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Post by bennwedge on Mar 28, 2012 17:43:48 GMT -5
hi all not been on here in a while. ive been slowly building up scooter number 2 ( after my first was stolen and burnt out after 3 weeks of ownership) its an aprilia area 51 lc minarelli . ive fitted a 70cc kit and a dellorto phbn 17.5mm carb. got it fired up for the first time this evening. I have disconnected the oil pump and will be premixing the oil/petrol myself but am unsure what to do..............do i pour the oil into the fuel tank and let the petrol and oil mix itself or do i fill up a petrol can ,add the oil and give it a good shake then pour it into the tank? advice would be much appreciated thanks benn
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Post by reveeen on Mar 28, 2012 18:45:34 GMT -5
What I do is this:
I take a 2 gallon empty gas can, add 225ml ( 7.5oz) of oil, then I pump in 9 liters (2 imperial gallons) of gasoline giving me a 40:1 ratio. On a new engine I'm breaking in I mix it 32:1.
This is using a synthetic 2 cycle oil and ethanol free gasoline.
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Post by felliott on Mar 28, 2012 19:40:17 GMT -5
I agree with reveeen. I do it the same way, no engine problems yet.
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Post by Fox on Mar 28, 2012 22:16:32 GMT -5
Me too. I use a 2 gallon can and fill it to exactly 2 gallons on the pump and I mix in 8oz. I guess that's 32:1. I've been doing it like that for 3500 miles. I use Lucas semi-synthetic. Never had a fouled plug or any other issues. It's bone stock and the top end has never been apart. Should I cut back on the oil a little since it's broke in?
Don't mean to hijack this topic but I've been thinking maybe I should cut down on the oil.
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Post by stepthrutuner on Mar 29, 2012 0:10:38 GMT -5
Me too. I use a 2 gallon can and fill it to exactly 2 gallons on the pump and I mix in 8oz. I guess that's 32:1. I've been doing it like that for 3500 miles. I use Lucas semi-synthetic. Never had a fouled plug or any other issues. It's bone stock and the top end has never been apart. Should I cut back on the oil a little since it's broke in? Don't mean to hijack this topic but I've been thinking maybe I should cut down on the oil. I think you would do well at 40:1. I dropped mine to that a while back. It looked real good (clean) when I took it apart and I run mineral based oil. |
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Post by bennwedge on Mar 29, 2012 17:08:01 GMT -5
the leaflet i got with the carb said to use 3% oil in the mix . If the part of my brain which does math( a very small part of my brain) is correct then that pretty close to a ratio of 32:1. Now if that is what the recommended ratio should be for normal use should i increase the mix slightly while im running in? cheers ben
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Post by reveeen on Mar 30, 2012 1:23:57 GMT -5
should i increase the mix slightly while I'm running in?
It all depends what you are using for oil. For a reasonable quality synthetic I would consider 32:1 "increased" from 40:1, but if you are using bargain basement dino oil I would consider 20:1 an "increase" from 25:1.
Just remember: adding oil leans out the mixture.
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Post by andyfiggy2002 on Mar 31, 2012 2:49:24 GMT -5
can you actually seize it if you use to much oil or will the lack of fuel just stop the engine firing up?
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Post by reveeen on Mar 31, 2012 3:16:02 GMT -5
There is a delicate balance to be attained.
Too much oil will gum up "the works", steal all your power, and under load/speed could cause seizure.
If you are pre-mixing, you are just as well to do it in a separate container, and pay attention to what you are doing.
If you can't do that then leave the oil injection alone.
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Post by jmkjr72 on Mar 31, 2012 12:24:34 GMT -5
as the oil displaces the fuel you also can loose some cooling abilty and run hot and seize
a big part of your cooling is from the incomeing fuel
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Post by felliott on Mar 31, 2012 16:49:26 GMT -5
the more oil you use you will lower the octane of the gasoline.
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2tfvr
Scoot Member
Posts: 30
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Post by 2tfvr on Mar 31, 2012 19:21:53 GMT -5
if the bike is relatively new then i'd leave the the fuel injection alone. but one sign of an oil leak from the oil lines i'd ditch the injection and go premix. try motorex racing synthetic oil for scooters, and be brave enough to follow their recommendation of MIXING UP TO 1% RATIO. i've used em here in tropical conditions and improves and shortens run-in/break-in times and is economical even if it cost a lot. imagine a quart of this stuff can be mixed to about 100 liters.
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Post by reveeen on Apr 1, 2012 2:10:43 GMT -5
Here is a FYI for anyone foolish enough to believe 100:1 motorex oil website: www.motorex.com/index.cfm?oid=1147&lang=enI did manage to poke around there a bit. I could not find the spot where you could submit a claim for engine damage. That tells me either of 2 things: 1) they have no claims, or 2) they offer no warranties and do not give a crap about me (and rightfully so they do happen to be in Switzerland, a world renowned place for oil). When mixing oil with fuel, for your own benefit, please follow the instructions/recommendations of the folks who offer you a warranty, or have offered you a warranty in the past. This means SIMPLY: follow the recommendations of the folks where your piece of equipment was born. Please let someone else do the oil testing. |
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Post by 90GTVert on Apr 1, 2012 8:02:55 GMT -5
I use AMSOil Sabre Professional 100:1 in all of mine, but I only mix it at 50:1. I tried 80:1 when I first got it and that resulted in seizes. I've been using 50:1 for a few years now with good results. I think the stuff prob would work at 80 or 100:1 in a two-stroke tiller or weedwhacker maybe, but not in my scoots.
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2tfvr
Scoot Member
Posts: 30
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Post by 2tfvr on Apr 1, 2012 8:03:31 GMT -5
Here is a FYI for anyone foolish enough to believe 100:1 motorex oil website: www.motorex.com/index.cfm?oid=1147&lang=enI did manage to poke around there a bit. I could not find the spot where you could submit a claim for engine damage. That tells me either of 2 things: 1) they have no claims, or 2) they offer no warranties and do not give a crap about me (and rightfully so they do happen to be in Switzerland, a world renowned place for oil). When mixing oil with fuel, for your own benefit, please follow the instructions/recommendations of the folks who offer you a warranty, or have offered you a warranty in the past. This means SIMPLY: follow the recommendations of the folks where your piece of equipment was born. Please let someone else do the oil testing. i agree on this. at first i couldn't believe what their claiming. me and my buddies debated on how their recommendation on mixture was written "UP TO 1% MIX". some argue you can start lower than that if they're product is that good (which doesn't also sound wise to me :-X) or does it mean you start of with a higher concentration and work your way down which was the route i took. so far so good for something that churns out 10,000rpm or so on tropical weather. (i don't work for motorex by the way :) ). i must admit i did bite the bullet on this since people here frown on the sight and the stench of cheap 2t oil. plus did consider of what could happen in case it failed that's why i acquired spare parts before i used it. ;D you can try this test when i check out oils which is crude but at least it convinces me - take a frying pan and place a measured amount of your choice and compare it to other oils. see how fast it easily smokes or fries and what kind of deposit it leaves behind. do this outdoors by the way because it'll foul up the kitchen or the whole house :-[ . as they say also "buyers beware". peace ;D |
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