Macrobb
Full Access Member
This is my '93:
She cost me $1900 a couple of months ago, and is a stock '93 Ford F-250. She's a 4x4, with a 5-speed ZF S5-42 transmission, Sterling 10.25 rear differential(Limited slip even!), and a factory turbo.
The only non-factory part of this truck is the engine block, which appears to be out of a '91. That motor was swapped in about 60,000 miles ago due to cavitation.
The replacement block does not appear to have been rebuilt.
I recently replaced the unknown-origin rebuilt IP in the truck with my RD2-110 IP that I've had for a couple of years now in my tan '88.
I've also put a pressure-matched set of injectors in the truck - these are just a decent set of Stanadyne's I had lying around, which all pop-tested good and which I pressure-matched myself to within 100 PSI.
The lift pump is a stock mechanical pump; unknown origin.
So, the only 'performance part' on this truck is the IP. Everything else could have rolled off the factory floor back in '93.
I took the truck to J & J Performance in Sandpoint, Idaho.
Here's my results:
View media item 191The basic number here is 246 HP at the wheels, and pretty consistent, too.
Note that:
The first two runs are in 4th gear, and the RPMs are calibrated to that. I think the RPMs are off by a small percentage, perhaps 100 RPM high at 2500 based on running calculations against the raw MPH values.
The nest three runs are in 5th gear. The RPMs here are off, due to them being calculated from MPH by the computer... and it not knowing I put it in 5th. Compensate by .76 to account for gearing.
The last 2 runs were 'letdown' runs - he wanted to see what sort of drive train losses/load I'd get.
I'm thinking the numbers here are incomplete, considering the losses should be highest at higher RPM, not at lower RPM. Plus the whole 'average HP' vs 'maximum HP' numbers.
I'm going to have to get some more raw data from him in the next few days.
Take them with a grain of salt.
Beyond that... I was getting 15 PSI or so max from the turbo. I had plenty of extra fuel, I definitely created a bit of smoke at times. Either way, it needs more air to do any better; the fuel is plenty.
Still, I think this is a pretty good result overall for a bone-stock truck with only a single 'bolt on' mod.
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She cost me $1900 a couple of months ago, and is a stock '93 Ford F-250. She's a 4x4, with a 5-speed ZF S5-42 transmission, Sterling 10.25 rear differential(Limited slip even!), and a factory turbo.
The only non-factory part of this truck is the engine block, which appears to be out of a '91. That motor was swapped in about 60,000 miles ago due to cavitation.
The replacement block does not appear to have been rebuilt.
I recently replaced the unknown-origin rebuilt IP in the truck with my RD2-110 IP that I've had for a couple of years now in my tan '88.
I've also put a pressure-matched set of injectors in the truck - these are just a decent set of Stanadyne's I had lying around, which all pop-tested good and which I pressure-matched myself to within 100 PSI.
The lift pump is a stock mechanical pump; unknown origin.
So, the only 'performance part' on this truck is the IP. Everything else could have rolled off the factory floor back in '93.
I took the truck to J & J Performance in Sandpoint, Idaho.
Here's my results:
View media item 191The basic number here is 246 HP at the wheels, and pretty consistent, too.
Note that:
The first two runs are in 4th gear, and the RPMs are calibrated to that. I think the RPMs are off by a small percentage, perhaps 100 RPM high at 2500 based on running calculations against the raw MPH values.
The nest three runs are in 5th gear. The RPMs here are off, due to them being calculated from MPH by the computer... and it not knowing I put it in 5th. Compensate by .76 to account for gearing.
The last 2 runs were 'letdown' runs - he wanted to see what sort of drive train losses/load I'd get.
I'm thinking the numbers here are incomplete, considering the losses should be highest at higher RPM, not at lower RPM. Plus the whole 'average HP' vs 'maximum HP' numbers.
I'm going to have to get some more raw data from him in the next few days.
Take them with a grain of salt.
Beyond that... I was getting 15 PSI or so max from the turbo. I had plenty of extra fuel, I definitely created a bit of smoke at times. Either way, it needs more air to do any better; the fuel is plenty.
Still, I think this is a pretty good result overall for a bone-stock truck with only a single 'bolt on' mod.