Injector Cup Sealant??? - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 02-23-2010, 12:02 PM   #1 (permalink)
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Injector Cup Sealant???

ok i've searched and searched and asked the techs at my work and everyone has a different answer.All data says thread locker 620. my techs are saying motorcraft thread lock 262. i went to carquest and asked for loctite 620 and they came back with some permatex part nuber they would have to order.

so what are you guys using and whats worked??
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1988 F250 extra cab long bed 4x4. Hypermax turbo and intercooler. Converted to a ZF5 and NAPA solid flywheel and clutch 285/75/16 Yokahama A/T's, exhaust, Vac, water, and boost gauges. 4inch lift and now Dana 60 front

Early 99 F-250 extra-cab temco 8ft Flatbed 4x4, Detroit Transmission performance built auto trans, 4 inch superlift, 2004 HP60 and 10.5, converted to manual shift t-case. triple guage pod, pyro, trans, boost. 4 inch straight pipe into duals, K&N open air intake,DP tuner, 6.0 Tranny cooler, Beans D66 turbo with ebpv delete pedistal, Banks Big Head, AD code injectors, adrenaline High pressure oil, CB radio, Full audio system with JL audio stealth box 10" sub, 2005 front Seats and 2006 Harley Headlights
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Old 02-23-2010, 03:21 PM   #2 (permalink)
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I just did a search an it appears the Loctite 620 is the one to use.

Try searching - there were a few more threads. Also mentioned was 271, which is similar, but the 620 is the preferred.
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99.5 F-250 CC LB 4x4 7.3 Red
Trail Boss Replacement Bumpers, Tool Box, Headache Rack, Full Length Running Boards, BFG AT/KO 285/75x16E, 2003 Cup Holder, Marinco Heater Plug, Weather Tech Rain Vents / Hood Guard, B&W GN Hitch, X-Springs, Rear 4" F350 Blocks, Hellwig front and rear sway bars, Airlift / Wireless, Duraflaps

Isspro A-Pillar Gauges, Isspro TTM, Ford AIS, Magnaflow 3.5" DP - 4" Exhaust, Garrett GTP38R Turbo, Turbo-Master, High Flow Outlet, Non EBV Pedestal, IH Up-Pipes, DS 203 degree Stat, OA, BTS Tranny, 6.0L Tranny cooler, DP-Tuner F6, FRX, Cass Stage 1s, T500 HPOP, DieselSite HPX

99 F-250 CC SB 4x4 7.3 White
Ranch Truck, Ranch Hand brush Guard, Original Cup Thrower, DP-TUner F6, 4" Turbo Back Magnaflow, AIS Intake, 6.0 Tranny Cooler, Ford 4R100HD, CM Flatbed

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Old 02-23-2010, 06:20 PM   #3 (permalink)
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i can't seem to find loctite 620 at any store in town just online. i went to napa today an bought permatex sleeve retained which appears to have a higher working strength and temp than loctite 620. Part # 64040

carquest told me loctite got bought by permatex and the new number is 60940 which is high temperature bearing retainer which i can't find either plus the stuff i bought today actually has a higher strength than what carquest told me to buy
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1988 F250 extra cab long bed 4x4. Hypermax turbo and intercooler. Converted to a ZF5 and NAPA solid flywheel and clutch 285/75/16 Yokahama A/T's, exhaust, Vac, water, and boost gauges. 4inch lift and now Dana 60 front

Early 99 F-250 extra-cab temco 8ft Flatbed 4x4, Detroit Transmission performance built auto trans, 4 inch superlift, 2004 HP60 and 10.5, converted to manual shift t-case. triple guage pod, pyro, trans, boost. 4 inch straight pipe into duals, K&N open air intake,DP tuner, 6.0 Tranny cooler, Beans D66 turbo with ebpv delete pedistal, Banks Big Head, AD code injectors, adrenaline High pressure oil, CB radio, Full audio system with JL audio stealth box 10" sub, 2005 front Seats and 2006 Harley Headlights
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Old 02-23-2010, 11:35 PM   #4 (permalink)
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Not Sure - but this is a good read about your project:

Fuel Injector cup replacement, Was FPR surprise
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99.5 F-250 CC LB 4x4 7.3 Red
Trail Boss Replacement Bumpers, Tool Box, Headache Rack, Full Length Running Boards, BFG AT/KO 285/75x16E, 2003 Cup Holder, Marinco Heater Plug, Weather Tech Rain Vents / Hood Guard, B&W GN Hitch, X-Springs, Rear 4" F350 Blocks, Hellwig front and rear sway bars, Airlift / Wireless, Duraflaps

Isspro A-Pillar Gauges, Isspro TTM, Ford AIS, Magnaflow 3.5" DP - 4" Exhaust, Garrett GTP38R Turbo, Turbo-Master, High Flow Outlet, Non EBV Pedestal, IH Up-Pipes, DS 203 degree Stat, OA, BTS Tranny, 6.0L Tranny cooler, DP-Tuner F6, FRX, Cass Stage 1s, T500 HPOP, DieselSite HPX

99 F-250 CC SB 4x4 7.3 White
Ranch Truck, Ranch Hand brush Guard, Original Cup Thrower, DP-TUner F6, 4" Turbo Back Magnaflow, AIS Intake, 6.0 Tranny Cooler, Ford 4R100HD, CM Flatbed

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