
Old Oct 27, 2009 | 05:51 PM
  #40  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Alright guys, an update finally.

Sent my tq converter back to PI on Friday. I am waiting to hear from them to see how much they'll want to fix and re-stall it. Thinking about going with a 3200-3800rpm stall up from the 2800rpm it was.

Exchanged emails a few times with Zohair at Boost Logic. Also contacted atf billets last week to ask a few questoins, they have yet to call me back. I more or less decided that I don't have the money for a "built" transmission.

So, I decided to keep my business with IPT. I already have a valve body from them. I ordered their Raybestos rebuild kit and their upgraded sprag. Also ordered a rather large transmission fluid cooler to upgrade the one I have now. Total came out to about $820 shipped. Their sprag is only 55 bucks. I was assured it is an upgrade over the stock unit, not sure why the other couple of places that have it charge 600 dollars.?.?

I am going to call around and get a few quotes on putting it all together for me. I already called one place and was told about $350 which is not at all bad. Basically told them that I would bring them the transmission without the valve body and I just want them to rebuild it for me. I would then swap the valve body when I swap the trannys.

So in conclusion, for about $1200 I should have a pretty well built transmission that will hopefully last me a bit. This is far better than the anywhere from $2200 (not including shipping back and forth) to $3400 (also not including shipping) that BL, ATF billets or IPT want for their units.

I'm a little worried about how much PI is going to want to fix the converter but it shouldn't cost anymore than a new one. I've done some searching and haven't found many other converter options. I will say that my car is not nearly as fun to drive with the stock 2000rpm stall.

KC
Reply
Old Oct 27, 2009 | 05:54 PM
  #41  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

And, I'm probably going to throw in a set of these while I have the transmission out again.

https://www.upscaleautomotive.com/p-...xus-sc400.aspx

KC
Reply
Old Nov 29, 2009 | 06:04 PM
  #42  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default NEW PERSONAL BEST TIMES - 1/8 mile!

Went to my local 1/8 track today and had some great results!

Some notes: Freshly rebuilt transmission with Raybestos blue plate clutches, IPT valve body, dex3 fluid and a new line pressure cable. Rebuilt and restalled converter (3200-3400). Running on Mickey Thompson drag radials, stock height (255-50-16's on Mustang alloys). The first two runs I did not have my water / meth injection pressure switch hooked up by mistake. Best 1/8 before today was a 7.874 @ 89.517.

Run 1:

60 - 1.751 (new record)
330 - 5.125
1/8 - 7.915 @ 87.254

Run 2:

60 - 1.787
330 - 5.171
1/8 - 7.952 @ 87.536

At this point I realize that my water / meth is not working and I'm hitting 160 degrees by the end of the last two runs. You can actually see the improvement in MPH with it back on and the first couple of runs after are about the same despite crappy 60's.

Run 3:

60 - 1.881
330 - 5.218
1/8 - 7.962 @ 88.592

Run 4: Throw away run due to blowing the tires off.

60 - 2.062 (spun)
330 - 5.675
1/8 - 8.478

Run 5: New record! This run SHOULD have resulted in an 11.89 or so if I was running the 1/4!!!!!!!!!!!!

60 - 1.681 (new record of course)
330 - 4.971
1/8 - 7.703 @ 88.723!

Run 6: Not as good but still great!

60 - 1.737
330 - 5.043
1/8 - 7.774 @ 89.053

When I launched on run 5 I was cheering to myself by about the 330 mark. I just knew it was going to be awesome by the way it felt when it left. I don't think they did but it almost felt like the front tires may have lifted slightly.

Being on the new transmission / converter and first time really on the MT DR's, I was really kind of taking it easy. Run 5 I launhed at about 2800rpm which I couldn't do before. Run 6 I launched at about 2600rpm. I think my actuall stall speed is around 3400. At least that's the rpm (about) that the engine immediately revs to (watching back the logs) when I floor it. So, I could likely lauch with some more revs.

Now I just need to do it on a 1/4 track to see if I can run 11's!

I have run 5 and 6 on video! I have uploaded run 5 to youtube but it's taking forever for them to "process" it. As soon as I can I will link it here. You can barely make out the time on the board if you look very hard. LOL. I have attatched a time slip scan for run 5.

KC
Attached Thumbnails New personal best 1/8 times!-slip-7.073.jpg  
Reply
Old Nov 29, 2009 | 08:21 PM
  #43  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Here's the video of the 7.703 run!

http://www.youtube.com/watch?v=JM2qX_nLHzw

KC
Reply
Old Nov 29, 2009 | 10:19 PM
  #44  
WDoherty's Avatar
WDoherty
Pole Position
 
Joined: Apr 2006
Posts: 245
Likes: 0
From: Texas
Default

sounded like your shifts were faster also, i think you said in your build thread you weren't going to do much drag racing, haha. How did PI handle the torque converter situation?
Reply
Old Nov 30, 2009 | 06:49 PM
  #45  
KC95SC400's Avatar
KC95SC400
Thread Starter
Lexus Test Driver
iTrader: (3)
 
Joined: May 2007
Posts: 1,272
Likes: 4
From: NC
Default

Originally Posted by WDoherty
sounded like your shifts were faster also, i think you said in your build thread you weren't going to do much drag racing, haha. How did PI handle the torque converter situation?
Yes, it is shifting pretty darn good. I was tuning the shift points between runs.

I was NOT running with the converter locked for shifting like I had been. Had it locking in 3rd only after the 2-3 shift. I was running before with it locking at about 3500rpm in 1st and staying locked up for the whole run including shifts. This gets me a little more speed per gear and makes it shift faster but may have been what stressed the converter enough to break it.

The shifting for normal driving can be a bit brutal at times but I honestly like it that way.

Had some trouble with PI but it all worked out in the end. And, the higher stall seems to be working for me.

KC
Reply



All times are GMT -7. The time now is 07:52 PM.

story-0
2026 Toyota Sienna Woodland: Fuel-Sipping Family Hauler

Slideshow: Did Toyota build an off-roader minivan? Check out our Sienna Woodland review!

By Michael S. Palmer | 2026-07-08 12:44:30


VIEW MORE
story-1
10 Cheap Lexus & Toyota Models That are Super Fun to Drive!

Slideshow: 10 cheap Lexus and Toyota models that are super fun to drive.

By Joe Kucinski | 2026-07-08 08:47:24


VIEW MORE
story-2
5 BEST / 5 WORST Selling Lexus & Toyota Models in 2026 (So Far)

Slideshow: 5 best and 5 worst selling Lexus and Toyota models in the first half of 2026.

By Joe Kucinski | 2026-07-06 15:37:09


VIEW MORE
story-3
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-4
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-18 14:36:21


VIEW MORE
story-5
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-6
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-7
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-8
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-9
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE