User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-24-2020, 03:59 PM #1
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Axle Gear Ratio's

1998 SR5, 3.4L, 5 spd manual

Currently I'm running 4.10 gears and 265/70R16 (30.61") tires.
The reason I looked into gears is because first and second gears in my rig seem a little high. Second gear will lug below about 1500rpm if your not easy on the throttle, and first will do the same if you get into it. Second gear is too high for low speed stuff like round-a-bouts, parking lots, rolling through stops, ect. All those maneuvers where your almost idling in second but going too fast to want to drop into first. When towing speed bumps, round-a-bouts, parking lots, ect. are a first gear affair.

Just like everyone tire size will go up, not down. I don't plan to exceed 33".
My rig is a daily driver and I don't rock crawl or anything like that. Just hunting, fishing, and camping.

I ran the numbers and thought others might be interested. I validated the calculator by comparing to my current actuals. It was spot on.
Gear Ratio Calculator

Conclusion:
4.56 with 32.24" tires will match factory ratios for 4.10's and 28.29" tires.
4.56 with my current 30.61" tires will have me running 3K at 70mph (doable).
4.88's would need 33"+ tires to match factory ratios.
4.56 seems like the ticket for the 5 speed manual V6 combo with 32-33" tires.

Door sticker tire size Target tire size
225/75R15 (28.29)4.10 275/75R16 (32.24) 4.56
Road speed at given RPM in miles per hour
Gear 1500 2000 3000
1 8 11 16
2 15 20 31
3 22 29 44
4 32 42 63
5 38 50 75
R 7 10 15

current tire size
265/70R16 (30.61) 4.10
285/75R16 (32.83) 4.30
Road speed at given RPM in miles per hour
Gear 1500 2000 3000
1 9 12 18
2 17 22 33
3 24 32 47
4 34 46 68
5 41 54 81
R 8 11 16

265/70R16 (30.61) 4.56 285/75R16 (32.83) 4.88
Road speed at given RPM in miles per hour
Gear 1500 2000 3000
1 8 10 16
2 15 19 29
3 21 28 42
4 30 40 60
5 36 48 71
R 7 9 14

265/70R16 (30.61) 4.30 285/75R16 (32.83) 4.56
Road speed at given RPM in miles per hour
Gear 1500 2000 3000
1 8 11 17
2 15 21 31
3 22 29 44
4 32 42 64
5 38 50 76
R 8 10 15
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 04:18 PM #2
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
You need to completely ignore the door sticker for OEM tire size. You likely had a 16" wheel truck (265/70-16 tires) despite what the door sticker says. It was very rare for 4WD's to come with the 225/75-15 OEM tires.

Parking lots are always a balancing act between 1st and 2nd with every manual trans vehicle I have owned...

-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'16 Honda Odyssey
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
phattyduck is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 04:38 PM #3
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Wouldn't the door sticker indicate the factory engineered setup for the vehicle?
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 06:51 PM #4
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
Quote:
Originally Posted by Dieselchessy View Post
Wouldn't the door sticker indicate the factory engineered setup for the vehicle?
You'd think, but not in this case. My '97 parts truck had the 15" wheel info on the sticker and was a 16" wheel truck. Even looking up the vehicle information on the public-facing Toyota website shows 15" wheels for that truck - Vehicle Specification | Toyota Owners (it is hidden in one of the packages that the truck had). The only place to find that the truck really did have 16" wheels from the factory would have been an original window sticker or a VIN lookup on the TIS system.

If you still have stock brakes, you can check the diameter of your front rotors to check if you have a 15" or 16" wheel truck. 318mm (12.5") = 16" wheels, 297mm (11.7") = 15" wheels.

As another data point, normal V6 auto 4WD trucks (4.10 gears) reach 2000 RPM in top gear (OD) around 65mph. You are already spinning higher than that with your current setup... (normal for Toyota manual trans vehicles of that era)

-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'16 Honda Odyssey
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
phattyduck is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 07:51 PM #5
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Regardless of door stickers and factory/dealer options I'm thinking lower gears are going on my list of future mods and 4.56 will likely be the ratio.
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 08:49 PM #6
Rolling_Thunder Rolling_Thunder is offline
Member
 
Join Date: Feb 2017
Posts: 109
Rolling_Thunder is on a distinguished road
Rolling_Thunder Rolling_Thunder is offline
Member
 
Join Date: Feb 2017
Posts: 109
Rolling_Thunder is on a distinguished road
I am literally running the same set up - 5 speed, 4.10s, and 265/70/16s

