-
Hi everyone,
As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.
When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.
Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.
Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.
Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.
Thanks for your patience and support!
What oil to run in 2stroke
- Thread starter Leland_S
- Start date
justintendo
klotz super techniplate junkie
klotz 40:1..if i was racing and hammering it harder all day would probably go 32:1.have a run this stuff for a long time and had great wear results. its fairly clean altho amsoil interceptor is probably cleaner. i love the castor aroma tho
ray_ray
Mini-Sponsor
This 60:1 ratio is run by others on this forum ... Why and how is it OK to run this low-ball-oil-amount is probably about the last motorcycle-oil question yet to be answered ... Myself, I'm staying in the 35-40:1 range on my caviga\Husky 250cc 2t bike ...
No. It's been debated many times here on CH. I run oil that has specifically been designed to run at very high dilution ratios. Been running Motorex at 60:1 (Husqvarna suggested 50:1 for my WR300) in my mid sized bikes since 2004. Run the mini and the 125 at 50:1. Run the trials bike at 100:1. People will tell you that low dilution, especially around 24:1 is the best for lubricating protection. Not going to debate that. I just know what works for me.
Tinken
Husqvarna
Pro Class
24:1 is the highest horsepower, but difficult to jet for. 32 to 40 is your best range for hp/engine life. Ty used to run 50:1 when he raced Supercross, but they rebuilt their engines every weekend. If you are hard on your engine or hold it wide open with 100:1, seizure is eminent.
justintendo
klotz super techniplate junkie
i always found that really interesting how the heavy oil causes best power. 2 cycles are so unique
Zomby woof
Husqvarna
Pro Class
If you wring it out, running fast lap times and high RPM, I think it would be wise to err on the side of caution and run something in the 32-40-1 range. If you're a recreational/trail rider, then 50, or 60-1 is probably fine.
I use Amsoil now because it's supposed to be top notch oil, and it's half the price of any other quality oil around here. I used Maxima 927 for 6 years in my last 125 and it looked new inside right up until I sold it with over 200 hrs on the bottom end.
I mixed 32-1 for my 125 and despite the fact that the Amsoil rep keeps telling me I can mix their oil at 50-1, I'm still mixing 32-1 for the CR150. Nobody ever blew up because they used too much oil in their premix.
I use Amsoil now because it's supposed to be top notch oil, and it's half the price of any other quality oil around here. I used Maxima 927 for 6 years in my last 125 and it looked new inside right up until I sold it with over 200 hrs on the bottom end.
I mixed 32-1 for my 125 and despite the fact that the Amsoil rep keeps telling me I can mix their oil at 50-1, I'm still mixing 32-1 for the CR150. Nobody ever blew up because they used too much oil in their premix.
Tinken
Husqvarna
Pro Class
Seals up the rings for better compression.
ray_ray
Mini-Sponsor
Unique and if these engines did not perform so well across so many platforms such as lawn equipment and bikes and other machines that need inexpensive engine power, they would die off ... ESP with a huge CORP as honda turning their backs on this technology.
robertaccio
Husqvarna
Pro Class
remember these are all street going DOT/FIM homologated bikes, just not here in US.
the standard miscela (premix from the pump) was always 50:1 2% is what the pump said. This was the cert balance for street legal DOT certs for the various countries in EU. So the OEMs right down to 50cc racer replica bikes built their bikes to handle this mix, however as others and Tinken mentioned, a little heavier on the oil to fuel ratio will help your 2T last and perform. Its all about the jetting, Ive seen many 32:1 run bikes with dry gray exhaust ends, they are just jetted clean for that ratio.
I asked the Fantic factory people about the 50cc racer replicas and what they recommended for mix ratios ( I imagined they would say 24...32:1-3%or 4% for those little screamers, nope they said 2%. ( that is again probably in their mandate, I bet the race teams that run the mini enduro teams are not running 50:1), or if they do...they do tear downs as most race team do anyway. see below 50cc mini enduro....I love it.
View: https://www.youtube.com/watch?v=GyufU0WQd4w
the standard miscela (premix from the pump) was always 50:1 2% is what the pump said. This was the cert balance for street legal DOT certs for the various countries in EU. So the OEMs right down to 50cc racer replica bikes built their bikes to handle this mix, however as others and Tinken mentioned, a little heavier on the oil to fuel ratio will help your 2T last and perform. Its all about the jetting, Ive seen many 32:1 run bikes with dry gray exhaust ends, they are just jetted clean for that ratio.
I asked the Fantic factory people about the 50cc racer replicas and what they recommended for mix ratios ( I imagined they would say 24...32:1-3%or 4% for those little screamers, nope they said 2%. ( that is again probably in their mandate, I bet the race teams that run the mini enduro teams are not running 50:1), or if they do...they do tear downs as most race team do anyway. see below 50cc mini enduro....I love it.
