engine swap or new head? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-03-2009, 11:11 AM   #1
Newb
 
Join Date: Mar 2009
Posts: 14
engine swap or new head?

So saturday I bought a new (99) Wrangler, Its my forth. Sport, 4.0, 5 spd, 90K miles. Sunday it over heated. I changed the thermo, thermo gasket, water pump, fan clutch, and rad.. After all that on Monday it bellowed white smoke. Took it to a garage and they told me what I already knew, blown head gasket. The engine is only running 20psi of oil pressure at idle, 45 at 2400 rpm. The tech told me that this has been a problem for a while, its been overheating, it didnt just happen. Im sure there is more damage to the motor. So what would you do? Replace the head (im sure its warped) and gasket for $1230.00, replace the engine with a Jasper motor (with a 3yr warrenty) for $3400.00. Get a junkyard motor ($850.00) with 61K miles installed for $650.00 for a total of $1500.00? Its pretty aparent that the last few owners didnt take care of this engine and dumped the problems on me. This is just an extra vehicle, I wont put many miles on it. So again I ask, what would you do knowing all of this?

vfr800rider is offline   Quote Quick Reply
Old 03-03-2009, 02:33 PM   #2
Jeeper
 
bpowa's Avatar
 
Join Date: Jul 2007
Posts: 836
get a junk yard motor.. 1000% why waste money

but my question is why go through 4 different jeeps instead of keeping one.. I dont understand why people get rid of the jeep and then buy another later?

Ignore the ? if it was due to financial reason.. I mean no offense by asking this.

bpowa is offline   Quote Quick Reply
Old 03-03-2009, 05:56 PM   #3
Newb
 
Join Date: Mar 2009
Posts: 14
I had a $500.00 '79 cj5 in 1991, I was struggling college student, couldnt afford to keep it. I had a '97 sport in '98, ended up being a divorce sale. I had another '97 se in 2003 but its just to hard to go from a 4.0 to a 2.5. Thats why I got this one, to me its the perfect set up; 4.0, 5 speed, hard doors, soft top, A/C, CC, and tow package. Jeeps are great but its also hard to live with them everyday, all day, in all situations. I keep trying though.
vfr800rider is offline   Quote Quick Reply
Old 03-03-2009, 06:00 PM   #4
Jeeper
 
jtalar's Avatar
 
Join Date: Oct 2008
Location: VEGAS
Posts: 415
Images: 4
Drop a 350 in that beeeyyoootch and be done with it...
__________________
jtalar is offline   Quote Quick Reply
Old 03-03-2009, 06:03 PM   #5
Jeeper
 
bpowa's Avatar
 
Join Date: Jul 2007
Posts: 836
tel me about it.. Its a love hate relation.. just like everything in my life.. sigh..lol

a part of me love the jeep. another part is I wish it was a second car. I just want a regular 4 door luxury sedan.. like a camry, accord etc for daily driving and a jeep for rec use.. but im not $$.. so am happy with moto, jeep, mtn bike. but who am I to complain.. there are others who have les and I am greatful for what I am struggling to keep..ahahah


but yeah man.. Id get a junk yard motor... DIY f you have tools. do it in the spring and ride the veefer..

just get a manual.. its not that hard.. it bolts directly in.. the hardest part is to pick up a wrench and jump in.
bpowa is offline   Quote Quick Reply
Old 03-03-2009, 06:08 PM   #6
Newb
 
Join Date: Mar 2009
Posts: 14
I dont have the VFR anymore either, it was a '99 and I kept it till '07. Now I ride a Yamaha FZ1 and I have never looked back. What do you ride?
vfr800rider is offline   Quote Quick Reply
Old 03-03-2009, 06:43 PM   #7
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
You really don't know for sure the head you have is shot. I'd take it apart before deciding anything. It may just need a new head gasket - less than $100 and a 1/2 day's work.

Why do people always assume the worst?

