I'm looking for a motor to build up while I drive this one to death. I found a guy who has two d16y8's for hella cheap. One has a fried piston, the other a spun bearing. Which is easier to fix in terms of cash and machine work?


Modified by ericschimmel at 3:42 AM 12/3/2007

 

depends how bad the piston damaged the piston walls. if the piston walls are fine then all you need to do is re-hone it and install new pistons.

a spun bearing you might need a new crankshaft depending how bad it is. but you will at LEAST need to machine the crank journals.

so it all depends how extensive the damage is. id go with the spun bearing. because if the piston is fried, you dont know if it hit the piston walls and scored them beyond repair. at least you can use YOUR crank for the one with the spun bearing if you need to.

 

So, the spun bearing is probably the best bet? Is there anything I should look for when I go to look at them?

 

look at the cylinder walls, make sure they arent scored or scratched, tell him to show you the spun bearing and inspect the rod and crank shaft journals fo scratches. if its scratched or black in color on the crank journal then you will need to buy a new crank or use your crank out of the motor u got now.

 

if there is a spun bearing..isn't there a terribly good chance that the crank is more than likely effed or on its way to being effed?

 

Scratched cylinder walls/bad pistons are much easier to fix than spun bearing.

I personally would never rebuild/repair any engine with a spun bearing. It's more than just replacing a crank - you'd need to also have the bearings oversized, the main journals machined, etc.

 

yea but if its a melted piston theres a good chance that the cylinder is toast also.

 

just find a good block they go for like 100 bux

 

$100 for a good block? Where?

 

right here
http://www.hondamarketplace.co...29854

 

Your in NY. And it says pickup only. I'm not driving to NY and shipping would rape me in the hiney hole with no lube.

 

pm'ed

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prettylew &raquo;</TD></TR><TR><TD CLASS="quote">yea but if its a melted piston theres a good chance that the cylinder is toast also.</TD></TR></TABLE>

Maybe, but at least with a damaged cylinder the block can be resleeved and pistons can be properly sized and the block would actually be stronger than before.

Machining a crank and having bearings oversized will always be a question mark.

I'd much rather bite the bullet and get a block resleeved than having a crank replaced/turned.

Replacing the crank sucks because the main caps are line honed with the block, and it isn't possible to get a 100% perfect match with the replacement crank, main bearing size-wise.