The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)
-   -   Restoring Rusty (https://67-72chevytrucks.com/vboard/showthread.php?t=645440)

Gregski 10-23-2016 10:14 PM

Re: Restoring Rusty
 
3 Attachment(s)
so how is it? does it work?

Yes the system works great?

here you can see bubbles coming only from the inlet coupling, I did not put any white tape on the threads and need to tighten it some more, but it's a great example of what the leaks would look like

posted a video here: Small Block Chevy Cylinder Test DYI Poor Mans Water Pressure Test

harley87ta 10-24-2016 09:14 PM

Re: Restoring Rusty
 
Did you ever figure out the coolant in this pic? Looks almost like a crack but I'm just speculating.

http://67-72chevytrucks.com/vboard/a...1&d=1475354097

Gregski 10-29-2016 10:35 AM

Re: Restoring Rusty
 
2 Attachment(s)
Quote:

Originally Posted by harley87ta (Post 7734494)
I'm liking your festive gauge package is it Christmas in October?

ha ha, not for long I got tired of the red gauge display making me think I am in the red sort of speak so I yanked it and sent it back to Summit for an exchange, I did buy a green one originally after all so I expect an exchange for a green one - is that too much to ask? ha ha

Gregski 10-29-2016 10:40 AM

Re: Restoring Rusty
 
2 Attachment(s)
Good morning everyone, just wanted to report that after 500 miles on the new rings and con rod bearings we are still shrapnel free, hee hee

also remember after 200 miles on the new rings I drained the break in oil to replace the rod bearings cause of a slight rattlin noise

so far no noises...

hatzie 10-29-2016 03:19 PM

Re: Restoring Rusty
 
Quote:

Originally Posted by Gregski (Post 7755296)
Good morning everyone, just wanted to report that after 500 miles on the new rings and con rod bearings we are still shrapnel free, hee hee

also remember after 200 miles on the new rings I drained the break in oil to replace the rod bearings cause of a slight rattlin noise

so far no noises...

So far so good. Maybe you got away with it.

Looks like a late 1976-78 speedometer.

Gregski 10-29-2016 06:11 PM

Re: Restoring Rusty
 
Quote:

Originally Posted by hatzie (Post 7755433)
So far so good. Maybe you got away with it.

Looks like a late 1976-78 speedometer.

The Man knows his clocks, ha ha!

Gregski 10-29-2016 06:16 PM

Re: Restoring Rusty
 
5 Attachment(s)
so yanked the radiator to isolate it and pressure test it off the truck, I knew I had a pin hole leak by the inlet but I was wondering if there are other leaks as well, nope

picked up these 1 1/2" expansion plugs at NAPA they seem to do the job well

looks like the radiator cap lets go at 10 PSI, oh well that's good enuff I think

Gregski 10-29-2016 06:20 PM

Re: Restoring Rusty
 
3 Attachment(s)
using some high tech equipment here folks, let me tell you that

rocket science this is not, don't be skierd, the overflow nipple worked well to hook up the bicycle pump and fill it with air

Gregski 10-29-2016 06:23 PM

Re: Restoring Rusty
 
2 Attachment(s)
well with no glaring problems with the radiator we moved those expansion plugs over to the inlet and outlet rubber radiator hoses leading to and from the engine and plugged them up

Gregski 10-29-2016 06:27 PM

Re: Restoring Rusty
 
2 Attachment(s)
just like we did with our test cylinder head, we are going in through the water temp sending unit hole to put air in the engine

we were gentle as to not blow up the water pump seals, so just to 10 PSI

I removed the valve covers so that I could see some bubbles if any or hear some hissing, but no, none of that

I also removed the spark plugs to see if I can hear anything in there, nothing, by the way all plugs look the same, so #5 is purdie now

I left the engine pressurised at 10 PSI while I write this up, we'll see if it drops or stays level

LT7A 10-29-2016 06:50 PM

Re: Restoring Rusty
 
I'm enjoying your diagnostics. You should send these photos to Zefal and show them what a precision instrument their tire pump turned out to be. They would probably be impressed. Or tell you that your warranty was void.

I'm hoping you find something that is easy to fix, or that you had just managed to work out an air pocket. Good luck man.

pontgta 10-29-2016 08:47 PM

Re: Restoring Rusty
 
Quote:

Originally Posted by Gregski (Post 7755296)
Good morning everyone, just wanted to report that after 500 miles on the new rings and con rod bearings we are still shrapnel free, hee hee

also remember after 200 miles on the new rings I drained the break in oil to replace the rod bearings cause of a slight rattlin noise

so far no noises...

