SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 12-02-2019, 08:55 PM   #1
Macgyver
Advanced Member
Macgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to all
 
Join Date: Apr 2009
Location: Detroit Metro Area
Posts: 778

1995 SC2
2001 SL1
Default Head Gasket External Oil Leak

97 Saturn SOHC. Bit of an interesting issue I ran into. This car was brought to me with a cracked cylinder head (oil/coolant mixing). I put a reman head on (https://thecylinderheadshop.com) and after driving the car I noticed oil leaking out of passage that feeds the head near cylinder #1.

I figured I rushed through the job the first time (Iíve done 6 or 7 head gaskets on Saturnís before) and replaced the head gasket (Fel-Pro) and head bolts a 2nd time. Itís still leaking and only leaks while the engine is under load. You can idle it for 30 minutes and the leak will never appear. Iíve added leak dye so you can easily see oil pooling right on top near the alternator.

Anyone have any suggestions? Iíve posted below the exact steps Iíve done each time Ė not sure why this engine is giving me trouble. Should I replace the head gasket again and add a layer of copper coat to it for additional sealing? Iím certain I torqued the bolts exactly as specified the 2nd time around.

-----------------------------------------------------------------------

Initial dry bolt torque in sequence to 48ft-lb following the torquing pattern in stages to 20ft-lb, 30ft-lb, and final 48ft-lb. This establishes the proper clamp load on the gasket. This is followed by removal in about 1/4 turn in sequence until loose. Bolts washers and bolt heads are oiled with clean engine oil and reinstalled finger tight.

Torqued in sequence to 22 ft-lb then 33ft-lb and then additional 90 degree turn.

Torquing sequence
intake side
8-4-1-5-9
7-3-2-6-10
exhaust side
Attached Images
File Type: jpg IMG_8720 (1280x960).jpg (117.2 KB, 10 views)

REWARD EXCELLENCE!

Add to Macgyver's Reputation
Rate the quality of this post and help Macgyver reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Macgyver is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 12-02-2019, 09:08 PM   #2
OldNuc
Super Member
OldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond reputeOldNuc has a reputation beyond repute
 
Join Date: Apr 2008
Location: Far Southwestern Iowa
Posts: 66,693
 

1998 SC2
Default Re: Head Gasket External Oil Leak

I have fixed that by slightly tightening that head bolt. You want it not quiet as tight as a dohc.

REWARD EXCELLENCE!

Add to OldNuc's Reputation
Rate the quality of this post and help OldNuc reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
OldNuc is offline   Reply With Quote
Old 12-02-2019, 09:58 PM   #3
billr
Master Member
billr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to allbillr is a name known to all
 
Join Date: Jul 2013
Posts: 5,119
Default Re: Head Gasket External Oil Leak

How was the block deck checked for flatness?

REWARD EXCELLENCE!

Add to billr's Reputation
Rate the quality of this post and help billr reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
billr is offline   Reply With Quote
Old 12-02-2019, 10:57 PM   #4
Macgyver
Advanced Member
Macgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to all
 
Join Date: Apr 2009
Location: Detroit Metro Area
Posts: 778

1995 SC2
2001 SL1
Default Re: Head Gasket External Oil Leak

Quote:
Originally Posted by OldNuc View Post
I have fixed that by slightly tightening that head bolt. You want it not quiet as tight as a dohc.
So an additional 5 ft/lbs on just that bolt even though I've torqued them 90 degrees?

And I did not check the block for flatness. There wasn't a prior oil leak at the head and my straight edge is 4 feet long - not enough to fit inside the engine bay. I'm not saying it's not possible, but I've never known the S series blocks to warp, it's always the head if anything.

REWARD EXCELLENCE!

Add to Macgyver's Reputation
Rate the quality of this post and help Macgyver reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Macgyver is offline   Reply With Quote
Old 12-27-2019, 07:04 PM   #5
Macgyver
Advanced Member
Macgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to allMacgyver is a name known to all
 
Join Date: Apr 2009
Location: Detroit Metro Area
Posts: 778

1995 SC2
2001 SL1
Default Re: Head Gasket External Oil Leak

Just an update on this if anyone has a similar problem. Tightening just the one head bolt did not fix the problem so I re-did the work again. The leak has now stopped completely and the car has been driven 500 miles (the leak was immediate prior). Outside of the normal scotch brite pad / acetone combo for cleanup when replacing the head gasket:

1) I ensured the block and head where straight using this (https://www.amazon.com/gp/product/B01DQCBHJ6/) and probing with a 0.0015 inch feeler gauge to ensure both mating surfaces were straight. Both were straight.

2) I coated a new Fel-Pro head gasket with 4-5 light layers of Copper Coat (https://www.amazon.com/gp/product/B000M8NZ8E/). Fel-Pro says not to do this, but whatever. I couldn't take the chance of this not sealing again.

3) I used DOHC torque specs instead of SOHC (an additional 5 foot pounds is used prior to the 90 degree turn).


Out of the multiple head gasket jobs I've done on the S series, this was a one off. It was very odd and I still have no idea why there was all this trouble.

REWARD EXCELLENCE!

Add to Macgyver's Reputation
Rate the quality of this post and help Macgyver reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Macgyver is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
96 SL2 - Coolant leak, blowing radiators, possible head/head gasket? guitar_stitch S-Series General 6 01-29-2015 12:36 AM
1.9 SOHC Cylinder Head/Head Gasket..... Coolant Leak BRIAN41920 S-Series Tech 12 01-21-2014 03:40 PM
oil leak in head gasket fallon S-Series Tech 11 05-25-2013 12:07 PM
coolant leak...head gasket, cracked head, or water pump? BRIAN41920 S-Series Tech 13 01-11-2013 04:18 PM
Is it possible to repair a oil leak from the head gasket without replacing gasket? tgferg67global S-Series Tech 13 12-23-2010 08:39 PM


All times are GMT -4. The time now is 03:49 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.