Manafoild GasBlown out ??????

Nov 6, 2014
14
0
Wayne
Every thing is new or squeaky clean. I took the cover off and blew air in the passenger side valve cover breather hose. No 2nd breather hose, just a 2 oil baffle/oil separator in the drivers side rocker over.

So I found the issue I think, passenger rear cylinder ( 7 I think ) has air just blowing by it but compression check read the same as the others. Did a ghetto leak down test, pump a 100psi in there and the air was just coming out of there. Went in to the oil pan and out the cam/lifters area. Had to block off all the slots above the cam and pack rags in there to tell. Sure enough, the 5/8 hose I put in the rear slot around the cam, had air coming out of it.

I have only done two leak down test but 5 was cranking the engine when 100psi was pumped in there. Cloud barley hold the shaft with a wrench. 8 was not doing that at all. So all of them were holding 132-144 on 3 secs or 3 crank revolutions. Test of course could very so multiple test were done with the crank rotated a little each time to get an average. No lower the 132 and no higher then 160 but that was only one cylinder; one time.

I guess its time to pull the engine out again..... Thinking about cutting out some tranny bolt holes if it is easy out of the Firewall..... LOL Pain In my royal ... With one hand to take out and put in .... Not excited about it.
 
Nov 6, 2014
14
0
Wayne
I think I found your two problems.

The ARP head studs are not the issue, nor the guy who checked them and other work. Rings are original and checked visually, stuff gets missed. That's all. Besides, can't conclude any thing until it is a fact. Still have to pull it out and test further.
 

jymmiejamz

Well-known member
Dec 5, 2004
6,010
362
36
Los Angeles, Ca
I'm going to go ahead and take a guess that the threads ripped out of the block or the nuts for the head bolts are loose on the studs. If you want to fix it more permanently the second time around, you can use the proper factory bolts.
 

discostew

Well-known member
Sep 14, 2010
7,745
1,026
Northern Illinois
If it was me I would pull the head and if I needed to see the rings I would drop the pan and get the piston out of that hole. You probably don't want to hear it but I agree with jimmie on the stock head bolts.