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EL Falcon 6 cyl Welch Plugs 

 

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 Post subject: EL Falcon 6 cyl Welch Plugs
Posted: Thu Sep 14, 2017 6:34 pm 
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Age: 52

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Joined: 6th Sep 2017

Ride: EL Falcon

Location: Campbelltown
NSW, Australia

Hi,
I'll be replacing the welch plugs on both sides of the engine (1st time they have been done), but I need to know is it possible to do the intake side welch plugs without removing the intake manifold? The rear engine plug will be done at a later date. I'll be removing the air filter housing to give me some room but is it easier to remove them from the top or underneath? Also does the dizzy need to be removed? Its been a top car with a great engine, having travelled 450,000 k's. The head gasket is still original, although it is leaking a little coolant near cyl No5. Any advice appreciated.
Thanks.

Last edited by TopGun on Fri Sep 15, 2017 6:46 pm, edited 1 time in total.

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 Post subject: Re: EL Falcon 6 cyl Welch Plugs
Posted: Thu Sep 14, 2017 9:49 pm 
Getting Side Ways
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Location: Melbourne
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Hi and welcome to Fordmods.

It will be near impossible to install the welch plugs properly without removing the intake manifold. They need to be tapped in at the correct angle with a socket and hammer. There's not much room to swing a hammer under there. The distributor needs to be removed to get to the welch plug behind. Hence, some guys opt to remove the engine to fix them (and the sump gasket as well).

IMO I'd replace the head gasket as well if you are removing the intake manifold. The leak will only get worse. Have you had the car since new? I thought the composite gaskets only lasted about 80 000km before they start leaking (which is why the AU MLS head gasket is popular).

 

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 Post subject: Re: EL Falcon 6 cyl Welch Plugs
Posted: Thu Sep 14, 2017 10:49 pm 
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Age: 52

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Joined: 6th Sep 2017

Ride: EL Falcon

Location: Campbelltown
NSW, Australia

Hi and Thankyou, Great forum. Thanks for the info. I'll have a think about which way to go about it now that I have your input. The car was 12 months old and had 40,000ks on the clock when we bought it from a reputable ford dealer. The logbook showed it belonged to a rural council, hence the high kilometres. Quite a few ks for one year, and the log book shows just the basic services. I've had the car since 1998, and have done most of the mechanicals and maintenence myself, and it really hasn't given us too many problems, but that head gasket has never been done. Genuine original head gasket. I have always used 20W/50 engine oil and the cooling system has always had an inhibiter in it. Would it be worthwhile doing the head gasket and then putting that high mileage head back on? The engine does go well so maybe it would.
Thanks again
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 Post subject: Re: EL Falcon 6 cyl Welch Plugs
Posted: Fri Sep 15, 2017 10:50 am 
Getting Side Ways
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Joined: 12th Aug 2007

Gallery: 22 images

Ride: AU2 XR8 ute & 91 EA bitsa

Location: Melbourne
VIC, Australia

TopGun wrote:
Would it be worthwhile doing the head gasket and then putting that high mileage head back on?

If you are thinking of getting more work done to the head, then you'll have to toss up whether a high mileage engine is worth spending money on. A secondhand lower mileage engine is another option if you don't want to spend too much. I recently bought an EF engine for $200 which has been recoed recently. Luckily for me the engine had a badly leaking rocker cover and looked worse than it was :D .

With an engine crane, it takes 2-3 hours to remove the engine with 2 guys. I reckon you could swap an engine over in weekend if you take your time.

 

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AU2 XR8 with Raptor VL, ported Yella Terra GT40P heads, Scorpion 1.6 RRs, XE264HR-14 Comp Cam, ceramic coated Hurricane Headers, 60lb injectors, Walbro 255, 200cfi cats, 3" exhaust & Snow Performance water methanol injection

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 Post subject: Re: EL Falcon 6 cyl Welch Plugs
Posted: Fri Sep 15, 2017 3:56 pm 
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Age: 52

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Ride: EL Falcon

Location: Campbelltown
NSW, Australia

Good points. I've handed the car down to my son recently, and he doesn't do many ks, so I'm doing these plugs for now, but will definately be considering a second hand engine in the future. Thanks for your help.
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