Join Date: Jun 2009
Location: Baton Rouge, LA
Mad Max is offline
Re: 2.8 valve adjustment woes.
Originally Posted by crazy_driver_78
This thread is almost 4 years old. Can I hijack this thread? I have a similar problem to the original post.
You guys have already been a big help for me before (refer to this
thread, post #19). It also goes without saying that your information is just as invaluable as it is appreciated.
It all started a few weeks ago when I spun a bearing. Refer to this
, post #23, for details. My sig will give current vehicle details. I replaced the bottom end with a crankshaft and bearings from an '85 Blazer 2.8. I never cracked open the top end of the engine. I also used and primed the oil pump with a drill before dropping the distributor. New oil, new filter. I fired it up last night and have alot of valve clatter from both cylinder banks. I asked my mechanic about it. He said to pop the valve covers and look for broken springs, oil squirting out of the rocker arms, etc. I peeled the 2-4-6 valve cover off and fired it up. I still have oil pressure of 40lbs at cold idle, but only a trickle of oil seeping out cylinder 4 exhaust rocker. I think it is only fair to ass-u-me popping the 1-3-5 valve cover will yield the same results so I left the other side of the engine alone for now. I asked my mechanic about the lack of oil in the top end. He suggested two possible scenarios: shrapnel from the grenaded rod bearing stuck in the oil passage feeding the top end or a misaligned main bearing starving oil flow.
Are there any opinions as to the plausibility of these scenarios? Any body else have any ideas?
Thanks again guys,
Yeah, you might have shrapnel floating around. Pull your oil stick and see if it has any metalic chips. I would also suggest that you change the oil again with the filter. Cut the filter open and see if it has metal in it. You may get lucky and the lower end will hang on, but extra metal in an enigne is not too good...
Since you have already run the engine, you may be at the point of no return. After you change the oil and filter, run it again and let it warm up. You may get lucky and the clatter will clear up. One other point, the oil pressure will drop once the engine is warm. If it survives, you may want to instll a new high volume oil pump. And Mr. Lucas may help you also...
1)'82 S10, 383, 700R4, Shorty
2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck) 3) '90 S10 2.5, 5 speed shorty
4) '91 S10, Built 3.4, 5 speed shorty (Voodoo)
5) '92 S10, 2.5, 5 speed shorty, (Barbie)
6) '83 S10, 327, TH 350, shorty (13.00 best)
7) '92 S10, 2.5 5 speed, Shorty
8) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.