98 Single Cab Tacoma 2.7L "Smudge"

[mikeyjd]

I've been reading up on warm air intakes on the Tacomaworld website. They say that detonation can be an issue once temps get above 140F on the 4 cylinder. Thanks to Obomort's http://ecomodder.com/forum/showthrea...e-27400-2.html thread I think I've found a solution that will allow to be more aggressive in maximizing the potential benefit of the modification without having to worry about the potential harmful effects of overdoing it.

[cosmick]

What's the GAWR for that rear axle?

[mikeyjd]

Originally Posted by cosmick

what's the gawr for that rear axle?

3.556

[cosmick]

No, that's a gear ratio, which may not even be correct, I'm seeing spec elsewhere listed as 3.58:1.
Anyway, I don't see the point of flatbeds on anything less than a full on 1-ton dually, but especially not on mini-pickups. However, since I moved to farm country, I've seen the value as well as the overloading I expected to see.
If you're going to work it heavy, GAWR matters, lest you destroy rear axles.
The weight rating for that axle is proving impossible to find, but is easy to infer from the tires Toyota offered with it. Standard 195/75R14s are rated to 1400# ea., but 215/70R14 was optional, those are rated at 1565# each. That would give a 3130# rating, which lines up pretty well with the payload rating, and with the competition. GM was 2900#, for example.
If you're going to load up, the strongest upgrade of easy availability, low cost, and similar gearing is the popular Ford Explorer 8.8" which, because it is just a narrow F150 axle with F150 tube, bearing, and shaft specs, is good to 3800#. And 3.5454545:1 gearing is common, as are limited-slip differentials. Ford called them Traction-Lock.
Maybe this won't help you, but having done several such axle upgrades, I can say the peace of mind alone is worth the hassle.
If you want to try taller gearing, the 8.8 offers ratios down to 2.47:1, which I know the 'yota doesn't begin to approach.
There are problems, I can list them all if anyone wishes, but this is enough food for thought today.

[spacemanspif]

If 6 washers/dryers fit on the bed and the average weight is ~200lbs, he's looking at 1200lbs in payload when fully loaded. I'd think that is within the duty rating of the axle not considering difference in weights between the wood and steel bed.

Side note: Does the bed slope down toward the back? Hope the frame isn't bent in the middle...

[mikeyjd]

Originally Posted by cosmick

No, that's a gear ratio, which may not even be correct, I'm seeing spec elsewhere listed as 3.58:1.
Anyway, I don't see the point of flatbeds on anything less than a full on 1-ton dually, but especially not on mini-pickups. However, since I moved to farm country, I've seen the value as well as the overloading I expected to see.
If you're going to work it heavy, GAWR matters, lest you destroy rear axles.
The weight rating for that axle is proving impossible to find, but is easy to infer from the tires Toyota offered with it. Standard 195/75R14s are rated to 1400# ea., but 215/70R14 was optional, those are rated at 1565# each. That would give a 3130# rating, which lines up pretty well with the payload rating, and with the competition. GM was 2900#, for example.
If you're going to load up, the strongest upgrade of easy availability, low cost, and similar gearing is the popular Ford Explorer 8.8" which, because it is just a narrow F150 axle with F150 tube, bearing, and shaft specs, is good to 3800#. And 3.5454545:1 gearing is common, as are limited-slip differentials. Ford called them Traction-Lock.
Maybe this won't help you, but having done several such axle upgrades, I can say the peace of mind alone is worth the hassle.
If you want to try taller gearing, the 8.8 offers ratios down to 2.47:1, which I know the 'yota doesn't begin to approach.
There are problems, I can list them all if anyone wishes, but this is enough food for thought today.

Sorry I thought you were asking the gear ratio. I wasn't familiar with the term GAWR.

The point of a flatbed for me is that appliances don't weigh a lot but take up a lot of space. It's hard to fit 4 in a standard Tacoma bed.

I'm not sure if it's worth messing with the rear setup for me at this point. I'm sure the explorer offers a much more robust setup, but I think my current setup is suited for my purposes for now at least. Taller gearing would be nice in some ways, but the current gearing is working pretty well as I spend a lot of my driving time on back roads where I'm able to take advantage of the lower gearing.

Originally Posted by spacemanspif

If 6 washers/dryers fit on the bed and the average weight is ~200lbs, he's looking at 1200lbs in payload when fully loaded. I'd think that is within the duty rating of the axle not considering difference in weights between the wood and steel bed.

Side note: Does the bed slope down toward the back? Hope the frame isn't bent in the middle...

The bed sits about an inch low in back do to improper shimming of the 4x4 during contruction of the bed. The frame is completely straight and intact. The average dryer I haul is 100lbs and the average washer is 120lbs. The heaviest machines are 200 and I wouldn't attempt to haul 6 at once without a trailer.

[mikeyjd]

I removed the clutch driven fan tonight. I also removed the power steering belt and drained the power steering fluid. I ran some dryer ducting from the exhaust manifold to the air intake to increase intake temps further.

[cosmick]

That's cool. Gotta love finding a vehicle well matched to your usage of it.
I know Isuzu Pups, even into the '90s, don't have frames adequate for carrying the kind of weight their stock GM-provided axles can carry, assumed 'yota should be better. Isuzu wouldn't believe the abuse my S-10s have survived.

[mikeyjd]

2015-04-10
537.6 mi
865.18 km
12.77 gal (US)
10.63 gal (Imp)
48.34 L
430.35 kWh $2.19
($27.97 total for this fill)
42.1 mpg (US)
50.57 mpg (Imp)
5.59 L/100 km
2.38 gal (US)/100 mi
800.5 Wh/mi

[user removed]

The easy way for me to check the rear loading was to look at the rear axle bump stops and how close they were to contact. About 1.5 inches should be max load. Once got close to a ton in my 99 F150 with me and 5 gallons of gas, the payload was 1900 pounds. Overall weight was 6100 with the truck at around 3800 empty. V6 stick, standard stripper work truck, bought for $13.5k new with AC, rubber floor mats.

Used it to build a house, 3.5 years later sold it and pocketed a $165k cap gain with no tax liability

regards
mech