Skydog
TY 4 Stroke God
treewhacker 
NICE!!!
Skydog
NICE!!!
Skydog
Skydog
TY 4 Stroke God
95 jet is this a Bender made jet or????????? I dont have a jet in the feed line i think i should put on in.
Thank you Skydog
Thank you Skydog
Tuco
Extreme
The one in mine is a mikuni small round just like the main jets in the carbs. It fits right in the rubber hose.
Skydog
TY 4 Stroke God
Now i was told a 90 round jet?
Tuco, what size is your Mikuni? Like a 135?
Thank you Skydog
Tuco, what size is your Mikuni? Like a 135?
Thank you Skydog
treewhacker
Expert
You can use a round or hex jet....Doesn't matter. The difference in size is very minute. Make sure you get the clamp ON the jet and tighten securely so no oil flows around the jet. The reason for the jet is to reduce the oil VOLUME. The RX1 pumps around 65# pressure at 4000 RPM and above.....Garret reccomends only 4# to 6# max. at the inlet. Also, I did some research and found that the main reason oil gets sucked through the bearings is this:
OIL Gets Into Exhaust Side Of Turbo (Primary):
Lets say you're running 10# boost at WOT. Now you release the throttle and the carb slides slam shut. All the pressure in the charge tube now has no place to go. Like electricity, the air pressure seeks the path of least resistence....Which is right through the bearing cage. This will push oil into the exhaust side of the turbo and out your exhaust.
Oil Gets Into Charge Tube (Secondary):
When your engine is running, you have up to 65# oil pressure at the engine side of the 90 Jet in the tubo oil line. If you shut down the engine and the oil return pump at the same time, the oil pressure in the oil line before the 90 will slowly bleed to the turbo, filling the oil cavity in the turbo bearing housing, untill the pressure is equalized on both sides of the 90 jet. The turbo cannot get rid of the oil because the oil return pump is off and oil cannot flow through the pump freely, therefore it is a plug in the return line to the oil reservoir. Again, the oil takes the path of least resistence.....Right into the charge side of the turbo. When you start the engine this oil gets sucked right into your carbs................
Cure
Wire your oil pump to run with engine off / Key On. When you shut the engine off, turn the key back on for a couple of seconds to suck the oil out of the turbo, then shut the key off.
I'm going to design a delay relay for the oil pump so it shuts off about 6 seconds after you turn the engine off.
The reason I posted this is because I blew out 2 quarts of oil in just a morning ride one day, covering the sled behind me in oil. I haven't had those problems at all now that I have turned the return line straight down, put in the 90 jet, and run the oil pump a couple of seconds after shutting down.
Sorry for the long post.....I hope this gives some of you with questions a better understanding of the oil system on the Bender Turbo. When you get these little things correct, I'm sure you'll enjoy the Arm Stretching power and reliability this Bender Kit is capable of.
OIL Gets Into Exhaust Side Of Turbo (Primary):
Lets say you're running 10# boost at WOT. Now you release the throttle and the carb slides slam shut. All the pressure in the charge tube now has no place to go. Like electricity, the air pressure seeks the path of least resistence....Which is right through the bearing cage. This will push oil into the exhaust side of the turbo and out your exhaust.
Oil Gets Into Charge Tube (Secondary):
When your engine is running, you have up to 65# oil pressure at the engine side of the 90 Jet in the tubo oil line. If you shut down the engine and the oil return pump at the same time, the oil pressure in the oil line before the 90 will slowly bleed to the turbo, filling the oil cavity in the turbo bearing housing, untill the pressure is equalized on both sides of the 90 jet. The turbo cannot get rid of the oil because the oil return pump is off and oil cannot flow through the pump freely, therefore it is a plug in the return line to the oil reservoir. Again, the oil takes the path of least resistence.....Right into the charge side of the turbo. When you start the engine this oil gets sucked right into your carbs................
Cure
Wire your oil pump to run with engine off / Key On. When you shut the engine off, turn the key back on for a couple of seconds to suck the oil out of the turbo, then shut the key off.
I'm going to design a delay relay for the oil pump so it shuts off about 6 seconds after you turn the engine off.
The reason I posted this is because I blew out 2 quarts of oil in just a morning ride one day, covering the sled behind me in oil. I haven't had those problems at all now that I have turned the return line straight down, put in the 90 jet, and run the oil pump a couple of seconds after shutting down.
Sorry for the long post.....I hope this gives some of you with questions a better understanding of the oil system on the Bender Turbo. When you get these little things correct, I'm sure you'll enjoy the Arm Stretching power and reliability this Bender Kit is capable of.
Skydog
TY 4 Stroke God
Thank you !!! Where is a good place to get power for key on? For Fuel pump and oil pump realy?
Thank you
Thank you
Buckeye
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So how does this apply to those with oil supplied from the engine system?
Doesn't affect them - you have a sump reservoir that is vented to atmosphere. (MC and BPE are done this way).
treewhacker
Expert
Bender has done away with the rear mounted oil tank. What I posted is referring to the engine supplied oil, it comes from an adapter under the oil filter. Initially the oil pump was used as a PRESSURE pump, and oil was gravity fed back to the rear mounted reservoir. Now it is a vacme pump, sucking the oil from the oil return of the turbo and back to the stock reservoir on the RX1.Buckeye said:
treewhacker
Expert
I'm working on pics for installing the oil relay delay to shut the pump off after 10 seconds. I hope to have it up soon. It's a simple 10 minute install. Thanks
Skydog
TY 4 Stroke God
Sweet!
ttt
I already have the jet, but I think I found my problem. The power is feed of the relay on the fuel pump and the relay looked to be not all the way in.
I just need to run it and see if that is my problem.
I already have the jet, but I think I found my problem. The power is feed of the relay on the fuel pump and the relay looked to be not all the way in.
I just need to run it and see if that is my problem.
Blue shadow
TY 4 Stroke Guru
On the cpr gt 25 54 r Jeff said to put a 70 to 85 pilot jet in the line to cure the problem.It did on mine ,I put the 70 in and all is ok.
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