Performance & Maintenance Engine, forced induction, intakes, exhausts, torque converters, transmissions, etc.

Gas Mileage on 92 SC 300 - I get like 13MPG!!! Help!

Thread Tools
 
Search this Thread
 
Old 02-28-05, 07:54 PM
  #16  
newyorksc
Lexus Champion
 
newyorksc's Avatar
 
Join Date: Nov 2004
Location: Forest Hills
Posts: 1,864
Likes: 0
Received 6 Likes on 1 Post
Default

Originally Posted by Buttercup
What's your start up idle, and what's the lowest rpm it settles down to when warmed up? No reason for this question, just to see if there's a discrepancy.
Yeah, i'm interested in this too.
My '93 5spd idles at 800rpm when warmed up in neutral.
Old 02-28-05, 08:22 PM
  #17  
TMaxxTim
Instructor
Thread Starter
 
TMaxxTim's Avatar
 
Join Date: Aug 2004
Location: Tennessee
Posts: 879
Likes: 0
Received 1 Like on 1 Post
Default

Got a new air filter. I'll clean out the intake again tomorrow. Last time I had to scrub it to get anything out.

My idle usually starts out at about 1400, then 1100, then down to 700-800 when its warm.

I do burn some oil I think, but I also do get it close to redline probably on a daily basis so maybe that has something to do with the oil burning. I do have good compression in the engine. Oh well I guess I'll just end up having to live with it.
Old 02-28-05, 08:22 PM
  #18  
Buttercup
Pole Position
 
Buttercup's Avatar
 
Join Date: Jun 2003
Location: California
Posts: 249
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by newyorksc
Yeah, i'm interested in this too.
My '93 5spd idles at 800rpm when warmed up in neutral.
Ok that's good. The repair manual says 700 +/- 50 rpm, 800 is right around there so that looks normal.
Old 03-12-06, 07:13 PM
  #19  
SCoupe
Lexus Test Driver

 
SCoupe's Avatar
 
Join Date: Aug 2003
Location: California
Posts: 887
Likes: 0
Received 0 Likes on 0 Posts
Default

Put in a 2jz-gte Supra TT. I get 27.5 mpg on highway with light throttle and never getting on boost. Get on boost and drive the whip hard, then I get 15-18 mpg and making ~375 hp. This was an unexpected and pleasant outcome for the money and time I've spent.
Old 03-12-06, 09:11 PM
  #20  
ATL-SC
Lead Lap
 
ATL-SC's Avatar
 
Join Date: Apr 2005
Location: GA
Posts: 444
Likes: 0
Received 0 Likes on 0 Posts
Default

i also have a 92 5speed and i get 18.6 on average around town shifting at 3000 on the dot, but i make shure not to be in to low of a gear cuz if your dragging around in a gear that is too high its worse than more rpm and less pedal. and i get 22-25 on the highway at 3000rpm and 27 if i use the cruise controle. oh and the car has 189,000miles and i change the oil and filter religiously.
Old 03-14-06, 09:04 PM
  #21  
SCoupe
Lexus Test Driver

 
SCoupe's Avatar
 
Join Date: Aug 2003
Location: California
Posts: 887
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by ATL-SC
i also have a 92 5speed and i get 18.6 on average around town shifting at 3000 on the dot. and i get 22-25 on the highway at 3000rpm and 27 if i use the cruise controle.
Those are amazing/stunning numbers using crz. I never got anything past 22mpg on the hwy no matter what and I'm talking about freewheeling down long grades & other tactics. 18 city was common, 20 avg over all was common. This was all before the recent TT swap that does get me 27.5 hwy, no boost ~65-70mph on crz
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ChrisH
SC- 1st Gen (1992-2000)
3
10-17-12 05:29 PM
Adaa60
SC- 1st Gen (1992-2000)
19
01-25-11 05:37 AM
RedPhoenix
Performance & Maintenance
21
07-29-09 06:10 PM
stevenee
SC- 1st Gen (1992-2000)
16
02-02-07 04:14 PM
dragginboy
RX - 1st Gen (1999-2003)
17
03-11-04 12:50 AM



Quick Reply: Gas Mileage on 92 SC 300 - I get like 13MPG!!! Help!



All times are GMT -7. The time now is 10:24 AM.