Good to hear... you are definitely getting it done...

hatzie 10-29-2016 11:06 PM

Re: Restoring Rusty
 
One of the pressure tests I typically do is to pressurize the system and run the engine. If the needle doesn't fluctuate or drop like a rock I don't usually have a problem.
You can get cooling system pressure testers from AutoZone's loaner tools.

10PSI is a little low for the radiator cap. They are usually rated for 14-16PSI. Every PSI drop is @ 4.333333F lower boiling point.
Pure water boils at 228F at 10PSI vs 254F at 16PSI. 50:50 Coolant:Water will raise the boiling point around 10F.

Gregski 10-29-2016 11:17 PM

Re: Restoring Rusty
 
Quote:

Originally Posted by hatzie (Post 7755733)
10PSI is a little low for the radiator cap. They are usually rated for 14-16PSI. Every PSI drop is @ 4.333333F lower boiling point.
Pure water boils at 228F at 10PSI vs 254F at 16PSI. 50:50 Coolant:Water will raise the boiling point around 10F.

Thanks HATZIE so could i be loosing coolant via the radiator cap in the form of vapor on the account of it releasing pressure too early at 10 PSI rather than 15 PSI?

hatzie 10-29-2016 11:24 PM

Re: Restoring Rusty
 
It's possible. If you don't have a catch-can/overflow-bottle or the bottle is smaller than the overflow volume you're likely just blowing it out on the road.

Gregski 10-30-2016 10:13 AM

Re: Restoring Rusty
 
1 Attachment(s)
so this morning I was thumbing through this...

it's actually a great magazine called SUPER CHEVY

Gregski 10-30-2016 10:15 AM

Re: Restoring Rusty
 
1 Attachment(s)
when I came across this...

a YOGI'S INC distributor'/reseller ad (never heard of them actually) have you guys?

Gregski 10-30-2016 10:17 AM

Re: Restoring Rusty
 
1 Attachment(s)
when I spotted this

a Northern Radiator ad, (again never heard of these guys either)

Gregski 10-30-2016 10:23 AM

Re: Restoring Rusty
 
1 Attachment(s)
which led me to this

actually a smokin' deal on an aluminum radiator for a V8 small block with a manual transmission for only $271

CORE DIMENSIONS: 28 1/4 x 17 1/8 x 2 1/4

OVERALL DIMENSIONS: 33 x 18 3/8 x 3 1/8

RDrancher 10-30-2016 11:26 AM

Re: Restoring Rusty
 
Quote:

Originally Posted by Gregski (Post 7755972)
when I came across this...

a YOGI'S INC distributor'/reseller ad (never heard of them actually) have you guys?

Never heard of them before a few weeks ago. They had a booth set up at Goodguys in Ft Worth. They had hats and t's for $10 each. Since that's about the same price as a bottle of water at GG's, I bought one of each.

Gregski 10-30-2016 05:25 PM

Re: Restoring Rusty
 
well it's been 24 hours and the pressurized engine (block, heads, and intake manifold) are still holding 10 PSI, so I am going to order that new Northern aluminum radiator this week after I get paid, and we'll change one thing at a time till we find the source

hatzie 10-30-2016 05:54 PM

Re: Restoring Rusty
 
If the Aluminum radiator is a good idea today it's still going to be a good idea in a couple days...
Try changing the cap to a Delco 10409635 (RC27) or STANT 10230 rated at 16PSI.
The fill neck could be borked but I'd replace the cap first. It's cheap and you can always order the Aluminum radiator on Tuesday or Wednesday if you still want it.

Gregski 10-30-2016 07:00 PM

Re: Restoring Rusty
 
3 Attachment(s)
so my plastic [ahem] PVC Mityvac MV4560 coolying system pressure test kit arrived from Amazon today, they deliver on Sunday's who knew?!

$50 bucks

Gregski 10-30-2016 07:01 PM

Re: Restoring Rusty
 
1 Attachment(s)
so the first thing I did was test the radiator cap, and it holds 15 PSI easy, no leaks, hmmm

this seems like a pretty nice cheap kit for an amateur, I'm sure the metal one would be better for a many uses, but for a one time deal, it does fine

rusty76 10-30-2016 07:46 PM

Re: Restoring Rusty
 
Yogis been around a long time. Mostly known in the street rod world. Cool little you got there.


All times are GMT -4. The time now is 03:18 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com