Transmission Ratios & MPH Per Gear - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus Tech Discussions > Engine & Transmission Swap

Engine & Transmission Swap The place to chat about any engine and transmission swap.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 10-13-2007, 07:19 PM   #1
10/10ths FOCUS
Focus Rookie
 
Join Date: Sep 2007
Fan#: 50307
Location: CT
What I Drive: 05 Mustang GT, Racing Focus Soon

Posts: 16
FF Reputation: 1 10/10ths FOCUS Good Standing Member
Buy-Sell-Trade Rating: (0)
Transmission Ratios & MPH Per Gear

Tried a search but can't seem to find.

Need info to gear a race car for a 1/2 mile circle track.

Top speed will be close to 100mph with corner speeds about 70mph. Max rpm about 7500+.

Must be able to stay in one gear. I will assume 3rd maybe 4th with the lower ratio.

My questions are does anyone have the gear ratios for the 5 speed & 6 speed trans including final drive? 3:75? Also any lower ratios 4:06?

Also the max mph per gear with both ratios? Please include your tire size & rpm limit

Thanks in advance


__________________
WTB: ZX3, 2.3, 5SP, & Go Fast Parts.
10/10ths FOCUS is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 10-18-2007, 02:42 PM   #2
Egz
Sückn' n Blown
 
Egz's Avatar
 
Join Date: Sep 2003
Fan#: 442
Location: Tappahannock, VA
What I Drive: 2003 2.3l ZX3

Posts: 7,742
FF Reputation: 111 Egz Excellent Standing Member Egz Excellent Standing Member
Buy-Sell-Trade Rating: (3)
Stock MTX-75 with 3.82 gears and 205/50-15 tires:
7500 RPM: 1st=36.72 2nd=62.98 3rd=92.94 4th=130.84 5th=175.03

Stock MTX-75 with 4.06 gears and 205/50-15 tires:
7500 RPM: 1st=34.55 2nd=59.25 3rd=87.45 4th=123.11 5th=164.68

Stock MTX-75 with theoretical 4.55 gears and 205/50-15 tires: (not 100% sure these exist)
7500 RPM: 1st=30.83 2nd=52.87 3rd=78.03 4th=109.85 5th=146.94
Egz is offline  
    Reply With Quote
Old 10-20-2007, 08:22 AM   #3
10/10ths FOCUS
Focus Rookie
 
Join Date: Sep 2007
Fan#: 50307
Location: CT
What I Drive: 05 Mustang GT, Racing Focus Soon

Posts: 16
FF Reputation: 1 10/10ths FOCUS Good Standing Member
Buy-Sell-Trade Rating: (0)
Thanks for the info that is a big help.

I wounder if there is any gear ratio lower then the 4:06 for the 5 speed?

Any other Ford or Mazda gears that will fit?

Your estimate of a 4:55 is real close for my 100mph top speed in 4th. Maybe more like a 4:86.

In the perfect world I would love to be in 4th at 1:1 to get max hp.

Any more input out there?
__________________
WTB: ZX3, 2.3, 5SP, & Go Fast Parts.
10/10ths FOCUS is offline  
    Reply With Quote
Old 11-05-2007, 02:50 PM   #4
austin
Focus Enthusiast
 
austin's Avatar
 
Join Date: Apr 2005
Fan#: 21796
Location: Ft. Lewis, Washington, WA
What I Drive: 2008 white WRX, 2005 GSXR 750

Posts: 428
FF Reputation: 2 austin Good Standing Member
Buy-Sell-Trade Rating: (0)
these cars are geared higher than I thought
__________________
ich leibe die autobahn
guns kill people like forks kill people
NW POSSE #9
Combat Medics- we bust ours to save yours!
austin is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gear ratios and Compression ratios, explain please? turbovation Ford Focus & General Car Chat 3 01-10-2007 12:30 PM
Transmission Failure.... EuroZX3Focus Ford Focus & General Car Chat 23 11-25-2003 09:38 AM
SVTF Transmission noise bfocused SVT Performance (2002-2004) 1 10-15-2003 12:31 PM
FC gear ratios FoRdFoCuZdRiVeR Ford Focus & General Car Chat 9 09-25-2003 12:08 PM
He has a Twin Turbo Civic!!! who knew?! Zarelli6 Ford Focus & General Car Chat 71 09-07-2003 03:44 AM


All times are GMT -5. The time now is 05:41 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.