Author Topic: How many Exhaust manifold bolts? 2 or 3 ?  (Read 1739 times)

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95yj0645

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How many Exhaust manifold bolts? 2 or 3 ?
« on: December 28, 2010, 06:33:30 AM »
Im fixing an intake gasket and putting on headers and when removing my exhaust manifold off of my 95 2.5L I only had 2 bolts ? but there is a hole for a 3rd one at the back .. what am I missing ?

Offline sharpxmen

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #1 on: December 28, 2010, 09:53:29 AM »
Im fixing an intake gasket and putting on headers and when removing my exhaust manifold off of my 95 2.5L I only had 2 bolts ? but there is a hole for a 3rd one at the back .. what am I missing ?

lots of pple missing that one, usually it's broken
'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
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Offline Jeffy

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #2 on: December 28, 2010, 12:20:35 PM »
Yup, that stud either breaks off or falls out.
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95yj0645

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #3 on: December 29, 2010, 09:41:24 PM »
So is it ok to run just 2? I had no exhaust leaks

Offline Jeffy

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #4 on: December 29, 2010, 09:49:55 PM »
So is it ok to run just 2? I had no exhaust leaks
If you're removing it I doubt it will seal up with only 2 bolts.  Might as well fix it if you're taking the manifolds off.
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"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

95yj0645

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #5 on: December 30, 2010, 10:05:07 AM »
Alright I'll drill it out and retap it.. Or try an easy out

Offline Jeffy

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #6 on: December 30, 2010, 12:22:46 PM »
Alright I'll drill it out and retap it.. Or try an easy out
If your lucky the threads will be gone as well.  If not soak the threads and see id you can turn them with a punch and hammer.  Or else you can use reverse cut drill bits.  Start small and work your way up in sizes so as not to damage the threads.  If that doesn't work I'd use a screw-out rather then an EZ-Out.  Less of a chance of breaking off.
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Offline dwtaylorpdx

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #7 on: January 01, 2011, 08:12:46 PM »
The rear bolt has broken off on mine a couple times. I use a reverse
twist 1/8 drill and it usually spins right out before I finish drilling.

I switched to stainless bolts and use a full length gasket with my
headers and intake manifold, seemed to do the trick.

THis problem seems to be related to uneven torque on the bolts
I find the socket head bolts work a bit better casue I can torque
them in the tight places between the manifold and block better.

Dave
94 YJ - 2.5 Hesco Cam B&B Ported - AX5 Trans w/Centerforce Dual Friction Clutch - 4" Rough Country Lift W/Skyjacker Shocks - D44 Rear/ARB - D30/ARB - ARB Compressor - Warn M8000 in Custom Bumper - Reunell Rear Bumper - Metalcloak 6" Body Armor Kit - Tuffy Console - 265x85-16 Tires - 2M Radio

Offline grumpygy

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Re: How many Exhaust manifold bolts? 2 or 3 ?
« Reply #8 on: April 24, 2011, 02:02:58 PM »
Been wondering how many folks lose that bolt.  Just noticed mine is gone.  You can hear the leak when cold but it goes away after its warmed up. Plan on putting on a header later this summer will fix it then.

  Could part of the problem be that Jeep does not use a gasket  on the exhaust side.
94 YJ, Cool Air intake, 19lb Inj, 4.0 Throttlebody with spacer,  31/10.50/15's