oil pressure by-pass valve blocking?
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Intercooler
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I did and kept collapsing filters on the inside. I mainly did it to protect my turbo but will not do it again. HTH
LEAVE THE BY-PASS ALONE!!!!!!!! I took the by-pass out of my oil pump. Just like Jesse said it collapsed the oil fiter. It also blew the the oil gallery plug behind camshaft sprocket out. After we figured out that it blew the plug we replaced it. I also put the original housing with the by-pass back on. Then it blew the timing chain because of the plug went between sprocket and the chain. This happened 160 miles away from home. So after waiting two years to get my Regal running. My motor is back on the engine stand. Nothing is more frustrating than walking out into the garage and seeing it on the stand.
Great !!!!
My engine builder already did this and the thing is sitting nicely in the car just waiting to turn over for the first time after a rebuild!
....please tell me this won't be a problem since I'm running an oil filter relocation kit (one from p.t.)...I can see how higher pressure would cause that little bitty filter on stock setups to collapse......but the big one too????
What kind of pressures are you guys running to cause the collapse?
!!!!My engine builder already did this and the thing is sitting nicely in the car just waiting to turn over for the first time after a rebuild!
....please tell me this won't be a problem since I'm running an oil filter relocation kit (one from p.t.)...I can see how higher pressure would cause that little bitty filter on stock setups to collapse......but the big one too????
What kind of pressures are you guys running to cause the collapse?
Will not be a problem with the big oil filter. If a cam plug blows out it has nothing to do with the bypass. The bypass is before the filter if pressure is a problem it will be before the filter and not after. You cannot block the bypass if you use a 47 or a 52 filter and stock pump. If you use a Hi volume pump you should not block the bypass even with the large 24 filter but you might get by with it on the relocation filter kit.
Intercooler
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I collapsed them all PF-24, etc.. You may be ok if you don't blip the throttle until the oil pressure goes down below 30 PSI and use thin oil. FWIW I changed mine back to another filter adapter after the fact so if it doesn't work just swap them. You will know by the second oil change if it will work or not. Look inside and see if the mesh is pushed in. If it isn't you are good to go!
If I remember right, don't these filters come with there own by-pass valves....and if that is true, that means unfiltered oil will make it to the turbo!
....It sounds like the consensus is that the chance of collapse is high and especially in my case, not worth the risk $$$$$!
I think I'll just make sure the engine builder puts it back to normal to avoid any problems.
Thanks for the help,
Mark
....It sounds like the consensus is that the chance of collapse is high and especially in my case, not worth the risk $$$$$!
I think I'll just make sure the engine builder puts it back to normal to avoid any problems.
Thanks for the help,
Mark
As Lonnie(quickt) said, you cannot block the bypass if you are running a hi-volume oil pump...You can block the bypass if you are running the stock oil pump and the Biggie filter and DON'T use any thicker oil than 10w30...Let the car warm up in cold weather before you drive it so the oil can thin out a little and you shouldn't have any problems...
Intercooler
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It only takes about 10 minutes and don't let him tell you different.
Big problem!!! In order to get the "plug" to stay in, he modified the hole for the valve. As a result, we cannot use the factory piece!!!!!!
Now, I need to find a new/old part to replace the bad one....guess what, like everything else on this car....hard to find!!!!!!
Anyone help me out? My guess is someone has to have a replacement, but who and where (all I know is it won't be found at a dealer).
Seriously, if I can't find this casting, what am I supposed to do besides run the thing and take a big chance on collapsing the filter and potentially screwing up a (now) very expensive motor and new turbo!
Mark
...or...does anyone have this done with the reloc. kit and high vol. kit that doesn't have problems?????
This sucks!!
Now, I need to find a new/old part to replace the bad one....guess what, like everything else on this car....hard to find!!!!!!
Anyone help me out? My guess is someone has to have a replacement, but who and where (all I know is it won't be found at a dealer).
Seriously, if I can't find this casting, what am I supposed to do besides run the thing and take a big chance on collapsing the filter and potentially screwing up a (now) very expensive motor and new turbo!
Mark
...or...does anyone have this done with the reloc. kit and high vol. kit that doesn't have problems?????
