hole in #5 piston
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Joined: Feb 2009
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The long block come directly from Ford and we don't do any mods to it. It comes with a 12 month / Unlimited mileage.
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Joined: Oct 2005
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From: Jeffersonville IN
I am with RRanch on this one. Just replace the piston and get on with it. Unless u are gonna build a pull truck these engines can take a beating. I u are on a budget this is the best way too go. Just be sure and introduce the other 7 pistons to the new one. Just my .02
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Joined: Jan 2010
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Warranties can mean EVERYTHING.
I know acompany called Jasper makes quite a few remanufactured engines nationwide.
I would even give Ford a call to see if there is a "deal" going on ... plus check the warranty.
I did a Jasper for a Chevy 454 for $4000 ,,, warranty 3 years 30000 miles
Chevy offerd one for $5000 and offered a 6 year 100000 mile warranty.
I went with Jasper cause thery offered a higher labor rate with warranty to fix/repair.
Chevy warranty only replaced the part sold (Jasper paid for gaskets etc.) and labor rate was much lower plus warranty only applied to a MR Goodwrench mechanic.
As far a modded engines ... most I've dealt with have no warranty.
I would just replace the piston and then start saving up for the engine or truck of your dreams. Gives you time to use the truck while you find a great price on a good deal. Right now your truck is OOC.
I know acompany called Jasper makes quite a few remanufactured engines nationwide.
I would even give Ford a call to see if there is a "deal" going on ... plus check the warranty.
I did a Jasper for a Chevy 454 for $4000 ,,, warranty 3 years 30000 miles
Chevy offerd one for $5000 and offered a 6 year 100000 mile warranty.
I went with Jasper cause thery offered a higher labor rate with warranty to fix/repair.
Chevy warranty only replaced the part sold (Jasper paid for gaskets etc.) and labor rate was much lower plus warranty only applied to a MR Goodwrench mechanic.
As far a modded engines ... most I've dealt with have no warranty.
I would just replace the piston and then start saving up for the engine or truck of your dreams. Gives you time to use the truck while you find a great price on a good deal. Right now your truck is OOC.
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Joined: Oct 2007
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From: Albuquerque, NM
The truck pulled 15k trailer load from Durango to Silverton 3 times a week for almost 10yrs and it never got babied so its had a hard life. Where would you guys recommend getting a new piston from. I pulled both the pushrods off the exhaust side and the intake side then filled the cylinder with air, if I had a bad valve then I would have heard the air leak out the intake or exhaust but I didn't get air out of either one.
Senior User
Joined: Jan 2010
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I don't know if this set is correct but here you go on Ebay.
FORD 7.3 IDI DIESEL F250 F350 MAHLE PISTONS 144170 .020 : eBay Motors (item 270410963327 end time Mar-15-10 07:33:11 PDT)
FORD 7.3 IDI DIESEL F250 F350 MAHLE PISTONS 144170 .020 : eBay Motors (item 270410963327 end time Mar-15-10 07:33:11 PDT)
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How'd you fill the cylinder with air? thru the glow plug hole? did it try to pressurize at all? or did it just blow into the crankcase? so no compression, no air getting past the valves, I think I would pull the glow plug and look it over REAL good. same with the injector before pulling the head. if you could beg borrow or jerry rig a bore scope maybe harbor freight? and see a damaged piston then you know. I can see why you want to just buy a long block tho with the history behind this workhorse.
Don those pistons are for a Pre powerstroke IDI and the block would need rebored 20thousandths over but gives us an idea of the price of this repair. Keep posting what you find ok? inquiring minds want to know ;-)
Don those pistons are for a Pre powerstroke IDI and the block would need rebored 20thousandths over but gives us an idea of the price of this repair. Keep posting what you find ok? inquiring minds want to know ;-)
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Joined: Jan 2010
Posts: 132
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How'd you fill the cylinder with air? thru the glow plug hole? did it try to pressurize at all? or did it just blow into the crankcase? so no compression, no air getting past the valves, I think I would pull the glow plug and look it over REAL good. same with the injector before pulling the head. if you could beg borrow or jerry rig a bore scope maybe harbor freight? and see a damaged piston then you know. I can see why you want to just buy a long block tho with the history behind this workhorse.
Don those pistons are for a Pre powerstroke IDI and the block would need rebored 20thousandths over but gives us an idea of the price of this repair. Keep posting what you find ok? inquiring minds want to know ;-)
Don those pistons are for a Pre powerstroke IDI and the block would need rebored 20thousandths over but gives us an idea of the price of this repair. Keep posting what you find ok? inquiring minds want to know ;-)
I think it is important to keep loyalty to our sponsors.
It is good to see what is out there on the street.
I figuire one piston is gonna cost from a company that sells them by the set BUT ... a set that was broken down with less than 8 is gonna be cheap.
Anyway ... the dealerships don't replace all 8 pistons if one goes bad they just replace the bad one ... not the best for the long run but all they are trying to do it get past the warranty period.
I know a new long block is best.
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Joined: Nov 2007
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From: West Texas
Replacing one piston doesn't hurt anything in the long run at all. Just hone the hole, wipe it out and put it back together. I've done it on a lot of engines and never had a complaint.
If you go to international, or pretty much any parts store you can buy 1 piston easy. I'd go to international though to make sure you get the same exact one though. Keep it all in balance better that way. Ford sells them individually too.
If you go to international, or pretty much any parts store you can buy 1 piston easy. I'd go to international though to make sure you get the same exact one though. Keep it all in balance better that way. Ford sells them individually too.
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Joined: Jan 2010
Posts: 132
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Replacing one piston doesn't hurt anything in the long run at all. Just hone the hole, wipe it out and put it back together. I've done it on a lot of engines and never had a complaint.
If you go to international, or pretty much any parts store you can buy 1 piston easy. I'd go to international though to make sure you get the same exact one though. Keep it all in balance better that way. Ford sells them individually too.
If you go to international, or pretty much any parts store you can buy 1 piston easy. I'd go to international though to make sure you get the same exact one though. Keep it all in balance better that way. Ford sells them individually too.
Don't they balance a set 8 eight with in so many grams of each other?
When you buy one how close will the weight be to the installed 7?
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Joined: Oct 2004
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I hope this isn't a hijack but how do you go about doing a job like this? Do you have to take the head off at all? Can you lie on your back and disassemble, hone reassemble everything from the bottom or do you have to pull the head to get the piston/rod pushed out the top?
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Senior User
Joined: Oct 2007
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From: Albuquerque, NM
I was able to brow a compression test kit from a for mechanic. All I did was pull the glow plug out and put a air gauge on it then crank the motor. Once I found a cylinder with no compression I pulled both push rods and filled the cylinder with air, and the crank case did fill with air. I'm worried if I do replace just the one piston how long would it take for another piston to go before I have to pull the motor. Also I have to buy a new piston ring kit and new rod bearings right if I replace just the one piston?
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Joined: Jan 2006
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From: Elkhorn, WI
heres a complete rebuild kit with all bearings seals pistons rings and gaskets. if i had to go through all the work pull the motor id replace all pistons, rings and gaskets and 1085 for all motorcraft parts is a pretty good deal especially with 250k on the clock
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