.040 over bores good or bad in 7.3 - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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Old 02-03-2009, 08:28 PM Thread Starter
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.040 over bores good or bad in 7.3

Hello i bought this truck, its a 2002 7.3. i pulled it apart cause it was smoking. it had 2 broken piston rings that had wore a groove in the cyclinder wall. well i had to have the machine shop bore the block out to .040 over and one cylinder is sleeved now. my question is this. i already bought some used forged 7.3 rods. and the pistons are mahle with perfect circle rings. Now with this block having a sleeve and also being bored .040 over should i stay away from performace mods? i dont want a cyclinder wall distorting or somthing like the sleeve coming lose when i go and put a tuner and some injectors to it? any one have any experiance with this? thanks. you guys on this site have already helped me to diagnose the problem in this truck when i first got it and have been nothing but helpfull. mabey after i get this all togther and learn a little more bout deisels ill be able to put some input to some of these posts like mine. thanks again.
Jay

2000 f250 ECSB Dually 4.10s 305/70/16, 4x4 7.3 zf6 200k miles
Php hydra chip PHP tuned! 4" exhaust, stock turbo(ww2, turbomaster wastage actuator, gutted ebpv), FRX, 160/30 sticks SB 1939-CB single clutch, home brew water setup for when i'm pulling hay through the mountains.
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Old 02-03-2009, 08:49 PM
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Re: .040 over bores good or bad in 7.3

Did you have to go 40 over? Most DD dont want to go over 30...

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Old 02-03-2009, 10:10 PM Thread Starter
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Re: .040 over bores good or bad in 7.3

yeah .030 over didnt get it all. so .040 over was the only option it was either that or sleeve them all. the machine shop said hes done probly 10 or so over the years and that he has yet to hear of a problem with .040 over in these blocks he said the early 7.3s used to have problems with thin cylinder walls but that was obs 7.3.

2000 f250 ECSB Dually 4.10s 305/70/16, 4x4 7.3 zf6 200k miles
Php hydra chip PHP tuned! 4" exhaust, stock turbo(ww2, turbomaster wastage actuator, gutted ebpv), FRX, 160/30 sticks SB 1939-CB single clutch, home brew water setup for when i'm pulling hay through the mountains.
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Old 02-03-2009, 10:13 PM
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Re: .040 over bores good or bad in 7.3

I don't remember reading/seeing casting issues between obs and sd 7.3's. .040 over should be fine on a street truck. What power output are you looking for?

Porch Monkey. It's cool, I'm taking it back.
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Old 02-03-2009, 11:01 PM Thread Starter
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Re: .040 over bores good or bad in 7.3

i dont plan on ever going more than 450 rwhp. i know that is a biiiggg number for a 7.3 but i will never go more than that i promise you that. ill probly stop at about 375 rwhp but who knows.

2000 f250 ECSB Dually 4.10s 305/70/16, 4x4 7.3 zf6 200k miles
Php hydra chip PHP tuned! 4" exhaust, stock turbo(ww2, turbomaster wastage actuator, gutted ebpv), FRX, 160/30 sticks SB 1939-CB single clutch, home brew water setup for when i'm pulling hay through the mountains.
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Old 02-03-2009, 11:05 PM
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Re: .040 over bores good or bad in 7.3

I told myself I would stop after a chip.Now I have a forged rod engine (with 3 sleeves). Hopefully I will be able to control myself soon.

I wouldn't worry about the sleeves.

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Old 02-03-2009, 11:09 PM
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Re: .040 over bores good or bad in 7.3

off topic but it's cool to see another coon hunter...where you from?

Luke

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Old 02-03-2009, 11:21 PM Thread Starter
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Re: .040 over bores good or bad in 7.3

Im originaly from northern ok, right near ponca city. now im in the coast guard and get moved around every 3 or 4 years. at the moment im stationed in natchez, Ms. yeah i hear ya on the not going any higher than that hell i started out sayin i wasnt gonna go over stock but yall have changed my mind those dang videos of the black smoke drag racers get me goin. Heck i already purchaced some forged rods for this motor.

2000 f250 ECSB Dually 4.10s 305/70/16, 4x4 7.3 zf6 200k miles
Php hydra chip PHP tuned! 4" exhaust, stock turbo(ww2, turbomaster wastage actuator, gutted ebpv), FRX, 160/30 sticks SB 1939-CB single clutch, home brew water setup for when i'm pulling hay through the mountains.
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Old 02-03-2009, 11:23 PM
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Re: .040 over bores good or bad in 7.3

When they sleeved it did he bore a step in it to prevent the sleeve from sliding down? I've heard a lot of people have that problem when the sleeve doesn't have a step to rest on.

Justin


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Old 02-03-2009, 11:24 PM
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Re: .040 over bores good or bad in 7.3

Do y'all eat those or something? I hear about people hunting them but not sure for what.

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ALSO LOTS OF HELP FROM (IN NO PARTICULAR ORDER) TWISTED DIESEL PERFORMANCE, FCDP, ITP, MATT WITH GEARHEAD, ERIC WITH INNOVATIVE, DOUG WITH GOGO DIESEL, CASS WITH FULL FORCE DIESEL, AND SWAMP'S

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