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1989 B2600i 4x4
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Discussion Starter · #1 ·
Fair warning: this is going to be long winded. TL/DR: has anyone swapped a later Mazda L/Ford Duratec 2.3/2.5 4 cylinder DOHC, or a Mazda AJ30/Ford Duratec V6 DOHC engine into a B2600i 4x4?
I know this subject has been beaten to death, but I would like to try something different if possible. I also know the 1st Gen KIA Sportage FE3 swap is very common and relatively easy for the B2000/2200 trucks and there is plenty of documentation and threads on it. It's not as common for the 4WD trucks, but some guys use the B2600i R type transmission behind the FE3 motors. On the FE3 Swap page on Facebook, a few guys have successfully put FE3's in 4WD trucks.
That being said, it seems like the best choice for truck since the G6 spun a rod bearing and I can't justify the time and money to rebuild it if there are better options. The only reason I'm thinking about other options is that the FE3 makes more HP but less torque than the G6. Actual numbers vary depending on the source, but the G6 makes 121 HP and 149 ft/lb of torque while the FE3 makes 130 HP and 130 ft/lb of torque. Again, these are the best numbers I could find and are not real world numbers.
To increase the torque output of most engines, replacing the crankshaft and rods for ones with a longer stroke are generally used with other things like a better camshaft profile and other tuning. The issue with the FE3 is that there isn't an off the shelf "stroker kit" available. There are a couple of threads on custom grinding the rod journals to use Chevrolet rods, or using an F2T rotating assembly. Either option requires machining to parts and balancing them. I work in a machine shop that's mostly set up for tool and die making, not automotive machining. Plus, I'm not the most experienced. The guys I work with have been patient at the very least with teaching me how to do this kind of work.
All of this being said, what about newer engine options from MPV's, 6 series cars, trucks, or SUV's? They're much more powerful and efficient and they're generally cheap and plentiful. I know the bell housing will be the biggest obstacle. My initial thoughts are if it can be separated from an automatic transmission, make an adapter to the R type transmission. Or make an adapter from the engine to trans. Not to simplify things, but it would be a plate aluminum with two hole patterns in it. Most of the "organ donors" came with an optional manual transmission so a flywheel is available, and some are RWD/4x4 which makes engine mounts and intake manifold options easier to figure out.
So, what are the thoughts and advice of the community?
 

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If your truck is a 4WD B2600i, then I would rebuild (or have it rebuilt) the stock engine......and be done with it.

2WD?.......much less effort to change the drivetrain, or perform an engine swap. The G6 is a very good engine, and you may be able to have a stock camshaft reground, for more power.

I think the effort involved to change to a different engine, in a 4x4 truck, would be too much for the actual value of the truck, after the swap.......but, I am usually a very practical thinker when it comes to modifying a vehicle, so who knows!
 

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1989 B2600i 4x4
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23 Posts
Discussion Starter · #3 ·
If your truck is a 4WD B2600i, then I would rebuild (or have it rebuilt) the stock engine......and be done with it.

2WD?.......much less effort to change the drivetrain, or perform an engine swap. The G6 is a very good engine, and you may be able to have a stock camshaft reground, for more power.

I think the effort involved to change to a different engine, in a 4x4 truck, would be too much for the actual value of the truck, after the swap.......but, I am usually a very practical thinker when it comes to modifying a vehicle, so who knows!
Thanks for the suggestion. My truck is 4WD and rebuilding the G6 engine would be the cheapest and easiest option.
As far as getting more out of the G6, I was in the process of setting up a Speeduino ECU that is open source and uses an Arduino based processor. This would allow for updating the ignition and injection control, and tune for a turbo or whatever else.
And I agree, it wouldn't take much to exceed the value of the truck. I know it's not a collector's item, and that I would never recover the money spent on it. The value to me is the condition, the fact it has not been driven much in the snow and salt, if any at all. I don't even think it's been off road to be honest. Dealing with the rust of the North East has made me appreciate a solid car or truck that much more.
 

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Thanks for the suggestion. My truck is 4WD and rebuilding the G6 engine would be the cheapest and easiest option. As far as getting more out of the G6, I was in the process of setting up a Speeduino ECU that is open source and uses an Arduino based processor. This would allow for updating the ignition and injection control, and tune for a turbo or whatever else. And I agree, it wouldn't take much to exceed the value of the truck. I know it's not a collector's item, and that I would never recover the money spent on it. The value to me is the condition, the fact it has not been driven much in the snow and salt, if any at all. I don't even think it's been off road to be honest. Dealing with the rust of the North East has made me appreciate a solid car or truck that much more.
Do you have info on the speeduino? What speeduino do I need for the G6 engine?
 
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