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Mar 18, 2004 | 07:56 PM

therigwelder

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Tuned

Joined: Mar 2001

Posts: 491

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From: MS.

bad news

i pulled the heads off my 96 5.8 and found my problem.the reason i didnt have compression on #1 was a bent valve and pushrod and a broken spring.could this be the knock i was hearing on acceleration?the pistons look good,the cylinders look good and there dosent appear to be any damage to #1 piston.according to the ridge at the top of the cylinder there is a few thousandths wear.do yall think i need to go all the way to the bottom end?cause i really dont want to.i didnt pull the dist.and dont want to mess with timing if i dont have.
on another topic will a 351 efi intake fit a 302 and will a 302 bolt up to the e40d

Mar 18, 2004 | 09:00 PM

MustangGT221

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Joined: Nov 2001

Posts: 14,947

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From: Topsfield, MA

351 intake is wider so it won't fit, and the 302 will bolt up to an E4OD, the I-6, and the two V-8s have the same bolt pattern.

Mar 19, 2004 | 08:46 AM

daerhldgs2

Elder User

Joined: Apr 2003

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If you replace the head or repair that should solve your problem

Mar 19, 2004 | 12:48 PM

Cheryl85

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Joined: Mar 2004

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From: Brookings,OR

If you had low oil pressure you might consider going through the whole thiing, other than that sounds like you might have a good bottom end.

Mar 19, 2004 | 10:06 PM

therigwelder

Thread Starter

Tuned

Joined: Mar 2001

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From: MS.

the last time i ran the engine it had good oil pressure according to the guage,i inspected the #1 cylinder closely this evening and found no damage. i spun the engine over and all cylinders seemed to have full strokes(no bent rods)the good news is both heads are being rebuilt for 160 plus parts.i thought that was a pretty good deal

Mar 21, 2004 | 12:38 AM

rebuilder1

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Joined: Jun 2003

Posts: 20

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From: Warshington

Be sure to replace all your valve springs during the head overhaul. It sounds like your valve spring failed and caused the valve to kiss the piston.

Mar 21, 2004 | 04:20 PM

therigwelder

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Tuned

Joined: Mar 2001

Posts: 491

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From: MS.

yeah i think so too,there is nodamage to the lifter,or cam gouge so the spring collapsed the valve bent and caused the rod to jump out the lifter and bend