here whats going on my truck needs a new engine or a least a rebuild theres horrible rod knock bottom end thing that just happened the truck has not gone any where since this started i was going to rebuild the engine myself in auto shop at my college that way it would be done right i have a few questions first i was thinking i would grab a cheapey engine and drop it in while i rebuild this one that way i am not rushed and since this is my only car i need it running again asap
second what parts would you guys upgrade to increase dependablty and stuff like that i am trying to keep it on the low cost side i am looking to spend like $400 to 600 on the rebuild ay suggestions
this is my first complete engine rebuild i have in the past just replaced parts like engine swap and tranny swapped and suppesion repairs so any tips would be awesome
reminber trying to keep it a low cost repair

thanks schooney

 

i wouldnt waste your $ and time pulling a motor at a JY then pulling yours putting the ****ty one in....finding out its got a bigger issue, then putting yours back in. just my $0.2. id just fully rebuild your 2.5? paint the block and clean the engine bay up nice

 

the issue is i cant be with out a car for more then a few days and this is going to me longer then that at the community college or that is what i would do

 

4.0 swap

 

Best thing u can do is decide what u wanna replace ahead of time order your parts ahead of time so your not waiting on parts and recruit someone who is experienced to help guide u along and it should only take a few days depending on how experienced u r w wrenching.

 

Agree 100%

 

the issue is i dont know what bad in the motor til i tear it apart

 

it would be in your best interest to find another 2.5 engine and rebuild that 1

keep your original engine in it now and use it until the backup engine is ready
never scrimp on junk yard parts even engines you just never know what you got yourself into until it is too late.

take your time and rebuild the backup engine properly

 

i have decieded i am going to rebuild the current motor since it still runs and i know whats the history of it and the vins will match up plus i can just deal with bus for a month its not that bad and i also can borrow a friends car when need be since they are in florida and i am car watching for them i already asked so now any suggestions on dos and donts of a engine rebuild

 

anything that moves can be replaced, and probably should. gaskets, bearings etc, you can always return the parts if u decide not to use them.

 

mind giving me a list of what parts move
i am doing this in engine class i dont know much about the insides ofengine in practical application i am book smart but not experenced in the interanls thanks

 

piston rings, bearings (main and rod), gaskets, pushrods, valves, etc. Check for wear and tear in cylinder walls, on the crank etc.

 

also get the crankshaft bearing caps aligned honed ( crucial for long engine life )
also make sure that you use duralube in the engine oil once before the engine is ready to be fired up
it reduces the friction of moving internal engine parts
check your egr feed pipe for blockage as well as your egr valve for major carbon deposits
( replace if beyond hope ) clean the inside of your intake manifold ( have the mounting surface machined flat as well as the exhaust manifold ( replace exhaust mounting studs too )
its the little things a lot of people forget about.
install a new carb ( old 1 is probably worn out anyway )

 

If you don't have the time I would call someone like jasper or an engine rebuilder you like and order a rebuilt engine. To do a proper engine rebuild it takes several days or even a couple weeks by the time you get your block, heads, crank and cam cleaned and checked out.

ordering parts before you tear down could end up costing you money in restocking fees.

This is the reason you don't preorder parts.

Your machine shop should recommend an align bore if your block is out of spec. If you feel it necessary you can check the mating surface on the intake manifold with a straight edge and feeler gauge. That should be done in a X or criss cross pattern.

The Haynes repair manual for you truck has a lot of good information on how to rebuild an engine. they have all the specs and they show you how and where to measure the engine components. I wouldn't be afraid to take on the task of rebuilding my own engine but if you are pressed for time then ordering from a rebuilder is a good option plus should anything go wrong there is a warranty on their engine. If you rebuild it and it blows up on you you can look forward to getting more engine rebuilding experience.

 

i have spent the past 4 hr poking around the engine carpartment and i think its the timing belt tensioner making the racket i have about 1/2 to 5/8 of a inch of deflection on the timing belt which i think is a way to much the drivline belt or what ever its called have only like 1/16 of a inch of delfection so tomorrow i am going to replace the timming belt and tensioner and see if the noise goes a way

 

this is an excellent example of why you need to get things checked out by a professional or someone with experience before you go jumping to conclusions. i am not picking on you, just making a general statement.
i work on transport trucks everyday for work and cars as a side gig on my weekends. i constantly have little old ladies and macho "car" guys self diagnosing and telling me what is wrong and how to fix it and 80% of the time they are wrong.



do your self a favour and have it checked out before you spend too much on it

 

what engine do you have? did i miss it's location?

if it's a 4 banger, look into turbos. might as well make the tear down worth it.....

 

4 banger and i had it looked at by the ford dealer 4 mechanics and about 6 guys that have way more experience with engines then i do. this is the first time i personally spent more a few mins trying to locate the location of the sound coming from the engine all the other people that looked at said its the bottom end but i think the sound is coming from the front end i figure what do i have to lose i can reuse the belt and tensioner on my new engine if this is not the reason

 

I would just spend my $ in rebuild engine instead of used engine because you will also need to rebuild the used engine. Right?

 

Wirelessly posted (Blackberry 8530)

So did the tensioner take care of it, or are you still chasing it?

 

heres what happened i was driving it to a friends mechanic and the engine blew to pieces the piston that was making the knocking went thru the oil pan there is now a 4 inch hole in the oil pan where you can see the piston from the pan so it needs a new engine so i guess it was not the tensioner lol

 

Bummer dude. Now you are without a truck after all. I say screw another 4 banger... throw in a 5.0. Unless you're concerned about gas mileage.

 

i rebuild a wankle engine and it was a struggle. Just about same experience as you and it took a couple months. It was huge overhaul and cost way more than expected. Get an estimate from a local shop for the rebuild, and if it sounds good go for it. If you really want the experience of rebuilding an engine (which is worth it) you are going to suffer without the truck for a while, but it is worth it.