The unofficial resource center for Mustang owners and enthusiasts
Ford Mustang Forums - Ford Mustang Classifieds - MustangForums.com Photo Galleries - MustangForums.com Chat Room - Create an Account - Mustang News


Go Back   MustangForums.com > Ford Mustang Tech > 6 Cyl (V6) Applications
Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
Thread Tools Search this Thread
Old 07-20-2009, 01:09 AM   #1
tranceaddict
1st Gear Member
2004 Ford Mustang
 
Join Date: Jul 2009
Vehicle: 2004, ford, mustang v6
Location: illinois
Posts: 126
Default what is a safe rev limit on the 3.8

Im looking at getting a handheld tuner and a cai soon. So what is safe to set the rev limit to on this engine. i want it to be higher than the 5500 but i dont want to blow the engine up lol.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
tranceaddict is offline   Reply With Quote
Old 07-20-2009, 01:21 AM   #2
tohoopty
3rd Gear Member
 
tohoopty's Avatar
 
Join Date: Sep 2008
Vehicle: 1987 coupe
Location: point pleasant,west virginia
Posts: 501
Default

i had a 93 thunderbird with a 3.8 and it would turn 6500.id just keep it at 5500 if it was me.ive also blow up 3 of them.they dont like high rpms for a long time.
tohoopty is offline   Reply With Quote
Old 07-20-2009, 02:14 AM   #3
tranceaddict
1st Gear Member
2004 Ford Mustang
 
Join Date: Jul 2009
Vehicle: 2004, ford, mustang v6
Location: illinois
Posts: 126
Default

ive seen new edges shifting at 6500 i'd like a redline around there. 5,500 just comes up so quick
tranceaddict is offline   Reply With Quote
Old 07-20-2009, 02:20 AM   #4
TurtleSLow
3rd Gear Member
2000 Ford F-350
My Garage
 
Join Date: Apr 2008
Location:
Posts: 685
Default

if your stock you shouldnt be running up past 5300 anyways, the powerband is not up there, stock dynos show the hp drop off at around ~5k so thats when you should shift. but if you really wanna be up that high set the limiter at 6k
__________________

LT's, o/r h, flow 40's exhaust clip http://www.youtube.com/watch?v=Y8cSdoJBST4
14.607 @ 94.52 2.185 60ft crappy street tires
TurtleSLow is offline   Reply With Quote
Old 07-20-2009, 02:23 AM   #5
tranceaddict
1st Gear Member
2004 Ford Mustang
 
Join Date: Jul 2009
Vehicle: 2004, ford, mustang v6
Location: illinois
Posts: 126
Default

Quote:
Originally Posted by TurtleSLow View Post
if your stock you shouldnt be running up past 5300 anyways, the powerband is not up there, stock dynos show the hp drop off at around ~5k so thats when you should shift. but if you really wanna be up that high set the limiter at 6k
yeah good point. what mods would i need to continue making power that high? im looking into 3.73 or 4.10 gears, cai w/handheld tuner. Exhaust headers all the way back. would that be enough. I really want to get a supercharger but im not sure what would fit the v6 and i really dont have the funds at the moment
tranceaddict is offline   Reply With Quote
Old 07-20-2009, 06:25 PM   #6
LilRoush
5th Gear Member
2000 Ford Mustang
 
LilRoush's Avatar
 
Join Date: Feb 2007
Vehicle: 2000 Roush
Location: South FL
Posts: 4,293
Send a message via AIM to LilRoush
Default

You need head/valve train work to need a higher rev limit than stock.
__________________
~Matt
Race car: 2000 Roush #5004
Shark hauler: 2001 Explorer Sport 4.0L
Show car: 1970 Mach 1 351
LilRoush is offline   Reply With Quote
Old 07-21-2009, 05:53 AM   #7
NeoTokyo
5th Gear Member
 
Join Date: Dec 2003
Location: Sacramento, CA
Posts: 3,162
Send a message via AIM to NeoTokyo Send a message via Yahoo to NeoTokyo
Default

Porting brought my power band up a little higher than the stock toppout at about 4950rpms.

As for redlines, what you have to worry about are the lifters. I have heard of people having them fail at just 5400rpms and some say they are good for 6400rpms.

I have my rev limiter set to 5200rpms because even though my power band was raised a little, its not raised that much and I wont want to hurt my engine for 3 more peak ponies.

-Eric-
__________________
95' Mustang Mach 1 281 manual - Penny -
Slightly Modded 4.6L / 5.3L ModStroker
RAM King Cobra Super Duty Clutch
White Ext. Charcoal Mach 1 Int.
Mach1 Shaker, badging/Clone
18"x10.5" Y2K Cobra R's

96' Mustang 00' Swap - NoName -
NeoTokyo is offline   Reply With Quote
Old 07-21-2009, 05:57 AM   #8
NeoTokyo
5th Gear Member
 
Join Date: Dec 2003
Location: Sacramento, CA
Posts: 3,162
Send a message via AIM to NeoTokyo Send a message via Yahoo to NeoTokyo
Default

I worked too hard on the damn thing to blow it up trying to match those little honda boys doing 6 - 7 - 8000rpms. There are a couple STOCK honda engines out there that have a redline over 8000rpms. Dont need to even think about going there in my car.

Rpms dont mean crap if you dont have the power there. Say your peak power is at 5500rpms but you are rated for 7500rpm redline, well in those 2000rpms you could possibly drop half of your peak horsepower off.

Horsepower does not stay constant after you hit your peak potential.
__________________
95' Mustang Mach 1 281 manual - Penny -
Slightly Modded 4.6L / 5.3L ModStroker
RAM King Cobra Super Duty Clutch
White Ext. Charcoal Mach 1 Int.
Mach1 Shaker, badging/Clone
18"x10.5" Y2K Cobra R's

96' Mustang 00' Swap - NoName -
NeoTokyo is offline   Reply With Quote
Old 07-21-2009, 05:59 AM   #9
NeoTokyo
5th Gear Member
 
Join Date: Dec 2003
Location: Sacramento, CA
Posts: 3,162
Send a message via AIM to NeoTokyo Send a message via Yahoo to NeoTokyo
Default

Not unless you peg the dyno!

__________________
95' Mustang Mach 1 281 manual - Penny -
Slightly Modded 4.6L / 5.3L ModStroker
RAM King Cobra Super Duty Clutch
White Ext. Charcoal Mach 1 Int.
Mach1 Shaker, badging/Clone
18"x10.5" Y2K Cobra R's

96' Mustang 00' Swap - NoName -

Last edited by NeoTokyo; 07-21-2009 at 06:01 AM.
NeoTokyo is offline   Reply With Quote
Old 07-21-2009, 06:52 AM   #10
Shaunmac9128
5th Gear Member
2001 Ford Mustang
 
Join Date: Nov 2008
Vehicle: 2001, Mustang, V6 Convertible
Location: RI
Posts: 2,484
Default

If you want a 7 or 8k powerband go buy a civic. Why would you want to rev past where you have peak power?
__________________

16.17 @ 86.19mph 2.35 60'
Shaunmac9128 is offline   Reply With Quote



Reply



Tags
1996, 2001, 38, 40l, ford, limit, limiter, mach, mustang, quick, rev, safe

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Advertising

Featured Sponsors
New Sponsors
All times are GMT -5. The time now is 07:54 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company