It is currently Sat Feb 24, 2018 2:05 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Tue Jan 16, 2018 10:05 am 
Offline
SE Member
SE Member

Joined: Sat Nov 14, 2015 4:47 pm
Posts: 11
Year and Trim: 1994 Bonneville SE
1994 Bonneville, 3800.

Severe overheating issues. After replacing radiator,thermostat, UIM and LIM gaskets with no help in overheating, decided to pull the head cylinders to check gaskets. Lo and behold, 90% of the water ports in the head gaskets were completely clogged.

So now I'm wondering if I should give the cylinder heads a good scrubbing and pop them back on, or have the cylinder heads rebuilt (i.e. valve job- something I don't want to do myself), or simply purchase rebuilt heads for around $250 each.

She's got 200K miles on her. And I plan on using her as my DD for at least another 50K miles. Any recommendations?


Top
 Profile  
 
PostPosted: Tue Jan 16, 2018 10:30 am 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4283
Location: Dearborn, MI
Year and Trim: '93 SSEi
'05 STS-4
'97 Camaro
'97 LeSabre
Overheating an engine can lead to cracked heads. The point where they tend to crack is the narrow spot between the valves. Use a fine wire wheel to clean the metal there until it's shiney and you can see if they are cracked. Might need a magnifying glass and flashlight to see any cracks.

If they are not cracked, you should be OK with a good cleaning and reinstall.

_________________
I don't know how much boost it takes to blow the tires off. But I know how much I'm going to use!
Image

Runs:
'93 Pontiac Bonneville SSEi - Twincharged, manual, racecar! Build thread
'97 Chevy Camaro - 3800, T5, T-tops, my DD
'05 Cadillac STS - V8, AWD, her DD
'89 Buick LeSabre Limited - winter DD
'84 GMC Sierra Classic - Twin turbo 3800
'97 Buick LeSabre - L67 project
'92 Pontiac Bonneville SSE future project

Doesn't run:
'87 Buick LeSabre T-type - future victim
'67 Buick LeSabre - future victim


Top
 Profile  
 
PostPosted: Tue Jan 16, 2018 11:28 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Wed May 21, 2008 11:47 pm
Posts: 5880
Location: Philly
Year and Trim: 95 SLE
You can heat any suspect areas with a torch to see if oil bubbles out of the potential crack.

_________________
Image
95 SLE... a keeper. 241k miles. Low and Slow.
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy
07 Infiniti G35s 6MT
07 Ducati Monster S2R 800 with DS1000 swap
05 Suzuki DRZ400S
74 Yamaha DT175: brap brap, brap
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours [ DST ]


Related topics
 Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Heads Up & Car Monitor

ernie44golf

5

1512

Sun Jan 15, 2012 5:21 pm

willwren View the latest post

This topic is locked, you cannot edit posts or make further replies. Heads Up & DIC & Gauges on right

ernie44golf

1

672

Wed Jan 18, 2012 1:23 pm

willwren View the latest post

There are no new unread posts for this topic. cylinder six misfire

Troxartes

8

2943

Thu Aug 21, 2008 10:20 am

willwren View the latest post

There are no new unread posts for this topic. Missing a Cylinder.

SammyZ

4

821

Tue Dec 09, 2008 2:44 pm

bobfather99 View the latest post

There are no new unread posts for this topic. Cylinder 6 Misfire

ijreed

9

3361

Wed Jan 19, 2011 5:50 am

ijreed View the latest post

 


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group


phpBB SEO