I'm looking to swap my 5th gear, as my RPM is rather high than I want it to be at the speeds I drive on the highway - I want to save some money on gas as the prices are rising and my wage isn't. What would be the best 5th gear, what ratio, and from what transmission & car? TIA! (Were talking b-series transmissions here)

PS. Not sure if this would be the right forum, so if there is a forum where this question belongs - moderators please move it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schurke &raquo;</TD></TR><TR><TD CLASS="quote">I'm looking to swap my 5th gear, as my RPM is rather high than I want it to be at the speeds I drive on the highway - I want to save some money on gas as the prices are rising and my wage isn't. What would be the best 5th gear, what ratio, and from what transmission & car? TIA! (Were talking b-series transmissions here)

PS. Not sure if this would be the right forum, so if there is a forum where this question belongs - moderators please move it.</TD></TR></TABLE>

what tranny do you have? I know u said u have a b-series but a b16 or gsr tranny? Most people just swap in an ls final drive in there b16 or gsr tranny...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egcoupe94 &raquo;</TD></TR><TR><TD CLASS="quote">what tranny do you have? I know u said u have a b-series but a b16 or gsr tranny? Most people just swap in an ls final drive in there b16 or gsr tranny...</TD></TR></TABLE>

a gsr tranny, sorry I didn't clarify. All I'm looking for is the lowest 5th gear ration. Is the LS 5th gear the lowest?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schurke &raquo;</TD></TR><TR><TD CLASS="quote">

a gsr tranny, sorry I didn't clarify. All I'm looking for is the lowest 5th gear ration. Is the LS 5th gear the lowest?</TD></TR></TABLE>


either that or maybe one out of a B20...let me see if I cna find the final gear ratios on both...

 

wat rpm would a b16 tranny b at doing 60mph? in 5th gear?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egcoupe94 &raquo;</TD></TR><TR><TD CLASS="quote">either that or maybe one out of a B20...let me see if I cna find the final gear ratios on both...</TD></TR></TABLE>
Thank you, would you also recommend it for an all motor b18c?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v8 integra &raquo;</TD></TR><TR><TD CLASS="quote">wat rpm would a b16 tranny b at doing 60mph? in 5th gear?</TD></TR></TABLE>

this all depends, did you take it to 60 mph in 2nd then just shift to 5th staying at 5th gear? i think average is like 4200 maybe? thats at 70 mph i thik

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schurke &raquo;</TD></TR><TR><TD CLASS="quote">
Thank you, would you also recommend it for an all motor b18c?</TD></TR></TABLE>


most people do it for turbo applications usually, but I would think it would be fine. I have an h22 tranny in my prelude with the f22 engine. It redlines at 6200 and 5th gear I redline at about 115 mph. which sucks, so I thought about swapping final drives, but just decide to swap the h22 longblock in...Im not going turbo so I really dont care. It would prolly be fine for your b18c, you wont hit 5th gear on the 1/4 mile strip anyways...and all it is is the overdrive for cruising on the interstate

 

http://thebense.livejournal.com/56502.html

 

I don't know if I missed it, but is there the B20 tranny final gear?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Voyage34 &raquo;</TD></TR><TR><TD CLASS="quote">http://thebense.livejournal.com/56502.html</TD></TR></TABLE>

from this site, just doesnth ave the b20 tranny on there...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by other website listed above &raquo;</TD></TR><TR><TD CLASS="quote">
Integra LS (b18b)
1st - 3.230
2nd - 1.900
3rd - 1.269
4th - 0.966
5th - 0.714
final - 4.266

Integra GSR (b18c1)
1st - 3.230
2nd - 1.900
3rd - 1.360
4th - 1.034
5th - 0.787
final - 4.400

Del Sol VTEC, 99-00 Civic Si, and other various JDM cars with b16's (b16a3, b16a2, b16a, b16b, b18c5, b18c spec R) All hydro b16s came with these ratios
Also, USDM ITRs and pre 98 JDM ITRs
1st - 3.230
2nd - 2.105
3rd - 1.458
4th - 1.107
5th - 0.848
final - 4.400

