TeamSwift

Home of the Suzuki mini-compacts ! Your Home for all things Suzuki Swift, Geo Metro, Holden Barina, Chevy Sprint, Pontiac Firefly, and Suzuki Cultus. TeamSwift is a technical performance oriented community!
It is currently Sun Oct 22, 2017 1:37 am

Underbody braces, turbos and more!

All times are UTC - 5 hours




Post new topic Reply to topic  [ 16 posts ] 
Author Message
 Post subject: Mpg
PostPosted: Sat Aug 27, 2016 1:29 pm 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
Ive been averaging about 23-25 mpg the car has 75mm bore with vitara pistons 15 psi on a garret gt1544 turbo fmic 226/395 cam only about 5k miles on fresh build with custom 2 1/4 exhaust had a ton of issues with vacuum leaks up until a month ago now it is finally driving amazing and hauls. a/f ratio idles between 14-15 and about 10.8-12 depending on boost so i really see no issues if this is just the mileage that is normal i have no issue with it im just curious if theres something wrong. I do drive pretty aggressive but the few times i babied it it wasnt much different. On a side note anyone know which hond springs will lower this thing?


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Tue Aug 30, 2016 10:18 pm 
Offline
User avatar

Joined: Tue Feb 13, 2007 10:28 pm
Posts: 1170
Location: So Cal, USA
When I was doing the daily driver on mine, it was 30-35 mpg.
I had the weight down right around 1400 lbs.
Is your tire size affecting your MPG calculations?


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Wed Aug 31, 2016 5:28 am 
Offline
User avatar

Joined: Fri Jan 07, 2005 2:46 pm
Posts: 883
Location: Arizona
When gas prices hit $4.50 in AZ I drove mine for couple of tanks without getting into boost as much as I could just to find out if it would get same gas mileage I was getting when it was new and unmodified . I hit 40mpg . Usually I was getting 35-37 . If you are getting 20's something is seriously wrong , you are in the boost 24-7 or your calculations are off for some reason


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Wed Aug 31, 2016 4:11 pm 
Offline

Joined: Fri Dec 05, 2014 11:23 pm
Posts: 143
Location: SK
I was able to get 50mpg in a stock mk2 t3. That was 100% highway driving at 80km/h. 175/70/13 tires and stock 4-10 tranny.


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Wed Aug 31, 2016 8:45 pm 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
The taller 185 60 14s could be doing it i suppose. the speedo is off about 3-5 mph depending on speed compared to gps


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Wed Aug 31, 2016 9:15 pm 
Offline
Moderator
Moderator
User avatar

Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
What is your compression?

_________________
Contact 3tech: g10pro@rocketmail.com


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 01, 2016 1:35 am 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
With the vitaras id assume high 7 or low 8:1


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 01, 2016 8:11 am 
Offline
Moderator
Moderator
User avatar

Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
Not compression ratio. Do a compression test. Curious what it is.

_________________
Contact 3tech: g10pro@rocketmail.com


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 01, 2016 7:17 pm 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
Ohh gotcha, ill bang it out tomorrow morning and get back to you with the info


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Sat Sep 03, 2016 12:57 am 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
Just checked my post and it wasn't here. Anyway 95 100 95 leak down was good so i guess the vitaras are just really low compression making off boost pretty bad


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Wed Sep 07, 2016 11:28 pm 
Offline
User avatar

Joined: Tue Jul 03, 2012 12:19 pm
Posts: 344
Location: vancouver island, canada
i have almost the same setup as you, gt1544 75mm vitara fmic 2" exhaust factory cam (for now until i have money for a 3tech turbo cam) and run between 155-160 on all 3 cyl. with 10,000 km on the build and get 37 mpg driving it hard with 195/55r15 bfg sport comp tires 95-100 is WAY to low

_________________
92 geo metro 1.0L 5 spd. 2 dr Soon to be my turbo swap car. (Dragonfly) sold
91 pontiac firefly, 1.0L 2dr auto. stock. (The crap can) sold
91 chevy sprint. 1.0L 5 spd. My first turbo swap. (Red rocket) now the purple nurple
95 geo metro. 1.3L auto parts car. (Scrap)
91 chevy sprint turbo, blueboy keeping it "stock"


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 08, 2016 6:38 am 
Offline
a.k.a Bum head
User avatar

Joined: Mon May 31, 2004 5:29 pm
Posts: 3157
Location: London, ON
Were the tests done with a fresh battery and the throttle held open with all spark plugs removed and the injector harness unplugged? If not, you could get low numbers like that.


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 08, 2016 9:08 pm 
Offline

Joined: Thu Apr 30, 2015 8:40 pm
Posts: 50
Location: Los Angeles
Battery is good throttle open injectors were still going and i pulled 1 spark plug at a time. Im also using a pretty old harbor freight compression tester so maybe ill borrow something a little more reputable and do the rest. Ill follow up with another test on monday. Taking the fam camping tomorrow. Does anyone know if the cam might be giving up compression with the overlap i know some larger cams on my other v8 motors can cause that (so ive read)


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 08, 2016 10:27 pm 
Offline
a.k.a Bum head
User avatar

Joined: Mon May 31, 2004 5:29 pm
Posts: 3157
Location: London, ON
I can tell you for sure that leaving the other spark plugs in will effect your compression results. You'll need to do it again with no plugs in to get meaningful numbers. Leaving the injectors plugged in will cause fuel to build up in your oil. As you can imagine, that's a bad thing.

I can't remember what happened to my compression numbers before/after getting one of the 3tech cams. Suprf1y should know the answer to that, though.


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Thu Sep 08, 2016 11:15 pm 
Offline
Moderator
Moderator
User avatar

Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
z0sicks07 wrote:
. Does anyone know if the cam might be giving up compression with the overlap i know some larger cams on my other v8 motors can cause that (so ive read)


It definitely will, but not enough to make a motor with good compression seem low. It's a pretty mild cam

_________________
Contact 3tech: g10pro@rocketmail.com


Top
 Profile  
 
 Post subject: Re: Mpg
PostPosted: Fri Sep 09, 2016 12:02 pm 
Offline
User avatar

Joined: Tue Feb 28, 2012 4:35 pm
Posts: 828
Location: Hamilton, Canada
I am only getting 360km to a tank at best in my car
It's a pig

_________________
___________________
89 Swift gti
Modified B16 P29 75mm pistons,13:1CR, cultus intake, genie header, genie exhaust, 3tech head, 3tech 222/365 cams, 3tech UD pulley, megasquirt 2.0, 60mm throttle body, Aluminum flywheel


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group