|09-27-2012 07:49 PM|
FYI only...I used to work at an outfit that sold distributors. They had a run of GM distributors that were sent out with undersized journals "at the base of the housing". The two journals should be tight enough to seal the oil galleries in the block but still drop in and turn.
If they are undersized the oil leaks past the journals resulting in reduced oil pressure throughout the entire gallery. In some cases the pressure was so low that the customer lost bearings.
I mention this in case you installed a different distributor OR polished the heck out of the journals. Some guys think polishing the distributor is a good thing...which it isn't.
Sorry can't remember the "go/no go" journal diameter.
|09-27-2012 05:48 PM|
|lg1969||You are not alone. I had to pull my 406 three time because of oil pressure problem. That was no fun for me either. Turn out to be a bad distributor.|
|09-27-2012 05:40 PM|
|helrazr3||thats ok about the drift, i should be up to pull the heads sunday or monday so i will have a clearer picture. its really a conflict of emotions i want to tear it all down to see what happened but at the same time i was really bummed out and po'ed that after all that work time and money here i am ripping it all apart again when this is the time i am supposed to be finally out driving it|
|09-27-2012 11:29 AM|
Looking at your lifters, it appears obvious that you have some premature wear. Those "bullseyes" are what you would expect to see on a high-mileage engine.
That being said ... is there enough wear there to cause the iron powder that you described earlier? I doubt it. Have another look at the pic that I posted earler. The damage was very obvious, and there was a fair amount of debris in the bottom of the pan. Luckily, I could find no evidence to suugest that it had been picked up by the pump, and the bearings were clean.
Take some pics of the cam lobes, down through the lifter bores.
As far as pre-lubing ... yes, I have learned just how vital that is!
A 1/4" cordless drill just doesn't cut it!
The notion of "it stalled the drill, so it will have pressure as soon as the engines fires" is a fallicy as well.
During "round 2", I used a 3/8" air drill on the correct oil pump primer tool. It was just barely up to the task with 125 PSI in the tank. I had to run that drill for SEVERAL minutes before I had oil coming out of all of the pushrods.
I squirted liberal amounts of Lucas Assembly Lube on the cam lobes, lifters, pushrods, rocker arms ... everywhere, with the 'trickle down' thought in mind.
I also used a full bottle of Comp Cams #159 Break-in Additive. The results, as near as I can tell, were sucessful this time.
My plan, going forward, is to continue using a couple ounces of this additive with every oil change, in order to "bolster" the ZDDP content.
|09-26-2012 07:21 PM|
|helrazr3||maybe i should just start another thread|
|09-26-2012 11:42 AM|
Wix Filters / Wix Motorsports / Racing Products
|09-25-2012 08:46 PM|
|09-25-2012 06:50 PM|
I also use the HP4. Its burst strength is rated at 300 psi. It incorporates a larger rubber oring too. Never an issue.
I do know they had a recall and a bad reputation some years back, I think that problem was resolved.
|09-25-2012 12:49 PM|
The Fram HP4 filters to 20 microns while the racing Wix/NAPA only goes to about 60 microns.
I have used the Fram HP filters in hundreds of engines, including every professional racing operation I have been associated with. I have no knowledge of their street filters and cant see why anyone would use them on a SBC when the racing filter is $10.
One thing I have run into on some regular parts store filters is the use of assembly lubes that are incompatible with the filter media which causes the filter media to swell and restrict flow. Volvo had a problem with customers using Slick50 with the OE filter and having engine failures result from the loss of pressure.
|09-25-2012 11:32 AM|
|lg1969||Which Fram oil filter causes low oil pressure. I use HP-4 and never gave any problem. Been using HP-4 for over 20 years.|
|09-25-2012 10:50 AM|
There are tons of comparison being done by people on you-tube ... but most of them are being filmed extremely biased and downright immature know-nothings! ( even some guy urinating on Fram and/or using them for target practice. *Real* convincing!)
Know what you're comparing ... the anatomy and compsition.
There was a guy saying that NAPA Silver and NAPA Gold were pretty much identical ... other than the "color of the valve" and the number of pleats (45 versus 54 in the samples he compared)
The "color" is significant. The red silicone valve remains flexible under the conditions (heat and exposure to motor oil and contaminants) that cause the black rubber valve to harden and eventually lead to filter bypass. This typically occurs in the range of 5,000 km (3,000 miles) whereas the silicone valve filters would extens this to 8,000 km (5,000 mi) +
# of pleats ... 54 is 20% more than 45.
There may be differences in the quality of the media as well.
paper vs synthetic media?
NAPA has recently released a "Platinum" filter that is designed to be used with synthetic oil AND extended drain intervals.
So ... spend $1.99 on a Fram if you like, but educate yourself to the advantages of premium brands.
|09-24-2012 09:00 PM|
|09-24-2012 07:01 PM|
i was able to start tearing down the motor today i didnt get the heads off but i did pull the intake and the rockers push rods and lifters it looks like #2 and #8 exhaust lobes are bad i cant see the cam yet but here is a few pics of what i found and a link to the album that has more for those who are interested
chevy lifters pictures by helrazr3 - Photobucket both of those pushrods were full of bad looking oil when i pulled them they were the only 2 that had oil inside them. i know the pics of the lifters arent that good there was a lot of glare when i was taking them but i guess you get the idea
|09-20-2012 08:36 PM|
your assuming he has a good drill I guess.
I assume he doesn't but there is more that sounds fishy here and your probably right..
The whole binding shaft stuff is weird, I suspect there is more to this story.
The explanations are lacking. He has had the pump apart and I suspect somethings up there.
|09-20-2012 08:02 PM|
I have a buick 430 wildcat with an external oil pump and after it sets for a month I always pull the dist. and prime the oil pump with a 3/8 drill and I have never had to use a 1/2 drive drill yes with presure it will only have a little resistance. If your drill was smoking then you have a pump with a gear problem.
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