So who here is running the ACT Extreme Clutch on their R154? - Club Lexus Forums

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So who here is running the ACT Extreme Clutch on their R154?

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Old 02-12-13, 07:23 PM   #1
emoFTW
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Default So who here is running the ACT Extreme Clutch on their R154?

I plan on buying one, just wondering which members on here have the same clutch with no issues... Issues as in crank walk...
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Old 02-12-13, 09:30 PM   #2
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Pedal pressure is not an issue for me, the car is not a dd.
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Old 02-13-13, 03:32 AM   #3
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you are risking crank walk for sure as ive seen a couple here with the extreme.. esp if you are on a seasoned block as opposed to a newly built block .. if you are making that much trq , you need to move to a twin disk

im at 600 rwhp and just shy off 500 lbs trq and the act hd has no issue holding at this power level since oct 2010 and even i should be moving to a twin disk and will shortly
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Old 02-13-13, 09:55 AM   #4
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Hm... That's a good point. My block probably has a lot of miles on it. It's going to be mated with a 1jz. Twin disc is out of the question for me, I just can't bring myself to spend that kind of money on a td for the r154.

I've been looking at south bend clutches as well.
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Old 03-26-13, 12:42 AM   #5
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I've been running the act extreme pp for two years now with 555ft/lbs torqe. No crankwalk no problems at all. I also use a chromoly flywheel with a southbend feramic disk. I drive the car every other day or so. I don't get this whole afriad of heavy pp thing. It holds the power with zero problems for me.
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Old 03-26-13, 11:46 AM   #6
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I hear more about crankwalk than I ever hear positives with ACT. Ill never run one. Go with a southbend redone stock plate. Quickgs4 runs this setup on his car... works amazing. North of 600 ft/lbs.
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Old 03-26-13, 01:16 PM   #7
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you will have ppl with experience who have had success with it and you has not...

I, personally like to try things out on my own...........
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Old 03-26-13, 01:54 PM   #8
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You guys are more than welcome to try it !

I have been running ACT for the past 5-6 years and i lost about 4 engines with that clutch .

I daily drive my car , so if you put it in your car and drive your car twice a week then ...

Pull your oil pan and i am almost sure you have the trust washers sitting in your oil pan..

@Preston you just started using Southbend , you used the act for how many miles and how many years?

I drive my car everyday , i just lost a block 2 weeks ago , the dowel pin on the crank pulley started diggin into the crank when i caught it.

I have used just about every single disc clutch their is for an R154 on my car or my friends..in the past 6-7years .
I used an old act pp i had in the garage for couple days till i get my new clutch back from SB and it cost me $2500.

You don't believe me , you wanna try it on your own BE my guess and good Luck!

Act will hold the power but it will **** your crank up been there , done that.
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Old 03-26-13, 11:35 PM   #9
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ive used The act extreme pp as stated above for atleast 2 years with atleast 10,000 miles or more on the PP, At the drag strip I finally blew the act cluth disk up, i then sent my act extreme PP to southbend where they rebuilt my act ex pp and also built me a 6 puck feramic disk. I've currently ran this setup for about 7 months or more.
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Old 03-28-13, 09:58 AM   #10
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I daily this clutch. Prob have 20k on it. Also dailied the f1 stage 3 which is the knock off version and it prob had 40k on it. Low power though about 400/350tq. No issues yet. I've seen heavy rps pressure plates crank walk **** in 20k first hand. Also, I have no neutral safety switch and don't clutch in til the car is watm
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Old 03-29-13, 10:03 PM   #11
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I went ahead already and bought the south bend clutch. Didn't want to chance anything.
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Old 03-30-13, 05:24 AM   #12
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I have the ACT Extreme Stage 4 clutch and the DM lightweight flywheel. No issues here.
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Old 03-30-13, 06:18 AM   #13
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^^^ Good to hear!

OP I am glad you made the right choice and this is the best clutch you have ever owned , I will not get ride of mine for a twin disc.

I even have a spare SB sitting here.
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Old 03-30-13, 05:05 PM   #14
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Im thinking about pulling my trans and switching the clutch out before I finish the build, Would hate to have this much time and money and go out and destroy the motor from a stupid clutch lol
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Old 03-30-13, 09:15 PM   #15
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I would run a stock 7mgte stock $85 pressure plate to just make 500whp before I ever put an act on my car...

My car would have been done weeks ago if it wasn't for this pos act clutch I put in my car.

And the clutch bypass is not gonna help you either.
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1jz, 2jz, act, bend, clutch, crank, extreme, f1, installation, kit, pp, r154, rwhp, sc300, south, walk, xtreme

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