Strange sound from rebuilt engine...
02-14-2013, 09:35 AM
#166
Race Director
I think he's done both at this point, one correct, the other not.
where is the big leak coming from?
02-14-2013, 03:03 PM
#167
Burning Brakes
Thread Starter
Hey peter if you have isolated the noise to the area of the lifters then maybe that is the issue they are not "pumping up" as mine did not untill i drove it. Mike and expeciallly Steve you guys have done engine rebuilds and lifter replacements, did yours quite down while idling afterwards without driving? I know mine didnt even though i soaked them in oil overnight. I certainly dont want you to drive your car and damage it but that is what i did and it worked. When you did the top end work did you replace the oil pressure sender? my original one and a "new" replacement one didnt work properly both went to zero when i took my foot of the gas and the warning light came on everytime i stoped. My third sender seems to work fine.
good luck......maybe its overpriced Porsche mechanic time?
good luck......maybe its overpriced Porsche mechanic time?
02-14-2013, 03:09 PM
#168
Burning Brakes
Thread Starter
Oil pressure is the same as before. On cold start-up it goes up to 3 - 4 and as the oil warms it drops to one or below.
02-14-2013, 03:23 PM
#169
Burning Brakes
Thread Starter
I agree with Mike's first question. How is the oil pressure now? Lifters may be pretty dry at this point and take a bit to pump up. The bummer is I had suggested this after your initial post and you have had to struggle with it for a week now. Your oil level was high in the crank for a bit so you may see some leaks at the case through bolts etc. If the rest of your oil flow is good the leaks may subside completely.
On a side note I have to give Pelican Parts a big thumbs up.
I ordered the gasket yesterday at 3:45PM and I had it in this morning's mail.
02-14-2013, 03:23 PM
#170
RL Technical Advisor
It can take time to get the lifters full of oil, even when they have been "marinating" overnight in a pan.
You need 1 bar/per 1K RPM, when hot for oil pressure.
Regarding the 574; one of the biggest DIY errors I see is the excess use of that stuff apparently fearing oil leaks. Its very translucent when applied properly and difficult to see. Most people use FAR too much and it can migrate to places where it shouldn't be.
"Less is more" is the guiding principle for 574.
02-14-2013, 04:01 PM
#171
Burning Brakes
Thread Starter
Yes, correct. Both are NOW oriented correctly. The leak is coming from the right chain housing retension cap. Probably because I re-used the gasket. I have a new one so this should be a non-issue.
02-14-2013, 04:13 PM
#172
Burning Brakes
Thread Starter
Peter,
It can take time to get the lifters full of oil, even when they have been "marinating" overnight in a pan.
You need 1 bar/per 1K RPM, when hot for oil pressure.
Regarding the 574; one of the biggest DIY errors I see is the excess use of that stuff apparently fearing oil leaks. Its very translucent when applied properly and difficult to see. Most people use FAR too much and it can migrate to places where it shouldn't be.
"Less is more" is the guiding principle for 574.
It can take time to get the lifters full of oil, even when they have been "marinating" overnight in a pan.
You need 1 bar/per 1K RPM, when hot for oil pressure.
Regarding the 574; one of the biggest DIY errors I see is the excess use of that stuff apparently fearing oil leaks. Its very translucent when applied properly and difficult to see. Most people use FAR too much and it can migrate to places where it shouldn't be.
"Less is more" is the guiding principle for 574.
The oil pressure when hot is about 1K at idle and higher when rpms increase so I should be OK there.
Regarding the lifters, in your experience how long does it usually take and at what rpms? I have not done the 2k rpm 20 minute break-in yet. Perhaps doing that would get them pumped up?
Yes. lesson learned on the 574!
Hope all is well in OR.
02-14-2013, 04:31 PM
#173
Race Director
Hi Steve.
The oil pressure when hot is about 1K at idle and higher when rpms increase so I should be OK there.
Regarding the lifters, in your experience how long does it usually take and at what rpms? I have not done the 2k rpm 20 minute break-in yet. Perhaps doing that would get them pumped up?
Yes. lesson learned on the 574!
Hope all is well in OR.
The oil pressure when hot is about 1K at idle and higher when rpms increase so I should be OK there.
Regarding the lifters, in your experience how long does it usually take and at what rpms? I have not done the 2k rpm 20 minute break-in yet. Perhaps doing that would get them pumped up?
Yes. lesson learned on the 574!
Hope all is well in OR.
What did it have before the engine work?
02-14-2013, 05:27 PM
#174
Burning Brakes
Thread Starter
02-14-2013, 06:30 PM
#176
Burning Brakes
Thread Starter
02-14-2013, 10:52 PM
#178
Drifting
Shouldn't your oil pressure peg at cold start-up? Even at idle I would expect more than 1 bar at normal operating temps. This concerns me. I would try the $20 mechanical gauge and verify your engine's actual oil pressure as suggested by others. Perhaps there was a pre-existing problem such as with the relief valve (sorry I don't recall whether you check this already)
02-15-2013, 06:22 PM
#180
RL Technical Advisor
Hi Steve.
The oil pressure when hot is about 1K at idle and higher when rpms increase so I should be OK there.
Regarding the lifters, in your experience how long does it usually take and at what rpms? I have not done the 2k rpm 20 minute break-in yet. Perhaps doing that would get them pumped up?
Yes. lesson learned on the 574!
Hope all is well in OR.
The oil pressure when hot is about 1K at idle and higher when rpms increase so I should be OK there.
Regarding the lifters, in your experience how long does it usually take and at what rpms? I have not done the 2k rpm 20 minute break-in yet. Perhaps doing that would get them pumped up?
Yes. lesson learned on the 574!
Hope all is well in OR.
Now,.......here is a KEY consideration at this juncture: camshaft break-in is very very critical and MUST be done in the first 15 minutes immediately from initial startup. In other words, one starts the engine and immediately gets the RPM's to 2000-2500 for at least 15 minutes. In most cases, that gets them full of oil.
