Oxyboxer build thread
- Piledriver
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Re: Oxyboxer build thread
12 qt is pretty std.
You don't actually have to fill it 100%..
One of the advantages of dry sump is the oil has time to deareate, but in order to HAVE that time, it can't be making another trip through the engine every few seconds, so more volume increases the cycle time.
Don't forget to plumb the pressure relief return to the DS tank, most of your oil gets bypassed to the sump there at any reasonable RPM. This saves pumping it back out endlessly to no effect.
This also allows it more cycles through the tanks baffles to deareate, as well as more cycles through the cooler before hitting the bearings
You don't actually have to fill it 100%..
One of the advantages of dry sump is the oil has time to deareate, but in order to HAVE that time, it can't be making another trip through the engine every few seconds, so more volume increases the cycle time.
Don't forget to plumb the pressure relief return to the DS tank, most of your oil gets bypassed to the sump there at any reasonable RPM. This saves pumping it back out endlessly to no effect.
This also allows it more cycles through the tanks baffles to deareate, as well as more cycles through the cooler before hitting the bearings
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
- grelland
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Re: Oxyboxer build thread
Still waiting for crucial parts, but meanwhile, I located one on these (not that shiny loooking though... ) that I will attempt to locate inside the rear fender behind the wheel.
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Re: Oxyboxer build thread
cool i wouldnt mind one too! was it costly? is that the filler, breather, then feed, and at the bottom two outputs? and a red drain?
whats the red bit at the top?
whats the red bit at the top?
- grelland
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Re: Oxyboxer build thread
I dont really know what all the inputs and outputs are for, but I will have a closer look once I pick it up. I paid about $200 for it.
- grelland
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Re: Oxyboxer build thread
finally some progress 
I received some parts the other day, and I was quite excited to see how especially the Los Panchitos heads looked, and I took a couple of pictures.
First a look at the combustion chamber: I don't have the experience to tell whether the shape of the chamber is any good, but from what I can see, are there some quite sharp edges both in the transition between the squish area and the chamber itself, and there is also a ridge around the entire circumference of the chamber. My plan is to have the ridge machined down so that the squish area is flat, then use my dremel to round off the sharp edge around the chamber.
Next shot is down the intake channel. Again, I am i no position to judge the shape and size of the port, and by feeling my finger around, it really feels nice and smooth. There are a few areas where it seems the cnc did not cut into the material, so my plan is to lightly go over this area with a flap-disk on my dremel to ensure that all transitions are as smooth as possible.
I will also matchport my intakes to fit the openings in the head.
Another shot, this time down the exhaust port: Same comment there on the oxydized areas.
I will also remove the valves to check the valve/seat job, and also ensure that all is nice and clean prior to final assembly.
All in all, I think this looks good, and I do really look forward to seeing how this engine will perform

I received some parts the other day, and I was quite excited to see how especially the Los Panchitos heads looked, and I took a couple of pictures.
First a look at the combustion chamber: I don't have the experience to tell whether the shape of the chamber is any good, but from what I can see, are there some quite sharp edges both in the transition between the squish area and the chamber itself, and there is also a ridge around the entire circumference of the chamber. My plan is to have the ridge machined down so that the squish area is flat, then use my dremel to round off the sharp edge around the chamber.
Next shot is down the intake channel. Again, I am i no position to judge the shape and size of the port, and by feeling my finger around, it really feels nice and smooth. There are a few areas where it seems the cnc did not cut into the material, so my plan is to lightly go over this area with a flap-disk on my dremel to ensure that all transitions are as smooth as possible.
I will also matchport my intakes to fit the openings in the head.
Another shot, this time down the exhaust port: Same comment there on the oxydized areas.
I will also remove the valves to check the valve/seat job, and also ensure that all is nice and clean prior to final assembly.
All in all, I think this looks good, and I do really look forward to seeing how this engine will perform
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- grelland
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Re: Oxyboxer build thread
I also ordered a CB dry sump pump, and I trial fitted it in order to check for potential interference issues between the lines to/from the sandwich plate and the line going into the pump:
Here is another shot where one of the challenges of using a dry sump pump is evident: I will first try to see if I will be able to shim the pulley far enough out to clear the pump cover. But in order to do that, I need to assemble the entire shroud/generator assembly to verify that I will be able to align the pulleys properly. Alternativelly I will need to use a smaller sized serpentine pulley kit.
