CUSCO 4.55 FINAL DRIVE installed. - Page 6 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Racecomp Engineering · 01-31-2013, 02:07 AM

Quote:

Originally Posted by 03Z33

Cusco Retail on the 4.556 is $937 but discount structure is different than other Cusco products since it's a rebranded OEM Toyota part.

The 4.556 was previously a TRD Japan part # 41201-SE100 (now discontinued) which used to retail for $700'ish in Japan

The Toyota part numbers originally posted by Jeff Lange are:
3.58:1 - 41201-80125
3.73:1 - 41201-80050 (OEM Base FR-S/86/BRZ)
3.91:1 - 41201-80052
4.10:1 - 41201-19605 (OEM Torsen equipped FR-S/86/BRZ)
4.30:1 - 41201-29606 (OEM MK3 Supra Manual non-turbo w/LSD) (Included pinion seal will not fit) Currently available in USA from Toyota dealer for roughly $700
4.56:1 - 41201-19557 Toyota Japan only, does not come up in USA parts catalog (Included pinion seal will not fit)

Auto Factory sell the OEM Toyota 4.556 in Japan for $500
http://autofactory.jp/product/topv.p...&cate=7&seq=13

Auto Factory also offer 4.8 & 5.1 gears which require a spacer (included) to work, those retail for $825

http://autofactory.jp/product/topv.p...s&cate=7&seq=6
http://autofactory.jp/product/topv.p...s&cate=7&seq=5

Revolution also offer the 4.8 & 5.1 gears for a slight mark-up around $920:
http://revo-tune.jp/catalogue/detail.php?id=287
http://revo-tune.jp/catalogue/detail.php?id=286

Revolution also offer the 1'st & 2'nd gear same as Cusco but for less at $1840
http://revo-tune.jp/catalogue/detail.php?id=288

MFactory also offer 4.44 & 4.67 final drive for $749 retail, these are not OEM Toyota parts but aftermarket made overseas (Australia or Hong Kong I believe)
http://www.teammfactory.com/final-drive-gear_Subaru

I purchased my 4.556 from Cusco because of the convenience and because I didn't want to wait since I have the diff cover and GT LSD all here ready to go in the car this week.

Just figured I'd share my research leading up to this $$ purchase in case it helps anyone else in future.

I would like to see a STOCK BRZ run a STOCK BRZ with 4.55.

THAT would be nice to see.

Mw

WolfsFang · 01-31-2013, 02:56 AM

Quote:

Originally Posted by Racecomp Engineering

I'm 250lbs but this spring I will get a friend of mine who is a serious drag racer AND weighs 145 (constipated) to run my car in the quarter. Kind of curious what it does with 190whp and 2550 lbs and 4.55 Final.

stick me in the car im only 125

ft_sjo · 01-31-2013, 03:40 AM

Is the pinion seal an issue? Are they readily available to work with an OEM 4.55 or whatever?

Captain Insano · 01-31-2013, 08:01 AM

Quote:

Originally Posted by Racecomp Engineering

correct some IS300's and IS250's came with LSD ANDthe 4.55 FD. Some guys on the Lexus forum found those in salvage yards. Not a easy find but normally cheap.

Yes this is VERY much a drivers mod making better use of our limited power and light weight.

One of my employees says all it needs now is a sequential box !

Myles

Can't tell if you were serious or joking about the sequential. Regardless, when I drive my AT (I drive it in manual most of the time) it feels very much like I'm driving sequential box performance car. The final drive modificaiton has me very intrigued after your review - even moreso than I already was. I really want to do this at some point on my car along with software tuning for more aggressive shifts....

Thanks again for the review and info.

Jive Turkey · 01-31-2013, 02:21 PM

looks like i'm going back to trolling lexus forums

any idea on year that the 250/300 came with a 4.55? on lexus's website the 2012 250's come with a 4.1..found a few local wrecked ones but all have the 4.1.

trying to figure out a way to keep this mod on the more affordable side before i give up and shell out for a cusco

any aftermarket lsd's that already have an upgraded drive so we can i can just swap in my driveway?

Calum · 01-31-2013, 02:44 PM

I just can't stop thinking about this FD change with this power curve.

wootwoot · 01-31-2013, 03:15 PM

UPDATE:

I have been looking for a Lexus IS300 or 250 differential to swap in as a way of getting the 4.55 final drive. THEY WILL NOT BOTH WORK. They differ in the way they bolt up. The axles are also different. At this point I am stuck.... Even if I get a unit that bolts up I cannot be sure the axles will fit. Any advice would be appreciated. I don't mind doing the leg work so the community can find a source of parts and even a DIY... But I can't buy both of them on a gamble.

Racecomp Engineering · 01-31-2013, 03:28 PM

Quote:

Originally Posted by WolfsFang

stick me in the car im only 125

I'll drop your azz off at Wendys dude ! hahaha JK.

