The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Links | Events | Features | Search | Hoo-Ya Shop
Stovebolt Supporter!
Indianapolis

Fabrications

Talk to Randy Domeck

See what they

can do

for you
!


Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Some New
Some Vintage
Many in Production

Check for details!

Will be updating all year around!


Who's Online Now
36 registered members (carbking, 32vld, bwilliams, CenCal53, carryall jerry, 2 invisible), 529 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums48
Topics106,686
Posts834,308
Members39,828
Most Online940
Apr 5th, 2017
Today's Birthdays
49chevy454, 61lorrie, Frantz, junebug909, Mark H, yllw1964
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 5 1 2 3 4 5
#215167 - Tue Sep 05 2006 04:27 PM My PB Blaster vs. Kroil test  
Builder  Offline
Shop Shark
Joined: Apr 2005
Posts: 3,494
Minnehaha County, South Dakota
Friday I brought home a 1957 Corvette engine. When I took it apart, the right bank of pistons were all stuck. One of the worst ones had a pile of white and yellow crystalized corrosion filling the cylinder. It reminded me of a severely corroded battery terminal. I decided to test the PB Blaster and Kroil on the motor to find out which one actually worked the best.

For the sake of clarity I will number the cylinders 1-2-3-4.

The two outside cylinders (1 and 4) had the most corrosion, and I assumed they would be the toughest pistons to remove. The two center cylinders were stuck and not quite as bad.

Cylinders 1 and 4 seemed to be the worse of the four, and I decided that since the Kroil was the most expensive I would give it the task of the worse cylinder (#1). I also chose to use kroil in the number 2 cylinder. PB Blaster was used in 3 and 4, with 4 being the worse of those two.

First I took a 2" wire wheel on my die grinder and removed as much rust and corrosion from the tops of the pistons and I cleaned the tops of the cylinders too. I then propped the block so the right bank of pistons were level.

I then sprayed Kroil into cylinders 1 and 2 until the top of the piston was covered, then the same to 3 and 4 with the PB Blaster. I noticed the PB Blaster was bubbling a little around the edges of the piston. It reminded me of carbonated beverage when you pour it in a glass. I let them both sit for about 18 hours. All the cylinders looked like they had the same amounts of penetrant on top of the pistons when I returned.

First I took a wood 2 x 2 and hammered the two center pistons (2 and 3) down into the bore. Both came loose relatively easy. I pounded them from the bottom and they both came out of the cylinders fairly easy and with reletively equal force.

I pounded on the tops of the 1 and 4 pistons to see if they would loosen up. The number 1 cylinder with Kroil started to move so I continued to work on it. I got it far enough down the cylinder to see where the rings has set against the cylinders. I took my wire wheel and cleaned up the cylinder again and then pounded the piston from the bottom and it came out of the cylinder.

I then turned my attention to #4 with the PB Blaster. I pounded and pounded on the top and bottom of the piston and it would not move. I sprayed some more PB Blaster on top of the piston and waited about 15 minutes and pounded again. The piston did not move.

I decided that I had better prop the motor up again and let it soak another day. I was already leaning towards the Kroil as being the better of the two, and I sprayed some Kroil in the #4 cylinder.

After 10 minutes I took the 2 x 2 and hit it with the hammer. The piston moved on the first hit. After moving the piston down far enough, I again cleaned the cylinder with the wire brush. I pounded from the bottom and got the piston out.

Now you could say that all the pounding on the #4 PB Blaster piston helped loosen it up before switching to the Kroil, but I really believe that the Kroil did a better job of penetrating and loosening up the pistons. I also looked at the cylinders afterwards too. The PB blaster cylinder showed deeper scores in the cylinder walls from the hard deposits left behind.

I also noticed the lubrication of the kroil was much higher. The PB Blaster seemed dryer and less oil like.

My test finds Kroil superior to PB Blaster.



#215168 - Tue Sep 05 2006 05:22 PM Re: My PB Blaster vs. Kroil test  
dad6timz  Offline
Shop Shark
Joined: Mar 2005
Posts: 638
simpsonville sc
I always thought PB was the best but I will now try Kroil. I'm always willing to try new stuff.


