Original F MPG

Chinofj55 · 12-28-07, 09:17 AM

I Have a '72 fj 55. Recently rebuilt F motor with electronic ignition, rest is stock. I get 8mpg or less. Is this average?

Mace · 12-28-07, 09:32 AM

should be about 12 to 16 easily..

snailwagon · 12-28-07, 09:41 AM

I have a 55 with an f145 and a 1bbl, maybe 8mpg off-road, but about 14-16mpg on the highway. Motor is also very old and tired.

FineWynsFJ40 · 12-28-07, 10:05 AM

I get between 10 and 12 on highway. Something isn't right.

Chinofj55 · 12-28-07, 10:13 AM

I am thinking about the igniton and carb being the problems to this. The carb is orig. and was also rebuilt recently. Talked to the guy that installed the elect. ign. he said the timing was really touchy. He also said that I should go back to points. What do you guys think? Should I get a petronics and ditch my crane ignition or go to points?

rsbcruiser · 12-28-07, 10:25 AM

Quote:

Originally Posted by Chinofj55

I am thinking about the igniton and carb being the problems to this. The carb is orig. and was also rebuilt recently. Talked to the guy that installed the elect. ign. he said the timing was really touchy. He also said that I should go back to points. What do you guys think? Should I get a petronics and ditch my crane ignition or go to points?

Don't really know about the elect. ign. but me thinks your mechanic isn't familiar with it. The advice to go back to points makes me question the guys sanity. I have the petro and it seems to work fine. No points to wear so trouble free like I likes it.

Chinofj55 · 12-28-07, 10:36 AM

Thanks rsb. I was also thinking about a weber carb to replace stock. I found a thread bout orig carb v. aftermarket. Most people really liked the orig. Do you have a preference?

Russell Cole · 12-28-07, 11:58 AM

This summer went on a week long fishing trip with my son on one stretch took exactly 10 imperial gallons (45 litres) to go 135 miles I run 33" swampers and towing a loaded down 16 foot lund aluminum boat , this is pretty accurate because I've gpsd my truck to check my speedometer 50mph is actually 55mph (10% out) so 15 mpg all else stock . I'm looking hard at propane cheaper and runs at all angles. Russell

Mace · 12-28-07, 12:18 PM

Rebuild you stock carb..

89s rule · 12-28-07, 08:53 PM

rebuild your stock carb or send it to Jim C and have him do it. I have heard nothign but problems from most with webbers on a yota.

Colorado Boy-74-FJ40 · 12-29-07, 10:06 AM

I get 12 with an original, tired F engine with a gozillion miles on it.

vtcruiser60 · 04-23-08, 07:00 AM

With summer gas prices approaching, I thought I would toss this old thread back up there....

My...74 40 series (71 F engine 154k), 2.5 OME, 34x9.5, no hardtop....11.041 MPG

Thornton · 04-23-08, 04:21 PM

71 with F engine 4" lift 33x10.50 , 11.5 mpg. I know the carb needs an overhaul and tuned

12-28-07, 09:17 AM	#1
Chinofj55 IH8MUD Rookie Join Date: Nov 2007 Location: Packwood WA Posts: 8	Original F MPG I Have a '72 fj 55. Recently rebuilt F motor with electronic ignition, rest is stock. I get 8mpg or less. Is this average?

12-28-07, 09:32 AM	#2
Mace what he said Join Date: Feb 2002 Location: Las Vegas Posts: 10,983	should be about 12 to 16 easily.. __________________ I am kinda gay....... My Myspace http://profile.myspace.com/index.cfm...endid=75712409 "Mary Poppins: In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game."