My truck runs just fine - very little lugging unless I am say in 3rd gear at 1000rpm and trying to accelerate. I did the 5 speed swap and decided to keep the 4.10s because they worked so well with the set up - I averages 23mpg on my recent cross country trip carrying about 600lbs of crap with me -

I wonder why your set up seems more tempermental than mine
Rolling_Thunder is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 09:37 PM #7
JZiggy's Avatar
JZiggy JZiggy is offline
Senior Member
 
Join Date: Oct 2016
Location: Atlanta
Posts: 1,583
JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold
JZiggy JZiggy is offline
Senior Member
JZiggy's Avatar
 
Join Date: Oct 2016
Location: Atlanta
Posts: 1,583
JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold
Unless you're planning on 33" tires I'd stay below 4.56. My truck is geared 4.56 with 265/75R16 tires and a 5speed BUT I am a 3RZ. This setup is even a shade overgeared -- but I prefer that to being undergeared. The 265/70R16 and 4.10 combo tends to work well with most rigs especially the 3.4L that has a decent increase in torque and HP over the 2.7L.
JZiggy is offline   Reply With QuoteReply With Quote
Old 01-24-2020, 10:10 PM #8
gamefreakgc's Avatar
gamefreakgc gamefreakgc is offline
Elite Member
 
Join Date: Oct 2014
Location: Citrus Heights, California
Posts: 6,277
Real Name: Jerod
gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold
gamefreakgc gamefreakgc is offline
Elite Member
gamefreakgc's Avatar
 
Join Date: Oct 2014
Location: Citrus Heights, California
Posts: 6,277
Real Name: Jerod
gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold gamefreakgc is a splendid one to behold
You might want to also run those calculators at whatever speed you top out on in your area on the highway. For me, that's around 70 MPH. That's around 2200 RPM with the 4-speed auto, with 4.56's it's around 2500 RPM and with 4.88's it's pushing 2700 RPM. The question should be, can you tolerate the engine or exhaust note of your vehicle cruising at highway speed on a long road trip? My last Toyota was overgeared for the tires it had and spun at around 3000 RPM in 5th on the highway, it got a bit noisy.

I also think the gearing is too much, but on my auto. 1st gear on the 5-speed or something close is what I'm after. Having it re-geared is pricey though so not on the table right now.
__________________
'98 4Runner SR5 - 4x4 JDM 5VZ-FE Supercharged - 233K miles.
326WHP 347TQ

AEM F/IC 6, 11 PSI, 3" Intake and 3" Exhaust
Jerod's Supercharged T[u]RD Build
gamefreakgc is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 01:16 AM #9
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Quote:
Originally Posted by Rolling_Thunder View Post
I am literally running the same set up - 5 speed, 4.10s, and 265/70/16s

My truck runs just fine - very little lugging unless I am say in 3rd gear at 1000rpm and trying to accelerate. I did the 5 speed swap and decided to keep the 4.10s because they worked so well with the set up - I averages 23mpg on my recent cross country trip carrying about 600lbs of crap with me -

I wonder why your set up seems more tempermental than mine
Never seen 23mpg with a v6 3rd gen. I get 17 to 18 pretty well every tank on all 3 Iíve owned.

Your rig doesnít ping if you get into the throttle below 1400 rpm in all gears but first?

Iíve got to run first up to 3k before shifting, drops to 1500 in second, unless Iím going real easy.
If I shift at 2500 rpm then it will ping unless I baby second up till 1400rpm or so.

Iíve owned 2 of these v6 5spd and per memory they both acted this way, though this one may be worse.

Acts a bit like the timing is too advanced.
Real peppy in all gears. Makes the auto tranny rigs feel like slugs.

Itís done this through;
2 engines
Replaced injectors
Throttle body
Throttle position sensor
Fuel filter
Plugs (dual electrode)
Wires
Coil packs

Things I havenít addressed:
Fuel pump
O2 sensor
MAF (Iíve cleaned it)
???
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 02:37 AM #10
rallypoint_1's Avatar
rallypoint_1 rallypoint_1 is offline
Member
 
Join Date: Jul 2015
Location: SoCal-Pasadena
Age: 50
Posts: 401
Real Name: Bill
rallypoint_1 is on a distinguished road
rallypoint_1 rallypoint_1 is offline
Member
rallypoint_1's Avatar
 
