BBF oiling problems

[llepd]

I have a bbf that keeps losing oil pressure, after hard runs. spun bearings on one last year. changed to 10 qt rr sump pan, high volume pump, windage tray and last weekend lose oil preasure again have not torn down yet but suspect same thing. Any ideas? I'm new to jet boats. here is my theory jets are not made for long runs and when catching air it over loads the engine causing bearing failure. open for ideas. Don't what change to chevy this year.

[hack job]

do you have any idea what your oil temp is after your wide open runs? also what kind of rpm are you running it at. on a side note loading and unloading your pump is not goof for the motor or the pump. ;)

[llepd]

do you have any idea what your oil temp is after your wide open runs? also what kind of rpm are you running it at. on a side note loading and unloading your pump is not goof for the motor or the pump. ;)
DON'T HAVE OIL TEMP GAUGE, WATER TEMP 140 TURNING 5000.

[Danhercules]

In my old boat, (BBF) when I would make WOT runs for 2 min I would watch the oil press. After a bit the pressure would drop a few psi, I then let off and cruised nice a slow to cool the oil back down. Oil temp would be a good idea.

[sleekcrafter]

Check your crank journals, there are some cranks out there that are not exactly round, and really mess with your oil pressure.

[roostwear]

To get to the root of your problem, an little more detail is needed. When you say you "lose" oil pressure, how low does it go, does it come back up as the oil cools, and how many quarts are you running in your 10 qt pan? It often helps running it a quart low to keep from aerating the oil. Your problem can be that, oil temp breaking down the viscosity, running a Fram filter, or all of the above.

[llepd]

To get to the root of your problem, an little more detail is needed. When you say you "lose" oil pressure, how low does it go, does it come back up as the oil cools, and how many quarts are you running in your 10 qt pan? It often helps running it a quart low to keep from aerating the oil. Your problem can be that, oil temp breaking down the viscosity, running a Fram filter, or all of the above.
OK last time oil pressure gauge was at 0 shut it down and let set restarted it pumped back up after few seconds. running 9 quarts oil, checking oil doesn't seem deluted, i'm running fram filter, 20-40 valvo racing oil. limped home put trailer seemed to have oil preasure until you put loas on it and it would drop. goin to put in water tomorrow just to check it again but I'm afraid it is to late.

[roostwear]

If it were me, I would replace the filter with something OTHER than a Fram (I use Purolator), cut the old one open and inspect it.
I assume you didn't have the pressure problem after you replaced the pan and that when you put it on you checked to make sure you had 3/8" clearance between the pickup and the pan.

[058]

OK last time oil pressure gauge was at 0 shut it down and let set restarted it pumped back up after few seconds. running 9 quarts oil, checking oil doesn't seem deluted, i'm running fram filter, 20-40 valvo racing oil. limped home put trailer seemed to have oil preasure until you put loas on it and it would drop. goin to put in water tomorrow just to check it again but I'm afraid it is to late.
There can be alot of reasons for losing oil pressure and bearings. Clearances too tight? Mains not in alignment? Crank not ground and polished correctly? Rods not in good condition? Engine detonating? Oil not getting to the mains due to internal leakage from a missing plug or worn lifter bores? Wrong bearings? Oil breaking down? The list goes on and on. Spinning the engine 5K should be no big deal but some provisions must be made. Start with the block and have it align honed, have the crank ground and polished by a good shop that can do it correctly[should be ground in the rotation of the engine and polished in the opposite rotation] get a good set of steel rods[Crower, Oliver, Carrillo etc. or if you are on a tight budget a set of Eagles or Scat rods will work just fine for your application. Set your bearing clearances as followed: Mains: .003-0035" Rods: .0025" rod side clearance: no less than .020" Have the block zero decked to help prevent detonation,check your tune up and confirm your timing marks. Start with 34-36 total timing depending on the cyl. head you are running. Make sure the engine is getting enough fuel so not to cause lean out. That should give you something to go on. The BBF is not prone to bearing problems as many have run as much as 9000 rpms with a cast crank and a passenger car block for 25 seconds at a time [truck pullers] so your jet boat application should be a piece of cake.

[victorfb]

FRAM?????????? Yikes!!!!!!!!!:jawdrop: i know what i would change first.

