Dsetz
Member
- Joined
- Aug 16, 2019
- Messages
- 94
- Reaction score
- 27
- Points
- 18
- Age
- 38
- Location
- Montana
- Vehicle Year
- 1984
- Make / Model
- Ford Ranger
- Engine Type
- 2.8 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
Greetings all,
I would appreciate a discussion about the idea of utilizing an oversized throttle body with associated computer system, tied to a supercharger. Essentially the computer/sensors believes it is X size larger (than the motor its on) and you supply the extra displacement by way of forced induction.
I won't be doing this soon(busy life, slow build) but would appreciate the conversation and critical discussion to make plans.
I've been lurking awhile and come up with what I think is an elegant(ish) solution for increasing the power in my 84 Ranger 2.8. I'm slowly planning a build of it. It will cannibalize most of my 94 Explorer but I don't really want to play with the 4.0. Parts are crazy expensive compared to those for the 2.8, and I like the long torque range and high rpm of the 2.8. I'd really like it if it achieved the 160 HP+ that 2.8's did in Europe(and the 4.0 does).
Anyways,
I want to do a FI conversion, mostly for the idle, easy start and mpg potential.
My elegant idea is to do the 3.8 CFI conversion, combined with a SC12 or SC14 supercharger.
Why the SC12/14? Because the Aisin superchargers are affordable and are plumbed already. No nightmare of building adapters in the CNC shop I don't have. Honestly I don't know why more people don't use them for this reason. And it can be tucked to the side to preserve the hood. And if the motor dies before the SC I can slap it on something else potentially, like my Nova with a 250 L6. Or if its great the Nova gets one too.
By my estimations the SC12 would run at about a 1.25-1.3 pulley ratio as is. So, 2.8 + 1.5= 4.3. 4.3-3.8=.5, which is about 15% more than 3.8 ECM expects. As I understand the MAP can handle about a 20% deviation, so I would be within that realm, assuming I didn't mod it too much more.
That's kind of my intent, is to spend my $$ on a modular SC setup for power instead of the low returns and high labor required to awaken a 2.8. But to also spend as little $$ as possible, basically junk yarding as much as possible.
I do realize the SC system is much more complicated than a compressor and plumbing, but I haven't put as much research into the small details.
Obviously I intend to use the already plumbed SC12 for a push-through application to minimize fabrication issues.
I assume I need a carb/tbi hat/bonnet, like a Spectre.
I believe the SC12 has a built in BOV. It was also mated to an intercooler in most cases, so they are cheap and readily available also. I've read a boost/vacuum indexed fuel pressure regulator can be had from many forced induction vehicles.
I haven't done any math on the injectors. I assume they would handle 5psi but might need to be larger for more boost.
Quick question- could I use such a vacuum regulated fuel pressure regulator on the 3.8 conversion in a NA form, to avoid the overfueling issues rangerdanger encountered?
My numbers indicate 5-9 psi, depending on VE, and around 165-200 HP.
It will sound both farking awesome and horrendous at the same time!
Check out this mad max supercharged 2.9! Already has the wife cringing hahaha.
Please, throw me your thoughts and criticisms. Just don't tell me to use the 4.0 ?.
The whole intent behind the build is just a bad ass 4x4 ranger I intend to keep forever. It'll get the 8.8 LS Explorer rear axle and 95+ disc brakes on it. I want the 63" chevy leafs and flipped articulating shackles. Also the beefier 5 speed manual with the longer 1-2-3 gears and 10" clutch. Eventually it will get the Dana 35 from the explorer too. I think with the 8.8 being 2" wider I'll be able to fit 255/70-75's on the rear to keep it planted.
Already got the explorer radiator and when I swap trannies it will get the trans cooler. Add an oil cooler.
Aerostar headers and a dual 2" exhaust. Will ideally do some port and polish and drill out the heads to eliminate the hot spots.
Oh I want to figure out the aerostar serpentine conversion as well to get rid of the v.
