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#1 |
Registered User
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Location: Houston, TX
Posts: 597
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Coolant leak from crossover plug
Has anyone ever dealt with this before? The coolant leaked from the crossover plug when I first put the engine back in the car so I replaced the o-ring with a new one. Now it seems it's leaking as well after a couple weeks. The only problem is that I don't know if it's leaking due to the bore of the crossover plug boss being too large for some unknown reason or the aftermarket plug, which have a very good reputation but perhaps mine isn't up to par.
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#2 |
Registered User
![]() Join Date: Mar 2005
Location: edmonton canada
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Re: Coolant leak from crossover plug
Unless you used the wrong size oring I would say it is the plug that is leaking
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mods, bbk longtubes, bbk xpipe , slp powerflo catback, EMP Stewart water pump, h&r springs , tokico adjustable shocks, php spacer, 4drilled/slotted rotors, , vortech with air/air, Anderson powerpipe, cobra tank/pumps, ford racing t56 6spd, mgw shifter,center force clutch, 410 gears , moser axles, ford racing carrier ,steeda alum lower control arms ,cobra bumper , and mirrors |
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#3 |
700 HP Mach
![]() Join Date: Nov 2003
Location: Orlando, FL
Posts: 8,384
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Re: Coolant leak from crossover plug
if you havent had a problem before I would guess that the aftermarket plug is slightly out of tolerance
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03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater |
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#4 | |
Registered User
![]() Join Date: Jul 2012
Location: Houston, TX
Posts: 597
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Re: Coolant leak from crossover plug
Quote:
I really need to get out of the car game - this nickel and dime **** is going to make me go broke |
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#5 |
Registered User
![]() Join Date: Mar 2008
Location: Jersey Shore
Posts: 1,349
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Re: Coolant leak from crossover plug
My plug stripped out the threads in the coolant crossover. i used a marine epoxy last time to seal it up. Im about to flush my coolant weekend. Gonna try to tap once size larger and get a new plug.
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#6 |
Registered User
Join Date: Aug 2013
Location: San Antonio
Posts: 9
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If the ring is the issue, I used an O ring from home Depot. Can't remember the size off the top of my head but I took the plug in and replaced the flat ring with trial and error. The rings cost me like 2 bucks for a few. Plumbing had them if I remember correctly, it's been 2 years and not a drop since I replaced the flat worn ring.
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#7 |
Registered User
![]() Join Date: Mar 2005
Location: edmonton canada
Posts: 765
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Re: Coolant leak from crossover plug
MMR sells plugs here is the link
http://www.yellowbullet.com/forum/sh...php?p=29280410
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mods, bbk longtubes, bbk xpipe , slp powerflo catback, EMP Stewart water pump, h&r springs , tokico adjustable shocks, php spacer, 4drilled/slotted rotors, , vortech with air/air, Anderson powerpipe, cobra tank/pumps, ford racing t56 6spd, mgw shifter,center force clutch, 410 gears , moser axles, ford racing carrier ,steeda alum lower control arms ,cobra bumper , and mirrors |
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#8 |
Registered User
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Location: Waaayy out in the country,leave your GPS at home!
Posts: 4,825
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Re: Coolant leak from crossover plug
I would hit a junk yard and find a stock plug,(the one in pic looks like an oil pan drain bolt to me), and make sure female threads are decent. As big as lip looks on the bolt, maybe a thin plastic washer what is on a oil pan drain bolt sometimes
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2003 DSG Mach 1-03 Cobra Term/T56 swap: 2.3L Whipple,3.37 Upper,4 lb.lower, ID 1000 injectors,LCD cooling mod,Billetflow idlers,200A Alt,oil cooler delete with MMR adapter plate,MM oil filter kit,FrozenBoost Heat Exchanger Flowtech L.T., Maganaflow O/R X with Magnapacks, FRRP D.S.,T-56 with 26 spline input shaft and anti venom mod with reverse lockout box, FR steel flywheel,Spec Stage 3+,Moser 31 spline axles,FR 3.73 gear Tuned by B.Kurgan 601Hp/558/Tq |
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#9 |
Can't be bridled
![]() Join Date: Sep 2007
Location: Texas
Posts: 7,006
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Re: Coolant leak from crossover plug
Easy there ghost rider. Let's not make any rash decisions.
