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Messages - VintageBlueSmoke

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16
General Two Stroke Talk / Stewie needs to play on a 2 stroke
« on: December 18, 2014, 10:06:10 PM »

17
General Two Stroke Talk / Stewie needs to play on a 2 stroke
« on: December 18, 2014, 04:17:09 PM »
Wish I had page 1.

19
Vintage Two Strokes / HELP, Bike Choosing!!
« on: July 15, 2014, 06:02:26 PM »
I would be very happy on the '99 YZ.

The YZ was the best bike from the mid '90's to the mid '00's until KTM bested them with modernization (just my opinion). The YSS is the best thing since the cartridge fork though.

I know this means nothing but between '96 and '02 I had each year YZ125. The '98 was my favorite, but the '99 was exactily the same. I kept the year old bike as my practice bike and the extra engine and suspension work I did on the '98 was really nice. The '99 got the suspension from the '98 but not the motor (139cc). When I got the '00, I sold the '99 and kept the '98 (after getting my suspension back - of course). Almost no parts fit from the '01 and up but everything fits well from '96 to '00.

I found that out the hard way...but that's another story.

20
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: March 13, 2014, 11:40:11 PM »
I use either Castrol GTX or Mobil1 1 in the gearbox. I can't remember what it costs me now but I am sure it is about $40 or more for 6 liters. I run Amsoil for premix. I think it was $90 for 4 liters. I mix with 98 octane pump gas.

21
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: March 13, 2014, 05:14:39 PM »
@mj4trax - I am just theorizing here but are you changing your silencer packing before trying different oils?

Maybe you have the same amount of particulate matter but one is heavier so collects as spooge?


22
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: March 11, 2014, 10:24:58 PM »
Sorry Stu. I wasn't insinuating anything. Just throwing it out there to consider.

23
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: March 11, 2014, 11:29:03 AM »
Quote
As much as I would love to spend $35 a litre on what is apparently liquid gold, doesn't that kinda defeat hte purpose of me saving money?

But are you really saving money if you have an oil realated failure? What if the part is irreplaceable as some vintage stuff is? When my '75 360 Husky handgrenaded, I really felt like a close family member died and honestly considered not riding my old bikes anymore. Like all family deaths, you eventually get over it and move on, but hopefully you learn something from it. (I aparrently did not!)

The other thing to consider is horsepower. Oil in the gas is only their to lubricate the moving parts. Running more oil allows you to run more fuel/air thought the cylinder without generating more heat. A big cause of detonation is heat build up (dieseling). Better oils help prevent it.

I don't know if that stuff is worth more than decent scotch but I bet my bikes would like it more!

24
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: February 03, 2014, 09:05:16 AM »
At least every ring.  :o I know that seems excessive but just think that that packing has such a great effect on your jetting. It is equivellent to running with out an air cleaner (well OK, the opposit affect).

25
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: February 02, 2014, 09:25:53 AM »
Yes, the trick is to decipher the codes that follow motor oil to determine what is best for you. They intentionally make it difficult :) so just say "screw it" and buy what the famous person selling it tells you.

I would doubt you need to run richer (and remember more oil means leaner jetting) as it is only the breakdown of the oil that would cause a failure and if you are changing it regularly, and are jetted correctly, it should be alright. I would think probably to MOST important things to do would be power valve and silencer maintenance. Both would probably need more and frequent attention.

26
Non-Moto / Engine oil: Mineral, semi-synthetic and synthetic
« on: January 30, 2014, 12:22:50 PM »
I don't have any good information so you can stop reading now...

My Dad swore up and down by natural oils. As a professional race engine builder, you had to put some weight behind his observations. However, synthetic oils have developed by leaps and bounds since he was building race engines. This is what I do know...

Between 1990 and 2001, I raced just about every weekend...somewhere. I also rode during the week "for training". I did oil changes and cleaned the filter every day I rode. I used Castrol GTX 20w50 in the bottom ends, some kind of specific foam filter oil and premixed Silcoline synthetic at 40:1. I would change the plug before any national or GNCC just because.

I had no oil related failures in that time. In 1998, I raced 48 events on the same piston/ring. When we tore down the bottom end, it looked new! (We big bored the top it was so bad!). I even had two events where the drain plug came out and dumped the oil in the forest somewhere. I finished 1st in one of those events and 3rd in the other.

I am not saying mineral is better than synthetic...but my guess is that it is not so much better that you should care. We live in a "throw away society". Do you really care if your piston lasts 5 minutes longer or your clutch lasts 1/3rd of a ride longer? Do you really care if your gears last 25 years? No. You plan to ride your bike 1, 3, or 5 years..sell it and buy the lastest weapon of choice.

I run synthetic now because I'm stupid. It is twice as expensive as mineral but I don't know what a brand of good mineral oil is so I don't want to chance it. I used to have good links for oil information. It is out there and not brand specific. (You probably need to be an engineer to understand it.) I'll see if I can dig it up or you can just Google like crazy!

27
Riding Spots / Week day riding in Miami? 21st-24th July.
« on: January 23, 2014, 11:24:15 AM »
There was just a riding spot there in the news. Something about how the Fire Department was "taxing" them out of existance. or something like that. If you find that article, you might find a place to ride.

28
Technical / Painting exhaust
« on: November 18, 2013, 02:53:31 PM »
I paint my pipes all the time (vintage bikes don't come with shiny FMF fatties!). During a resto (for a race bike obviously), I glass bead blast the pipe to get is clean. Then I use Rustolium or other BBQ paint. I've tried other engine paints and they don't hold up as well. Of course, I like the flat blacks used for BBQ's (barbies for you up-side-down peoples!) and never compaired back to back with the red, orange and silver engine paints I've used.

Of course, eventually you have to repaint them but that is another benny of the flat black, just clean it and spray it on again over the top!

29
Open Forum / OSET 20.0
« on: October 07, 2013, 09:29:38 AM »
Bradshaw moved to the big bikes. He just couldn't beat the Factory Hondas. Being 'first loser' (second place) didn't sit well with him and he'd ride (WAY) over his head to compensate...started gettign hurt.

He went on to other things. I saw him at a vintage race a little while back...on a 125...Husqvarna!


30
Open Forum / OSET 20.0
« on: October 06, 2013, 10:00:57 AM »
It is crazy but before the rule, F1 engine builders were building engines to last just 5 laps! The current rules dictate the total number of engines per year AND how many races they must go before changing them without penalty. The penalty in motocross would have to be different because if F1 it is determined by starting grid position (-10). Same for gearboxes.

In motocross, about nobody "builds" the engines. They are all box stock factory and are sent to just a handful of "specialty" aftermarket tuners. In F1, there are 4 manufacturers who supply the 11 teams. In theory (by contract) the factory team and the leasing teams have the same engine (except Ferrari which the leased engines are 1 version behind). There is no way to get the engine - it doesn't come in any road car. Even if you buy a couple of year old race car for personal/museum use, you have to rent the engine. The engine comes with engineers and mechanics. The technology is just as secret and just as protected  as any military nuke.

I am not saying that MX should adopt F1 rules directly. It could however use some of the cost cutting enforcements (such as limiting the number of engines and number of races per). It would help MX both the rich and poorer rich riders.

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