g'day all,
got a little problem with my hot 302 Windsor XF falcon ute (2500ks on engine).
it always empty's half of my (3 core) radiator coolant out of my radiator & into my purge canister. it's always done it, even before i rebuilt the engine. I've put a Hi-flo water pump & thermostat in it with no difference made.
its worse when i turn it off at operating temp' of around 160-170f, she will just purge out.
my C10 has its own cooler,
engine doesn't run hot when driving,
O' my heaters are not connected up neither, could that be the problem?the heater core took a dump when i first bought the car!

Cheers,
Bruizer

What cap is on it? What bore size?

here is a spec sheet on Bruizer's XF ute "Disturbed"

302 Windsor
Block Crack tested
bore + 40,000
(3 core) radiator
ACL race bearings
Hypertec performance pistons
SpeedPro moly rings
Ford Windsor v8 heads.
Heads fully reco + strip and bead blast + crack and
pressure test + surface v8 heads + full port job to suit cam specs + 3 angle
seat cut and face over size manly valves + springs tested(110 ft/lbs seat pressure) + fit
new valve stem seals + new cam and lifters cam specs-valve lift inlet .474
exh .498. inlet 30-78 ex 81-39
Hardened valve locks
Hardened twin row Rollmaster timing chain with
Torrington bearings - Crow .80 chrome moly pushrods
Speedpro anti pump lifters
StreetPro 27oz damper
302 crank balanced
304 polished conrods
Manualised C10 - total Recon’d with new Kevlar bands
& new stage 2 s**t kit
ASR 7 Ltr super street sump with crank scraper & windage tray
Flying performance flex Plate
Full APR bolt set
9” Diff & Disc all round
Accel 50.000 volt coil
ThunderMax ignition & Splitfire V groove plugs
10mm Pro series Topgun leads

Holley 670 street avenger
Weiand Stealth intake manifold

Street Terra roller rockers
Dynotec STAGE 3 Cam - 289 grind”


EF/EL Thermo Fan’s
Falken Tyer’s - Front 11x17 - Rear 275/40 R17
Mags R.O.H “MILANO”

What radiator cap?
Is the radiator new?

radiator isn't new but is in good condition & has been flushed a few times.
has a 15psi radiator cap.

Got a good photo of the engine bay showing the whole setup?

I'll get on to it,

pic's of bruizer cooling system

 

 

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Just looking at those pics I'd like to see your heater hooked up and your header tank mounted higher up to allow any air in the system to escape. In fact I'd use an XG 4.0L header tank and mount rather than that bottle you have.
If you don't hook the heater up you should just block the hole on the intake and block the hole on the pump.

cheers for that, I will give it a go after i finish installing the Gilmer Drive.