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
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#10 |
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Location: San Diego, CA
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I'd try another o-ring before buying a new plug. It might be the wrong size.
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New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner |
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#11 |
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Re: Coolant leak from crossover plug
True, Ford made sure there specific o rings are off enough you HAVE to get it from them..does it have a torque value as well??
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2003 DSG Mach 1-03 Cobra Term/T56 swap: 2.3L Whipple,3.37 Upper,4 lb.lower, ID 1000 injectors,LCD cooling mod,Billetflow idlers,200A Alt,oil cooler delete with MMR adapter plate,MM oil filter kit,FrozenBoost Heat Exchanger Flowtech L.T., Maganaflow O/R X with Magnapacks, FRRP D.S.,T-56 with 26 spline input shaft and anti venom mod with reverse lockout box, FR steel flywheel,Spec Stage 3+,Moser 31 spline axles,FR 3.73 gear Tuned by B.Kurgan 601Hp/558/Tq |
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#12 |
Registered User
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Location: edmonton canada
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Re: Coolant leak from crossover plug
These O-rings seal from the side , so it doesn't really matter how tight you get the plug
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mods, bbk longtubes, bbk xpipe , slp powerflo catback, EMP Stewart water pump, h&r springs , tokico adjustable shocks, php spacer, 4drilled/slotted rotors, , vortech with air/air, Anderson powerpipe, cobra tank/pumps, ford racing t56 6spd, mgw shifter,center force clutch, 410 gears , moser axles, ford racing carrier ,steeda alum lower control arms ,cobra bumper , and mirrors |
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#13 | ||
Registered User
![]() Join Date: Jul 2012
Location: Houston, TX
Posts: 597
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Re: Coolant leak from crossover plug
Quote:
http://www.mach1registry.org/forums/...d.php?t=127025 You know emotional decisions are the most logical decisions... Quote:
No torque value - most people over-torque them and damage them, but mine is just snug due to the assumption that the o-ring is doing its job. Last edited by brtnstrns; 03-26-2015 at 12:32 PM. |
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#14 | |
Can't be bridled
![]() Join Date: Sep 2007
Location: Texas
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Re: Coolant leak from crossover plug
Quote:
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
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#15 |
Registered User
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Location: Houston, TX
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Re: Coolant leak from crossover plug
May have found the problem *facepalm*
![]() I didn't have time to check it yesterday, just saw the coolant when I went outside to grab a picture of my engine bay. I guess although the thickness of the o-ring was likely correct, the diameter was a bit too small and over-stretched it's welcome... |
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#16 |
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Re: Coolant leak from crossover plug
Glad you found it, I had the same thing happen on one of the tube o rings, doesn't take much, put a little vaseline on that bad boy and screw back in lol
__________________
2003 DSG Mach 1-03 Cobra Term/T56 swap: 2.3L Whipple,3.37 Upper,4 lb.lower, ID 1000 injectors,LCD cooling mod,Billetflow idlers,200A Alt,oil cooler delete with MMR adapter plate,MM oil filter kit,FrozenBoost Heat Exchanger Flowtech L.T., Maganaflow O/R X with Magnapacks, FRRP D.S.,T-56 with 26 spline input shaft and anti venom mod with reverse lockout box, FR steel flywheel,Spec Stage 3+,Moser 31 spline axles,FR 3.73 gear Tuned by B.Kurgan 601Hp/558/Tq |
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#17 |
Registered User
![]() Join Date: Oct 2005
Location: Burlington, NJ
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Re: Coolant leak from crossover plug
Did you get the correct new O ring from Ford?
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#18 |
Registered User
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Location: Houston, TX
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Re: Coolant leak from crossover plug
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