Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 03-07-2008, 06:59 PM   #1
GST95
Stock
 
Join Date: Mar 2008
Location: Fuck off
Posts: 11
GST95 is on a distinguished road
Default High RPM shifts, W58 or R154?

I dont own a Toyota, but am considering a few different trannys for a mitsubishi 4g63 powered rwd project. The 2 toyota ones im considering are the W58 or R154.
I cant seem to find the info that I need about these trannys, so I hope you guys can help me out or point me in the right direction.

I dont need to know if it wont or will work. What I need to know is what is the max rpm I will be able to consistantly shift both of these?
I know the R154 is stronger. I read on here that the W58 can hold up to around 400whp, and the R154 ive read different limits from 600-1000. I think either of them will hold the power from what ive read, but the W58 might not last as long.

The engine that will be used will probably be around 300-400hp and rev to 7-8k maybe more.
Do you think either of these trannys will work good with these specs, or should I look at my other options?
If there are any other PROs or CONs to either of these please let me know.

I think I already have a W58 (out of a 84? celica). I would like to be able to use it, but if it wont hold up Ill have to find a R154 or something else. Is there any identification marks on it to verify that it is a W58?

Thank you for your help.
GST95 is offline   Reply With Quote
Old 03-08-2008, 01:41 AM   #2
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

1st off. It's blatant blasphemy what you speak of..

Adding toyota parts to your mits will NOT raise it's value, and you really only disgrace our beloved toyota by bastardizing the 2 seperate entities.

That being said. The r series tranny is what you want.
The redline is at 6k on the w series.

You should expect 7k rpms to be the max revs for safety on these trannies.
And 7k may be pushing it. But if you set it up right.

The r series would do what you want. Not the w.
supramacist is offline   Reply With Quote
Old 03-08-2008, 02:44 AM   #3
GST95
Stock
 
Join Date: Mar 2008
Location: Fuck off
Posts: 11
GST95 is on a distinguished road
Default

This setup will probably not be going into a mitsubishi or toyota. Im just looking at toyota for a possible transmission. I havent even picked a vehicle to put it in yet. Im Looking for something kinda light and rwd, but havent narrowed it down yet. I guess you could say that im doing the project backwards. Most projects start with a car first and build from there. This one starts with the engine, then find a good tranny that likes the engine, then find a shell that the engine/tranny will fit into. Im not brand loyal unless it is the best or most practical option.

The reason im not using a mitsu trans is because of the limited options for rwd (2 versions of basicly the same transmission) and too low of a shift limit, so im trying to find one that will better match the powerband of the engine.(potentally up to 9k or more)

I mean no disrespect to toyota, the people that own them, or anybody on this forum.



Does anybody make upgraded tranny parts for the w series?

What is the shift limit on the r series? Are there any upgrades for it?

Another option that I have is a mazda tranny from a rx7. It will shift at real high rpm since it is setup for a rotary, but I havent looked into its holding power.

please keep the info coming.

Thank you for all the help
__________________
Too many DSM's, not enough time
12.2@115
GST95 is offline   Reply With Quote
Old 03-10-2008, 05:27 PM   #4
GST95
Stock
 
Join Date: Mar 2008
Location: Fuck off
Posts: 11
GST95 is on a distinguished road
Default

Is there a different toyota forum that might have better input on these questions?

Does anybody know any links that will help answer some of these questions?

After a little more research I think the tranny I have is actually a w55.
__________________
Too many DSM's, not enough time
12.2@115
GST95 is offline   Reply With Quote
Old 03-10-2008, 07:06 PM   #5
ravenmaster
12psi boost
 
ravenmaster's Avatar
 
Join Date: Aug 2006
Location: Being not duly informed, I refuse to answer with any degree of accuracy for fear of prevaricating
Posts: 265
ravenmaster is on a distinguished road
Default

First off your question was answered the R154 tranny is a very robust and reliable tranny. It is one of the most heavy duty sport type trannies ever designed by toyota and dare i say it by anyone. So there you go.
__________________
1988 Toyota Supra Turbo Targa
Tokico Illumina II's (TEMS) | Eibach Pro Springs | SpeedTech AntiSway Bars | Cusco Strut Tower Bars | Lexus AFM/550cc Injector Mod | SOGI short shift mod | Aluminum Driveshaft | Upgraded Fuel Pump | 12 PSI Boost | MHG | 11/30/08 Dyno 362RWHP 326ft/lb


Quote:
Originally Posted by supramacist View Post
Ya I'm the a$$hole. I think you're still mad raven cause I thought from your handle that you were a chick. I said I was sorry for that.
ravenmaster is offline   Reply With Quote
Old 03-10-2008, 10:35 PM   #6
SideWinderGX
3" Exhaust
 
Join Date: Feb 2007
Location: Syracuse, NY
Posts: 203
SideWinderGX is on a distinguished road
Default

Quote:
Originally Posted by GST95 View Post
Is there a different toyota forum that might have better input on these questions?

