UtahHondas.Net | Home of Utah's Honda and Acura Enthusiasts

On Topic Tech Sections => Transmission/Drivetrain => Topic started by: civhx on July 21, 2009, 07:34:33 PM

Title: Rpm on a b16 tranny?
Post by: civhx on July 21, 2009, 07:34:33 PM
 It seems to me that my b16 tranny feels longer geared than i expected. I have a b16 99 si tranny on with my b16 motor with 15 inch tires, In fifth gear at 80mph i am at about 4200rpm. If i remember right in third gear at 50mph i am at about 4500rpm. Want to see how you guys with a b16 tranny compare.
Title: Re: Rpm on a b16 tranny?
Post by: cf17081 on July 21, 2009, 08:00:03 PM
I have 14 inch honda stockies, and at 80mph I am doing about 4200-4300 rpms..
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 21, 2009, 10:06:44 PM
I have 14 inch honda stockies, and at 80mph I am doing about 4200-4300 rpms..

 Do you know about what rpm in third gear about 50mph?
Title: Re: Rpm on a b16 tranny?
Post by: Omido Style on July 21, 2009, 10:28:34 PM
This link might help:

(http://www.zealautowerks.com/transcalc.php)
Title: Re: Rpm on a b16 tranny?
Post by: RuudDb2 on July 21, 2009, 10:33:44 PM
This link might help:

[url]http://www.zealautowerks.com/transcalc.php[/url] ([url]http://www.zealautowerks.com/transcalc.php[/url])


Fixed for ya!
Title: Re: Rpm on a b16 tranny?
Post by: cf17081 on July 22, 2009, 07:47:33 AM
Do you know about what rpm in third gear about 50mph?


I will check for ya when I drive to work today
Title: Re: Rpm on a b16 tranny?
Post by: dc2801 on July 22, 2009, 04:02:34 PM
in my hatch 5th gear at 80 is about 4200 as well
Title: Re: Rpm on a b16 tranny?
Post by: cf17081 on July 22, 2009, 04:12:04 PM
^ same, I was at about 4200 @ 80mph also
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 22, 2009, 05:44:38 PM
 nice thanks guys. looks like my fifth gear is about the same, now if i can get one of you to do a 50mph roll in third gear so i can compare.
Title: Re: Rpm on a b16 tranny?
Post by: 94_DB8_4dr on July 22, 2009, 06:48:47 PM
nice thanks guys. looks like my fifth gear is about the same, now if i can get one of you to do a 50mph roll in third gear so i can compare.

whats it matter?, if 80 was the same, whats third gonna say?
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 22, 2009, 11:11:10 PM
whats it matter?, if 80 was the same, whats third gonna say?

 Because it is not uncommon for people to change or customize gears in a tranny, and third gear seams to be the one in question. I have had a Ls a gsr and now a B16 and to me the third gear seams to feel really long.
Title: Re: Rpm on a b16 tranny?
Post by: Omido Style on July 23, 2009, 11:44:52 AM
Fixed for ya!

thanks, I just saw that I used img tags and not url's lol.
Title: Re: Rpm on a b16 tranny?
Post by: JDM_EK on July 23, 2009, 04:05:02 PM
yeah 80 MPH is about 4300 as well. I'll try 3rd gear going 50 on my way home bro
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 28, 2009, 05:21:25 PM
anyone get a chance to check third gear at 50 mph?
Title: Re: Rpm on a b16 tranny?
Post by: cf17081 on July 28, 2009, 06:24:58 PM
anyone get a chance to check third gear at 50 mph?

i will do it on my way home in an hour.
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 29, 2009, 05:32:53 PM
i will do it on my way home in an hour.


