SuperDave
Full Access Member
The current 6.9 in my 86 f350 has become a little lackluster in the performance department and is pretty hard to start in the colder months so I am planning to build another engine for it but I cant decide whether to stick with a 6.9 or go with a 7.3. I am kinda leaning towards the 6.9 because I have had so little trouble out of them and I have a better chance of getting a good core with a 6.9 whereas the 7.3 has a chance that cavitation could be an issue. On the other side of that I had a 94 f350 with the factory turbo idi and I liked that turbo setup much better than my current first generation banks sidewinder so finding one of those id take the gamble that it could have the cavitation problem.
My ideal setup would be an 87 6.9 because of the updated rocker arms/ glow plugs and then use the factory turbo setup from a 94 idit. If anyone knows of a rebuildable core for sale in reasonable driving distance of Atlanta Ga I would like to hear about it.
Before anyone has to ask I'm looking for another engine because the one in the truck is currently running and driving and I want to keep the truck on the road. At this point I'm thinking there is something internally wrong with the engine because it has no grunt whatsoever, my n/a 6.9 in my f250 will leave this truck in the dust with no problem especially with a loaded trailer. I have replaced my injectors with new stanadyne units and my pump has been rebuilt by a local and very reputable shop and is a turbo 7.3 pump turned up just slightly. Boost builds quickly enough and max is about 11psi and holds 6-8psi under normal driving conditions. I have also done a compression check and its right around 400psi in every cylinder. I have tried tweaking the pump and all that gets me is black smoke and high egt's and I have tried playing with the timing and its gotten a little better but not much. Its also very hard to start in winter I have new motorcraft glow plugs and controller and they do work correctly and it don't get the white smoke normally associated with glow plug problems. It's a cheap reman engine with who knows how many miles on it or what was done to it during the reman process but I'm going to run it till I get another one or it won't run any longer.
Readers digest version: my current 6.9 has one foot in the grave and the other on a banana peel and I can't decide between a 6.9 or a 7.3 . and if anyone knows of a good core near Atlanta let me know. Thanks a bunch!
My ideal setup would be an 87 6.9 because of the updated rocker arms/ glow plugs and then use the factory turbo setup from a 94 idit. If anyone knows of a rebuildable core for sale in reasonable driving distance of Atlanta Ga I would like to hear about it.
Before anyone has to ask I'm looking for another engine because the one in the truck is currently running and driving and I want to keep the truck on the road. At this point I'm thinking there is something internally wrong with the engine because it has no grunt whatsoever, my n/a 6.9 in my f250 will leave this truck in the dust with no problem especially with a loaded trailer. I have replaced my injectors with new stanadyne units and my pump has been rebuilt by a local and very reputable shop and is a turbo 7.3 pump turned up just slightly. Boost builds quickly enough and max is about 11psi and holds 6-8psi under normal driving conditions. I have also done a compression check and its right around 400psi in every cylinder. I have tried tweaking the pump and all that gets me is black smoke and high egt's and I have tried playing with the timing and its gotten a little better but not much. Its also very hard to start in winter I have new motorcraft glow plugs and controller and they do work correctly and it don't get the white smoke normally associated with glow plug problems. It's a cheap reman engine with who knows how many miles on it or what was done to it during the reman process but I'm going to run it till I get another one or it won't run any longer.
Readers digest version: my current 6.9 has one foot in the grave and the other on a banana peel and I can't decide between a 6.9 or a 7.3 . and if anyone knows of a good core near Atlanta let me know. Thanks a bunch!