Re: How much is too much hard block
[Re: Al_Alguire]
#2239497
01/23/17 12:12 AM
01/23/17 12:12 AM
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Joined: Sep 2015
Posts: 1,096 Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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FWIW our filled block has been together and in the car since 2001 and never had any issues. I run an oil cooler for insurance, never have seen oil temps over 230-240 and that is only after sustained highway jaunts. Car make 750+ HP fwiw as well and we never ran it without the cooler either. Saw no need wanted it just to make sure. Spot on AL. This is exactly where I am with my street 528 Cuda, as you say sustained highway use get the temp up. I often wonder how many people are out there without a oil temp gauge ?? Dave If you don't run a cooler with all that fill your first 1/2 hour drive will see 300 on the oil temp.
1963 Plymouth Max Wedge 1971 Barracuda
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Re: How much is too much hard block
[Re: mopar dave]
#2239625
01/23/17 02:16 AM
01/23/17 02:16 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I have a few gauges in the car. oil and trans temp are just a couple. Once I get it on the road I will let ya know what the temps go to before I add the cooler. Can I use a B&M supercooler for oil cooler? Look at a Hayden oil cooler... a trans cooler wont flow enough... the diameter isnt big enough.. the one block I bought had a crack in a cyl.. I was gonna just sleeve the one cyl but when I got around to it I busted that cyl out to see it was a filled block... the fill did shrink on it... dont know what brand it was filled with.. it wasnt much but it sure wasnt stopping a wall from cracking
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Re: How much is too much hard block
[Re: ccdave]
#2239630
01/23/17 02:29 AM
01/23/17 02:29 AM
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Joined: Oct 2003
Posts: 7,506 Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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Does the Hard Block indeed shrink and seperare from the cylinder walls after a few heat cycles as posted earlier? The manufacturers I looked at claim it does not????? Ya, they all claim there's doesn't shrink. I'd like to see proof. My machinist claims they don't shrink. True on the oil cooler thing "it aint rocket science". Many tow packages include them - most police package cars have them. Don't know how well these factory engineered packages would work under our type of racing conditions though. Pressure drop is definitely a consideration. FWIW, oil pressure on fire up @ idle with my 408 = 70psi. At 180 oil temp @ idle = 35psi. At 220 oil temp = 25psi.(10W30 synthetic).
Fastest 300
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Re: How much is too much hard block
[Re: Crizila]
#2239635
01/23/17 02:38 AM
01/23/17 02:38 AM
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Joined: Aug 2003
Posts: 43,721 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,721
Bend,OR USA
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All cements based fillers shrink I've used Moroso block filler once and it shrank away from one freeze plug after it pushed it out enough to need replacing I've heard that "Hard Block" brand filler is a epoxy filler and doesn't need to cure 30 days and it doesn't shrink also I also heard it does expand and shrink I haven't used it so I don't know about it either way
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: How much is too much hard block
[Re: Cab_Burge]
#2239636
01/23/17 02:42 AM
01/23/17 02:42 AM
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Joined: Feb 2005
Posts: 20,272 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,272
PA.
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Over my 40 plus years of racing I wonder how much I've saved by not buying concrete to fill my blocks. LOL
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67
Livin and lovin life one day at a time
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Re: How much is too much hard block
[Re: dizuster]
#2242448
01/27/17 08:40 PM
01/27/17 08:40 PM
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Joined: Feb 2007
Posts: 5,080 organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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1) I filled the block AFTER it was machined... checking the bore before and after it didn't move hardly SQUAT...
I feel like with everything, there is a lot of people perpetuating old wives tales from things they've heard.
i have done this as well... on a tall deck big block, tall fill (bottom of the water pump holes). NO DIFFERENCE in the before and after measurements. at all. that engine lives on as we speak.
for what is the good life if not doing things thoughtfully?
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Re: How much is too much hard block
[Re: mopar dave]
#2324535
06/21/17 03:21 AM
06/21/17 03:21 AM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Not yet. Just installing 511 in the car now. Gonna run without a cooler to start. Will add cooler later. FWIW, I talked to Jason Pettis who builds/tunes some of the baddest cars around and he said "Good luck keeping the oil cool on the street even w/a cooler"..........1/2 fill maybe but full in his experience is hard to do if not impossible........
Last edited by Thumperdart; 06/21/17 03:24 AM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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