472 hemi..issues, follow up hot472 hemi
#2623419
02/19/19 07:33 PM
02/19/19 07:33 PM
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Joined: Aug 2003
Posts: 3,101 cincinnati ohio
mcat4321
OP
master
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OP
master
Joined: Aug 2003
Posts: 3,101
cincinnati ohio
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the hemi that is running hot all the time...i tore into the hemi today, as my previous post was all with visual inspection, come to find out it is an all aluminum engine,painted . with a solid roller cam(unknown specs.) the past life is unknown.. i cut the filter, it looks good, no metal i did a comp test all real similar..120ish 1st pump 145ish 3rd pump . i did a leak down and it ranged from 38-44% on a warm engine. when idling smoke puffs from both breathers and dip stick tube, i let it idle until the t-stat opened 180 then let it cool a bit before leak down, so if this was your hemi.. what would you do next
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Re: 472 hemi..issues, follow up hot472 hemi
[Re: mcat4321]
#2623456
02/19/19 09:41 PM
02/19/19 09:41 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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Since it’s together and running, I’d make as sure as I could the cooling system was functioning correctly before I started tearing stuff apart.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 472 hemi..issues, follow up hot472 hemi
[Re: mcat4321]
#2623659
02/20/19 12:45 PM
02/20/19 12:45 PM
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Joined: Mar 2006
Posts: 2,675 Mt. Eden Ky.
Hemi Allstate
master
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master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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My World aluminum block required a head gasket that had different coolant holes on the bottom row. I got the correct part no. From Rich Nedbal AKA Mopar Rich. I had to order them from Cometic.
Mark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: 472 hemi..issues, follow up hot472 hemi
[Re: Hemi Allstate]
#2623839
02/20/19 06:27 PM
02/20/19 06:27 PM
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Joined: Jan 2003
Posts: 13,376 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
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My World aluminum block required a head gasket that had different coolant holes on the bottom row. I got the correct part no. From Rich Nedbal AKA Mopar Rich. I had to order them from Cometic.
Mark Sounds like the KB gaskets also. The KB block has the outer row of steam holes relocated away from the bore requiring a special head gasket and relocating the holes in the heads.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: 472 hemi..issues, follow up hot472 hemi
[Re: an8sec70cuda]
#2623951
02/20/19 10:25 PM
02/20/19 10:25 PM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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My World aluminum block required a head gasket that had different coolant holes on the bottom row. I got the correct part no. From Rich Nedbal AKA Mopar Rich. I had to order them from Cometic.
Mark Sounds like the KB gaskets also. The KB block has the outer row of steam holes relocated away from the bore requiring a special head gasket and relocating the holes in the heads. I had a head gasket sealing problem with the only KB street hemi block I assembled for a customer due to the sleeve height being to high at first and then those dang cooling water holes being so close the sleeves in the block I ended up having to take the block and heads to SCE gasket company in Lancaster, CA to have them make me some copper head gaskets that would work properly All the other head gaskets I had bought and tried where for the race KB blocks, not the street block
Last edited by Cab_Burge; 02/20/19 10:26 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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