Comprehensive AR5 Swap Thread - Page 7 - Lexus IS Forum
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post #91 of 141 (permalink) Old 03-18-2018, 09:41 PM
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Would an R154 tailshaft/housing assembly fit onto the AR5? I'm done with my clunker and it's coming out one way or the other but I already have a beefy driveshaft coupled to it that I would hate to lose.

It's a small price to pay to get rid of the horrible shifting, although I'm sure my transmission must have something wrong with it, but I'd hate to have to get another shaft made and lose the one I have. I'm looking forward to opening it up though....and seeing wtf is going on in there.

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post #92 of 141 (permalink) Old 03-19-2018, 11:36 AM
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I don't think anyone here would know that. Looking at the pictures, they look similar bolt patterns but there's more to it than that.


Maybe email/call Aaron at driftmotion. He might try to sell you a new R154 for $2400 though. Really not that bad of a price.
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post #93 of 141 (permalink) Old 03-30-2018, 02:14 PM
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Did you guys reuse the bolts from the ar5 bearing retainer plate and bellhousing or replace with new?
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post #94 of 141 (permalink) Old 03-31-2018, 09:45 AM
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Originally Posted by RAJJis300 View Post
Did you guys reuse the bolts from the ar5 bearing retainer plate and bellhousing or replace with new?
For the retainer I reused the bolts with Toyota red transaxle FIPG. For the bellhousing to trans I reused the bolts and had to buy a couple more at the hardware store due to the lengths being different. For bellhousing to engine I bought all new.
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post #95 of 141 (permalink) Old 03-31-2018, 10:27 AM
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For the retainer I reused the bolts with Toyota red transaxle FIPG. For the bellhousing to trans I reused the bolts and had to buy a couple more at the hardware store due to the lengths being different. For bellhousing to engine I bought all new.[/QUOTE]

I used Toyota black FIPG, will that be ok or should I re-do and use the red?
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post #96 of 141 (permalink) Old 03-31-2018, 01:59 PM
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Originally Posted by RAJJis300 View Post
I used Toyota black FIPG, will that be ok or should I re-do and use the red?

I don't know what the difference is.

Except I know the black is for the engine oil pan and the red is for transmissions. I assume the black will substitute for the red unless there's something harmful in it for the trans..
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post #97 of 141 (permalink) Old 03-31-2018, 05:21 PM
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Another driveshaft option: DSS will do a 20lb CV AL shaft rated for 500hp for $800 shipped. yeah...pricey!


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post #98 of 141 (permalink) Old 05-09-2018, 09:18 AM
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I want to update and share some info with my ar5 going on 2 years now. The trans is still running good. I dont launch on it but I do run a 6266 at 30psi and MT 255 50 16 on FD RX7 16x8 wheels.

I've ran into one issue. I thought my rear output seal was leaking. I recently changed the clutch and checked it all out. It turns out that the shifter retainer bolts backed out and was leaking gear oil. I couldn't tell thats where it was coming from until i dropped the trans, and i believe those bolts are next to impossible to get to with the trans in the car.

I showed a friend and the exact same thing happened to him with his r154.

We should add these bolts to the list of things to threadlock as this could've gotten a lot worse. I hope this helps someone.

I did initally tighten them pretty good but your going against a rubber seal so its hard to gauge when your tearing it up or if its too loose.

Car is still a work in progress so not nearly as clean as most of you guys.
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Last edited by airfed_lex; 05-09-2018 at 09:41 AM.
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post #99 of 141 (permalink) Old 05-10-2018, 09:56 AM
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airfed_lex thanks for the update. Good stuff to know! You chewed through your clutch in 2 years?

2004 CWP IS300
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post #100 of 141 (permalink) Old 06-11-2018, 02:53 PM
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airfed_lex thanks for the update. Good stuff to know! You chewed through your clutch in 2 years?
actually ive swapped clutches twice in the past 2 years and a few days ago took the dive on the spec twin disk.

So far to date ive had the drift motion stage 3, 500whp rated, slipped hard at 527
and the drift motion stage 3.5 600whp rated. slipped at 607
both broken in for 500 miles stop and go

I wanted to try out the super single but im tired of messing around with the clutch so i called spec and its actually not a bad price.

Its like $1800 for the full kit. But they dont have a master cylinder for the is300 which requires 3/4" bore for the twin disk. So i just bought a 1986 land cruiser master cylinder (3/4) as noted in the ar5 archives.

Good news is that the master cylinder that comes with the kit is $299. So i got the kit without the cylinder for $1560 shipped, and then a AISIN 1986 land cruiser master cylinder for $48.

Im ready to turn up the boost and see if this trans is going to blow. 700whp @ 3200lbs or bust.
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post #101 of 141 (permalink) Old 06-12-2018, 08:18 AM
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Interesting. I picked up the DM Stage 3.5 kit, which is supposedly good for 550-600rwhp. I'm hoping to have around 450-500rwhp but that'll be a while. For now it's just N/A and slowwww... In the meantime before boost I'm going to do the Figs Mega Rear Kit and Master Bushing Kit.

Hear anything about the DM 3.5?

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AR5

Last edited by dcharms; 06-12-2018 at 08:24 AM.
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post #102 of 141 (permalink) Old 06-12-2018, 08:42 AM
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Quote:
Originally Posted by dcharms View Post
Interesting. I picked up the DM Stage 3.5 kit, which is supposedly good for 550-600rwhp. I'm hoping to have around 450-500rwhp but that'll be a while. For now it's just N/A and slowwww... In the meantime before boost I'm going to do the Figs Mega Rear Kit and Master Bushing Kit.

Hear anything about the DM 3.5?
Yep check the post just before your post. Ive had the dm3 and dm3.5, From now on im not buying a clutch that meets the rating. I slipped a dm3.5 at a little over 600whp. It held good at 500.

I must say the dm3 is a little harder than stock pedal. The dm3.5 is softer than my stock is300 pedal. Like scary soft, i thought something was wrong at first. I got to compare the two since i have twin is300's. For 500whp the dm3.5 will be perfect.

Spec needs to put springs in their stage 5 (700ish torque)

Dm needs to cut the price on the super single. To many other proven twin disks for the same price by the time you add the second disk.

This ar5 needs to BLOW!!
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post #103 of 141 (permalink) Old 06-13-2018, 12:52 PM
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Quote:
Originally Posted by airfed_lex View Post
Yep check the post just before your post. Ive had the dm3 and dm3.5, From now on im not buying a clutch that meets the rating. I slipped a dm3.5 at a little over 600whp. It held good at 500.

I must say the dm3 is a little harder than stock pedal. The dm3.5 is softer than my stock is300 pedal. Like scary soft, i thought something was wrong at first. I got to compare the two since i have twin is300's. For 500whp the dm3.5 will be perfect.

Spec needs to put springs in their stage 5 (700ish torque)

Dm needs to cut the price on the super single. To many other proven twin disks for the same price by the time you add the second disk.

This ar5 needs to BLOW!!
I'd be scared AF to blow my trans and you're TRYING to blow yours. Lol! That's awesome...

I'm glad I went with the 3.5 then. And I thought the same thing about the soft pedal. It's definitely softer than stock, which is crazy to me.

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post #104 of 141 (permalink) Old 06-22-2018, 08:09 AM
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Spec twin is in. One sprung 6 puck and one unsprung 6 puck. 1986 land cruiser 3/4" bore master cylinder also in.

I had to get the t51r mod to make me feel better about being slow.
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post #105 of 141 (permalink) Old 06-27-2018, 08:00 AM
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That's a pretty package! I have a ton of suspension stuff coming in soon...can't wait!

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