Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > 3rd Gen Honda Prelude

Thread Title
Lower rpm

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 03-02-2015, 05:28 PM
Junior Member
 
Join Date: Mar 2014
Posts: 90
iTrader: (0)
nwnate is on a distinguished road
Lower rpm

So just picked up a 89 si the other day, B20A5.
On the freeway at 60 mph I'm already at 3k rpm.
What can I do if anything to change that. Meaning lower the rmps.
Still new to the car game so still learning.
Reply With Quote
  #2 (permalink)  
Old 03-02-2015, 05:45 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Lower rpm

The only way to change that would be to change the final gear ratio. The easiest way to do that is to install larger tires. But keep in mind that this will affect your speedometer. And you would have to go ridiculously big in order to make much of a difference. Then you would have other issues (weight, performance, clearance, looks).

Another way would be to change the gearing inside the transmission. There have been members who have done this, but it's not a simple thing to do. Apparently the 5th gear from an Accord can be swapped into the d2a4 transmission (90/91 models), but I haven't heard of anyone finding a gear that will work in the d2j3 that your 89 probably has.

But in the end, why do you want to do this? This is how these cars were designed to perform. If you're worried about fuel economy, you should be getting close to 30 mpg highway with your 89. If you aren't it's because of other reasons. I get just over 28 mpg combined city/hwy with my 89.
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #3 (permalink)  
Old 03-02-2015, 06:56 PM
Junior Member
 
Join Date: Mar 2014
Posts: 90
iTrader: (0)
nwnate is on a distinguished road
Re: Lower rpm

I was just wondering because I'm not used to that, like I said still new. But thanks for the info. And now Iv had it a couple days I'm starting to get used to it and do kinda like it
Reply With Quote
  #4 (permalink)  
Old 03-02-2015, 06:59 PM
Platinum Member
 
Join Date: Feb 2010
Location: Fayetteville, Ga.
Posts: 1,274
iTrader: (0)
Lespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond repute
Re: Lower rpm

That rpm is correct. The 90 lude I have does 2800 rpms at 60 only cause it's an automatic. Look at the redline rpm's. You'll be fine. T he 91 5-speed lude I have with stock size tires gets 3000 rpm's at 60.

Last edited by Lespaul59; 03-04-2015 at 10:58 PM.
Reply With Quote
  #5 (permalink)  
Old 03-04-2015, 10:27 AM
emathew's Avatar
Gold Member
 
Join Date: Oct 2014
Location: In my 'Lude
Posts: 715
iTrader: (0)
emathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud ofemathew has much to be proud of
Re: Lower rpm

Quote:
Originally Posted by Lespaul59 View Post
That rpm is correct. The 90 lude I have does 2800 rpms at 60 only cause it's an automatic. Look at the redline rpm's. You'll be fine. T he 01 5-speed lude I have with stock size tires gets 3000 rpm's at 60.
I second that
__________________
Resuscitate.

Reply With Quote
  #6 (permalink)  
Old 03-04-2015, 11:42 AM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,114
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: Lower rpm

It's definitely something to get used to when you're used to the rpm's being much lower in the typical modern day autombile.

All the noise drove me nuts at first...and having a passenger ask "you gonna change gears, or what?" at times took some getting used to...for them because they'd never experienced pinto's or the honda cvcc cars of days gone by where the car wouldn't get out of it's own way at less than 3000+ rpms in each gear.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 03-04-2015 at 11:54 AM.
Reply With Quote
  #7 (permalink)  
Old 03-04-2015, 12:39 PM
tonemeister69's Avatar
Gold Member

 
Join Date: Apr 2014
Location: Houston Texas
Posts: 827
iTrader: (3)
tonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond repute
Re: Lower rpm

Yeah, driving a Prelude is like driving a Hotrod with 4:10 gears, but only 4 cylinders...
__________________
1989 Honda Prelude Si - Daily Driver (So far, So Good)
1970 Buick GSX Clone - In progress
1988 Chevy Suburban TravelQuest - WorkHorse
1978 Buick Skylark - Sold

"Tackling Those Gremlins One By One"

"If you were as smart as you are dumb, you'd be Einstein!"

"Keep The Shiny Side Up & The Dirty Side Down"
Reply With Quote
  #8 (permalink)  
Old 03-08-2015, 04:37 PM
Junior Member
 
Join Date: Mar 2014
Posts: 90
iTrader: (0)
nwnate is on a distinguished road
Re: Lower rpm

I'm usually shift at 3000, should I wait a little longer in these cars?
When do you guys shift when driving normal speeds?
Reply With Quote
  #9 (permalink)  
Old 03-08-2015, 05:55 PM
Platinum Member
 
Join Date: Feb 2010
Location: Fayetteville, Ga.
Posts: 1,274
iTrader: (0)
Lespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond repute
Re: Lower rpm

3000 IS ABOUT RIGHT FOR ME!
Reply With Quote
  #10 (permalink)  
Old 03-08-2015, 06:10 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Lower rpm

Quote:
Originally Posted by nwnate View Post
I'm usually shift at 3000, should I wait a little longer in these cars?
When do you guys shift when driving normal speeds?
It depends on the car. In my 3rd gen, for normal acceleration I shift around 4000 to 4500. Spirited acceleration is more like 5500 to 6000. I only shift at 3000 if there are cops around and I'm trying not to draw attention.
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #11 (permalink)  
Old 03-08-2015, 07:00 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,114
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: Lower rpm

2500-3500 here...depending on which gear...unless trying to pass a vehicle on a hill and need some @$$ in the next gear..then it's 4500+.

B21 no likey red line stuff.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 03-08-2015 at 07:03 PM.
Reply With Quote
  #12 (permalink)  
Old 03-09-2015, 11:44 AM
tonemeister69's Avatar
Gold Member

 
Join Date: Apr 2014
Location: Houston Texas
Posts: 827
iTrader: (3)
tonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond reputetonemeister69 has a reputation beyond repute
Re: Lower rpm

I usually shift right around 4k.
__________________
1989 Honda Prelude Si - Daily Driver (So far, So Good)
1970 Buick GSX Clone - In progress
1988 Chevy Suburban TravelQuest - WorkHorse
1978 Buick Skylark - Sold

"Tackling Those Gremlins One By One"

"If you were as smart as you are dumb, you'd be Einstein!"

"Keep The Shiny Side Up & The Dirty Side Down"
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
lower? Twisniewski11 5th Gen Honda Prelude 26 02-17-2011 10:22 PM
Should I Lower?? Phx_Kobra 5th Gen Honda Prelude 18 01-05-2011 07:21 PM
Can't go lower... :/ Twisty55 5th Gen Honda Prelude 0 10-08-2010 10:37 AM
REAR LOWER BALL JOINT THE SAME AS THE FRONT LOWER BALL JOINT?? starbai 4th Gen Honda Prelude 7 09-24-2008 01:34 PM
need to lower my 5th gen sh vabapesta Stance 1 10-11-2007 09:49 AM


All times are GMT -4. The time now is 10:53 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.