Mw

Racecomp Engineering · 01-31-2013, 03:43 PM

Quote:

Originally Posted by Captain Insano

Can't tell if you were serious or joking about the sequential. Regardless, when I drive my AT (I drive it in manual most of the time) it feels very much like I'm driving sequential box performance car. The final drive modificaiton has me very intrigued after your review - even moreso than I already was. I really want to do this at some point on my car along with software tuning for more aggressive shifts....

Thanks again for the review and info.

a GOOD seq box is about 30k. If I had that laying around it would be a DP on a GT3. Either way my wife would divorce me and I'd be living in the shop but have an AWESOME shifting BRZ !

Mw

kanundrum · 01-31-2013, 03:49 PM

Quote:

Originally Posted by OrbitalEllipses

I'll PM you.

...I could buy a crappy mechanical LSD for that kind of money. I'll definitely look for this in a yard or Lexus forum.

Oh yea so why no LSD? Is the torsen unit good enough?

OrbitalEllipses · 01-31-2013, 04:25 PM

Quote:

Originally Posted by kanundrum

Oh yea so why no LSD? Is the torsen unit good enough?

Good enough for street. If I was serious about competition I'd have a Guard Transmissions unit with custom ramp rates, etc. but that's over $2K. If I can get the FD for $500ish parts and good labor I'll be happy. That's not happening for a while though.

wootwoot · 01-31-2013, 06:11 PM

UPDATE:

It was just confirmed that the IS250 DOES NOT come in a 4.55 final drive. I just got off the line with a parts distributor from Lexus and this was the information he gave me. I am still waiting to hear back on if the IS300 has it, but considering I haven't been able to find one anywhere I think we are chasing unicorns here. My guess is that there won't be an easy swap available. I will post back when I here from him again.

Captain Insano · 01-31-2013, 07:30 PM

Quote:

Originally Posted by Racecomp Engineering

a GOOD seq box is about 30k. If I had that laying around it would be a DP on a GT3. Either way my wife would divorce me and I'd be living in the shop but have an AWESOME shifting BRZ !

Mw

Ha... Well I know a good one is way out of range for my budget... Just sayin, that's what my AT reminds me of in manual mode... I know it is definitely not in the same ballpark as a real race sequential transmission.

TouchMyHonda · 01-31-2013, 07:37 PM

Sick tits. I have a 4.785 fd in my 5 speed trans. I sit 5k exact at 80 mph in top gear. With 240whp I never down shift on the highway ever haha.

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01-31-2013, 03:40 AM	#73
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s)	Is the pinion seal an issue? Are they readily available to work with an OEM 4.55 or whatever?

01-31-2013, 02:21 PM	#75
Jive Turkey the tuna, no crust. Join Date: Oct 2012 Drives: 2014 Hachiroku of the year Location: jersey Posts: 2,299 Thanks: 874 Thanked 1,770 Times in 761 Posts Mentioned: 78 Post(s)	looks like i'm going back to trolling lexus forums any idea on year that the 250/300 came with a 4.55? on lexus's website the 2012 250's come with a 4.1..found a few local wrecked ones but all have the 4.1. trying to figure out a way to keep this mod on the more affordable side before i give up and shell out for a cusco any aftermarket lsd's that already have an upgraded drive so we can i can just swap in my driveway?

01-31-2013, 02:44 PM	#76
Calum That Guy Join Date: Dec 2011 Drives: 2013 asphalt FRS MT Location: Halifax, Nova Scotia Posts: 4,865 Thanks: 5,058 Thanked 2,868 Times in 1,499 Posts Mentioned: 82 Post(s)	I just can't stop thinking about this FD change with this power curve.

01-31-2013, 03:15 PM	#77
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s)	UPDATE: I have been looking for a Lexus IS300 or 250 differential to swap in as a way of getting the 4.55 final drive. THEY WILL NOT BOTH WORK. They differ in the way they bolt up. The axles are also different. At this point I am stuck.... Even if I get a unit that bolts up I cannot be sure the axles will fit. Any advice would be appreciated. I don't mind doing the leg work so the community can find a source of parts and even a DIY... But I can't buy both of them on a gamble.

01-31-2013, 06:11 PM	#82
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s)	UPDATE: It was just confirmed that the IS250 DOES NOT come in a 4.55 final drive. I just got off the line with a parts distributor from Lexus and this was the information he gave me. I am still waiting to hear back on if the IS300 has it, but considering I haven't been able to find one anywhere I think we are chasing unicorns here. My guess is that there won't be an easy swap available. I will post back when I here from him again.

01-31-2013, 07:37 PM	#84
TouchMyHonda Vtec Jesus Join Date: Jul 2012 Drives: 13 BRZ, 13 Golf R, 15 Audi S4 Location: LSD Posts: 1,165 Thanks: 623 Thanked 243 Times in 153 Posts Mentioned: 5 Post(s)	Sick tits. I have a 4.785 fd in my 5 speed trans. I sit 5k exact at 80 mph in top gear. With 240whp I never down shift on the highway ever haha.

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