If you need a new head, there's a place in Texas that sells new complete heads cheap. Search the internet for them.
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote Quick Reply
Old 03-04-2009, 08:48 AM   #8
Jeeper
 
GrnTJ's Avatar
 
Join Date: Jul 2007
Location: Pinckney, Michigan
Posts: 1,497
Send a message via AIM to GrnTJ
I have built a few motors in my day and I can honestly say I have never seen a warped head. Dont go waste all this money when a new top end gasket kit is only like $60:
RockAuto Parts Catalog
One of the easiest vehicles in the world to change a head gasket on is a 4.0L I6. Id pull your head and use a straight guage to see if it really is warped or not. If not then just get yourself the gaskets and put it back together. If it is then just buy your own from ebay or something:
http://cgi.ebay.com/ebaymotors/2000-...QQcmdZViewItem
Has all the springs and valves and such so that would be ready to bolt right up. You could even go to a junk yard and find a Jeep thats been in a wreck or somethin and pull a head from a place like that for probably no more than $80. The only real special tools youd need are going to be a torque wrench to torque the head bolts to spec and a valve spring compressor to swap all your valve springs, retainers, valves, etc to the new head. Unless you pull a junk yard head and then you could probably just keep all that stuff and slap the ned head on all ready to go.
__________________
99' TJ-SOLD

Without a Jeep for now...
GrnTJ is offline   Quote Quick Reply
Old 03-04-2009, 10:41 AM   #9
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 9,796
Images: 5
Quote:
Originally Posted by bpowa View Post
but my question is why go through 4 different jeeps instead of keeping one.. I dont understand why people get rid of the jeep and then buy another later?

Ignore the ? if it was due to financial reason.. I mean no offense by asking this.


1st 79 CJ Built with my dad. I needed a better work car so
2nd Jeep 96 XJ drove that for a few years..but missed the CJ
3rd 85 CJ.. had two jeeps
4th.00 TJ Really liked the New TJs so traded the XJ in
5th 01 TJ (4th Jeep got wasted by a Semi truck)
6th 97 ZJ told myself I could tow the TJ with it.
7th 00 TJ after I sold the 01 when job change happened..
8th 97 TJ Wife wanted her own and in an auto matic
9th 93 ZJ need something to go on jeep trips with as we sold he others off
10th.. not sure yet have to see what is out there...
__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 03-04-2009, 12:56 PM   #10
Jeeper
 
bpowa's Avatar
 
Join Date: Jul 2007
Posts: 836
Quote:
Originally Posted by vfr800rider View Post
I dont have the VFR anymore either, it was a '99 and I kept it till '07. Now I ride a Yamaha FZ1 and I have never looked back. What do you ride?
My avatar is an r1 and now a 636.. I would not mind a sport touring also, and a motard et. I love them all..
bpowa is offline   Quote Quick Reply
Old 03-04-2009, 08:12 PM   #11
Newb
 
Join Date: Mar 2009
Posts: 14
Nice bikes! I was told at the junk yard that a '99 has to be replaced with another '99 only. They changed something that year and then went back to the way it was. Basically all other years are interchangeagle except for that year. Does anyone know anything about this? Is it true? Tell me your thoughts and thanks for all your help and advice.
vfr800rider is offline   Quote Quick Reply
Old 03-04-2009, 08:16 PM   #12
Jeeper
 
jdhallissey's Avatar
 
Join Date: Aug 2008
Location: Gurnee,IL
Posts: 5,104
Send a message via AIM to jdhallissey
umm if your head is warped take it to the machine shop have them mill it. IF it is under
.050 you can a normal head gasket. If you go more you can use a normal head gasket and up the compression ratio a little bit and pick up some power. keep your head and fix it.
jdhallissey is offline   Quote Quick Reply
Old 03-04-2009, 10:43 PM   #13
Jeeper
 
