R154 swap...all you need to know is here!!! - Lexus IS Forum
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post #1 of 540 (permalink) Old 08-18-2004, 08:43 AM Thread Starter
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r154 swap

Can some body hit me on AIM, I got alot of questions, some to basic to post here :-? Thanks :D
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post #2 of 540 (permalink) Old 08-18-2004, 09:51 AM
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PM redline.

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post #3 of 540 (permalink) Old 08-18-2004, 09:55 AM
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What do you need tiny?

Pm me

2005 Corolla XRS 6 speed
1993 Blue 6 Speed Supra TT
1993 Red 6 Speed Supra TT
1998 Quicksilver 6 Speed Supra TT

(Worlds first 2jzgte/6speed IS300)

http://img21.imageshack.us/img21/2017/nosrt1.jpg
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post #4 of 540 (permalink) Old 10-11-2004, 11:55 AM
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**UPDATE**Those interested in R154 read...

I have been really happy with my R154. I like how the tranny feels, I especially donít find it bulky but hey my last manual car was a mustang.

My first R154 broke after running some 12 sec passes, but I always knew that tranny had problems before it was installed, it was VERY abused. I know have another used tranny installed for 3 months with no problems.

Now for the heads up:

Your clutch setup can be vital to how long your tranny will last. My first clutch with the R154 was a stock MKIV TT supra pressure plate with a RPS UNSPRUNG 6 puck disk. Car had stock MKIV supra TT flywheel. Clutch held really well but when fast shifting, it banged the tranny REALLY hard since it was unsprung. I believe this was also a cause for the first tranny failure. Not to mention the clutch pedal was really STIFF, was killing my left knee. I also noticed that when my car was an AUTO, it revved much easier and went all the way up to 7200 rpms (haltech, higher rpm limit) With the manual tranny the engine felt much more lazy and would barely go to 6500rpms. I knew this was due to the extremely heavy 30+lb flywheel it had from the MKIV TT Supra.

I looked into getting a more streetable clutch with a lighter flywheel and found the following.

http://www.prostreetonline.com/buy/e...utches/th04sd/

Exedy hypersingle for the 1jz with lightweight flywheel.
It cost around $1200 but they have it on special $900 SHIPPED!! This was an awesome price for a complete kit which includes a flywheel. I sold my old setup for $500 and got this installed.

The 1jzgte flywheel it has bolts perfectly in out 2jz. I only had to get a 1JZ throw out bearing and to install it. $25 US new part number 90363-45012 and a Clutch hub release for 1jz (made it custom $140)

I just broke in the clutch and here are the details:

The car feels it gained about 40rwhp! It revs back to 7k rpms with no hesitation and now the car has completely no traction in first and second unlike before. Can wait to go back to the track.

Pedal is around 25% softer than the stock supra pressure plate with 6 puck disk RPS combo.

Rattles less than previous combo in idle off clutch.

Holds fine up to now

Its a little harsher on contact (vibrates) when taking off in slow stars (has less slippage since its all metal I believe) But it has gotten better with time.

No more hard banging on the tranny with fast shifts, feels that the tranny is taking much less punishment.

Hope this info helps.

2001 IS300 11.99@120mph SOLD
2006 IS350 Black/Black Navil/ML 13.6@101

Last edited by cariza; 04-21-2005 at 10:17 AM.
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post #5 of 540 (permalink) Old 10-11-2004, 12:42 PM
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awesome update bro! glad to hear this new setup is working out well. just curious, but the majority of the stiffness we feel in OUR clutch is via the pressure plate right?

if thats so i imagine the mkiv guys have just as stiff as a clutch pedal as you did then cariza....?

PFS 2, TT internals, daily driver :)
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post #6 of 540 (permalink) Old 10-11-2004, 01:05 PM
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Great write up, thanks for taking the time to post, it's definitely appreciated.
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post #7 of 540 (permalink) Old 10-11-2004, 03:20 PM
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Cuanto cuesta por el R154?
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post #8 of 540 (permalink) Old 12-17-2004, 08:15 AM
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r154 question

sorry if this has been asked and answered before... i dont have alot of time to search due to an unforeseen problem with my stock tranny.


i can get my hands on a used r154 along with a jdm 1jz to 2jz bellhousing... my question is... can i use my phr stage 3 clutch/pressure plate..stock flywheel...??

or do i have to get a clutch/flywheel for the 7m-gte? any and all info will be greatly appreicated...

tia.

dan
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post #9 of 540 (permalink) Old 12-17-2004, 09:01 AM
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You can't use the disc, you should be able to use the pressure plate and flywheel
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post #10 of 540 (permalink) Old 12-17-2004, 09:12 AM
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The following items were used on my car (swap from 5-speed to R154)....

MK4 Lightened Flywheel
MK4 Pressure Plate
MK3 Clutch
MK3 Slave Cyclinder

Do a search for Cariza (username). He listed some very detailed information. His was an Auto to R154 swap, but some of the information will apply to you.



----------------------------------

EDIT: I suggest buying 2 R154 junkyard boxes and sending one out to be rebuilt. I did that and am very happy with performance/smoothness of the rebuilt box (vs. the unknown mileage box).

Here is the place that rebuilt my R154...
Marlin Crawler - http://www.marlincrawler.com/
Dept. 4x4Wire
1543 North Maple Suite B
Fresno, CA 93703
Phone: (559) 252-7295


Good information...
Overhauling the Toyota/Aisin R151F Transmission
http://www.4x4wire.com/toyota/tech/r151f/

2002 IS300 (sold) --> 573whp on 93 pump :::: 749whp on C16

2006 IS350 (current)

Last edited by redline814; 12-17-2004 at 09:21 AM.
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post #11 of 540 (permalink) Old 12-17-2004, 11:24 AM
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how much was the rebuild and how long did it take? did you upgrade the thrust washer or whatever the weak link was?
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post #12 of 540 (permalink) Old 12-17-2004, 01:23 PM
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It cost about $800 for parts and labor (looks like the price went up since I had mine done).

I had him (Marlin) upgrade the bearing cover plate to a heavy duty one he makes. He says the washers fail because...the shaft (is held by the bearing cover plate), bends and pinches the washer, starving the washer of oil, leading to heat and eventually failure. I could not find any place that makes the thrust washer. He is supposed to be working on that upgrade part.

You mail him a junk R154. He rebuilds it and mails it back to you in about a few weeks. All rebuilt boxes come with a one-year unlimited mile warranty.

Here is a pic of the bearing plate...


2002 IS300 (sold) --> 573whp on 93 pump :::: 749whp on C16

2006 IS350 (current)
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post #13 of 540 (permalink) Old 12-17-2004, 05:46 PM
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Dumb question......what Toyota model does the r154 tranny come from? Is it a 5 speed?

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post #14 of 540 (permalink) Old 12-17-2004, 06:23 PM
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yes.. it is a 5speed. it comes from the mkIII supra, sc300... and i dont know if there are any others...
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post #15 of 540 (permalink) Old 12-18-2004, 09:41 AM
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didnt the sc300 have a W55 or w58 and not a r154?
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