Re: Windage Tray Missing
[Re: Sponge]
#1481824
08/08/13 10:42 PM
08/08/13 10:42 PM
|
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
iirc the old MP spec was you gain ~15 horse at higher rpm with it.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Windage Tray Missing
[Re: Sponge]
#1481825
08/09/13 01:06 AM
08/09/13 01:06 AM
|
Joined: Jan 2003
Posts: 1,255
Columbus, GA
Michael Ecks
pro stock
|
pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
|
5.2 or 5.9 ???
I've heard the 15hp gain claim on 318(5.2) and 340 engines.
Pretty sure one of my books (Larry Shepard maybe) said the tray was too close to the rotating assembly on 360(5.9) models and ended up increasing windage instead of reducing the effect.
When I have my 360 apart I plan on calculating the difference between the crank strokes and adding spacers if the oil pan allows.
"The happiness of your life depends upon the quality of
your thoughts" ~ Roman Emperor Marcus Aurelius
|
|
|
Re: Windage Tray Missing
[Re: Sponge]
#1481829
08/09/13 02:22 AM
08/09/13 02:22 AM
|
Joined: Jan 2003
Posts: 1,255
Columbus, GA
Michael Ecks
pro stock
|
pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
|
Quote:
Its a 5.9 390HP Crate engine. It came without a windage tray and a low volume oil pump. I'm having low oil pressure issues at idle when warm.
Absence or presence of a windage tray doesn't affect oil pressure. Maybe at high RPM with a high volume oil pump, and low oil levels, it might slow oil return to the pickup, but definitely not at idle. And almost every builder recommends standard (ie "low") pressure oil pumps in small blocks, even very high horse builds. Like Cab Burge said above.
There is always a chance the oil pump that was installed in it was just bad from the beginning. Such as loose internal clearances in the pump from the factory. Depending on how hard it is to drop the pan, I would try replacing it with a new standard volume pump first.
If that doesn't help it there is more than likely is a problem elsewhere in the engine. Missing or improperly installed plug in the block between the oil filter inlet/outlet passages, lifters not covering the oil galley, etc etc. better to find out where it is escaping from. A high volume pump may help if there is something like worn or loose bearing clearances more commonly seen in high mileage motors, but that is about all they are good for IMHO.
"The happiness of your life depends upon the quality of
your thoughts" ~ Roman Emperor Marcus Aurelius
|
|
|
Re: Windage Tray Missing
[Re: JohnRR]
#1481835
08/09/13 06:28 PM
08/09/13 06:28 PM
|
Joined: Jan 2003
Posts: 1,255
Columbus, GA
Michael Ecks
pro stock
|
pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
|
well, you could go that route. To my memory there is nothing special about the crate engine bottom end. If it is mopar I don't think they are blueprinted or anything. You might consider looking for a junkyard engine with good bore wear and just swapping over the other parts from the crate. I picked up one with a spun bearing for 100$ off craigslist. Even at 140K miles you could still see the factory crosshatch on the piston bores. Might be a cheaper option.
"The happiness of your life depends upon the quality of
your thoughts" ~ Roman Emperor Marcus Aurelius
|
|
|
Re: Windage Tray Missing
[Re: Sponge]
#1481837
08/10/13 11:59 AM
08/10/13 11:59 AM
|
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
|
Quote:
I'm leaning towards fixing the block I have. Fix the lifter bores and hone the cylinder walls (since its apart). I was thinking of finding a different block but by the time I pay for a core have the cylinders bored twenty over and line bore the caps I don't think it would be worth it. Stick with the EVIL I know!
Have them check the deck height , my crate hemi was tall by .010
|
|
|
|
|
