Previous Thread
Next Thread
Print Thread
Adding "grout" to a block #3082596
10/02/22 10:52 PM
10/02/22 10:52 PM
Joined: Jun 2016
Posts: 900
Washington
H
hemienvy Offline OP
super stock
hemienvy  Offline OP
super stock
H

Joined: Jun 2016
Posts: 900
Washington
Has anyone ever turned the block upside down and grouted only the upper part of the cylinders ? Maybe 1 or 2 inches ?

You would have to use a block deck plate, then when finished drill through the grout for the coolant openings.

Re: Adding "grout" to a block [Re: hemienvy] #3082604
10/02/22 11:15 PM
10/02/22 11:15 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Why distort the cylinder walls now? work
When you say "Grout" what brand and type are you thinking of using?
I won't consider using any block filler due to the different temperature of the cylinder walls were there is "grout or cement filler" versus where there is coolant work tsk scope
With the better market now on new thicker race blocks why not start with a better block instead of trying to patch up an old stock block twocents work up

Last edited by Cab_Burge; 10/04/22 06:58 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Adding "grout" to a block [Re: Cab_Burge] #3082649
10/03/22 09:19 AM
10/03/22 09:19 AM
Joined: Sep 2014
Posts: 4,457
Washington
M
madscientist Offline
master
madscientist  Offline
master
M

Joined: Sep 2014
Posts: 4,457
Washington
That’s the LAST place you want block filler. That’s where most of the heat is dumped from the piston though the rings. I think that’s a really bad idea.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: Adding "grout" to a block [Re: madscientist] #3082670
10/03/22 10:33 AM
10/03/22 10:33 AM
Joined: May 2019
Posts: 161
W. Pa
U
usp4u Offline
member
usp4u  Offline
member
U

Joined: May 2019
Posts: 161
W. Pa
I would not want the top half of my bores to be that much hotter than the lower half.

Re: Adding "grout" to a block [Re: hemienvy] #3082675
10/03/22 10:45 AM
10/03/22 10:45 AM
Joined: Jun 2015
Posts: 310
Northeast Indiana
7
73DAD Offline
enthusiast
73DAD  Offline
enthusiast
7

Joined: Jun 2015
Posts: 310
Northeast Indiana
I'm going to assume you have a block that has been heavily decked. Aftermarket blocks have very thick decks like you're trying to achieve, but they can get away with it because of cast iron's ability to transfer heat. Your typical block filler works much better as an insulator for heat transfer rather than a conductor. If you were trying to save a hemi block or something, maaaybe you could get away with molten aluminum poured in since it would be a little better for heat transfer, but I'd only want to try it on block that would be junk otherwise.

Disclaimer: I'm no expert, just speculating.

Last edited by 73DAD; 10/03/22 10:46 AM.
Re: Adding "grout" to a block [Re: hemienvy] #3082677
10/03/22 10:55 AM
10/03/22 10:55 AM
Joined: Apr 2003
Posts: 3,496
Tulsa, Oklahoma
340Cuda Offline
master
340Cuda  Offline
master

Joined: Apr 2003
Posts: 3,496
Tulsa, Oklahoma
Not directly related to your question but...

If I remember correctly is the past we managed to split cylinder walls on stock small blocks that were grouted, one a half fill the other a full fill.

These were very high compression engines, I think one was 16-1 the other 15-1.

No problems with R blocks.

Last edited by 340Cuda; 10/03/22 10:55 AM.
Re: Adding "grout" to a block [Re: 340Cuda] #3082758
10/03/22 12:27 PM
10/03/22 12:27 PM
Joined: May 2005
Posts: 1,944
Apollo, PA.
B1MAXX Offline
top fuel
B1MAXX  Offline
top fuel

Joined: May 2005
Posts: 1,944
Apollo, PA.
I would believe it I sleeved a small block at 4.28 outside and there was pin holes

Re: Adding "grout" to a block [Re: 73DAD] #3082976
10/03/22 08:00 PM
10/03/22 08:00 PM
Joined: Jun 2016
Posts: 900
Washington
H
hemienvy Offline OP
super stock
hemienvy  Offline OP
super stock
H

Joined: Jun 2016
Posts: 900
Washington
I'm not planning on doing this grout work with any block I have. No current need.

I was just thinking. I have read that sometimes the cylinder walls will sonic-check thin up at the top, which is where the pressure is highest.

True, it's also where you need cooling the most.

I have no experience with the stuff, I don't know how rigid, or strength-enhancing, it really is.

I agree, a true heavy duty block would be much preferable.

Re: Adding "grout" to a block [Re: hemienvy] #3083045
10/03/22 09:41 PM
10/03/22 09:41 PM
Joined: Dec 2016
Posts: 1,110
Usa
A
A39Coronet Offline
super stock
A39Coronet  Offline
super stock
A

Joined: Dec 2016
Posts: 1,110
Usa
You can't drill the cooling passages out from the water pump openings, you'll run right into #1/#2 cylinder. I know because we overfilled a block and I tried everything from acid to drilling it out. Lesson learned, make sure the guy watching the pour has his glasses on cause once it's in there it ain't coming out.


Follow my G3 Hemi Barracuda build on Youtube
https://www.youtube.com/watch?v=XSDAWczXoZw&list=PLTus_wQu8POADHEeJNJp2nr4NMHEyB9EK

2015 Tri-State Stock Super Stock Champion
2017 Monster Mopar Pro Winner
2018 Monster Mopar No Box Winner
Re: Adding "grout" to a block [Re: A39Coronet] #3083046
10/03/22 09:46 PM
10/03/22 09:46 PM
Joined: Jun 2016
Posts: 900
Washington
H
hemienvy Offline OP
super stock
hemienvy  Offline OP
super stock
H

Joined: Jun 2016
Posts: 900
Washington
A39, I never thought of that !

Re: Adding "grout" to a block [Re: hemienvy] #3083274
10/04/22 03:48 PM
10/04/22 03:48 PM
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
C
CMcAllister Offline
Mr. Helpful
CMcAllister  Offline
Mr. Helpful
C

Joined: Dec 2005
Posts: 11,408
Fulton County, PA
If I were going to do that, I would fill the whole thing. Not advisable for a gasoline powered, bracket application. I've filled them to the bottom of the water pump holes in the past.

It's a bandaid. Something else is going to move or break at some point. We're just trying to keep the cylinders round.

Last edited by CMcAllister; 10/04/22 03:49 PM.

If the results don't match the theory, change the theory.
Re: Adding "grout" to a block [Re: hemienvy] #3085115
10/11/22 01:01 PM
10/11/22 01:01 PM
Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
HardcoreB Offline
master
HardcoreB  Offline
master

Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
Originally Posted by hemienvy
Has anyone ever turned the block upside down and grouted only the upper part of the cylinders ? Maybe 1 or 2 inches ?

You would have to use a block deck plate, then when finished drill through the grout for the coolant openings.

As a39 Coronet said you can't redrill it in that way. and if you do fill it conventionally TOO HIGH, you'll block coolant flow thru the block at the blind headbolt bosses. Maybe that is what's been conveyed and understood in his reply?







Powered by UBB.threads™ PHP Forum Software 7.7.1