The crew that works on the \'42 --Sara, Hannah and Abby

#215169 - Tue Sep 05 2006 05:55 PM Re: My PB Blaster vs. Kroil test  
cletis  Offline
Joined: May 2001
Posts: 11,333
Parker County Texas
Thanks for the report. Very thorough and easy to comprehend.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
My TRUCKS website

#215170 - Tue Sep 05 2006 09:56 PM Re: My PB Blaster vs. Kroil test  
49 geezer  Offline
Shop Shark
Joined: Nov 2000
Posts: 767
Hedgesville, WV
Started using Kroil after my F in Law recommended it. They used it at the Celanese plant in western Maryland all the time. Never been happier with a product.


Country Roads, West (By God) Virginia
http://community.webshots.com/user/geezer

#215171 - Wed Sep 06 2006 03:05 AM Re: My PB Blaster vs. Kroil test  
Packrat  Offline
Wrench Fetcher
Joined: Aug 2006
Posts: 83
Upper Michigan
Where can a guy buy Kroil? I have s stuck 350 in my 48 coupe. I have kept the cylinders full of PB for the last 3 or 4 weeks and tried to turn the engine with a bar on the flywheel but no luck. I was trying to get away without pulling the heads. It looks like I might have to pull it apart and use the wooden block. I have tried to find Kroil but no luck. Don


"Sometimes my luck is so bad that if I bought a pumkin farm, halloween would probobly be outlawed."

#215172 - Wed Sep 06 2006 03:06 AM Re: My PB Blaster vs. Kroil test  
Packrat  Offline
Wrench Fetcher
Joined: Aug 2006
Posts: 83
Upper Michigan
Where can a guy buy Kroil? I have s stuck 350 in my 48 coupe. I have kept the cylinders full of PB for the last 3 or 4 weeks and tried to turn the engine with a bar on the flywheel but no luck. I was trying to get away without pulling the heads. It looks like I might have to pull it apart and use the wooden block. I have tried to find Kroil but no luck. Don


"Sometimes my luck is so bad that if I bought a pumkin farm, halloween would probobly be outlawed."

#215173 - Wed Sep 06 2006 06:23 AM Re: My PB Blaster vs. Kroil test  
J Lucas  Offline
Joined: Nov 2004
Posts: 2,633
South Omaha, Nebraska
I have been impressed with PB Blaster, looks like I will have to check out Kroil.

Thanks for the tip.

John


J Lucas





1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
1959 Chevy Apache 31 Fleetside
1959 Chevy Apache 32 Fleetside
1959 Chevy Viking 40

My Flicker Photos!


#215174 - Wed Sep 06 2006 06:55 AM Re: My PB Blaster vs. Kroil test  
Inky05  Offline
Shop Shark
Joined: May 2005
Posts: 1,178
N.E. Pennsylvania


IRWIPI 2005 Peoples Choice
Inky,
"It's not that I haven't done IT... It's that I haven't done IT yet."

--------------------
'48 1-1/2 ton Dump
'57 Chevy Panel
'59 Chevy 2 ton Dump

#215175 - Wed Sep 06 2006 01:43 PM Re: My PB Blaster vs. Kroil test  
Achipmunk  Offline
Joined: Dec 2001
Posts: 15,565
Boiling Springs, S. C. 29316
packrat, most industrial supplies carry it and "some" parts houses. I use to get it in a can like WD-40 but now I can only find it in a larger can and use my own squirt bottle. Its the best stuff around. The plant I worked at for many many years tried it all.....and ended up using Kroil to. I have a quart of it!!


1937 Chevy Pickup
1952 Chevy Panel
Pictures in my Photobucket
1950 Chevy Coupe

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile

#215176 - Wed Sep 06 2006 03:02 PM Re: My PB Blaster vs. Kroil test  
Billybolt  Offline
Shop Shark
Joined: Feb 2004
Posts: 652
Bay Area, CA
sea foam
Test this stuff out. Its expensive but good. It even sprays upside down.
Sea foam, Deep Creep


Page 1 of 5 1 2 3 4 5

Moderated by  cletis 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Links | Events | Features | Search | Hoo-Ya Shop
#-->
Powered by UBB.threads™ PHP Forum Software 7.6.0