couch22k
|
| posted on 11/4/11 at 08:33 PM |
|
|
Pinto compression help
I was hoping somebody could help. My 2.1 pinto have been breathing really heavy, so today I was advised to do a compression test and found out the
no.3 was running low.
No. 1 2 and 4 are running at about 160 and 3 is running at around 75(psi I think).
I was told to first check the gaps on the rockers with a feeler gauge and they all seem to be spot on.
Before I start taking the head of I was wondering if anyone else has had the same problem and what would be next thing to check out.
Hope i've explained this ok as I don't really know what im talking about. 
Cheers
Steve
|
|
|
|
|
jacko
|
| posted on 11/4/11 at 08:44 PM |
|
|
Head off am afraid could be a head gasket going don't think it will be a valve if you have some compression
Jacko
|
|
|
couch22k
|
| posted on 11/4/11 at 08:46 PM |
|
|
quote:
Originally posted by jacko
Head off am afraid could be a head gasket going don't think it will be a valve if you have some compression
Jacko
Thats what im hoping for. Cheers Jacko
|
|
|
perksy
|
| posted on 11/4/11 at 08:48 PM |
|
|
Couple of squirts of engine oil in the bad cylinder and re-do the test (Wide open throttle)
If the compression raises notably you will know that the issue is with the bottom half of the engine (Rings etc)
a Leak down test is better, but not everybody has the kit in their garage
|
|
|
britishtrident
|
| posted on 11/4/11 at 09:20 PM |
|
|
Deck chairs on the Titanic
75psi on one cylinder and pumping out oil = at best a broken or stuck top piston ring.
Engine is already well over bored best way out is find another Pinto and use that as a starting point.
[Edited on 11/4/11 by britishtrident]
|
|
|
britishtrident
|
| posted on 11/4/11 at 09:29 PM |
|
|
quote:
Originally posted by jacko
Head off am afraid could be a head gasket going don't think it will be a valve if you have some compression
Jacko
With those symptoms it sure ain't a head gasket.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
snapper
|
| posted on 12/4/11 at 08:41 AM |
|
|
You can bore a 205 block with care to 94mm
So a small increase above 93mm would not be an issue
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
|
|
|
jacko
|
| posted on 20/4/11 at 09:03 PM |
|
|
Any news as to what it was ?
Jacko
|
|
|
couch22k
|
| posted on 28/4/11 at 06:04 PM |
|
|
quote:
Originally posted by jacko
Any news as to what it was ?
Jacko
Yes mate its was a cracked piston 
Had new bottom end made up with a spare 205 block I had.
Cheers all
|
|
|
