Why Pre mix? should everyone be doing it?
#2
pre mix is for people who have a broken or have removed their OMP (oil metering pump) which dribbles engine oil into the carb to lubricate the apex seals. Or its for people who are paranoid like i am. that and a proper smokeless ashless 2 stroke oil will keep your engine cleaner than having just motor oil pumped into the carb.
#3
Full Member
Join Date: Mar 2009
Location: Jericho, Vermont
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
#4
Yeah, shutup kid.
If you have not measured the flow coming out of the lines from your OMP you should be premixing. I wouldn't trust a 25+ year old pump and plastic lines to keep the seals lubed without testing it first.
Trending Topics
#8
79 w 13B4port
iTrader: (5)
You can download the FSM free off the forum. Sgt. Fox has them on his website.
It is in all of them.
Anyway you can use little plastic mixing cups used for measuring and mixing epoxies and such. You can usually find them @ walmart or parts stores.
Be very careful with the plastic lines , they will be old and brittle, the little clips that secure them can be fussy.
It is in all of them.
Anyway you can use little plastic mixing cups used for measuring and mixing epoxies and such. You can usually find them @ walmart or parts stores.
Be very careful with the plastic lines , they will be old and brittle, the little clips that secure them can be fussy.
#10
Sharp Claws
iTrader: (30)
considering the mechanical OMPs all produce the same volume, in this case i would say "good enuf".
as for premixing. yes it has other benefits and drawbacks, but there should have been some info in the other threads you saw that gave those pros and cons. this horse has been beaten to death, resurrected 50 times then beaten repeatedly again.
the OMP system works ok but adds to carbon buildup inside the engine and is rather minimal for the internal lubrication for abuse. premixing takes up the slack if you drive the car hard as you can increase the amount of lubrication inside the engine. next benefit is that 2 stroke oil actually helps to inhibit carbon buildup rather than promote it as the OMP system does. drawback being that you have to measure and add oil to the gas tank prior to filling up.
as for premixing. yes it has other benefits and drawbacks, but there should have been some info in the other threads you saw that gave those pros and cons. this horse has been beaten to death, resurrected 50 times then beaten repeatedly again.
the OMP system works ok but adds to carbon buildup inside the engine and is rather minimal for the internal lubrication for abuse. premixing takes up the slack if you drive the car hard as you can increase the amount of lubrication inside the engine. next benefit is that 2 stroke oil actually helps to inhibit carbon buildup rather than promote it as the OMP system does. drawback being that you have to measure and add oil to the gas tank prior to filling up.
Last edited by RotaryEvolution; 11-22-11 at 11:16 AM.
#11
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,841
Received 2,604 Likes
on
1,847 Posts
although it IS really hard to measure 3.5cc's.... that's like 4 drops
#12
Environmentally-Hostile
Remember you can also convert the OMP to feed from an auxiliary tank, which you can keep filled with 2 stroke oil. IMO, it's the best of both worlds. Not having to bring a chemistry set with you to the gas station, and not having to worry about dirty engine oil in your combustion chamber.
http://jhbperformance.com/products.php#oil_system
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
That is probably what I'm going to do when I finally rebuild my OMP
http://jhbperformance.com/products.php#oil_system
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
That is probably what I'm going to do when I finally rebuild my OMP
#13
I can has a Hemi? Yes...
iTrader: (2)
Remember you can also convert the OMP to feed from an auxiliary tank, which you can keep filled with 2 stroke oil. IMO, it's the best of both worlds. Not having to bring a chemistry set with you to the gas station, and not having to worry about dirty engine oil in your combustion chamber.
http://jhbperformance.com/products.php#oil_system
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
That is probably what I'm going to do when I finally rebuild my OMP
http://jhbperformance.com/products.php#oil_system
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
That is probably what I'm going to do when I finally rebuild my OMP
I always thought my OMP wasn't enough, so I always ran a little
Premix in as well. I hated doing that. This might be the better solution.
Thread
Thread Starter
Forum
Replies
Last Post
BLUE TII
Single Turbo RX-7's
10
09-26-15 10:12 PM