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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 08-09-2011, 09:27 AM   #1 (permalink)
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Waste gate actuator

I seem to have a hole in my waste gate actuator. Looks like someone had the cover off the GPC and didn't have the battery disconnected and tried to weld their wrench between thtwo.



I can't tell that this is affecting performance but not sure.
Any ideas or explanation on how the thing works would be great
Thanks
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Old 08-09-2011, 09:40 AM   #2 (permalink)
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With a hole in it, the wastegate won't work at all. Plus when you build boost you'll be blowing boost pressure out the hole.
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Old 08-09-2011, 09:51 AM   #3 (permalink)
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Just like LMJD says, with that hole, your losing boost.

As the turbo spools up and creates pressure (boost) it will pressurize the actuator through the hose, with that hole there will be some pressure loss. Since the turbo only creates about 12 PSI max, I would think that a good clean and dab of silcone sealant will fix it.
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Old 08-09-2011, 10:29 AM   #4 (permalink)
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Okay, i think I've got some 2 part epoxy around spose that would do the trick?
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SOLD!! 1993 F-350 XLT 7.3L IDI, Crew Cab, Long Bed, 2wd, 5spd, 3.55s, 173000 and rolling.

1994 F-350 XLT 7.3L IDI Turbo, Crew Cab, Long Bed, 2wd Auto E40D, 4.10s, 10.25 Ford Rear End 200k+ Puuurrring like a Kitten!!!

1999 F-250 Lariat 7.3L Powerstroke Crew Cab, Short Bed 4x4 Auto 3.73s, 340,000 on the clock. DIY Tymar Intake, Did away with 10k version 2 mod and Finally got a 5 position chip tuned and installed by Dirty Diesel!!
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Old 08-09-2011, 11:24 AM   #5 (permalink)
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If you get the part very clean it will almost certainly work. The pressure is not very high. If you have JB Weld, use that. Be careful not to use too much since there's moving parts in there. I would come up with a way to rest it repair side down (maybe on a spacer and some waxed paper?) so that none of the epoxy flows into the actuator.
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