engine problem

Bill UK · 10-15-2006, 11:33 AM

The first thing to check is the crankshaft pulley they are known to come lose and make a clattering noise, but by your description it sounds like big end bearings. This is what happened to me last year, when starting the engine it would make a clattering noise and then disappear, if I increased the revs to about two thousand it would come back.Stripped the engine out to find one of the big end shells had spun.Sent the crankshaft away to be reground and tested unfortunately the crank was cracked which often happens when a shell has spun or the engine has seized. Spent the next few months looking for a recondition crankshaft at a reasonable price, plenty in the US but none in the UK, ended up buying a second engine and using the parts from both to get back on the road. Pic of bearing shell below.

nickalvrz · 10-15-2006, 08:56 PM

well I dont know anything about engines except basic maintanance, but I'm going to tear down the engine and I'm going to replace the crankshaft and the bearings around it to be safe. If I see that there is too much damage then I will just get another engine...just start naming off some parts that I should replace to be safe...

Robes88 · 10-16-2006, 02:51 AM

well it sounds like u may just need to rebuild the bottem but it also mint be wise to do some work on the top seeing as how your already tearing into it. i would replace the piston rings while your doing everything else and maybe some valve work but its up to u. for the rings u'll need 6 oil and 12 compression. see if u can find some TRD racing cames at a good price, mite be worth your time.

10-15-2006, 11:33 AM	#1
Bill UK AEM EMS Join Date: Jul 2006 Location: UK Posts: 891	The first thing to check is the crankshaft pulley they are known to come lose and make a clattering noise, but by your description it sounds like big end bearings. This is what happened to me last year, when starting the engine it would make a clattering noise and then disappear, if I increased the revs to about two thousand it would come back.Stripped the engine out to find one of the big end shells had spun.Sent the crankshaft away to be reground and tested unfortunately the crank was cracked which often happens when a shell has spun or the engine has seized. Spent the next few months looking for a recondition crankshaft at a reasonable price, plenty in the US but none in the UK, ended up buying a second engine and using the parts from both to get back on the road. Pic of bearing shell below. Last edited by Bill UK; 10-15-2006 at 12:54 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem seperating engine from manual tranny	Gengus	MKIII Supra	7	01-29-2008 12:10 AM
Engine Problem	86toySupra	MKIII Supra	3	04-17-2007 04:50 PM
Engine problem	malli	Non-Generation Specific Questions	3	08-01-2006 12:44 AM
engine problem...	sboy	MKIII Supra	6	02-03-2006 01:09 AM
Jdm engine rev problem	Wicked19	MKIII Supra	3	11-08-2005 02:42 PM

10-15-2006, 08:56 PM	#2
nickalvrz Stock Join Date: Aug 2006 Location: Fort Wayne Posts: 29	well I dont know anything about engines except basic maintanance, but I'm going to tear down the engine and I'm going to replace the crankshaft and the bearings around it to be safe. If I see that there is too much damage then I will just get another engine...just start naming off some parts that I should replace to be safe...

10-16-2006, 02:51 AM	#3
Robes88 Stock Join Date: Sep 2006 Location: Richmond hill ON Posts: 18	well it sounds like u may just need to rebuild the bottem but it also mint be wise to do some work on the top seeing as how your already tearing into it. i would replace the piston rings while your doing everything else and maybe some valve work but its up to u. for the rings u'll need 6 oil and 12 compression. see if u can find some TRD racing cames at a good price, mite be worth your time.