WELCOME TO RIVER DAVES PLACE

Obnoxious Racing Engines and Racetech Pistons

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6710.jpg IMG_6709.jpg

Here's a couple shots from last night.


Oh and we weighed the block. I was way off. It was 160lbs with the main caps in it. I figured since we were carrying it around by hand it was way lighter. [emoji51]
 

obnoxious001

Engine building character
Joined
Dec 28, 2007
Messages
6,467
Reaction score
3,816
Looking good Barry! Can't wait to see this beast all together! :thumbsup

Paul, text me an address to send your extra piston to... You know how it goes, if you have it you will (Hopefully) never need it!

Yeah, hopefully the boat will have a safe tune and the engine will stay together for a period of time. Years ago when I built engines for GT Performance Gary always got two extra pistons with each set. He sure had a bunch of them stashed above the office.
 

stokerwhore

aka bordsmnj
Joined
Dec 12, 2007
Messages
4,191
Reaction score
4,330
I'm curious as to why one would need to keep the negative block pressure and not just vent it. Was the negative pressure desired for use with blowers? I thought the main advantage of negative pressure was keep the pressure from changing rapidly. not sure it even matters wether pressure is neg. or pos. just that it isn't going through big changes (losing power or blowing oil out of the block) constantly. disclaimer: I'm not offering knowledge here at all, just stating guesses and questions out of curiousity.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
I'm curious as to why one would need to keep the negative block pressure and not just vent it. Was the negative pressure desired for use with blowers? I thought the main advantage of negative pressure was keep the pressure from changing rapidly. not sure it even matters wether pressure is neg. or pos. just that it isn't going through big changes (losing power or blowing oil out of the block) constantly. disclaimer: I'm not offering knowledge here at all, just stating guesses and questions out of curiousity.

It's just a characteristic of the dry sump. I'm not the most knowledgeable on that subject on how and why it works but I'll give you my idea and maybe someone can elaborate. In a wet sump all your oil is pumped through the motor and falls to the pan. From what I understand the crank is basically turning a mass of oil with it at some point. Dry sump is cleaner and more controlled way to oil everything. In this motor the top end is sealed from the bottom end. There's suction on top and on the bottom so you don't have all that oil falling to pan and on the crank as it's spinning. That's supposed to create horse power, less oil being slung around.
 

wsuwrhr

The Masheenest
Joined
Dec 20, 2007
Messages
35,634
Reaction score
23,838
It's just a characteristic of the dry sump. I'm not the most knowledgeable on that subject on how and why it works but I'll give you my idea and maybe someone can elaborate. In a wet sump all your oil is pumped through the motor and falls to the pan. From what I understand the crank is basically turning a mass of oil with it at some point. Dry sump is cleaner and more controlled way to oil everything. In this motor the top end is sealed from the bottom end. There's suction on top and on the bottom so you don't have all that oil falling to pan and on the crank as it's spinning. That's supposed to create horse power, less oil being slung around.

That about does it.
 

LargeOrangeFont

We aren't happy until you aren't happy
Joined
Sep 4, 2015
Messages
49,690
Reaction score
76,151
I'm curious as to why one would need to keep the negative block pressure and not just vent it. Was the negative pressure desired for use with blowers? I thought the main advantage of negative pressure was keep the pressure from changing rapidly. not sure it even matters wether pressure is neg. or pos. just that it isn't going through big changes (losing power or blowing oil out of the block) constantly. disclaimer: I'm not offering knowledge here at all, just stating guesses and questions out of curiousity.

Try sucking through a straw with a hole in it above your drink. That is why a dry sump motor needs to be sealed. That is an extremely simplified way to look at it.
 

stokerwhore

aka bordsmnj
Joined
Dec 12, 2007
Messages
4,191
Reaction score
4,330
that's called windage and I believe we're talking about two different subjects although you are correct (to my knowledge) in what you say about the benefit of dry sump. My thought was maybe the negative pressure was to go with a blown application were you almost always have some blowby and there for positive pressure. just curious.
 

obnoxious001

Engine building character
Joined
Dec 28, 2007
Messages
6,467
Reaction score
3,816
OK,, took a couple more days than I had hoped for, but the block is back in my hands and should have proper main bearing clearance now. I need to mock it up with bearings and measure to satisfy myself that it's correct, cut the piston rings, then get to work putting it together.
 

