|
|
Post by gsx600racer on Feb 26, 2017 15:54:44 GMT -5
Ok so what oil do you guys preffer. I'm following this thread as I want to ditch the pump all together when I installmy kit Amsoil Dominator |
|
|
|
Post by eclark5483 on Feb 26, 2017 16:19:10 GMT -5
I use what Honda recommends. Pro Honda GN2 Injector oil. I have no preference or experience with any other brands.
|
|
|
|
Post by niz76 on Feb 26, 2017 17:13:31 GMT -5
I like these little measure containers for premixing. (It has the measurement marks on the other side of the container) 2% = 50:1 or 2.56 oz. per gallon....  |
|
|
|
Post by eclark5483 on Feb 26, 2017 17:55:40 GMT -5
I bought a dozen of these off of eBay: www.ebay.com/itm/141628716909Fill to the 30ml line, and dump 4 of them into 1 gallon of gas for 32:1. I keep 2 of them in my scooter's glovebox so that all I have to do, is stop at the gas station when fuel is low, put in exactly 1/2 gallon of gas in the tank, dump in 2 vials... and off I go. That will hold me just fine to cruise around more and refill when I get home. They are absolutely waterproof so I don't worry about knocking them over and having oil seep out. They are small enough that you can stick em in your jacket or even pants pocket. And the best part, super easy to fill and measure. |
|
|
|
Post by 190mech on Feb 26, 2017 20:35:48 GMT -5
Right on eclark! 32 to 1=4oz to gal="LET EM SMOKE-LET EM LIVE!"  |
|
|
|
Post by ryan_ott on Feb 26, 2017 21:08:45 GMT -5
I use Amsoil Dominator at 32:1. Good quality oil you can usually find it for about $10-12 a quart. Some NAPA auto stores carry it but if you look up your local distributor you can probably just pick it up from them. For mixing grab a ratio-rite cup from any bike dealer. It has marks for any ratio you could ever need. www.motorcycle-superstore.com/7411/i/ratio-rite-measuring-cup |
|
|
|
Post by ThaiGyro on Feb 27, 2017 6:29:11 GMT -5
Haha...Like Vert and Tsimi and others have said, many variables. I always toss mechanical parts that add no value in the closest garbage can. Like oil pumps
I prefer pre-mix anytime, because I control it. My Honda came with the cable throttle from hell story, if adjusted correctly and constantly and consistently, it would theoretically perform through the OEM powerband. That was of course, limited to 8700 rpm by ignition.
With an OEM engine, you should consider your starting point at what the manual says. (Mine was 40:1)
As you gradually add performance modifications, you can consider making changes for more protection, if needed.
There are more threads on rich versus lean FUEL mixtures related to carb adjustments.
Here is my historical thought: If you change something like a piston size, as mentioned...Do the calculation and adjust as needed.
If you change anything that increases rpm dramatically, do the calculation and adjust as needed.
Porting? calc, adjust
Pipe change? calc, adjust
Ignition timing is a big one to consider. Advanced? calc, adjust
Do you record head and/or exhaust temperatures? You might consider it as potential visual protection.
My old example from memory: Yamaha RD125B was pumped to a max of ~38:1, It's high performance brother the TA125 had the exact bore/stroke, but we ran 2.1 BTDC advanced timing, (RD was 1.8) with super good pipes. TA modified max rpm-14,000, RD max ~9500: The TA premix ratio was 20:1
I never holed a piston, with those mods, plus porting changes.
More of my experience: Many think that smoking from un-burned/partially burned oil is "normal". In my time building these, I adjust everything to minimize this...cold engine smoke can hardly be avoided, but visible smoking upon acceleration on a properly warmed engine is simply a waste....and to me, something not correct in the overall setup.
Others may disagree.
|
|
|
|
Post by Lucass2T on Feb 27, 2017 8:25:27 GMT -5
I use Castrol Power RS full synthetic.
I've run my 70mph axis on 50:1 for about 1000miles or so and it worked alright. But a little fatter like 40:1 would'nt hurt either.