Join Date: Sep 2008
Location: Baltimore, MD
Posts: 65
I know the feeling, I am on number two and that is being threatened by my daughter, son already took other one.
Quote:
Originally Posted by vfr800rider View Post
I had a $500.00 '79 cj5 in 1991, I was struggling college student, couldnt afford to keep it. I had a '97 sport in '98, ended up being a divorce sale. I had another '97 se in 2003 but its just to hard to go from a 4.0 to a 2.5. Thats why I got this one, to me its the perfect set up; 4.0, 5 speed, hard doors, soft top, A/C, CC, and tow package. Jeeps are great but its also hard to live with them everyday, all day, in all situations. I keep trying though.
wetzie is offline   Quote Quick Reply
Old 03-05-2009, 06:47 PM   #14
Newb
 
Join Date: Mar 2009
Posts: 14
I forgot to mention that when I replaced the thermostat I noticed the head was damaged a bit. There is a place where the thermo. goes then there is a passage for the heater core hose. The piece of metal that separates them (on the head side) has been broken off. This is another reason that I know the former owner abused the jeep.
vfr800rider is offline   Quote Quick Reply
Old 03-10-2009, 10:14 PM   #15
Newb
 
Join Date: Feb 2009
Posts: 1
A blown head gasket doesn't mean the head is beyond repair. What makes you think there is more damage to bottom end? Noise?

Before dumping that much cash in a new head or entire block, and even before you go get a used motor in a junkyard (you already have one of those in your Jeep) that may be worse off than yours is, try these suggestions.

You know you need a new gasket, that's a given, but remove the head and take it to a local engine shop. They can magnaflux it (inspect for cracks with ultrviolet light) and check the head for any warpage.

If it is cracked, then you decide from there if you want new, rebuilt, or used.

If it is warped, just have it shaved down to remove the warp. No need to worry about manifold clearances, its an I-6.

If you decide to go used, you may have to do this inspection anyway or you may end up with something worse than you have.

Try what you have your hands on already, it may cost a little up front, but may save you alot later on.
TJ Max is offline   Quote Quick Reply
Old 03-14-2009, 04:02 PM   #16
Newb
 
Join Date: Mar 2009
Posts: 14
So I got my Jeep back today with a new engine (64000 miles), new hoses, new clutch, new therm. and gasket, new wires and plugs. Its not overheating, in fact its not getting up to normal operating temperture. What could cause that. What is the normal operating temp? Now the heaters not working because of this. Whats the problem now?? Could the "NEW" thermo be stuck open? What else could it be???
vfr800rider is offline   Quote Quick Reply
Old 03-15-2009, 08:42 AM   #17
Senior Member
 
Join Date: Sep 2008
Posts: 2,775
It's most likely:

1. A bad sensor.
2. The gauge didn't get wired.
3. Possibly a bad/open thermostat (but, eventually, the jeep SHOULD get to temp even without a thermostat.
4. The OEM gauge and the sending unit from the sensor don't match (I think there are different ones and they have to be alike).
stevens243 is offline   Quote Quick Reply
Old 03-15-2009, 01:12 PM   #18
Newb
 
Join Date: Mar 2009
Posts: 14
It was the thermo. I replaced it and it works fine now, thanks for your help.

vfr800rider is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
rebuilding your engine?? Get Stroked!!! jeeper95yj YJ General Discussion Forum 6 01-01-2014 04:47 PM
Engine Swap 90cheroeke 4.0 Auto Into 94 Wragler 4.0 Manual rich solberg TJ General Discussion Forum 8 06-14-2011 07:56 AM
0630 head swap for 0331 Whtshdw TJ General Discussion Forum 2 02-10-2010 10:38 AM
engine swap to 5.3 vortec w/o computer simpsonsdotcom TJ Tech Forum 5 09-25-2009 01:29 AM
YJ Engine Swap Fuel Question ckonash YJ Tech Forum 3 10-15-2007 07:59 PM


» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:07 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC