Cascade Crew

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

So I dont know what tjr heck is goung on. Within 10
Min I am up to 220, according to guage. This is with normal in town drivimg nkt ot of ligjts. Fan on whole time. Heat full blat. 160degree thermostat. Have a make shoft airdam. Used to only climb that higj in stop amd go traffic. Only thing different is timing. set at about 10 degrees. Was at zero. 327. Qjet carb. Cheap headers. Single stock 85 Z28 fan. Blows air towards motor.

fiveoformula · Posted: Mon May 06, 2013 10:40 am Post subject:

No air dam will do it.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I have a makeshift 4.5 inch onr made of aluminium flashing. Serms to havr workef fine gor ladt year

fiveoformula · Posted: Mon May 06, 2013 11:01 am Post subject:

At that point, Id check thermostat operation. start it cold, let it heat up while feeling both hoses, the bottom hose will heat up first, if you have a 160 stat, the upper hose will start heating up when the T stat opens at 160-170ish. you can tell if its stuck closed if that upper hose stays cool for too long.
BTW slow down while typing, its really hard to understand with the mis-spelling. lol

Twilightoptics · Posted: Mon May 06, 2013 12:23 pm Post subject:

Ever fix the blown headgasket?... Rolling Eyes

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I dont know if its actually blown. Compression test checked fine . No loss of performance tnat I can yell. No smoke. Oil fine. But I do frothy coolent. So seems like some type of gasses are getykng in. so maybe cravk in head or gaskets?? And as fat as thermostat,.not running one at thr momrnt and same issues

fiveoformula · Posted: Mon May 06, 2013 2:04 pm Post subject:

Pressure test the cooling system, if it bleeds off and doesnt leak on the ground youll be looking for a cracked head or bad head gasket. You can probably rent the tool at auto zone.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Thats what I will do. Maybe I can just adapt a radiator cap to work . then just use my air compressor?

fiveoformula · Posted: Mon May 06, 2013 2:13 pm Post subject:

You need to be able to pump it up and gauge the pressure, then see how long it takes to bleed off. Would probably much easier to just get the pressure checker.

Alphius · Posted: Mon May 06, 2013 2:21 pm Post subject:

First, get a known good radiator cap and put a thermostat in there.

I had a blown headgasket on my truck that did not leak coolant into the combustion chambers (and passed a pressure test), however it did overpressurize the cooling system and force coolant out into the overflow until there wasn't enough coolant in the system to keep the engine cool. Is this what is happening to you? Mine was detectable by one of those exhaust gas in the coolant detector kits.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Ya. I suppose you are absolutely correct. Stay tuned. hopefully will.have resulys tonight bbq

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Gabe. yes. My overflow tank swelled up like a ballon on several ocasions. so if that the problem.I guess I shall be forced to do my head swap sooner then later. That and the fact.my wife is pregnant with number 4. I will never have a free moment to my self again. so if anybody has a cherry picker I could borrow for a few Weeks that would be awesome.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Another question I have. Is why does where the intale meets the head does the head ha,e 7 holes and the intake 6.

Alphius · Posted: Mon May 06, 2013 4:18 pm Post subject:

Don't need a hoist for a head swap. Very Happy

If you want to confirm a bad headgasket, go ahead and rent the exhaust gas tester for free from O'reilly Auotparts. You do have to buy the fluid to test with but it's only like $8 or something.

Congratulations on the 4th kid, you're gonna be a busy guy soon. Laughing

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I want to pull motor so I can take care of some other iisues and paint engine compartment and block. And yes busy. Please shoot me now.

aaron_sK · Posted: Mon May 06, 2013 5:37 pm Post subject:

Alphius · Posted: Mon May 06, 2013 5:48 pm Post subject:

chevymad · Posted: Mon May 06, 2013 5:53 pm Post subject:

Never used a hoist for doing any head work. Even big block chevy which has bigger heads then anything cept a hemi.

If the radiator pressurizes right away when the motor is cold, you have a head gasket problem. That in itself will cause the motor to overheat.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Ill pressue test it first when cold then? And then no reason to test exhaust gas?

Twilightoptics · Posted: Mon May 06, 2013 5:59 pm Post subject:

Pressure testing isn't going to show you a combustion into cooling system only leak. You need to put a gauge on it, and run the engine. If it goes higher than the pressure cap rating in a matter of minutes, head gasket/cracked head/block.