New donor recommendation
#1
Posted 09-14-2011 08:17 PM
Car has 200k miles
Bad thing, the engine has a slight tick, I have read up alot about it and it sounds like HLA's to me but I am not 100% sure. When I drained the oil it had a slight silver coloration, oil did not look like it had water but I will cut the filter tomorrow to make sure there are no big chunks of bearings. I used Valvoline 20w-50 that was given to me just to try out, probably need lighter oil but the tick is still there.
What suggestions do you all have to service this engine. Not sure what all I should throw at it right off the bat but I was hoping I could get good use out of this engine.
#2
Posted 09-14-2011 08:31 PM
The downside, however, is that if the bearings decide to part company, it will probably be catastrophic. Rather than having a rebuildable core, you could end up with a pile of scrap. Not the end of the world, and perhaps even the right course, but go in with your eyes open.
BTW, evaluating noises by recordings is very spotty. That said, to my ear that doesn't sound like HLA noise, and I wouldn't call it "minor". I hear more air in the noise, and more resonance. What comes to mind is a burnt intake valve (or several), but don't go taking that to the bank. What did you rebuild?
#3
Posted 09-14-2011 08:42 PM
My biggest fear is a bearing giving out, I have dealt with it a few times in my dirt track career and it is never a good feeling.
I wish I had a better recording but there is alot of air noise when I rev it. All I have done to this engine is completely clean the throttle body, reinstalled TB and air intake, put the valve cover back on, plugs and wires, and figured some wiring they had disconnected.
#4
Posted 09-14-2011 08:43 PM
#5
Posted 09-14-2011 08:48 PM
#6
Posted 09-14-2011 08:51 PM
#7
Posted 09-14-2011 08:52 PM
Ah, so you haven't been inside the engine at all. I had assumed by "rebuilt" you had at least taken the head off. So now, do a leakdown. What you'll probably find is very large values in two adjacent cylinders (either 1/2 or 3/4). You'll also see air escaping from the valves of the cylinder you're NOT pressurizing. What's probably happened is you've blown the head gasket, between two cylinders, and air is getting pumped back and forth between them. The leak probably doesn't include either oil or water passages.I figure a blown head gasket would lead to water in the oil, depending how long it has been blown.
All I have done to this engine is completely clean the throttle body, reinstalled TB and air intake, put the valve cover back on, plugs and wires, and figured some wiring they had disconnected.
#8
Posted 09-14-2011 08:56 PM
I will have to get this checked out tomorrow, my father thinks it is nothing to worry about but I DO NOT want to take any risks. I guess my first step will be the leakdown and a compression test tomorrow.
#9
Posted 09-14-2011 09:02 PM
#10
Posted 09-14-2011 09:04 PM
#11
Posted 09-14-2011 09:22 PM
Also beware that somebody will soon pop up and tell you that you should replace every XXX regardless. Neither of us is completely wrong.
#12
Posted 09-14-2011 09:28 PM
Also beware that somebody will soon pop up and tell you that you should replace every XXX regardless. Neither of us is completely wrong.
I don't replace my belts just because I accidentally watched an adult film.
-tch
Build: www.tomhampton.info
video: vimeo.com/tomhampton
Support: X-Factor Racing
I didn't lose, I just got outspent!
#13
Posted 09-14-2011 11:30 PM
Good possibility Jim, I don't do much engine work myself unless it is a sbc 350 lol
I did too and it's not too different once you get your head around the injection, valve train and computer. It's a fair amount smaller and other things I found most different were the deep well plug wrench and needing a different valve spring tool and 12 pt for the head bolts.
Sure seems like a head gasket. Leak down will tell. I'm just buttoning up a rebuild of a 92 1.6 of new HLAs, cleaned cores, measured all of the valve train, cores and rotating assembly, seals and gaskets, rings and bearings. The cores speced well but some of the valve train parts are getting close to tolerance. If it's a 200k street engine I'd at least give it a measure before racing it. If by some chance you spin a bearing you'll go from having a good block and perhaps rod and crank cores to having a bunch of broken iron.
#14
Posted 09-15-2011 02:16 AM
Texans must be undersize. I have to.I don't replace my belts just because I accidentally watched an adult film.
#15
Posted 09-15-2011 06:48 AM
#16
Posted 09-15-2011 08:27 AM
Head gaskets can blow 3 ways. Keep the comments to your selves!!!
1-externally, leaks oil or water out the side of the block. My old Mustang GT3 car used to do this.
2-Internally to a water jacket. This will usually cause a chocalate milk shake effect in the oil, but not always.
3-Internally between cylinders. Usually between the center cylinders as the head warps due to over heating.
Dave
Dave Wheeler
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#17
Posted 09-15-2011 12:09 PM
Sounds like valve train noise to me. But a LLOOOTT of it. I would be very leary of racing this engine without a complete rebuild.
Head gaskets can blow 3 ways. Keep the comments to your selves!!!
1-externally, leaks oil or water out the side of the block. My old Mustang GT3 car used to do this.
2-Internally to a water jacket. This will usually cause a chocalate milk shake effect in the oil, but not always.
3-Internally between cylinders. Usually between the center cylinders as the head warps due to over heating.
Dave
::ROFLMAO::
I have lots of comments for XXX and externally and internally blown...I just can't bring myself to type any of them!!!!!!
I'm a little worried that dmathias may explode trying to contain himself.
-tch
Build: www.tomhampton.info
video: vimeo.com/tomhampton
Support: X-Factor Racing
I didn't lose, I just got outspent!
#18
Posted 09-15-2011 03:27 PM
You can check valve lash and see what you get, that may get some of the noise out. But I would do a leak down and compression and likely start from scratch and rebuild or replace. At 200k, over heated.. it is an accident waiting to happen IMO. You are likely to take a good rebuild-able block, head and crank and ruin it when it explodes.
Jim
East Street Auto Parts
Jim@Eaststreet.com
800 700 9080
#19
Posted 09-15-2011 08:40 PM
#20
Posted 09-15-2011 09:59 PM
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