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 Post subject: Cooling system query
PostPosted:Thu Mar 24, 2016 7:37 pm 
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Small Block

Joined:Sun Mar 20, 2016 9:56 am
Posts:49
Car Details:1977 305 Camaro
Hi folks ..my 77 305 has a dual core rad.....I've only had the car a couple weeks...I noticed the expansion tank is empty and doesn't appear to fill with any coolant...should I be concerned?...as no probs on the road..and the temp warning gauge works and has never come on....also I've noticed the level in the radiator was down a few cores...so I topped up but not so covering all of them...there's no "max" mark on the casing so am I right in thinking that it just settles to a certain level which is normal for my particular car?


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Cooling system query

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 Post subject: Re: Cooling system query
PostPosted:Thu Mar 24, 2016 8:59 pm 
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Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
There should always be some coolant in the expansion tank, never dry.
Mine´s marked at half full for cold, engine hot the level rises a little.
My rad is full to the brim.


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 Post subject: Re: Cooling system query
PostPosted:Thu Mar 24, 2016 9:04 pm 
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Small Block

Joined:Sun Mar 20, 2016 9:56 am
Posts:49
Car Details:1977 305 Camaro
Quote:
There should always be some coolant in the expansion tank, never dry.
Mine´s marked at half full for cold, engine hot the level rises a little.
My rad is full to the brim.
Sounds like I need to top it right up to the neck so all the fins are covered...thanks


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 Post subject: Re: Cooling system query
PostPosted:Thu Mar 24, 2016 9:35 pm 
Offline
Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
And put some in the expansion tank.
Then run the motor, get it hot.
It should puke coolant into the expansion tank, let the motor cool down and it´ll suck back into the radiator what it needs.
Keep the expansion tank about half full.

Image


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 Post subject: Re: Cooling system query
PostPosted:Thu Mar 24, 2016 10:13 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
Second that on the coolant reservoir :thumbup:

They are designed as closed loop, you can get the reservoirs new from the U.S which is good news.

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 Post subject: Re: Cooling system query
PostPosted:Fri Mar 25, 2016 11:20 pm 
Offline
Small Block

Joined:Sun Mar 20, 2016 9:56 am
Posts:49
Car Details:1977 305 Camaro
Quote:
And put some in the expansion tank.
Then run the motor, get it hot.
It should puke coolant into the expansion tank, let the motor cool down and it´ll suck back into the radiator what it needs.
Keep the expansion tank about half full.

Image
Thanks I'd thought about filling the expansion tank......i brimmed the radiator today before going for a city center drive.....no probs during it.......i checked for leaks and none seen....the inlet and outlet hoses were warm too....so the system works.


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 Post subject: Re: Cooling system query
PostPosted:Sat Mar 26, 2016 10:32 am 
Offline
Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
You should´nt have to take the cap off the rad., just check the
expansion tank and top that up.


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