Good Engine rebuild kit?

Goddard-MarkVIII

Goddard-MarkVIII

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I'm going to do a engine rebuild and I wanted to know a good kit to get? I'm not rich, but I'd like to still get some upgrades from the kit.
 
Unless you want to do C heads, or want to do a P&P and Forged Internals then go ahead and rebuild it.

If you are just wanting to do a stock rebuild then DO NOT REBUILD, buy a low mileage junk yard motor and drop it in... you will NEVER be able to build a motor as good as Ford does.
 
If you are doing a stone stock rebuild.... the cost of getting to OEM tolerances and the cost of using OEM parts would be outrageous. Yes it is possible... but realistic or practical, I don't think so....

When you can get a decent lower miles 4v for $500... no way you can get one rebuilt to full OEM tolerances for 3 times that...
 
MediumD said:
What exactly do you mean by that? It's perfectly possible to rebuild a modular to better than OEM specs...
Click to expand...

not too many people are good enough mechanics to "take a mod motor apart".

It's not for beginners, it's not a good project for someones first or 10th rebuild.

There are alot of places to "go wrong"... especially cam timing.

I'd just get a low mile replacement and drop it in rather than wasting a bunch of money on a "stock or semi stock" rebuild.

you can get a decent mile take out from karkraft.com be it a mach 1 motor, aviator motor or a cobra motor.. for far less money and come out with much more power, and a dependable motor for ALOT less than a stock rebuild.

modmotors are not for budding engine builders...
 
XLRVIII said:
I'd just get a low mile replacement and drop it in rather than wasting a bunch of money on a "stock or semi stock" rebuild
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Oh I'm not disagreeing with that idea at all.

Just saying that one could "NEVER" do a better job than Ford is a bit misleading..
 
MediumD said:
Oh I'm not disagreeing with that idea at all.

Just saying that one could "NEVER" do a better job than Ford is a bit misleading..
Click to expand...

OK let me rephrase what brandon was trying to point out.

NO ONE one this board, can do a better job than ford did originally.
IF you dont agree with that, you are being terribly dishonest with yourself.

Granted you could be a "check writer" and get someone to build one for you.
But the "cost" of such a thing would far out weigh any performance you may acheive.
For less than HALF of a motor rebuild you can drop an upgraded motor into the car..and be done with it.. and have a SOLID engine with correct cam timing.
 
If you "look" you'll find one.
I found a 60K 93 that was wrecked and paid 600 for the whole car.
 
$2800
FAUX%20COBRA1.JPG


Aviator motor with cobra intake.. NEW.

a NEW 96 mark 8 motor is 2600.00



By the time you get parts, machine work and assembly labor accounted for.. your gonna be approaching this much anyways.

there ARE options.
 
If I already have a engine and I get a new engine what parts would I need? What assembly and labor would I have to pay for?
 
Well dont take my word for it RUN DOWN and buy yourself a "rebuild kit"..and GET AFTER IT SON.
 
XLRVIII said:
OK let me rephrase what brandon was trying to point out.

NO ONE one this board, can do a better job than ford did originally.
IF you dont agree with that, you are being terribly dishonest with yourself.

Granted you could be a "check writer" and get someone to build one for you.
But the "cost" of such a thing would far out weigh any performance you may acheive.
For less than HALF of a motor rebuild you can drop an upgraded motor into the car..and be done with it.. and have a SOLID engine with correct cam timing.
Click to expand...

Yeah... pretty much all of us are "check writers" because I doubt anyone on here has a machine shop in their back yard. Other than the eleven foot long timing chain, this isn't spectacularly different from your run of the mill V8...

Again you fail to realize that I agreed with KK's point, so if you'll kindly shut the :q:q:q:q up and move along, it would be appreciated.
 
MediumD said:
Other than the eleven foot long timing chain, this isn't spectacularly different from your run of the mill V8...
.
Click to expand...

IF that is what you think then maybe you should stop filling this thread with BAD INFORMATION... and kindly SHUT THE FUK up.. and move along.

there is alot more difference than merely the large timing chain(S)

and if you think I'm gonna sit here and spoon feed you the differences.... HAHAH NOT.
 
Fact of the matter is....the only thing the mark motor has in common with older V-8's is...

EIGHT CYLINDERS...
other than that.. two definatley different animals from every aspect of the word.

piston design is different
rods, design, materials and production techniques far different from previous
the way the crank is secured in the block TOTALLY differnet from ANY previous engine {show me a 6 bolt main production engine??)

combustion chamber design is also different than most any other engine.
it's close to a Hemi head, but they call it a "pent roof design" so they dont "step on chryslers toes"

not to mention the whole valvetrain is operated in a completely different manner than any previous V-8 {show me a pushrod in this engine}

bore and stroke numbers make this motor on of the few engines that are "square bore" motors..

The whole damned thing is different from "stem to stern".

YET this budding engine builder wants to say "its no different".

HELL... the tolerances on a 4.6 are FAR FAR tighter than ANY previous production motor.

not to mention they were assembled by robots which can accurately place a cylinder head on a motor with "it's eyes closed".

no way shape form or fashion is the DOHC 4.6 anything CLOSE to any previously produced engine "in it's time".

Hell the rest of the world is "just now" catching up with the technology that ford released in the early 90's.

Name a V-8 production mass produced engine that makes 1HP per cubic inch????
1HP per cubic inch used to mean you had forced induction of some kind.. now N/A motors are making 1+HP per cubic inch.

Compare the 90's model 4.6 290HP from 281 cid to the 90's model 454 put in the SS trucks.
454 CID making 225HP vs 281 CID making 280HP.

Volumetric efficiency!!! FTW!!!
 
XLRVIII said:
Name a V-8 production mass produced engine that makes 1HP per cubic inch????
Click to expand...

I know of some early 90's production DOHC V8's that produced more than 1 HP per cubic inch. BMW's M60 B40 (and B30) for one... GM's LT-5 for another, GM's Northstar etc.

Was just reading up on the Porsche 928 S4. Had a 5.0 DOHC V8 that produced 316 HP... In 1987!!! Now, that's pretty advanced, IMO.
 
I wouldn't attempt a rebuild on any 'advanced' close tolerance DOHC (because I don't have the skills / knowledge / tools / uber clean work environment)

However, If I wanted a custom 'high performance' rebuild, then I would entrust such work to a specialist. (at great cost, no doubt)
 
93' Blue on blue said:
I know of some early 90's production DOHC V8's that produced more than 1 HP per cubic inch. BMW's M60 B40 (and B30) for one... GM's LT-5 for another, GM's Northstar etc.

Was just reading up on the Porsche 928 S4. Had a 5.0 DOHC V8 that produced 316 HP... In 1987!!! Now, that's pretty advanced, IMO.
Click to expand...

In 1965 I had a 327 Corvette with solid lifters rated at 365 HP. All stock from the Factory.
 
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