Don't break your head on oil mixture ratio's. It's not rocket science. Just mix 40:1 with full synth oil and you're safe in EVERY situation with any setup!
|
|
|
|
Post by benji on Feb 27, 2017 10:21:12 GMT -5
I haven't seen any pumps fail, but I've heard about it. I've also seen many stock pumps working for upwards of 20,000 miles when left on a stock bike... I would think regularly taking it to higher rpms or using an aftermarket pump would be asking for a pump seizure, but what if you don't empty your tank completly? What if you don't add EXACTLY a gallon of gas? Then you need to pull out the calculator and scale so you can figure out exactly how much oil you need to mix to 32:1(or whatever ratio) or else you risk running lean or rich. Premix ratios effect air/fuel ratio btw displacing gasoline - it works so well I use premixed gas as a tuning tool, lean it out w some oil n see if it gets hotter or faster. People also say "bigger piston of course needs more oil", but it also pulls more air/fuel and therfore more oil into the cylinder. And if your ported and polished out, you should technically need even less oil in theory, as there wouldn't be any oil loss on rough cast port walls.
Has anyone tried disconnecting the pump and premixing at 70:1 for extended periods w a bbk? I would be very interested in that, maybe I'll document on my bike, but I'd rather just keep my pump on so I can get gas whenever I want/need w/o worrying about fouling my plug or overheating. I saw 90gtverts extensive thread on mix ratios, I think it would be cool to see a long term test w a very light ratio or even just a stock pumps
To begin, I'll share my experience. Stock vertical minarelli oil pump, ruima cast 47mm bore,750 original miles. I ran 32:1 in the first tank for break in and slowly burned through it by adding half a tank at a time. Now my gas looks almost clear in the tank, and I haven't added any oil (premixed) except the first 4 oz. Pump bled and working, smokes at idle and a little on throttle but not much.
|
|
|
|
Post by ThomasTPFL on Feb 27, 2017 10:44:42 GMT -5
So Wednesday I discovered my pump cam was sticking in the WOT position. I cleaned it and tweaked on the little tab that was binding against the top of the pump and got it to where it would again rotate freely.
Saturday morning my top end seized and I have no compression. Haven't had a chance to get in there and see what it looks like.
This is on my TGB with a 70cc cast iron kit, 17mm Mikuni clone, 100 jet, pipe. I do regularly keep it at or above 10k rpm. I'm thinking I may have just been letting it get too damn hot for too damn long.
One thing that has kept me from swapping to premix on the TGB is the pump has tubes to drop oil directly to the crank bearings. I like that. I will be going premix when I repair it but I may keep the pump to feed oil directly to the bearings. I know I'll wind up having to do some trial and error tuning. Probably start 40:1 and if it smokes horrible and fouls the plug back off 10% at a time.
|
|
|
|
Post by niz76 on Feb 27, 2017 11:55:33 GMT -5
Just find one of these pumps!  |
|
|
|
Post by ThomasTPFL on Feb 27, 2017 14:16:13 GMT -5
Where is that a thing?!?!?
Don't know that I'd trust it though....
|
|
|
|
Post by gsx600racer on Feb 27, 2017 14:28:38 GMT -5
So Wednesday I discovered my pump cam was sticking in the WOT position. I cleaned it and tweaked on the little tab that was binding against the top of the pump and got it to where it would again rotate freely. Saturday morning my top end seized and I have no compression. Haven't had a chance to get in there and see what it looks like. This is on my TGB with a 70cc cast iron kit, 17mm Mikuni clone, 100 jet, pipe. I do regularly keep it at or above 10k rpm. I'm thinking I may have just been letting it get too damn hot for too damn long. I had the same concerns with my TGB. linkThe general consensus was it would be ok with premix.  |
|
|
|
Post by gsx600racer on Feb 27, 2017 14:43:56 GMT -5
I use Amsoil Dominator at 32:1. Good quality oil you can usually find it for about $10-12 a quart. Some NAPA auto stores carry it but if you look up your local distributor you can probably just pick it up from them. For mixing grab a ratio-rite cup from any bike dealer. It has marks for any ratio you could ever need. www.motorcycle-superstore.com/7411/i/ratio-rite-measuring-cupAmsoil Dominator at 32:1 & ratio-rite cup... Its like you can read my mind or something.(or was it Selena Gomez)<---- I hope someone gets this. If not go here. |
|
|
|
Post by benji on Feb 27, 2017 16:43:08 GMT -5
Just find one of these pumps! Ok, I give in haha. Pre-mix from The pump-beautiful. |
|
