Rebuild or Replace 1999 4.6L SOHC - Ford Mustang Forum

 
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post #1 of 7 (permalink) Old 07-30-2012 Thread Starter
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Angry Rebuild or Replace 1999 4.6L SOHC

My 1999 GT Convertible had a tapping sound under the valve covers. I had a local shop on their recommendation replace all the hydraulic valve lash adjusters. I picked the car up today and now the tapping noise is coming from lower and deeper inside the block and gets much worse when driving. I took it to a different engine shop and they feel the crank, rod and/or bearing are about to go. They are recommending a rebuild with new crank, new bearings,valve grind gasket kit,lower overhaul gasket kit, springs, 1 piston, 1 connecting rod, new rings, honing, upper and lower bearings, timing chains, water pump, oil pump basically as I understand it and I'm a neophite is this considered a lower rebuild?
They are giving me a price of 4500. Should I consider a crate engine? The car has 90,000 miles and otherwise is in very good condition. Any advice on which direction to go?

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post #2 of 7 (permalink) Old 07-31-2012
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Personally if it were me, I would go with either a crate engine OR an engine fully rebuilt and guaranteed by a reputable engine builder.

The problem with semi rebuilding your own block is that you are at the mercy of the shop and if they don't specialize in this kind of work you might be in trouble down the road. Literally.

Many engine rebuild problems don't manifest themselves till many, like 20k + miles down the road.
IOW it's rare that you will ever be able to prove it was a bad rebuild.

Just my 2 cents.

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post #3 of 7 (permalink) Old 07-31-2012
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I pulled a 2002 4.6 from a junkyard cab, had a shop do all the rebuild (3500$) and then pulled my 97 4.6 out and installed the rebuilt one. I'm out total about $5500, and I did Comp Cams, BBK headers, BBK x pipe and a cold air kit + a tune at a shop w a dyno. If your really new I'd go w a crate motor, but just my 2cents...

-know that I stand ready when the wolf growls at the door-
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post #4 of 7 (permalink) Old 11-04-2012
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If you were going to spend all that money wouldn't it of been better to get a crate motor? There's a 306 for $3700. Just seems much better to have it brand new


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post #5 of 7 (permalink) Old 11-04-2012
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Quote:
Originally Posted by snookz101 View Post
My 1999 GT Convertible had a tapping sound under the valve covers. I had a local shop on their recommendation replace all the hydraulic valve lash adjusters. I picked the car up today and now the tapping noise is coming from lower and deeper inside the block and gets much worse when driving. I took it to a different engine shop and they feel the crank, rod and/or bearing are about to go. They are recommending a rebuild with new crank, new bearings,valve grind gasket kit,lower overhaul gasket kit, springs, 1 piston, 1 connecting rod, new rings, honing, upper and lower bearings, timing chains, water pump, oil pump basically as I understand it and I'm a neophite is this considered a lower rebuild?
They are giving me a price of 4500. Should I consider a crate engine? The car has 90,000 miles and otherwise is in very good condition. Any advice on which direction to go?
Replace, with a 2001 Cobra motor. I mean you can get a 2011 5.0 motor brand new for what 5k? That is insane! Not saying you should but if your engine blows, just buy a new one, chances are it will fail again.

I'd rather spend 3k for a better, new, RELIABLE motor than 1k to rebuild the whole thing.

2001 Mustang V6 4-speed Automatic: Sold
2003 Mustang GT 5-Speed Manual: Current
Appearance Modifications: None Yet
Performance Modifications: None Yet
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post #6 of 7 (permalink) Old 11-04-2012
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My 93 5.0 motor has 73k miles on it. I'm thinking on getting this motor. Do you guys think I'm better or getting crate motor then pulling 302 and upgrading it? Won't that be close to the same amount of money ?


http://www.cjponyparts.com/ford-raci...p/p/M6007X302/


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post #7 of 7 (permalink) Old 11-05-2012
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look in the recycle yards and find a gran marque with low miles from a non service car (luxury car) that will have a good romeo pi motor . you can go with up to 06 or so and do a long block swap . motor should cost 6-800 then instal . the only thing you will need is a 6 bolt flywheel

98 lx converted to 98 gt wires with rebuilt 32 valve teskid cobra motor with vortech v-2 with cool charge, ford imrc deletes, ford racing shorty headers,2.5" catless h pipe with flowmaster 60 series muflers and full cat back, coil on plug, steda timming adjuster,diablo tunner, smog deleted,rebuilt 4r70w trany built with reprograming kit,optional manual valve body & trans break ,updated ford parts, 3000 stall converter,3:73 gears or 4:10,8.8 or 9" optional rear, 6 point cage, cobra breaks,&more
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4.6l gt , 4.6l sohc engine swap , rebuild , replace

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