Quite busy... I will have to trial fit the heads and exhaust to further check this...Here is another shot where one of the challenges of using a dry sump pump is evident: I will first try to see if I will be able to shim the pulley far enough out to clear the pump cover. But in order to do that, I need to assemble the entire shroud/generator assembly to verify that I will be able to align the pulleys properly. Alternativelly I will need to use a smaller sized serpentine pulley kit.
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Re: Oxyboxer build thread
You have some cleaning up to do here. I am glad you shared this with us all because what i am seeing here doesn't impress me.grelland wrote:finally some progress
I received some parts the other day, and I was quite excited to see how especially the Los Panchitos heads looked, and I took a couple of pictures.
First a look at the combustion chamber: I don't have the experience to tell whether the shape of the chamber is any good, but from what I can see, are there some quite sharp edges both in the transition between the squish area and the chamber itself, and there is also a ridge around the entire circumference of the chamber. My plan is to have the ridge machined down so that the squish area is flat, then use my dremel to round off the sharp edge around the chamber.
Next shot is down the intake channel. Again, I am i no position to judge the shape and size of the port, and by feeling my finger around, it really feels nice and smooth. There are a few areas where it seems the cnc did not cut into the material, so my plan is to lightly go over this area with a flap-disk on my dremel to ensure that all transitions are as smooth as possible.
I will also matchport my intakes to fit the openings in the head.
Another shot, this time down the exhaust port: Same comment there on the oxydized areas.
I will also remove the valves to check the valve/seat job, and also ensure that all is nice and clean prior to final assembly.
All in all, I think this looks good, and I do really look forward to seeing how this engine will perform
- grelland
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Re: Oxyboxer build thread
could you be more specific about what I need to clean up, or am I on the right track with the things I mentioned?
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Re: Oxyboxer build thread
Well you are on the right track those sharp edges need to go.
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Re: Oxyboxer build thread
Looks great!
'12 VW Jetta TDI sedan- MPG queen
'76 Ferrari Dino 308 GT4- Garage Queen (turbo boxer swap)
'73 Datsun 240Z- Autox'er
-Jay Gilling
'76 Ferrari Dino 308 GT4- Garage Queen (turbo boxer swap)
'73 Datsun 240Z- Autox'er
-Jay Gilling
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Re: Oxyboxer build thread
Maybe use a 45 degree fitting out the pump?
On those heads, how does it feel? Do the transitions between machines and raw look worse then they feel? A fluff up would harm I doubt!
What's your current thoughts on head studs now you have them?
Merry Christmas!
On those heads, how does it feel? Do the transitions between machines and raw look worse then they feel? A fluff up would harm I doubt!
What's your current thoughts on head studs now you have them?
Merry Christmas!
- grelland
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Re: Oxyboxer build thread
It might be that I place the dry sump tank in the right hand side fender, so then I will have a 180deg fitting on that side, so maybe it all works out well.
Yes the transitions are nice and smooth feeling with the finger, so I have just used a mini flap-drum on my dremel, and cleaned up.
Another thing I looked at today is the bearing closest to the flywheel.
Normally, on a T1 engine, that gearing has a double thrust surface, so that the end float can be shimmed correctly, but this is how this bearing looks in my kit: From what I can see, is the case machined so that a thrust type bearing can be used, but as I said there was no such bearing in my KS kit...
Do I have the wrong bearing kit?
Yes the transitions are nice and smooth feeling with the finger, so I have just used a mini flap-drum on my dremel, and cleaned up.
Another thing I looked at today is the bearing closest to the flywheel.
Normally, on a T1 engine, that gearing has a double thrust surface, so that the end float can be shimmed correctly, but this is how this bearing looks in my kit: From what I can see, is the case machined so that a thrust type bearing can be used, but as I said there was no such bearing in my KS kit...
Do I have the wrong bearing kit?
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- fastback
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Re: Oxyboxer build thread
didn't i send you the 2 thrust plates for the bearing 
It's all in the Haynes manual

It's all in the Haynes manual
Last edited by fastback on Sun Dec 30, 2012 11:12 am, edited 1 time in total.