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Pressure check a Hemi or whatever block #2454897 02/21/18 01:17 AM 02/21/18 01:17 AM
Joined: Jan 2004 Posts: 8,233 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,233 fredericksburg,va	Got an idea of how I should do this but checking with you guys on your ways.

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2454901 02/21/18 01:21 AM 02/21/18 01:21 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	You can bolt it together with the heads and put a pressure inlet port and gauge on block plates on the water pump inlet and outlets(both sides) and apply air pressure and get a spray bottle of soapy water and go searching all over the heads and block I've used a torque plate to pressure check aluminum heads that had been welded on, that works also Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pressure check a Hemi or whatever block [Re: Cab_Burge] #2454911 02/21/18 01:45 AM 02/21/18 01:45 AM
Joined: Jan 2004 Posts: 8,233 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,233 fredericksburg,va	Originally Posted By Cab_Burge You can bolt it together with the heads and put a pressure inlet port and gauge on block plates on the water pump inlet and outlets(both sides) and apply air pressure and get a spray bottle of soapy water and go searching all over the heads and block I've used a torque plate to pressure check aluminum heads that had been welded on, that works also So you use air instead of water? At what pressure? Would an engine "see" 20# or more pressure running?

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2454919 02/21/18 02:11 AM 02/21/18 02:11 AM
Joined: Oct 2005 Posts: 8,862 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,862 Ontario, Canada	Air pressure works. But you want to pressure test it assembled. If you have one, a leakdown tester will show pressure loss. A squirt bottle with water only works on external surfaces but you can have internal leaks. 20 lbs is plenty - rad caps are rated at what ... 15 psi? So you don't need much more than that.

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2454923 02/21/18 02:23 AM 02/21/18 02:23 AM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	Use my pressure check kit. http://arengineering.com/products/pressure-checking-kit-bb-and-hemi/

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2454925 02/21/18 02:33 AM 02/21/18 02:33 AM
Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york hemi-itis I Live Here
hemi-itis I Live Here Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york	Engine in car or bare block on the stand? HEMI-ITIS has no cure. My condition is fully BLOWN!!

Re: Pressure check a Hemi or whatever block [Re: AndyF] #2454966 02/21/18 05:30 AM 02/21/18 05:30 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Originally Posted By AndyF Use my pressure check kit. http://arengineering.com/products/pressure-checking-kit-bb-and-hemi/ That's what I'm talking about I made my own out of 3/8 plate steel Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pressure check a Hemi or whatever block [Re: hemi-itis] #2454967 02/21/18 05:32 AM 02/21/18 05:32 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Originally Posted By hemi-itis Engine in car or bare block on the stand? Your choice, it will, or should test the same either way Probably easier on the stand so you can look at the back, sides and front of the motor on the stand Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2454969 02/21/18 05:35 AM 02/21/18 05:35 AM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	Originally Posted By cudaman1969 Originally Posted By Cab_Burge You can bolt it together with the heads and put a pressure inlet port and gauge on block plates on the water pump inlet and outlets(both sides) and apply air pressure and get a spray bottle of soapy water and go searching all over the heads and block I've used a torque plate to pressure check aluminum heads that had been welded on, that works also So you use air instead of water? At what pressure? Would an engine "see" 20# or more pressure running? I don't use water in the block or heads Air pressure and soapy water, on the aluminum heads that had cracks and had been welded on already I used 30+ Lbs. of air pressure to make sure they where sealed up after having those welds welded up over again Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455050 02/21/18 01:09 PM 02/21/18 01:09 PM
Joined: Aug 2009 Posts: 304 Portland, Oregon D Digger73 enthusiast
Digger73 enthusiast D Joined: Aug 2009 Posts: 304 Portland, Oregon	Not to get off subject but, how long should the pressure hold in the system without any loss? Digger73 (Mike( I live with fear everyday but, sometimes she lets me race!

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455058 02/21/18 01:29 PM 02/21/18 01:29 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton master
Clanton master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	I had rust in the cylinder and I did what I had to to check it. Block check GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455060 02/21/18 01:35 PM 02/21/18 01:35 PM
Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><]	Unless the leak/crack/hole is really bad, a cast iron block or cylinder head will most likely not show a leak unless you can heat it up. Pressure checking one cold and it not showing any leakage doesn't prove anything. 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

Re: Pressure check a Hemi or whatever block [Re: an8sec70cuda] #2455063 02/21/18 01:42 PM 02/21/18 01:42 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton master
Clanton master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	Originally Posted By an8sec70cuda Unless the leak/crack/hole is really bad, a cast iron block or cylinder head will most likely not show a leak unless you can heat it up. Pressure checking one cold and it not showing any leakage doesn't prove anything. There have been posts with heat coils going into the block moving hot water.I pre heated the block,put in hot water then seald and continued heating it GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455079 02/21/18 02:14 PM 02/21/18 02:14 PM
Joined: Mar 2006 Posts: 9,824 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,824 MI, usa	As to pressure test with no loss. I recently left my Cummins over 24 hours with no pressure lost. Yet when it was warm it would weep coolant that I could smell but not ever see. Turned out I left the head bolt at the very rear under the cowl finger tight. I'd use 30 psi with soap water. Doug

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455172 02/21/18 05:24 PM 02/21/18 05:24 PM
Joined: Oct 2005 Posts: 8,862 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,862 Ontario, Canada	Quote: Not to get off subject but, how long should the pressure hold in the system without any loss? Uh, forever. Anything less would be a leak, right ?!?!?

Re: Pressure check a Hemi or whatever block [Re: an8sec70cuda] #2455173 02/21/18 05:26 PM 02/21/18 05:26 PM
Joined: Aug 2003 Posts: 43,123 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,123 Bend,OR USA	I've used a propane torch to heat up cast iron to see a crack better, it does make them rascals appear a lot easeir Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pressure check a Hemi or whatever block [Re: hemi-itis] #2455216 02/21/18 06:54 PM 02/21/18 06:54 PM
Joined: Jan 2004 Posts: 8,233 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,233 fredericksburg,va	Originally Posted By hemi-itis Engine in car or bare block on the stand? On a stand, bare block. I was going to make a head plate of 1/4 aluminum but the kit said without a head it needed a torque plate.? I figured 40 psi would show any cracks, no mater how hot it is. But that's why I'm asking.

Re: Pressure check a Hemi or whatever block [Re: cudaman1969] #2455218 02/21/18 07:02 PM 02/21/18 07:02 PM
Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><]	The pressure test rack I used at the machine shop would go to 35 psi (IIRC) and it wouldn't make a crack bubble on a cold cast iron head...one we knew was leaking on the car. 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

Re: Pressure check a Hemi or whatever block [Re: Digger73] #2455262 02/21/18 08:33 PM 02/21/18 08:33 PM
Joined: Oct 2010 Posts: 2,405 Ambridge, Pa. R rickraw top fuel
rickraw top fuel R Joined: Oct 2010 Posts: 2,405 Ambridge, Pa.	Shouldn't leak at all if sealed up good. May have a little fluctuation with temperature change.

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