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-   -   306,000 miles... (http://www.jeepgarage.org/f51/306-000-miles-72490.html)

Texas Jeep 03-06-2014 12:39 PM

306,000 miles...
 
... on my Jeep Grand Cherokee 4.0L engine. It still runs decent but im starting to get a rough idle at stop lights while in drive. I also hear some knocking and got a couple of oil leaks.
At first I made the decision to try to make it to 500,000 without a rebuild or engine replacement, but i think i might just do it at 350,000.

I dont know if i should buy a remanufactured engine or just hire a mechanic to do a complete rebuild. I'm kinda on a budget so im leaning towards a rebuild. Also, does anyone know a reputable mechanic in the Dallas/Ft Worth area that can do it and maybe customize the engine a bit? Higher compression ratios, etc.
Any advice would be helpful. Thanks.

hoffmanestates 03-06-2014 08:07 PM

Congrats on the maintenance and up keep, you are a definition of a man. I have 206k on my wrx and hopes to keep it ticking. at this point in life I would just source a long block and be done.

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Texas Jeep 03-08-2014 08:56 PM

Thanks Hoffman.
Question about the blocks... What's the difference between a long block and a short block?

Strongjeff 03-08-2014 09:28 PM

Re: 306,000 miles...
 
Quote:

Originally Posted by Texas Jeep (Post 988397)
Thanks Hoffman.
Question about the blocks... What's the difference between a long block and a short block?

long blocks have the internals in them, you just transfer everything else on the engine to the new block. a short block is just that, its just the block no head or internals

hoffmanestates 03-09-2014 09:18 AM

doesn't typically a short block have pistons,crank,and rods? long block is fully built. heads and all

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Strongjeff 03-09-2014 10:10 AM

Quote:

Originally Posted by hoffmanestates (Post 988559)
doesn't typically a short block have pistons,crank,and rods? long block is fully built. heads and all

Sent from my LG-P999 using Tapatalk 2

Nope a short block is just the block

hoffmanestates 03-09-2014 02:58 PM

them how come a short block from subaru is everything lower. and so on from each manufacturer?

http://img.tapatalk.com/d/14/03/10/arujy8yg.jpg

Strongjeff 03-09-2014 06:45 PM

Quote:

Originally Posted by hoffmanestates (Post 988733)
them how come a short block from subaru is everything lower. and so on from each manufacturer?

Maybe it just from those people

bill_de 03-09-2014 06:50 PM

Re: 306,000 miles...
 
I always thought a short block was everything below the head.

HEMI short blocks - shopHEMI.com

Blueprint Engines Short Block Cast Assemblies - Free Shipping on All Orders @ JEGS

Maybe there is a difference between 'short block' and 'short block assembly'. :confused:

---

greenwayer 03-09-2014 07:00 PM

Quote:

Originally Posted by bill_de (Post 988816)
I always thought a short block was everything below the head. HEMI short blocks - shopHEMI.com Blueprint Engines Short Block Cast Assemblies - Free Shipping on All Orders @ JEGS Maybe there is a difference between 'short block' and 'short block assembly'. :confused: ---

Short block includes internal (pistons, bearings, crank, and rods). Jeff you are thinking of a bare block.

Strongjeff 03-09-2014 07:06 PM

Re: 306,000 miles...
 
Quote:

Originally Posted by bill_de (Post 988816)
I always thought a short block was everything below the head.

HEMI short blocks - shopHEMI.com

Blueprint Engines Short Block Cast Assemblies - Free Shipping on All Orders @ JEGS

Maybe there is a difference between 'short block' and 'short block assembly'. :confused:

---

there is a difference, look at the link. "SHORT BLOCK ASSEMBLIES" they have the rotating assembly in them. a True short block is just a bare block

DeucesALLin 03-10-2014 12:23 PM

Short blocks...
 
Are everything UNDER the heads, and will include cam on OHV setups. However OHC setups the cams come with the heads usually.

And when we are talking about blocks, for those who might want the experience of building at least some of it themselves:

A BARE BLOCK is just that, a bare block. If it is a NEW block, is may or may not be MACHINED. If it is a used block, it is called SEASONED. Either way, a block is EMPTY. No pistons or crank.

Freeze plugs are extra.

Machining is extra.

Deckplating and fixture honing is extra.

A "Short Block" is everything that CANNOT BE UNBOLTED.

A "Long Block" is the BLOCk, HEADS and CAM.CAMS

A CUTOUT is a running engine. complete, torched out of a wreck.

A PULLOUT is a runing engine unbolted from a wreck.


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