Join Date: Jul 2015
Location: SoCal-Pasadena
Age: 50
Posts: 401
Real Name: Bill
rallypoint_1 is on a distinguished road
Running 4.56ís on V6 AT with 31ísĒ 70 mph is about 3k rpm. Not really screaming but definitely higher than the 3.73 gears. Love it!!!
__________________
1998 T4R SR5 V6 2wd Evergreen Pearl OME 880 Toytec 1/4" spacer OME 906w/OME20mm(10mmx2)spacers Bilstein 5100 BFG KO2 31's Satoshi mod 1.5" BL(Fat Pats)

My 4Runner build:
http://www.toyota-4runner.org/3rd-ge...8-sr5-2wd.html
rallypoint_1 is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 10:54 AM #11
19963.4lsr5 19963.4lsr5 is offline
Senior Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 4,157
19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light
19963.4lsr5 19963.4lsr5 is offline
Senior Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 4,157
19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light 19963.4lsr5 is a glorious beacon of light
It my be time to run some combustion cleaner through it.

You either have carbon buildup causing hot spots or you have a injector not flowing properly and itís leaning out causing the pinging.


Sent from my iPhone using Tapatalk
19963.4lsr5 is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 11:44 AM #12
JZiggy's Avatar
JZiggy JZiggy is offline
Senior Member
 
Join Date: Oct 2016
Location: Atlanta
Posts: 1,583
JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold
JZiggy JZiggy is offline
Senior Member
JZiggy's Avatar
 
Join Date: Oct 2016
Location: Atlanta
Posts: 1,583
JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold JZiggy is a splendid one to behold
Properly running rigs shouldn’t ping above like 800rpm. Maybe if it was a Honda...
JZiggy is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 02:10 PM #13
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Iíll keep working through the laundry list of maintenance items. Iíve got to catch up with 200k of me not owning it.

Have a new Denso o2 sensor I
need to install. Current readings look decent, will be interested to see how the new one reads.
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-25-2020, 11:55 PM #14
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 595
Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about Dieselchessy has a spectacular aura about
New O2 sensor is in. Old one didnít look that old and was a Toyota unit. New one is a Denso. The readings seem to jump around a bit more with the new one and maybe the high and low are more extreme.
Ran it about 30 miles and it seems to run about the same.
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 01-27-2020, 02:10 PM #15
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
phattyduck phattyduck is offline
Senior Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 3,884
phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of phattyduck has much to be proud of
Quote:
Originally Posted by Dieselchessy View Post
Never seen 23mpg with a v6 3rd gen. I get 17 to 18 pretty well every tank on all 3 Iíve owned.

Your rig doesnít ping if you get into the throttle below 1400 rpm in all gears but first?

Iíve got to run first up to 3k before shifting, drops to 1500 in second, unless Iím going real easy.
If I shift at 2500 rpm then it will ping unless I baby second up till 1400rpm or so.

Iíve owned 2 of these v6 5spd and per memory they both acted this way, though this one may be worse.

Acts a bit like the timing is too advanced.
Real peppy in all gears. Makes the auto tranny rigs feel like slugs.
How many manual trans vehicles have you owned? I haven't owned one yet that doesn't want to be above at least 1800 rpm when accelerating. Stop lugging that thing around.

The auto will downshift if you get on the gas and will keep RPMs above 2k while accelerating. Even cruising, it is hard to get the ECU to shift down to 1500 rpm unless you are coasting. You should be doing the same with the 5-speed. Stop treating it like a diesel engine (assuming that's where you get your user name?). Gas engines need RPMs to work well - keep it above 1800 RPMs unless you are coasting to a stop (and yes, that means going above 3k rpm in 1st fairly regularly!).

Also, the knock sensor is ignored below something like 3k rpm. The engine still shouldn't be pinging down there though (well, without a supercharger). You might have carbon'd up cylinders or something. Try running 89 or 91 octane and see if the pinging goes away, then figure out how to solve the issue.

-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'16 Honda Odyssey
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
phattyduck is offline   Reply With QuoteReply With Quote
Reply

Tags
gear , size , speed , tire , tires

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Re-gear to what ratio? robbymartin 5th gen T4Rs 9 09-17-2018 06:38 PM
gear ratio Daniel0013 3rd gen T4Rs 6 09-24-2013 01:15 PM
4th gen gear ratio Falls 4th Gen T4Rs 9 03-01-2008 11:20 AM
Rear Axle 91 T4R 'Third Member' gear ratio scudsrus Classic T4Rs 4 11-02-2007 08:30 PM
gear ratio 4runnerhyde 4th Gen T4Rs 1 08-31-2006 01:19 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:27 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020