Ok sorry that post is a chapter long, but I hope I can get some feedback on this idea I think is great ?, and I'm honestly surprised by not seeing anyone else conceive/realize already in this crazy world.
D
I would appreciate a discussion about the idea of utilizing an oversized throttle body with associated computer system, tied to a supercharger. Essentially the computer/sensors believes it is X size larger (than the motor its on) and you supply the extra displacement by way of forced induction.
I won't be doing this soon(busy life, slow build) but would appreciate the conversation and critical discussion to make plans.
I've been lurking awhile and come up with what I think is an elegant(ish) solution for increasing the power in my 84 Ranger 2.8. I'm slowly planning a build of it. It will cannibalize most of my 94 Explorer but I don't really want to play with the 4.0. Parts are crazy expensive compared to those for the 2.8, and I like the long torque range and high rpm of the 2.8. I'd really like it if it achieved the 160 HP+ that 2.8's did in Europe(and the 4.0 does).
Anyways,
I want to do a FI conversion, mostly for the idle, easy start and mpg potential.
My elegant idea is to do the 3.8 CFI conversion, combined with a SC12 or SC14 supercharger.
Why the SC12/14? Because the Aisin superchargers are affordable and are plumbed already. No nightmare of building adapters in the CNC shop I don't have. Honestly I don't know why more people don't use them for this reason. And it can be tucked to the side to preserve the hood. And if the motor dies before the SC I can slap it on something else potentially, like my Nova with a 250 L6. Or if its great the Nova gets one too.
By my estimations the SC12 would run at about a 1.25-1.3 pulley ratio as is. So, 2.8 + 1.5= 4.3. 4.3-3.8=.5, which is about 15% more than 3.8 ECM expects. As I understand the MAP can handle about a 20% deviation, so I would be within that realm, assuming I didn't mod it too much more.
That's kind of my intent, is to spend my $$ on a modular SC setup for power instead of the low returns and high labor required to awaken a 2.8. But to also spend as little $$ as possible, basically junk yarding as much as possible.
I do realize the SC system is much more complicated than a compressor and plumbing, but I haven't put as much research into the small details.
Obviously I intend to use the already plumbed SC12 for a push-through application to minimize fabrication issues.
I assume I need a carb/tbi hat/bonnet, like a Spectre.
I believe the SC12 has a built in BOV. It was also mated to an intercooler in most cases, so they are cheap and readily available also. I've read a boost/vacuum indexed fuel pressure regulator can be had from many forced induction vehicles.
I haven't done any math on the injectors. I assume they would handle 5psi but might need to be larger for more boost.
Quick question- could I use such a vacuum regulated fuel pressure regulator on the 3.8 conversion in a NA form, to avoid the overfueling issues rangerdanger encountered?
My numbers indicate 5-9 psi, depending on VE, and around 165-200 HP.
It will sound both farking awesome and horrendous at the same time!
Check out this mad max supercharged 2.9! Already has the wife cringing hahaha.
The whole intent behind the build is just a bad ass 4x4 ranger I intend to keep forever. It'll get the 8.8 LS Explorer rear axle and 95+ disc brakes on it. I want the 63" chevy leafs and flipped articulating shackles. Also the beefier 5 speed manual with the longer 1-2-3 gears and 10" clutch. Eventually it will get the Dana 35 from the explorer too. I think with the 8.8 being 2" wider I'll be able to fit 255/70-75's on the rear to keep it planted.
Already got the explorer radiator and when I swap trannies it will get the trans cooler. Add an oil cooler.
Aerostar headers and a dual 2" exhaust. Will ideally do some port and polish and drill out the heads to eliminate the hot spots.
Oh I want to figure out the aerostar serpentine conversion as well to get rid of the v.
Ok sorry that post is a chapter long, but I hope I can get some feedback on this idea I think is great ?, and I'm honestly surprised by not seeing anyone else conceive/realize already in this crazy world.
D
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