 Get a chance to make a pass?
Title: Re: Rpm on a b16 tranny?
Post by: cf17081 on July 29, 2009, 05:36:03 PM
Yeah, it was like 4600-4800 ish i believe.
Title: Re: Rpm on a b16 tranny?
Post by: 94_DB8_4dr on July 29, 2009, 08:27:27 PM
Because it is not uncommon for people to change or customize gears in a tranny, and third gear seams to be the one in question. I have had a Ls a gsr and now a B16 and to me the third gear seams to feel really long.


only those that are seriously racing on the track would be doin that type of thing.. the only comon 1 most street rats do is change out the 5th gear to ls or gsr. now i aint tryin to be rude, jus pointin it out.ill betcha not 1 person on here that has a daily with a b16 has changed any other gear besides 5th.
Title: Re: Rpm on a b16 tranny?
Post by: civhx on July 30, 2009, 11:15:48 AM


only those that are seriously racing on the track would be doin that type of thing.. the only comon 1 most street rats do is change out the 5th gear to ls or gsr. now i aint tryin to be rude, jus pointin it out.ill betcha not 1 person on here that has a daily with a b16 has changed any other gear besides 5th.

 Its all good bro, no offense taken.

 I absolutely agree that fifth is the most common swapped gear and agree that in most cases Third gear swaps would not make too much sense, My only issue is i was told by the tuner that third gear felt very long and it was not the first person to make a comment about third. I also feel like third gear seems to feel longer than i anticipated a b16 to feel.
 Now cf17081 tells me his third gear run at 50mph is about 4600 to 4800 tells me there is a possibilty that there might be a diff.
 Any one with 15s with a b16 tranny that would be so kind, feel free to give me a rpm range.
Title: Re: Rpm on a b16 tranny?
Post by: JDM_EK on August 01, 2009, 03:26:09 PM
I'm getting mine running again this weekend. I will post a pic for you maybe tomorrow or Monday for sure. I'll take pix of 3rd at 50 MPH and 5th at 80 MPH.
Title: Re: Rpm on a b16 tranny?
Post by: Omido Style on August 02, 2009, 12:39:12 AM
Man, I'm not trying to be rude, but you could have found your answer a long time ago with that link I posted.

B16 (Y21,S21,S4C) -
3rd gear @ 50 mph = 4672 rpm
5th gear @ 50 mph = 2717 rpm

GSR (S80,Y80) -
3rd gear @ 50 mph = 4358 rpm
5th gear @ 50 mph = 2522 rpm

LS (S80) -
3rd gear @ 50 mph = 3942
5th gear @ 50 mph = 2218

All those are on 205/50/15 tires, and keep in mind, most stock clusters are off about 100-200 rpm.
Title: Re: Rpm on a b16 tranny?
Post by: civhx on August 02, 2009, 07:21:08 AM
Man, I'm not trying to be rude, but you could have found your answer a long time ago with that link I posted.

B16 (Y21,S21,S4C) -
3rd gear @ 50 mph = 4672 rpm
5th gear @ 50 mph = 2717 rpm

GSR (S80,Y80) -
3rd gear @ 50 mph = 4358 rpm
5th gear @ 50 mph = 2522 rpm

LS (S80) -
3rd gear @ 50 mph = 3942
5th gear @ 50 mph = 2218

All those are on 205/50/15 tires, and keep in mind, most stock clusters are off about 100-200 rpm.

 Thanks bro.
Title: Re: Rpm on a b16 tranny?
Post by: JDM_EK on August 12, 2009, 10:08:28 AM
Hey i managed to get pictures of my drive home yesterday. I'll upload em today when i have a chance
Title: Re: Rpm on a b16 tranny?
Post by: JDM_EK on August 12, 2009, 06:42:48 PM
This is 80 MPH on 5th gear. Its about 4200-43000 ish
(http://i214.photobucket.com/albums/cc302/Jovany_Gaspar/IMAG0176.jpg)

This is 3rd hear going 50 MPH. Hope this helps!
(http://i214.photobucket.com/albums/cc302/Jovany_Gaspar/IMAG0175.jpg)

