Hitting on all eight cylinders
Group: Forum Members
Last Active: 12 Years Ago
Posts: 5,
Visits: 27
|
Alright guys...
Did the ATF trick and rechecked the compression 90psi in most cylinders... Hooked up gravity feed tank and cranked over and everything started on fire... Found leak in carb... Took carb off recleaned again and placed on car....
Tried one last time she cranked over and I pumped her a few times and she fired up and started idling like she wanted to be alive again... Thanks for all your help so far I will be back and share the knowledge I have gained preserving my piece of the past thanks again
Spencer
|
Group: Forum Members
Last Active: 11 Years Ago
Posts: 96,
Visits: 1.3K
|
Altitude will inversely affect the readings.
Edit - and Ted reminded us that a misaligned or badly worn timing chain could lower compression readings.
|
Group: Administrators
Last Active: Yesterday
Posts: 7.4K,
Visits: 205.6K
|
The rule of thumb for compression readings is that they all be within 10% of each other. Your numbers far exceed this so you’ll need to dig deeper. Putting air on the cylinders will help determine if you have valve issues or piston ring problems at the cylinders. Even an engine with 8.0:1 cr will have 130 psi pressure at the cylinders during cranking so you’re numbers need to be higher. A consistent 90 psi across the board should at least get you cranked up though. .. Here’s the link to the post on pressurizing the cylinders with oil to help free up the rings. .. http://forums.y-blocksforever.com/FindPost67168.aspx
 Lorena, Texas (South of Waco)
|
Group: Forum Members
Last Active: Last Month
Posts: 442,
Visits: 3.8K
|
sounds like its cranking good i still think those pressures are low http://forums.y-blocksforever.com/Topic67162.aspx?Keywords=stuck+rings#bm67224 read the response from T Eaton. maybe a spoonful of ATF(medicine ) will do the trick stuey
|
Hitting on all eight cylinders
Group: Forum Members
Last Active: 12 Years Ago
Posts: 5,
Visits: 27
|
So I have 40 to 90 psi all over 90-40-40-40 and 60-40-60-40 ??? No plugs throttle open...
Why would this be all over the place when I had solid 30psi on old head gaskets ????
And is this spinning enough to get oil to help seal the pistons up... My thought is the rings might be a little froze until it runs for a bit but I dono anymore
What you guys think from that video
|
Hitting on all eight cylinders
Group: Forum Members
Last Active: 12 Years Ago
Posts: 5,
Visits: 27
|
|
Hitting on all eight cylinders
Group: Forum Members
Last Active: 12 Years Ago
Posts: 5,
Visits: 27
|
I'm in the US in Idaho...
Counterclockwise is used on distributior
Check compression with carb off and plugs in... Can do it the otherway tonight....
Per the video she is so close to running
|
Group: Forum Members
Last Active: 10 Years Ago
Posts: 42,
Visits: 333
|
My guess is the compression is to low but double check firing order as the other guys have said see what happens
1962 f250 currently heartless 1961 country squire 292 3 speed 1963 galaxie 390 powered 1976 f250 4wd 390 powered
|
Group: Forum Members
Last Active: 11 Years Ago
Posts: 96,
Visits: 1.3K
|
It is best to open the choke when running a compression test.
|
Group: Forum Members
Last Active: 3 hours ago
Posts: 4.6K,
Visits: 38.1K
|
Counter clockwise firing order? Did you check compression with all plugs out and the carb open? That will give you a more accurate reading. If compression is that low it may be very difficult to start. Chuck
Y's guys rule! Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.
  MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi) Manchester, New Hampshire
|