Enen

Well-Known Member
Joined
Aug 9, 2008
Messages
6,039
Reaction score
4,146
You guy's are slacking on the updates... C'mon now. :D
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
Lol. Barry is past a short a block. I've just been swamped and trying to do the family and vacation stuff at that same time. Thank God the 4th is over. Maybe everything can get back to normal. Let me post some pics. [emoji106]
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6975.jpg IMG_6976.jpg IMG_6977.jpg IMG_6978.jpg

Got the block back from machining a second time. Barry triple checks clearances and then the block is ready to be scrubbed. It's already been through a machine to clean it, but he hand washes it a couple more times when he's ready for assembly just make sure.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6979.jpg

Clean block ready for assembly.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6981.jpg IMG_6982.jpg

Checking fit for end play on the crank. A lot of the tools are magnetic and need fixtures made since you can't just stick anything to the block.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6984.jpg IMG_6985.jpg IMG_6986.jpg IMG_6987.jpg IMG_6988.jpg

Here he's cutting the ring gap. Numbering all the rings so he knows which cylinder they go in. Everything is laid out and ready for assembly in their perspective positions. Thanks again RaceTec for the quick turn around. [emoji106]
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6989.jpg IMG_6990.jpg IMG_6991.jpg

Pistons in. Here's another fixture to degree the cam. It's 1" taller than a standard deck. Barry had to mock something up to fit down the lifter bore as well as bolt plates on the top of the deck to make his tools work.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_6992.jpg IMG_6993.jpg

Checking valve springs. Dart Big Chief Heads should be ready to bolt on.
 

wsuwrhr

The Masheenest
Joined
Dec 20, 2007
Messages
35,634
Reaction score
23,838
Looking at the crank area of the block I keep having to tell my brain it isn't a Mopar.

Brian
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
Looking at the crank area of the block I keep having to tell my brain it isn't a Mopar.

Brian

Oldsmobile! Lol. Why it's called an Olds I have no clue. Maybe someone can elaborate. Pontiac heads, Chevy internals. It does use a Mopar pan gasket. It's pretty much got a little of everything except Ford thank God.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
Making one change in the plumbing. The dry sump has an Oberg filter already. Adding the big style filter to the system. There isn't really a higher flow filter system then the big HP6 style filters. [emoji106] IMG_6996.jpg
 

wsuwrhr

The Masheenest
Joined
Dec 20, 2007
Messages
35,634
Reaction score
23,838
Making one change in the plumbing. The dry sump has an Oberg filter already. Adding the big style filter to the system. There isn't really a higher flow filter system then the big HP6 style filters. [emoji106]

What is happening to the Oberg filter?
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
What is happening to the Oberg filter?

The oberg is before the dry sump tank on the return and has a 16an line in and out. The other filter is after the dry sump tank before it enters the block. Dash 12. Just want to be covered both ways.
 

wsuwrhr

The Masheenest
Joined
Dec 20, 2007
Messages
35,634
Reaction score
23,838
The oberg is before the dry sump tank on the return and has a 16an line in and out. The other filter is after the dry sump tank before it enters the block. Dash 12. Just want to be covered both ways.

Oh ok. so not taking it out, just adding a second filter. Got it.
 

obnoxious001

Engine building character
Joined
Dec 28, 2007
Messages
6,467
Reaction score
3,816
Looking at the crank area of the block I keep having to tell my brain it isn't a Mopar.

Brian

It's a KB block, and it does take a Mopar pan gasket.

I believe the "Oldsmobile" part comes from pro stock racing, when they started using the symetrical port Pontiac and Olds heads, and then of course Dart and Brodix made their versions. This one has 18 degree Dart "Big Chief" heads.

