Water pipes

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formula400
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Posts: 20
Joined: Tue Nov 22, 2011 9:05 am
Year: 1974
Model: formula 400
Engine: 400
Name: Damian Smith
Location: Northampton
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Water pipes

Post by formula400 » Wed Mar 06, 2013 2:25 pm

I'm restoring my 1974 formula 400

I have started filling the cooling system but can't remember is there is a blanking plug or where a pipe needs to go, the hole is the ones at the back of the cylinder head, I have a pipe in one that goes to the heater matrix hat should I do to the other??

Thank you in advance,

2 years into my resto all is going well I must add some pictures soon

formula400
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Re: Water pipes

Post by formula400 » Sat Mar 09, 2013 9:38 am

Has any body got pictures of there engine block so I can see where this goes, thank you

SUPERCHARGEDGTA

Re: Water pipes

Post by SUPERCHARGEDGTA » Sat Mar 09, 2013 7:10 pm

must be someone with a pontiac engine and a camera

formula400
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Re: Water pipes

Post by formula400 » Mon Mar 11, 2013 7:56 pm

please can you look at the picture and tell me if this is a core plug? or should i have a pipe going somewhere?
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formula400
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Posts: 20
Joined: Tue Nov 22, 2011 9:05 am
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Model: formula 400
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Re: Water pipes

Post by formula400 » Sat Mar 23, 2013 5:53 pm

have, found this is a blanking plug

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bhm1712
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Re: Water pipes

Post by bhm1712 » Sun Mar 24, 2013 9:15 am

On my 400, there is definitely a pipe which goes from the heater matrix outlet to a connection on the back of the cylinder heads towards the distributor. The pipework originates at the water pump outlet on the left hand side as you look from the front, to the heater matrix inlet, then the outlet from the matrix goes to the connection on the head.
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bhm1712
Site Admin
Posts: 2672
Joined: Sun May 10, 2009 4:58 pm
Membership No: 20-607
Year: 2001
Model: Trans-Am WS6
Engine: 350
Name: Ian
Location: Nottingham
Location: Nottingham
Contact:

Re: Water pipes

Post by bhm1712 » Sun Mar 24, 2013 9:25 am

Just read online that the flow is actually the opposite directon. The flow comes out of the head, into the heater matrix and then out of the matrix back to the inlet on the water pump.
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep

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SUPERCHARGEDGTA

Re: Water pipes

Post by SUPERCHARGEDGTA » Sun Mar 24, 2013 8:47 pm

heated water from engine/head should go to heater matrix first :thumb:

jonbullnose
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Year: 1972
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Re: Water pipes

Post by jonbullnose » Mon Apr 01, 2013 8:25 pm

you will need 1 blanking plug as 1 is the heater nipple at the back going to the matrix i will try and find a spare plug for you most parts places will have no idea what your talking about and try and sell you block core plugs not head plugs the head ones are made by doorman you can get from rockauto you should really change all the head and block plugs as if they have been left dry for some time they tend to start to leak straight away once the engine gets hot i forgot once to change the head plugs and then rememberd why i normally change them lol

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