Title: Re: Rpm on a b16 tranny?
Post by: civhx on August 13, 2009, 05:12:12 PM
thanks guys. Think i got this figured out, For some reason this tranny does not feel as short as i was expecting but could just be i am reving alot higher now too.
Title: Re: Rpm on a b16 tranny?
Post by: JDM_EK on August 13, 2009, 10:02:19 PM
No prob
Title: Re: Rpm on a b16 tranny?
Post by: HERRERRERA MAN OF UTAH on August 16, 2009, 01:09:33 PM
http://www.teammfactory.com/gearcalculator.php?kmh=0&tirewidth=195&tireprofile=85&wheelsize=13&tirediameter1=26.05&maxrpm1=11500&finaldrive1=4.4&gearratio1=3.23&gearratio2=1.9&gearratio3=1.36&gearratio4=1.034&gearratio5=0.787&gearratio6=0&trannytype=&tranny=Calculate+Transmission+1&tirewidth2=195&tireprofile2=85&wheelsize2=13&tirediameter2=26.05&maxrpm2=8400&finaldrive2=4.4&gearratioa=3.23&gearratiob=2.105&gearratioc=1.458&gearratiod=1.107&gearratioe=0.848&gearratiof=0&trannytype= (http://www.teammfactory.com/gearcalculator.php?kmh=0&tirewidth=195&tireprofile=85&wheelsize=13&tirediameter1=26.05&maxrpm1=11500&finaldrive1=4.4&gearratio1=3.23&gearratio2=1.9&gearratio3=1.36&gearratio4=1.034&gearratio5=0.787&gearratio6=0&trannytype=&tranny=Calculate+Transmission+1&tirewidth2=195&tireprofile2=85&wheelsize2=13&tirediameter2=26.05&maxrpm2=8400&finaldrive2=4.4&gearratioa=3.23&gearratiob=2.105&gearratioc=1.458&gearratiod=1.107&gearratioe=0.848&gearratiof=0&trannytype=)
Title: Re: Rpm on a b16 tranny?
Post by: Minion on November 15, 2009, 11:33:49 AM
i think the issue is that it's a b16 on a b16 trans right??? yeah, that'll feel like those gears are hella long. 1 it revs to 8k. 2 it's a pussy of a motor any how. torque-less from what i've experienced. put an ls stroke on that trans and it's a completely different feel. i'm using an ls on b16 trans and it mobs on b16 on b16 trans and revs out sooner at 7k.
Title: Re: Rpm on a b16 tranny?
Post by: unified11 on November 16, 2009, 12:36:09 PM
Yeah is a B16 block with a B16 trans.. Though its built.  197whp and I believe 117wtq redlining at 9500rpm.

But yea, the redline is pretty damn high, without having gobs of torque to pull it through as fast as a b18 would.  I think thats where the 'feel' comes into play.  He went from an LS (LS trans), to a B17 (LS trans), to a B16 with B16 trans.. Lost alot of torque and now with the B16 trans, it just is a different world.
Title: Re: Rpm on a b16 tranny?
Post by: Minion on November 16, 2009, 12:38:43 PM
so get rid of the b16 block then. and you'll love your b16 trans i think.
Title: Re: Rpm on a b16 tranny?
Post by: unified11 on November 16, 2009, 12:46:27 PM
The next build will be a B18 I'm sure.  As for getting rid of this one, not so soon.. It was just barely finished like a month or two ago.  Nearly 200whp on an 81mm B16?  Impressive build.
Title: Re: Rpm on a b16 tranny?
Post by: Daviticus on November 16, 2009, 12:48:18 PM
Needs an ITR trans with a 4.9 final drive and a Quaife, and it'll be a menace on the track.
Title: Re: Rpm on a b16 tranny?
Post by: unified11 on November 16, 2009, 12:50:52 PM
True that.. We've been looking into an OEM ITR final drive for the trans.  It makes a big difference I take it?  I'm lost as far as trannies and gearing go.. dont know a whole lot about it.
Title: Re: Rpm on a b16 tranny?
Post by: Daviticus on November 16, 2009, 01:03:00 PM
When you've got a powerplant that has such a high-rpm powerband, the way to make best use of it is to keep it in the higher revs, that's where gearing comes in.