Tinken
Husqvarna
Pro Class
Yes sir
justintendo
klotz super techniplate junkie
probably your best bet!
ray_ray
Mini-Sponsor
This is a little interesting here and I'm gonna use your words Rob to tie into my 40 yr old package of oil+gas 4 2t bikes..
This 50:1 mix is the standard for 2-strokes in EU and sold on the street corner pumps? As far back as 1974 when I was riding in AR, we all used 4oz of oil to the gallon... 32:1 -- Thats for Japanese bikes we rode then. Have we somehow got the mixtures crossed between these different brands of machines for the last few decade now? Or is it just the jetting in the CARBS from the different manufactures?
--
One last thought ...The Japanese 2t enduro bikes had oil pumps on them at one time ... They used alot less oil on that pump than that 32:1 mix ...
None of this is gonna change my oil+gas mixture ... I just like to be in the light and not in the dark ...
Having just restored my 84 IT200 I was in the same boat. For years I used Golden Spectro at 48:1. This produced perfect plugs, and kept the rings free and clean. Plus that's what my Dad ran when it was his, so I just followed suit.
Right now I'm running Maxima Ester based synthetic blend. I looked in the factory book (remember when bikes came with these and tools?) and it said 24:1. So for now I'm trying 34:1. However looking at the old notes the 330 pilot that came with the donor carb was what I used to run in the High Sierra. I think the first day will be a carb fiddle day with many plug checks. I'm hoping that my stash of jets will yield good results.
Right now I'm running Maxima Ester based synthetic blend. I looked in the factory book (remember when bikes came with these and tools?) and it said 24:1. So for now I'm trying 34:1. However looking at the old notes the 330 pilot that came with the donor carb was what I used to run in the High Sierra. I think the first day will be a carb fiddle day with many plug checks. I'm hoping that my stash of jets will yield good results.
Having trouble finding it locally. Might have to try a little harder or look on line. It's been about 10+ years since I have had the pleasure of riding a 2 smoker. Glad to know it's still out there. I went with Maxima because that was always the go to back up when Spectro wasn't in stock. Thanks for the tip boss.
robertaccio
Husqvarna
Pro Class
In the 80s I ran Golden Spectro at 50:1 in my KDX200 and ATK406. All my east coast buds ran the same.
for my last KTM250 (40:1 Maxima super M) and now for my Husky TE300 I run 40:1 Motul 800 75% + maxima 927 25% and my jetting keeps my exhaust mostly dry (zero spooge) but on the safe side with black soot. My former KTM250EXC had grayish dry exhaust and I always ran race gas, she was jetted very clean and "sharp" (see Juha note below).
all these oils are so good now, mix how you feel comfortable but jet properly within the oil spec and bike spec. Good example is Ajax's 165 and his 300, 32:1 (oil brand?)with race gas, grayish dry exhaust end, tuned/jetted clean and perfectly, GP style.
A top tier pro example of different choice....Juha Salminen always had spooge running from his pipes (fat) jetting on his KTMs, when questioned about it he said he liked his bike fat/rich jetted to keep the power smooth not "sharp" (but of course not plug fouling fat), so there is another thought process about jetting ( I have no idea what Juha's mix ratio was).
For Ray, Im sure those 50 and 60:1 OEM spec ratios are for sure part of the DOT cert spec for EU 2T engines, to pass DOT/TUV spec for emissions or unburned and burned smoky Hydrocarbons (2T oil). They are built to handle low oil content, but for sure will last longer with more lube from higher oil to fuel ratios.
for my last KTM250 (40:1 Maxima super M) and now for my Husky TE300 I run 40:1 Motul 800 75% + maxima 927 25% and my jetting keeps my exhaust mostly dry (zero spooge) but on the safe side with black soot. My former KTM250EXC had grayish dry exhaust and I always ran race gas, she was jetted very clean and "sharp" (see Juha note below).
all these oils are so good now, mix how you feel comfortable but jet properly within the oil spec and bike spec. Good example is Ajax's 165 and his 300, 32:1 (oil brand?)with race gas, grayish dry exhaust end, tuned/jetted clean and perfectly, GP style.
A top tier pro example of different choice....Juha Salminen always had spooge running from his pipes (fat) jetting on his KTMs, when questioned about it he said he liked his bike fat/rich jetted to keep the power smooth not "sharp" (but of course not plug fouling fat), so there is another thought process about jetting ( I have no idea what Juha's mix ratio was).
For Ray, Im sure those 50 and 60:1 OEM spec ratios are for sure part of the DOT cert spec for EU 2T engines, to pass DOT/TUV spec for emissions or unburned and burned smoky Hydrocarbons (2T oil). They are built to handle low oil content, but for sure will last longer with more lube from higher oil to fuel ratios.