stuck rings? - Alfa Romeo Bulletin Board & Forums

 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 04-20-2017, 03:32 PM Thread Starter
Registered User
 
Join Date: Nov 2002
Location: Tacoma, WA
Posts: 28
stuck rings?

My 74 GTV has 4000+ on new pistons and rings, but it's burning oil (no smoke) and fouling plugs. Would it be beneficial to add Rislone to help things along. I've been running it at 5500 for a mile or two and maybe that'll help.
Dan H is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 04-20-2017, 03:53 PM
Registered User
 
ARwrench's Avatar
 
Join Date: Feb 2009
Location: Transplanted from Holland to The Armpit of New Jersey
Posts: 1,874
Garage
Did you put in new valve guides when the pistons were replaced

“If you can't explain it simply, you don't understand it well enough”
Oo--V--oO There is a fine line between "Hobby" and "Mental Illness".
ARwrench is offline  
post #3 of 12 (permalink) Old 04-21-2017, 03:03 AM
Registered User
 
GTA R's Avatar
 
Join Date: Dec 2010
Location: Yorkshire, UK.
Posts: 488
Garage
If you're sure it's burning oil, then there must be smoke.
As ARwrench says, if you didn't fit new valve stem oil seals, (and they're goosed), then you won't see smoke under acceleration or cruising, only when you back off and put your foot down again, usually from motorway speeds, ie if you're cruising at 70mph, back off, then accelerate again, you would see blue smoke at the back.
Very unlikely to be stuck rings if the engine has only done 4000 mls.

GTA R
1963 Giulia Ti Super Rep almost finished.
GTA R is offline  
 
post #4 of 12 (permalink) Old 04-21-2017, 12:21 PM
Registered User
 
Alfajay's Avatar
 
Join Date: Jan 2005
Location: San Juan Capistrano
Posts: 7,982
Quote:
Originally Posted by GTA R View Post
Very unlikely to be stuck rings if the engine has only done 4000 mls.
Agree. And if the head wasn't rebuilt when the bottom end was done, then the increased compression of the new rings will draw oil past the valve guides and seals more aggressively.

I don't think Rislone will do anything for oil leakage past the guides and seals (though admittedly, I don't know a lot about the stuff).

Jay Mackro
San Juan Capistrano, CA

'63 Guilia spider
'65 Guilia Sprint GT
'67 Duetto
'91 164L

Last edited by Alfajay; 04-21-2017 at 06:19 PM.
Alfajay is online now  
post #5 of 12 (permalink) Old 04-21-2017, 05:09 PM
Registered User
 
Join Date: Jul 2013
Location: Bay Shore, New York
Posts: 219
Rule out an oil leak; the type that stops once you shut the car down.
tuttebenne is offline  
post #6 of 12 (permalink) Old 04-22-2017, 06:28 AM
Senior Member
Gold Subscriber
 
gigem75's Avatar
 
Join Date: Aug 2008
Location: East Texas
Posts: 5,538
How much oil is it using? qt per X miles
Do you know what brand of rings were used?
Are the plugs oil fouled and look black and greasy?
Speaking without knowing any thing else, which is usually dangerous, the majority of motors that burn oil after a rebuild and have great compression numbers have rings that didn't seat and no additive can fix that. The only thing that can fix that and it's a case of the cure being worse than the disease is to extremely overheat the motor in hopes that the glaze is burned off the cylinder walls.
It's gotten to the point where most folks use Hastings rings because they seat so well. They just don't last 80,000 miles like other rings. That's generally not a problem with our Alfas. But using Hastings rings isn't really the answer. Good assembly technique is. Most motors that burn oil do so because the liners were not thoroughly cleaned before assembly. They have to pass the white glove test otherwise the honing grooves are full of microscopic crud that instantly turns to glaze on the cylinder wall as soon as the motor is fired up. I use WD40 on the piston and cylinder walls during assembly although the cylinders being clean is the real key to the rings seating right off the bat. Hope that helps.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
74 GTV restored daily driver
71 Berlina in resto
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
gigem75 is offline  
post #7 of 12 (permalink) Old 04-22-2017, 10:05 AM Thread Starter
Registered User
 
Join Date: Nov 2002
Location: Tacoma, WA
Posts: 28
Thanks all for your input. The piston & ring rebuild was done by a very competent shop, as was the head work. Hastings rings were used. I was advised to run the heck out of it and that's what I'll try.
Dan H is offline  
post #8 of 12 (permalink) Old 04-22-2017, 11:56 AM
Senior Member
Gold Subscriber
 
gigem75's Avatar
 
Join Date: Aug 2008
Location: East Texas
Posts: 5,538
If it has just started burning oil that is a whole new deal. The above only applies if it has been that way since day one.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
74 GTV restored daily driver
71 Berlina in resto
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
gigem75 is offline  
post #9 of 12 (permalink) Old 04-22-2017, 02:31 PM
Registered User
 
Join Date: Feb 2006
Location: Blaine, WA
Posts: 8,075
Go to the Hastings web site. Find the section on breaking in rings. They have a specific break in procedure. I used that on my 164S breaking and had no issues. Their tech dept maybe able to give you some advice on how to handle it now.
Richard2 is offline  
post #10 of 12 (permalink) Old 04-23-2017, 11:30 AM
Senior Member
Gold Subscriber
 
Join Date: Jan 2007
Location: Los Angeles
Posts: 1,952
I have used Hasting rings for decades and always know that Alfa engines have large clearances for high RPM. I think that if you did not do a valve job then the oil is being burned from leaking through the exhaust valve guides. The intake valve guides use a seal, but there is no seal on the exhaust valve guides.
kuni123456 is online now  
post #11 of 12 (permalink) Old 04-24-2017, 04:48 PM
Registered User
 
Join Date: Jul 2013
Location: Bay Shore, New York
Posts: 219
Quote:
Originally Posted by kuni123456 View Post
The intake valve guides use a seal, but there is no seal on the exhaust valve guides.
!

I haven't had to disassemble the head on my car yet and therefore was unaware of that.
tuttebenne is offline  
post #12 of 12 (permalink) Old 04-24-2017, 06:45 PM
Senior Member
Gold Subscriber
 
gigem75's Avatar
 
Join Date: Aug 2008
Location: East Texas
Posts: 5,538
There was a time when some builders were putting seals on exhaust guides, not so much now.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
74 GTV restored daily driver
71 Berlina in resto
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
gigem75 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Alfa Romeo Bulletin Board & Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome