|
|
|
Re: How strong is a sleeve in a stock block?
[Re: fbs63]
#2053595
04/13/16 12:58 PM
04/13/16 12:58 PM
|
Joined: Sep 2010
Posts: 66
Oklahoma
66 Belvedere
member
|
member
Joined: Sep 2010
Posts: 66
Oklahoma
|
Stock eliminators usually use a larger bore block and sleeve it down. For example a 400 block sleeved to 383 bore size. You end up with a nice ridgid block because the cylinder wall thickness is INCREASED. Taking a 440 to 4.400 bore would take the majority of the original cylinder wall out. You would end up with a block that has no joining material between the cylinders. Not ideal for strength plus you have the stresses of 4 press fits. Boring it enough to clean up and relieve the cylinder walls at the top to aid flow will result in a much better engine. I agree. I was also asking why, and what his goal is. Ray
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: sgcuda]
#2053900
04/13/16 10:10 PM
04/13/16 10:10 PM
|
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
OP
master
|
OP
master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
|
I agree. I was also asking why, and what his goal is.
Ray
I wanted the extra cubes plus to unshroud my 2.25 intake valves that sit above a 4.380 bore already. I was thinking that there might be stronger materials available these days that would still allow the cylinders to have more strength than the original block I have. More worried about cracking a bore than cracking a web. Aluminum rods and aluminum caps should go a long way in protecting the bottom end. Final combination would be 4.40 bore by 4.40 stroke.
[image][/image]
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: sgcuda]
#2053981
04/13/16 11:54 PM
04/13/16 11:54 PM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
You could do a partial fill then have it bored for the bigger bore with sleeves. I say pour it first because that tend to shrink back a bit from the bores.. if you pour it first then have it sleeved it would be tight to give more support since your talking a bigger sleeve........ JMO EDIT Might even think a tall fill since its race only 
Last edited by MR_P_BODY; 04/13/16 11:57 PM.
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: HardcoreB]
#2054240
04/14/16 01:21 PM
04/14/16 01:21 PM
|
Joined: Aug 2005
Posts: 6,008
Salem
Grizzly
Moparts Proctologist
|
Moparts Proctologist
Joined: Aug 2005
Posts: 6,008
Salem
|
I posted this question on Yellow bullet some time ago...maybe worth a look under same name. What I gathered is at best it's a cap shoot and many capable shops argued which method was best. You're loosing column strength doing all 8 which may be corrected by brazing it all together afterward. ..And I used the word maybe. I've been fixing many things in my years and I believe there is always a way to skin a cat. My conclusion is in agreement with some here...get a better block. I planned on skinning my cat with Siamese sleeves. 
Mo' Farts
Moderated by "tbagger".
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: sgcuda]
#2054304
04/14/16 03:18 PM
04/14/16 03:18 PM
|
Joined: Oct 2007
Posts: 4,209
New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,209
New York
|
A question that I stopped asking because:
1. I never got an answer
2. it clearly made the clerk/machinist uncomfortable
If the sleeve isn't flanged (very rare now) the only force holding the sleeve in place is a light press fit (not rosette welding, splines, pins etc.).
Since the combustion pressure is at least 700 psi, what prevents gas pressure from forcing the sleeve down in the cylinder except the head gasket?
How much clamping force do the bolts exert against the sleeve as opposed to the deck?
Boffin Emeritus
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: polyspheric]
#2054398
04/14/16 06:33 PM
04/14/16 06:33 PM
|
Joined: Jan 2003
Posts: 75,066
U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,066
U.S.S.A.
|
A question that I stopped asking because:
1. I never got an answer
2. it clearly made the clerk/machinist uncomfortable
If the sleeve isn't flanged (very rare now) the only force holding the sleeve in place is a light press fit (not rosette welding, splines, pins etc.).
Since the combustion pressure is at least 700 psi, what prevents gas pressure from forcing the sleeve down in the cylinder except the head gasket?
How much clamping force do the bolts exert against the sleeve as opposed to the deck? There should be a step at the bottom of the bore, that is what holds the sleeve from going lower, if there is no top flange ...
running up my post count some more .
|
|
|
Re: How strong is a sleeve in a stock block?
[Re: JohnRR]
#2054475
04/14/16 07:30 PM
04/14/16 07:30 PM
|
Joined: Jan 2004
Posts: 8,299
fredericksburg,va
cudaman1969
master
|
master
Joined: Jan 2004
Posts: 8,299
fredericksburg,va
|
A question that I stopped asking because:
1. I never got an answer
2. it clearly made the clerk/machinist uncomfortable
If the sleeve isn't flanged (very rare now) the only force holding the sleeve in place is a light press fit (not rosette welding, splines, pins etc.).
Since the combustion pressure is at least 700 psi, what prevents gas pressure from forcing the sleeve down in the cylinder except the head gasket?
How much clamping force do the bolts exert against the sleeve as opposed to the deck? There should be a step at the bottom of the bore, that is what holds the sleeve from going lower, if there is no top flange ... The guy I talked too used top flange, a lip in the deck, the reason to deck after its done. He said it gives more area for head gasket and head to seal, stronger too. High nickel sleeves, much stronger then the block material.
|
|
|
|
|
|
|
