Project Dilemma

[tex]

Ok, So I have recently stripped down a complete donor gts, so I have everything I need for my sr5 -> gts conversion. My only problem is that I'm not really sure on the condition of the Blue top I pulled out. It cranked, but there was a knock in it. I've never done motor work, but have it on a stand and pulled the oil pan. The bearings(?) around the crankshaft/rods all have slight play, and there was some metal grit around the baffle/filter thing on the oil pan. I figured it would probably be best to just completely rebuild it if I use it.

The problem is, should I spend a ton of money having it rebuilt, or buy a new engine completely? If I would be better of getting a new engine, should I even stick with a bluetop, or can I put a redtop in with my harness, or even a silver or blacktop?

Any input is appreciated. Thanks

[dr.occa]

you really can't purchase a "new" 4age motor per se but you can purchase one already re-built from someone.

getting a crank turned within salvageable clearances is around $50. have a block dunked and cylinders honed is about $60 to $75. then purchasing rod, main and thrust bearings could range from $40 to $90.

that should help you decide which route you may want to take.

[GTSRolla34]

You really won't know the extent of the damage to the old engine until you tear it down. It could be a very affordable rebuild (around $4-600 in parts and $1-200 in labor depending on where you take it).

If the block needs to be bored over to correct excessive wear, then you're looking at upping the cost for oversized pistons/rings (which can be affordable if you get the ebay pistons). I think rebuilding it would be better. You always run the risk of buying an engine that could blow anyway. By rebuilding it you know the quality of the work going into it.

[mooreofit]

grab low milage 4afe or 7afe bottom end from a 93-97 corolla. make sure you get the 4afe flywheel too.bolt all the 4age head and accessories to it. if you use the 7afe you need a different timing belt. but this will lower your compression but you can get one for 100 bucks or so if you look around. a rebuild is going to be around 500 bucks for machining and parts if you assemble it yourself but it doesnt sound like you have to much confidence in reassembling the bottom end. so it much just be a better\cheaper option to go with used. just make sure its low milliage. look inside oil cap if theres sludge or even a goldish varnish move on to the next.

[16vHachi]

I rebuilt my 7 rib redtop just shy of 300 I believe
That's wil every thing new except for pistons

[tex]

Thanks for the advice guys. I guess its time for me to take a hands on crash course in motor rebuilding. If I get stumped ill just take some pics and bug yall some more. Wish me luck, Haha.