JDM ITR, 98+
1st - 3.230
2nd - 2.105
3rd - 1.458
4th - 1.034
5th - 0.787
final - 4.785
</TD></TR></TABLE>



Modified by egcoupe94 at 11:11 PM 4/17/2006

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schurke &raquo;</TD></TR><TR><TD CLASS="quote">I don't know if I missed it, but is there the B20 tranny final gear? </TD></TR></TABLE>

its not listed on there...im still trying to find it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egcoupe94 &raquo;</TD></TR><TR><TD CLASS="quote">its not listed on there...im still trying to find it</TD></TR></TABLE>
Anyone know what the transmission code for the B20? I'm trying to search as well, but can't find any useful info.

 

damnnnn so if i do 70mph @ 4200rpm..isnt that bad for the engine if i did it for like a half hour on the highway?

 

http://users.ev1.net/~aurelio/crv/facts/index.html

http://www.hondanews.com/CatID...=2001

only thing I could find. (still looking)

and besides, the ls 5th gear is going to be the longest 5th that you can put in there.

nobody swaps the 4.2666 final drive for better cruising. It's not going to make that much of a difference

 

you probably wont find it, but i garentee you its the same 5th as an auto LS tranny if that helps. just PM "bense" hes a cool guy, and will talk trannies with you all day if he has time.

 

I've spent over 20 minutes searching for this on google. I just don't care anymore.

how about someone else find it!

 

Shouldn't this be in a manual (Haynes?). Can someone take a look as I don't have my manual handy at this moment. Thanks!

 

lol i like how he's like "yeah if you guys don't mind researching for me..."

 

i as well spent 20 mins or so searching, point is just swap in the LS 5th and get the next size bigger tires if you have gone down, and call it good. or swap in a whole LS tranny. hell trade your GSR for an LS and cash.

 

LS is the best for commuting, about 3000k@75mph is what i get, and about 40mpg if i dont have a led foot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v8 integra &raquo;</TD></TR><TR><TD CLASS="quote">damnnnn so if i do 70mph @ 4200rpm..isnt that bad for the engine if i did it for like a half hour on the highway?</TD></TR></TABLE>

I cruis at that in my prelude...all the way to TX, 800 miles lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense &raquo;</TD></TR><TR><TD CLASS="quote">lol i like how he's like "yeah if you guys don't mind researching for me..."</TD></TR></TABLE>

You know I'm right here... Sorry about that, I had a really long day away from home and didn't have the resources or time to search.

I just checked on my commute home, the GSR runs ~2,500RPM @ 60mph... with which I am not happy at all with. So my question is... How much of a difference would I see with an LS 5th on the same tires. Currently runing 17s on low profiles - yes i know but i got em for free - so I can't really swap the tires... however, I will be getting a set of 10lb 15s soon. What tire size do you recommend for the 15s? I still want to keep the car low.

(sorry if this is kind of disorganized and hard to read)

EDIT:
egcoupe94, Voyage34, Bense, schardbody - thank you guys for your help, I greatly appreciate it!

EDIT #2:
Oh yeah, and I got a speeding ticket on my way home - makes up for an amazing day!

 

http://www.f-body.org/gears/

ls 5th = 0.714

not worth it unless you're installing a final drive or lsd or BOTH!


axle ratio = final drive ratio


0.787 / 0.714 = 1.1022409 it's a 10% difference in gears, just take 10% out of whatever rpm you're normally at.

if you're at 4000rpm @ 80mph, try 3600rpm with a ls 5th. and even with that said, it's not really worth all the effor unless you're dropping the tranny anyways.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense &raquo;</TD></TR><TR><TD CLASS="quote">http://www.f-body.org/gears/

ls 5th = 0.714

not worth it unless you're installing a final drive or lsd or BOTH!</TD></TR></TABLE>

Actualy, that's why I'm considering swaping the 5th... my 3rd syncro is gridning pretty bad, I have to lower my RPMs to like 2500 in neutral to switch gears without any grind - or sometimes minimal grind. So I have no other option but to unbolt my tranny. It's a JDM GSR B18C so it's already got LSD (???)