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Username Post: Compression test without intake manifold        (Topic#374122)
Dans55 
Newbie
Posts: 37

Reg: 03-03-22
12-03-23 05:54 PM - Post#2864717    

I want to do a compression test after I put my cylinder head back on. Is it necessary to have the intake manifold installed? I have a oil printer rod that I used at one time with a drill. I plan on running the pump around 5 minutes before I do the test.then another 5 minutes before I do the second head. Think that will work?



 


Don57 
"18th Year" Silver Supporting Member
Posts: 1435
Don57
Age: 73
Loc: Illinois
Reg: 04-28-00
12-03-23 06:35 PM - Post#2864719    
    In response to Dans55

I've never done it but I think it will work, as long as the valves are operational.

Don
1957 3200 Stepside


 
bobb 
Super Senior Member
Posts: 6610

Loc: paradise
Reg: 09-05-03
12-04-23 08:09 AM - Post#2864724    
    In response to Dans55

compression test will work need the correct tool for oil prime

70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails.


 
Shepherd 
Valued Contributor
Posts: 3340

Loc: Lake George, NY
Reg: 11-11-15
12-04-23 08:56 AM - Post#2864725    
    In response to bobb

Yes you can do a compression test like that, as mentioned. But, 5 minutes priming is unnessary, maybe 2 minutes after pressure is achieved. Important to turn the engine 180 from tdc to get to all bearings.



 
OldRustyWrench52 
Newbie
Posts: 22

Loc: So. Florida
Reg: 02-23-20
04-08-24 04:35 PM - Post#2868712    
    In response to Dans55





Edited by OldRustyWrench52 on 04-08-24 04:39 PM. Reason for edit: No reason given.

 
OldRustyWrench52 
Newbie
Posts: 22

Loc: So. Florida
Reg: 02-23-20
04-08-24 04:38 PM - Post#2868713    
    In response to Dans55

How about using a piece of pvc pipe as a spacer that would closely duplicate the intake manifold's thickness and hole diameter? Then the distributor would run the oil pump while doing the compression test. You may need something to run the length of the block to support the piece of pvc.



 


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