Does anybody know any links that will help answer some of these questions?

After a little more research I think the tranny I have is actually a w55.
you want the R154, overall its a stronger transmission and can take a lot more power than the w58 can.

there is this forum, Supraforums, and SupraMania - Powered by vBulletin. stay between these three forums and youll be fine for all the information that you need.

there were diagrams of a w58 and r154 to tell them apart, but i dont have them bookmarked or know offhand myself...im automatic. ill browse for em, but cant promise ill find them.
__________________
my car:

1987 brownish Toyota Supra Turbo, automatic 7MGTE engine with ~100k miles on it.
SideWinderGX is offline   Reply With Quote
Old 03-10-2008, 10:59 PM   #7
Supra Goddess
Intake
 
Supra Goddess's Avatar
 
Join Date: Feb 2005
Location: Lakewood, WA
Posts: 38
Supra Goddess is on a distinguished road
Default

W55 gear ratios

1st 3.566 2nd2.056 3rd1.384 4th 1 5th 0.850 reverse -4.091



W58 gear ratios

1st 3.285 2nd 1.894 3rd 1.275 4th 1 5th 0.783 reverse -3.768



R154 gear ratios

1st 3.251 2nd 1.955 3rd 1.310 4th 1 5th 0.753 [b]reverse -3.18

Last edited by Supra Goddess; 03-10-2008 at 11:03 PM.
Supra Goddess is offline   Reply With Quote
Old 03-10-2008, 11:26 PM   #8
SideWinderGX
3" Exhaust
 
Join Date: Feb 2007
Location: Syracuse, NY
Posts: 203
SideWinderGX is on a distinguished road
Default

duh, im stupid, its a sticky lol.

http://www.toyota-supra.info/forums/...-w58-r154.html
__________________
my car:

1987 brownish Toyota Supra Turbo, automatic 7MGTE engine with ~100k miles on it.
SideWinderGX is offline   Reply With Quote
Old 03-13-2008, 05:06 AM   #9
GST95
Stock
 
Join Date: Mar 2008
Location: Fuck off
Posts: 11
GST95 is on a distinguished road
Default

Thank you for all the feedback.

My main question hasnt really been fully addressed yet.

I know the r154 is extremely strong, but it is also bigger and heavyer.

The w58 is decently strong and is smaller and lighter.

If I put this setup in a really small car i might not be able to fit a r154 without cutting out and reshaping the tunnel. If it does go into a light car, there will be less strain on the tranny because it is easier to push less weight. So, 400hp in a 3500lb (I dont know what your cars weight) might be max for the w58, but 400hp in a 2000lb car may last for 50k miles.
For that reason I stated in my original post that I dont want to know what will or wont work. If I go with a mid-heavy weight car I know I will need at least a r154, but I am exploring my options right now. I may decide that a 3rd tranny from another make might work better for me than the r154. Im just looking for consistant max rpm shift points right now.
If X tranny can hold 2000hp, but cant shift above 6k rpm it will be useless for what I am trying to build.
I hope this better explains what im trying to figure out here.

The engine that im using has a stock rev limit of 7500. For this project it will be setup for somewhere between 7500 and 9000 depending on many variables.

Will I be able to consistantly shift either of these trannys at this rpm in stock form and if not is there anybody that makes upgraded syncros or anything to help them?

Thank you
__________________
Too many DSM's, not enough time
12.2@115
GST95 is offline   Reply With Quote
Old 03-13-2008, 05:41 AM   #10
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

Kinda thought we answered that.
supramacist is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Headlights only work on High Beam - is it a fuse? t4yl0r10 Non-Generation Specific Questions 8 01-18-2008 03:56 PM
High idle nickvash0104 MKIII Supra 21 07-13-2006 05:14 AM


All times are GMT. The time now is 10:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87