[llepd]

FRAM?????????? Yikes!!!!!!!!!:jawdrop: i know what i would change first.
will try oil filter first and installing mech oil gauge see what happens thanks for the ideas. Dale

[Glenn]

Should of replaced block when rebuilt. Heard of weard "very few" cracks on oil gallery. Manaflux cold not pic'm up. This is worst case. Im running ford 550hp creat eng with 150hp nit. High vol. pump 10 qt. oil pan. Pressure allways pegged on sw 80 psi gauge. Also made own thermastat adjustable bypass valve. Runs 160 crus. 180 @ idle.

[dmontzsta]

Time to visit with Paul @ High Flow Dynamics. :D

[lucky]

:D Time to visit with Paul @ High Flow Dynamics. :D
Got
chevy

[Sanger Jet]

FRAM?????????? Yikes!!!!!!!!!:jawdrop: i know what i would change first.
WIX 51515R:devil:

[Devilman]

WIX 51515R:devil:
Whats the "R"? We run Wix filters on all our equipment, so umm, I do too. :D 51515 on all my Fords but haven't seen one with the the R added......

[79centurion]

R is racing. Wix makes a racing filter
Dan

[TahitiTiger]

FL 1 HP (race)or FL 1 A (standard)
http://ec1.images-amazon.com/images/I/21VwzgQxJUL.jpg

[Warp Speed]

:D
Got
chevy
:D :D :D :D :D :D :D

[058]

:D
Got
chevyThats going backwards :D

[IndianaTahiti]

you guys really see that much of a difference in pressure with different oil filters? I thought that even if it clogged it would go to bypass? I also have a BBF.

[Warp Speed]

I also have a BBF.
I'm Sorry!!!! :D

[Warp Speed]

OK guy's, I really am sorry!!!
I just couldn't resist!!!:crossx:
Seriously, Wix make about the best racing filters out there (air and oil) bar none. Unfortunately, it doesn't sound like an oil filter problem (and no, it's not because it's a Ford either!!):D

[llepd]

OK guy's, I really am sorry!!!
I just couldn't resist!!!:crossx:
Seriously, Wix make about the best racing filters out there (air and oil) bar none. Unfortunately, it doesn't sound like an oil filter problem (and no, it's not because it's a Ford either!!):D
Think problem solved. found broken pushrod & lifter popped out of bore. push rod guides wore pushrod and end broke off. have new pushrods coming and motocraft filter. have to adjust pushrod quides and give it a try. Thanks for the info Dale.

[suckerpunch]

Bla Bla Bla. First and foremost, it sounds to me you have over looked the dimention between the pick-up tube and the pan! We have also seen cavitation from pin holes in the pick-up tubes. sometimes people forget to install the correct plugs on the lifter galleys, depending on your block. There are no oiling problems with a Big Ford, it is usually something simply overlooked. Joe:idea: :idea:

[minnesota_duane]

Think problem solved. found broken pushrod & lifter popped out of bore. push rod guides wore pushrod and end broke off. have new pushrods coming and motocraft filter. have to adjust pushrod quides and give it a try. Thanks for the info Dale.
I have Comp Cam guide plates on my 429 I had to bend the hell out of them to keep them off the pushrods. Look hard at all of them to see if they are clearing.
I hope you ordered hardend push rods? They should never wear, if yours did I would change them all out.

[llepd]

I have Comp Cam guide plates on my 429 I had to bend the hell out of them to keep them off the pushrods. Look hard at all of them to see if they are clearing.
I hope you ordered hardend push rods? They should never wear, if yours did I would change them all out.
got harden pushrods installed them opened up guides, but wondering how much clearance there should be on them. shouldn't they be close to function properly.

[VAMI]

I v seen too many fram filters suck the centers up . run the wix or moroso.The micron is less lets more oil pass .Is the block not wanting to drian back fast enough ? HV pumps usally pump too much oil and it all sits in the heads.My ol press goes down after a hard pass just due to oil slosh, it has all the baffles try scraper and it still runs forward.I did have a customer ,had the same issue he had a pinhole in the block where the galley was drilled too far underneth the pump where it makes a 90 turn it broke through in that pocket.