This sucks!!
The Radius Kid
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You could look in an oil filter book and see if there's a filter with the internal bypass that interchanges with the pf24.
Why does everyone block off the bypass
As far as I know,there is no requirement for 100% of the oil to pass through the filter. If enough pressure builds up due to a clogged filter it will leak or blow off. Why take the risk? In cold weather I bet every car made bypasses the filter partially. Is there some huge gain from doing this?
As far as I know,there is no requirement for 100% of the oil to pass through the filter. If enough pressure builds up due to a clogged filter it will leak or blow off. Why take the risk? In cold weather I bet every car made bypasses the filter partially. Is there some huge gain from doing this?
Mr URL
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Personally I don't like the idea or do it myself but here is some more reading:
http://www.geocities.com/rad87gn/tech/bypass.html
The bypass is there for many reasons. I wouldn't recommend this with any street/strip cars or daily drivers. Our engines lasting over 100K miles to me means it's not a big issue.
I think it would be better to keep the oil in the engine even if a little dirtier than have a huge chance of blowing that nice pretty clean oil onto the ground. Just change oil/filter often. It works and is cheap.
http://www.geocities.com/rad87gn/tech/bypass.html
The bypass is there for many reasons. I wouldn't recommend this with any street/strip cars or daily drivers. Our engines lasting over 100K miles to me means it's not a big issue.
I think it would be better to keep the oil in the engine even if a little dirtier than have a huge chance of blowing that nice pretty clean oil onto the ground. Just change oil/filter often. It works and is cheap.
The Radius Kid
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Personally,I'd be more worried about what is getting to the engine than what gets to the turbo.If you run a synthetic oil with a big enough filter,give it a decent warmup,and don't drive like a madman for the first mile or so,you should be just fine.
Chad,
Thanks for the link...it gives me some relief if I can't find the part. However, he didn't say anything about a high volume oil pump in the test...which means I'm still nervous about starting and running this car as is.
...Talk about being between a rock and a hard place
At least with a roller cam I don't have to worry about a premature cam failure as much and my precious turbo (not to mention entire engine) won't be suceptible to "free" metal. I guess I'd still like to see someone running the same setup as me.....
Thanks,
Mark
Thanks for the link...it gives me some relief if I can't find the part. However, he didn't say anything about a high volume oil pump in the test...which means I'm still nervous about starting and running this car as is.
...Talk about being between a rock and a hard place
At least with a roller cam I don't have to worry about a premature cam failure as much and my precious turbo (not to mention entire engine) won't be suceptible to "free" metal. I guess I'd still like to see someone running the same setup as me.....
Thanks,
Mark
The Radius Kid
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Don't loose too much sleep over it.Give the car a decent warm up and you'll be fine.
The only time the bypass becomes an issue in a normally running engine, is with cold oil.It's there to bypass the flow restriction from the filter due to the lack of flowability of the oil.
Your turbo won't see any problems because it doesn't spin too much at low rpm's.
The key will be to get the oil up to temps before you get *busy*.
Standard race car procedure for more than one racer on the board.
The only time the bypass becomes an issue in a normally running engine, is with cold oil.It's there to bypass the flow restriction from the filter due to the lack of flowability of the oil.
Your turbo won't see any problems because it doesn't spin too much at low rpm's.
The key will be to get the oil up to temps before you get *busy*.
Standard race car procedure for more than one racer on the board.
If you are looking for a new(or used) oil pump cover with the oil pump bypass still intact, I believe TA Performance sells new ones(kind of pricey), or just hit the salvage yards and look for any 3.8L Buick motor and pull the oil pump cover...They are all the same...If the used one you get is worn, either use the booster plate setup(NOT THE HI-VOL setup) or have your machine shop resurface the thrust surface of the oil pump cover...
I have run with the by pass blocked for roughly 10 oil changes. I've run as high as 20w-50 oil and 15w-50 synthetic with no problems. I also shift my car as much as 6500 and havent had a problem. I think the main issue is not using a high volume oil pump and letting the oil heat up a few minutes before driving, along with a good quality oil filter.