12-28-07, 09:41 AM	#3
snailwagon IH8MUD Addict Join Date: Jun 2004 Location: high desert, ca Posts: 853	I have a 55 with an f145 and a 1bbl, maybe 8mpg off-road, but about 14-16mpg on the highway. Motor is also very old and tired. __________________ Clean your filthy Wok! 1969 fj55 1977 fj55 1981 Toy 4x4 Pickup 2007 Tacoma TeRD Nourishing Earth Body Care and Candle Company

12-28-07, 10:05 AM	#4
FineWynsFJ40 FineWynsFJ55 Join Date: Jan 2005 Location: West Michigan Posts: 700	I get between 10 and 12 on highway. Something isn't right. __________________ ~ Two paths diverged in the woods, and I, I engaged my front axle and took the path less travelled ~ 1974 FJ40: Pandora's Box 1970 FJ55: Iron Pig

12-28-07, 12:18 PM	#9
Mace what he said Join Date: Feb 2002 Location: Las Vegas Posts: 10,983	Rebuild you stock carb.. __________________ I am kinda gay....... My Myspace http://profile.myspace.com/index.cfm...endid=75712409 "Mary Poppins: In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game."

12-28-07, 10:13 AM	#5
Chinofj55 IH8MUD Rookie Join Date: Nov 2007 Location: Packwood WA Posts: 8	I am thinking about the igniton and carb being the problems to this. The carb is orig. and was also rebuilt recently. Talked to the guy that installed the elect. ign. he said the timing was really touchy. He also said that I should go back to points. What do you guys think? Should I get a petronics and ditch my crane ignition or go to points?

12-28-07, 10:36 AM	#7
Chinofj55 IH8MUD Rookie Join Date: Nov 2007 Location: Packwood WA Posts: 8	Thanks rsb. I was also thinking about a weber carb to replace stock. I found a thread bout orig carb v. aftermarket. Most people really liked the orig. Do you have a preference?

12-28-07, 11:58 AM	#8
Russell Cole IH8MUD Rookie Join Date: Nov 2006 Location: Ladysmith B.C. Posts: 58	This summer went on a week long fishing trip with my son on one stretch took exactly 10 imperial gallons (45 litres) to go 135 miles I run 33" swampers and towing a loaded down 16 foot lund aluminum boat , this is pretty accurate because I've gpsd my truck to check my speedometer 50mph is actually 55mph (10% out) so 15 mpg all else stock . I'm looking hard at propane cheaper and runs at all angles. Russell

12-28-07, 08:53 PM	#10
89s rule <>< Join Date: Mar 2004 Location: Due West, SC TLCA# 14198 Posts: 2,920	rebuild your stock carb or send it to Jim C and have him do it. I have heard nothign but problems from most with webbers on a yota. __________________ '93 FZJ 32K miles - 850/863's, 285 MTR's & Lightforce 240's waiting. '89 FJ62 - 4" Alcan, 33" BFG MT's, 4.88's, Lockright (rear), 4runner calipers, & 3' firestick. Cruise in the garage. FOR SALE! '97 4Runner SR5 - 4x4, leather, '06 4runner rims, 265/70/17 Toyo AT, TJM T-15, 3 baby seats. (Wife's DD) '83 FJ60 - DooDoo Brown in and out FOR SALE! '63 Biscayne Wagon - Kandy Green and Tweed. Family Wagon 3rd row in the garage. Erskine College Upstate Cruisers

12-29-07, 10:06 AM	#11
Colorado Boy-74-FJ40 IH8MUD Lifer Join Date: Aug 2005 Location: Gresham Or. Posts: 1,259	I get 12 with an original, tired F engine with a gozillion miles on it. __________________ 4 Chevys and a Yota ////////////////////////////// 1994 4X4 Silverado pickup 2000 S-10 pickup 2000 Monte Carlo SS 2003 Trailblazer LTZ and a little old 1974 FJ-40

04-23-08, 07:00 AM	#12
vtcruiser60 IH8MUD Lifer Join Date: Sep 2003 TLCA# 15129 Posts: 1,323	With summer gas prices approaching, I thought I would toss this old thread back up there.... My...74 40 series (71 F engine 154k), 2.5 OME, 34x9.5, no hardtop....11.041 MPG

04-23-08, 04:21 PM	#13
Thornton IH8MUD Junior Join Date: Apr 2006 Location: Manassas Va TLCA# 11609 Posts: 127	71 with F engine 4" lift 33x10.50 , 11.5 mpg. I know the carb needs an overhaul and tuned

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