The new oil filter is to replace one that was designed for a hydraulic fluid filter, and we kept scratching our heads and figured the newer HP 6 style large capacity filter would be a safer choice, after seeing what the water in the oil did to the filter media in the old filter.
 

milkmoney

Well-Known Member
Joined
Apr 30, 2008
Messages
31,478
Reaction score
20,583
Looks bitchin. Can't wait to see and hear it run [emoji106] [emoji106] [emoji202]
 

mjc

Retired Neighbor
Joined
Jan 3, 2008
Messages
11,769
Reaction score
8,772
Those started as GM DRCE engines I think. Drag race competition engine
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
IMG_7071.jpg

Dart Big Chief 18 degree heads. Jessel shaft rockers. Solid roller cam. Time for some valve adjustment. Barry is going to give me some lessons on adjusting them and then we will have a long block. That's about an 11 thousand dollar set of heads not including all the hardware.
 

wsuwrhr

The Masheenest
Joined
Dec 20, 2007
Messages
35,634
Reaction score
23,838
Dart Big Chief 18 degree heads. Jessel shaft rockers. Solid roller cam. Time for some valve adjustment. Barry is going to give me some lessons on adjusting them and then we will have a long block. That's about an 11 thousand dollar set of heads not including all the hardware.

Jesel and T&D have always been my favorites.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
I thought you are required to micro-polish all aluminum in a Schiada trailer queen:D

I thought about it. It was either all polished or all raw. For some reason I liked the look how it was. It's all business. Also I just didn't want to ship everything and risk the time or anything getting damaged. That block and heads are too much money to let them out of my control if that made sense. I would have had a heart attack if something was damaged in shipping.
 

RaceTec

Well-Known Member
Joined
Mar 10, 2011
Messages
2,229
Reaction score
2,393
You guys are correct with the Pontiac and Oldsmobile connection on these parts. They all started as pro-stock drag parts with different GM based sponsors. Larry Morgan, Warren Johnson, etc...
Everything is looking great, I actually like the raw finish too, more business than show!
 

stokerwhore

aka bordsmnj
Joined
Dec 12, 2007
Messages
4,191
Reaction score
4,330
that thing is looking sexy already. I've always like the sound of those gear driven cams too :thumbsup
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
You guys are correct with the Pontiac and Oldsmobile connection on these parts. They all started as pro-stock drag parts with different GM based sponsors. Larry Morgan, Warren Johnson, etc...
Everything is looking great, I actually like the raw finish too, more business than show!

The pistons are polished. [emoji106] lol
 

obnoxious001

Engine building character
Joined
Dec 28, 2007
Messages
6,467
Reaction score
3,816
Paul seems to have passed his Jesel shaft rocker valve adjusting class this evening.

We need some Big Chief valve cover gaskets, and to get the intake and oil pan bolted on, and it will be ready for accessories. I don't know what other photos may not have been posted yet, but it should be heading over to get dropped back in the boat in the next couple of days.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
Joined
Dec 19, 2007
Messages
32,731
Reaction score
28,070
Not putting it on a Dyno?

We were talking about it. I only changed the compression and not by a bunch. If I need to we can put an air/fuel meter in the exhaust.
 

RaceTec

Well-Known Member
Joined
Mar 10, 2011
Messages
2,229
Reaction score
2,393
The pistons are polished. [emoji106] lol
They look polished but that is just good surface finish! :thumbsup

I didn't ship your spares because I am hoping to head out to Parker next weekend and meet up with either you or Barry at some point... :skull
 

renodaytona

Well-Known Member
Joined
Aug 17, 2010
Messages
4,407
Reaction score
2,631
Good speed and feed rate = awesome surface finishes. :cool

Awesome build, can't wait to see pics and video of it back in the boat running. :thumbsup
 

Uncle Dave

Well-Known Member
Joined
Sep 7, 2008
Messages
9,826
Reaction score
10,929
Pretty awesome outdrive1 looks like an absolute ball.

Barry's been building great mills for a long time and Racetech is the stuff.

Super cool man I wanna ride someday.

UD
 
Top