What fuel mileage are you getting with your 3.4 swap?
06-05-2012, 01:26 PM
#44
I'm reviving this thread because another thread popped up with similar subject.
I'm almost done with my swap....except for the evap stuff.
I'm thinking that I need to change my gearing to match and to take advantage of better fuel economy. I'm thining 4:88 or back to 4.56.
I'm almost done with my swap....except for the evap stuff.
I'm thinking that I need to change my gearing to match and to take advantage of better fuel economy. I'm thining 4:88 or back to 4.56.
06-06-2012, 03:48 AM
#47
Registered User
06-06-2012, 03:54 AM
#48
Registered User
With "spirited" driving, I'm averaging 18-20 mpg mixed (mostly city).
'91 T4R
150k on 3.4L
33x12.50r15
5 sp. with 4.10's
2 in. BL
4 in. Procomp springs in rear,
Cranked T-bars.
E-Fan and manual hubs.
But I have an alignment issue with the truck pulling to the left, so that increases my rolling resistance. Plus she idles at around 300 rpm, so the engine is not running at it's best.
'91 T4R
150k on 3.4L
33x12.50r15
5 sp. with 4.10's
2 in. BL
4 in. Procomp springs in rear,
Cranked T-bars.
E-Fan and manual hubs.
But I have an alignment issue with the truck pulling to the left, so that increases my rolling resistance. Plus she idles at around 300 rpm, so the engine is not running at it's best.
06-09-2012, 07:28 AM
#50
/83 Trekker
stock 4:10's
35" toyos
S/c 3.4L
e fan
running 94 octane
I know I'm also lighter then the 4runners or pickups , still have to drive over a scale to get my Trekker weight .
calculated my fuel economy from a show last year , I avereged 24 MPG .. this was mostly hiway
.
stock 4:10's
35" toyos
S/c 3.4L
e fan
running 94 octane
I know I'm also lighter then the 4runners or pickups , still have to drive over a scale to get my Trekker weight .
calculated my fuel economy from a show last year , I avereged 24 MPG .. this was mostly hiway
.
Last edited by slacker; 06-09-2012 at 07:29 AM.
06-12-2012, 06:34 AM
#52
Registered User
iTrader: (1)
Join Date: Jun 2011
Location: Northern New Mexico
Posts: 166
Likes: 0
Received 0 Likes
on
0 Posts
Ive got the supercharged 3.4 with bigger injectors,
93 4runner
31" goodyear duratracks
4:56
5 -speed
mostly mixed highway city, hilly terrain I'm getting about 17-18 mpg, like mentioned earlier i was getting between 10-11 mpg because the exhaust shop installed the o2 sensors in the wrong spot they thought they were the same because the plug was the same, be sure and check this people or make sure you have the right one completely, I have an a/f ratio gauge and it would read about 9.5-10.5 no matter what I did to the tune now it is at a happy 14.5-14.8 and Im seeing a ~7 mpg gain!
93 4runner
31" goodyear duratracks
4:56
5 -speed
mostly mixed highway city, hilly terrain I'm getting about 17-18 mpg, like mentioned earlier i was getting between 10-11 mpg because the exhaust shop installed the o2 sensors in the wrong spot they thought they were the same because the plug was the same, be sure and check this people or make sure you have the right one completely, I have an a/f ratio gauge and it would read about 9.5-10.5 no matter what I did to the tune now it is at a happy 14.5-14.8 and Im seeing a ~7 mpg gain!
06-12-2012, 08:32 AM
#53
Ive got the supercharged 3.4 with bigger injectors,
93 4runner
31" goodyear duratracks
4:56
5 -speed
mostly mixed highway city, hilly terrain I'm getting about 17-18 mpg, like mentioned earlier i was getting between 10-11 mpg because the exhaust shop installed the o2 sensors in the wrong spot they thought they were the same because the plug was the same, be sure and check this people or make sure you have the right one completely, I have an a/f ratio gauge and it would read about 9.5-10.5 no matter what I did to the tune now it is at a happy 14.5-14.8 and Im seeing a ~7 mpg gain!
93 4runner
31" goodyear duratracks
4:56
5 -speed
mostly mixed highway city, hilly terrain I'm getting about 17-18 mpg, like mentioned earlier i was getting between 10-11 mpg because the exhaust shop installed the o2 sensors in the wrong spot they thought they were the same because the plug was the same, be sure and check this people or make sure you have the right one completely, I have an a/f ratio gauge and it would read about 9.5-10.5 no matter what I did to the tune now it is at a happy 14.5-14.8 and Im seeing a ~7 mpg gain!
I'm running 35's and thinking about regearing to 4.88 or 4.56.
06-12-2012, 11:55 AM
#54
Registered User
Join Date: Nov 2010
Location: San Diego
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Wow, it's been over a year since I last replied to this thread. Well I have since supercharged my 3.4 and I'm happy to report that mileage stayed the same. It is still a sucky 12.8 mpg. Had I known about the power of the 3.4 I would have used a taller gear. The 4.88s keep rpm too high for good mileage. But it is still a rock crawler at heart.
06-12-2012, 02:58 PM
#56
Registered User
Join Date: Nov 2010
Location: San Diego
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Anthony1, I am spinning 3000 rpm at about 70. The 4runner rides on 35'' Goodyear Wranglers. I think 4.56 would be a good ratio to use.
Last edited by runnerMike; 06-12-2012 at 03:02 PM. Reason: Add more
06-12-2012, 06:41 PM
#58
Registered User
iTrader: (1)
Join Date: Jun 2011
Location: Northern New Mexico
Posts: 166
Likes: 0
Received 0 Likes
on
0 Posts
Honestly I think I could do better with the gears I have now if I could keep my foot out of it, just can't help myself ever since I did the swap! Lol not that the 4.10's wouldn't help even more!
06-26-2012, 06:08 AM
#60
Registered User
Join Date: Nov 2010
Location: NH
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
I've been thinking of ditching my over complicated 05 tacoma to go back to this generation truck but all the nice ones I've found have been 3.0's. I would think a relatively stock 5 speed truck with a 3.4 swap and 31" tires should get around 20 MPG. At least that's what I'm hoping. Or I could swap in the entire 22re drivetrain from my 89 regular cab.
