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  #1  
Old 06-20-2011, 11:49 AM
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Join Date: Apr 2011
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Default Head Bolt torque 98 2.5

Can any one tell me the proper head bolt torque on a 98 2.5 engine. I have tried to research this in other areas and get 51 ft lbs to 90-100 degrees????. I have ruined 2 head gaskets so far.
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I have a 1998 Ford Ranger XLT. 2.5 Litre 4 speed w/ od. I have never owned a ford truck and purchased this one at a Farm auction for 1500.00.
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  #2  
Old 06-20-2011, 03:36 PM
DirtFreeks Mtrspts #7299
 
Join Date: May 2011
Posts: 180
Default Re: Head Bolt torque 98 2.5



1. Clean all gasket mating surfaces.
2. Install new gaskets as required.

o Use new cylinder head bolts.

3. Follow the removal procedure in reverse order.
4. Tighten the bolts in sequence, in three stages, to 70 Nm (51 ft. lbs.) .

o Stage 1: Tighten all bolts to 70 Nm.
o Stage 2: Retighten all bolts to 70 Nm.
o Stage 3: Tighten all bolts an additional 90-100 degrees

From Alldata.com
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  #3  
Old 06-20-2011, 11:12 PM
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Default Re: Head Bolt torque 98 2.5

OK I get the first part of torque to 51 ft lbs. But unsure how to do the 90- 100 degree thing??????
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I have a 1998 Ford Ranger XLT. 2.5 Litre 4 speed w/ od. I have never owned a ford truck and purchased this one at a Farm auction for 1500.00.
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  #4  
Old 06-25-2011, 07:40 PM
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Join Date: Jun 2011
Posts: 12
Default Re: Head Bolt torque 98 2.5

i'm thinking they are whats called torque to yeild bolts.torque to the 51 ft and then twist them another 90 degrees.also you will need new head bolts .
hope this helps
john

Last edited by quesey; 06-25-2011 at 07:42 PM.
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  #5  
Old 07-07-2011, 07:37 PM
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Default Re: Head Bolt torque 98 2.5

Put finishing touches on my Ranger today. Engine runs fine. Has good power and installed new cat. Drove for 50 miles like it says too so that computer can reset. Wound up with 2 codes tah are not in book. P1132 & P1506. OBDII says they are DTC specific and to see service Manual. Any one Know what they are. Ford Dealer wants me to bring in for a fee to check but is 78 miles away.
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I have a 1998 Ford Ranger XLT. 2.5 Litre 4 speed w/ od. I have never owned a ford truck and purchased this one at a Farm auction for 1500.00.
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  #6  
Old 09-10-2011, 12:30 PM
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Posts: 20
Default Re: Head Bolt torque 98 2.5

p1506 is a Idle air control overspeed error (see p0507). I have the 1506 code myself and am trying to figure out what to do about it, so I cant help you much more right now.....
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