8 valve Oil gallery question (Photo included)

[Guest]

Hello I am wondering if anyone has experience with the internal workings of the 8 valve engine. As you can see I have labeled the ports under the oil pressure sensor for identification purposes.
Blue-Oil Feed from pump
Yellow-Oil return to crankcase (gearbox?)
Red-Oil return to transverse oil Gallery*
Orange-Transverse Oil Gallery*

What I need to know is if the single source of oil for the transverse gallery (which oils the cams) is the orifice I have circled in red? Or do the cams also get fed from somewhere else? many of the oil coolers I have seen dump the cooled oil into the crankcase (gearbox) return that is circled in yellow therefore allowing some of the oil to flow around the adapter's oil pickup and into the Red port leading to the transverse oil gallery. If the cooled oil was dumped onto the clutch basket instead would this cause the Transverse gallery to be starved?
Thanks-Rob

[Nessism]

The return oil dumps back into the distribution cavity , not directly to the transmission. Once in the cavity it will split and go to both the transfer galley as you reference, and the transmission.

Do NOT dump the oil into the clutch area or a bunch of parts in the engine won't get proper oil flow.

[ashdricky]

Do NOT dump the oil into the clutch area or a bunch of parts in the engine won't get proper oil flow.

What if I dumped the cool oil into the transverse gallery via the 14mm orifice right above the ignition cover?

[1980GS1000E]

I would think that would effectively cut the oil cooler out of the circuit. Equal oil pressure would be on both sides.

[ashdricky]

possibly, but the pressurized oil from the pump is routed directly into the oil cooler line via a brass pickup, then oil would enter the transverse gallery from there feed the cams and other areas no?

[Nessism]

What if I dumped the cool oil into the transverse gallery via the 14mm orifice right above the ignition cover?

How would the transmission get oil?

[ashdricky]

the oil would flow around both sides of the brass oil pickup back to the rear port that leads to the trans

[kochic]

I have a gs1000 8v suzuki oem manual and the flow diagram is there.
i,m not very good with computer but i will try to find a way to put it in this thread.
Marc

[Nessism]

the oil would flow around both sides of the brass oil pickup back to the rear port that leads to the trans

Missed this response the other day...

The oil flow path to the transmission would be more convoluted if you dumped the flow into the transverse galley, but I think it would work.

[Steve]

I have a gs1000 8v suzuki oem manual and the flow diagram is there.
i,m not very good with computer but i will try to find a way to put it in this thread.
Marc

Here ya go, straight from the factory manual:




.

[1980GS1000E]

The entire area under the plastic oil filter switch is pressurized. Some coolers provide a kit which replaces this switch with one that has a take-off added for the lines. The trouble is oil starvation elsewhere. If there is less flow resistance through the cooler than the other oil pathways diverging from this area, then there will be a loss of oil flow everywhere else. A flow restrictor should be used in the take-off to prevent this.

[Nessism]

The entire area under the plastic oil filter switch is pressurized. Some coolers provide a kit which replaces this switch with one that has a take-off added for the lines. The trouble is oil starvation elsewhere. If there is less flow resistance through the cooler than the other oil pathways diverging from this area, then there will be a loss of oil flow everywhere else. A flow restrictor should be used in the take-off to prevent this.

??? Sorry, don't understand what you are trying to say.

The oil distribution cavity is pressurized with flow up though the feed port from the pump. Once the oil fills the cavity it splits and some goes to the transmission and some to the crank/top end.

A proper oil cooler adapter has a piece that fits down onto the oil feed port and diverts 100% of the oil flow from the pump away from the cavity, instead flowing into the oil cooler inlet tube. After the oil is cooled, the return flow dumps down into the oil distribution cavity where it goes on it's way either to the transmission or transverse galley.

[sedelen]

I thought this might be of interest. Here are two pic's of my aftermarket oil gallery cover and oil cooler that are on my '79 GS1000E.
Didn't realize just how big that gallery cover was until now when I took pic's of it. I must be used to the smaller stock one on my '82 GS1100E.
The oil cooler has the oil fiitings both mounted on top, this allows oil to stay in the tank and allows me to get a good reading on my oil level without second guessing.
I was going to return the bike to stock, as I really don't like fancy gizmos
on my bike, but a guy talked me out of it being I live in Florida and it does get really hot in the summer down here, so I kept it and haven't had any problems with or because of it.

[1980GS1000E]

??? Sorry, don't understand what you are trying to say.

The oil distribution cavity is pressurized with flow up though the feed port from the pump. Once the oil fills the cavity it splits and some goes to the transmission and some to the crank/top end.

A proper oil cooler adapter has a piece that fits down onto the oil feed port and diverts 100% of the oil flow from the pump away from the cavity, instead flowing into the oil cooler inlet tube. After the oil is cooled, the return flow dumps down into the oil distribution cavity where it goes on it's way either to the transmission or transverse galley. Without capturing all the oil flow and sending it to the cooler, you won't have any flow through that system at all.

You are correct. I have not installed a cooler on this type of bike, I have worked with coolers on others, and I appreciate the correction. Sedelen's picture is perfect. The OP needs this info. On my 900F and 900 Ninja, which have stock coolers, if memory serves correctly, there were dual oil pumps. one for the cooler and one for the engine.

[kochic]

Thanks Steve for the scheme, i tried to take a pic of it with no luck.
I have the same oil cooler adapter on my gs1000 bought it off ebay a few years back.
Just dont forget to put the round seal to have all the oil going to the cooler.
Marc