|
Post by catchacuda on Aug 14, 2017 9:46:53 GMT -5
Great, thanks for the link and video. I'll check again to be sure of the durations. I've come to realize I have no idea where to find a pipe for this thing. Plenty of scooter pipes I could maybe modify to fit.
|
|
|
Post by catchacuda on Aug 13, 2017 19:03:03 GMT -5
Thank you, what kind of durations would be recommended to wake it up some? Yes, the squish will need some work. I'm not bad with getting things flat on glass with paper, but there is also a machine shop literally 5 minutes from me. I figure I'll get the cylinder done and then see how it behaves and move to the cvt.
|
|
|
Post by catchacuda on Aug 13, 2017 16:50:33 GMT -5
So exhaust @ 152°
Transfers @ 107°
Does that sound more realistic?
I really feel like a fool here.
|
|
|
Post by catchacuda on Aug 12, 2017 14:39:18 GMT -5
I apparently don't know what Im doing, trying to check port durations. I position the piston just above the exhaust port on the down stroke. Put degree wheel at zero. Rotate the crank to bdc, and back to just covering the exhaust port. Time and time again Im seeing 305° Im sure im doing something silly here... Transfer duration shows 235°?? Also, using one base gasket.
|
|
|
Post by catchacuda on Aug 10, 2017 0:08:42 GMT -5
Thank you I'll check out your project, maybe optimizing my 49 is the better way to go especially considering how new I am to these. Never thought I'd enjoy small engines so much!
As for the grooves... I like the thought, yet must ask myself why no manufacturer with huge amounts of money and testing resources has put grooves in their heads if it offers any benefits.
|
|
|
Post by catchacuda on Aug 9, 2017 23:30:39 GMT -5
Hope the issue is resolved! Had a GY6 150 carb apart last week. If your stripped screw is accessible with vice grips go for it! I had to do this to avoid stripping a very tight fastener on the float bowl. Just clamp it down really tight and it should break free with little effort. ...Should you need that carb in the future
|
|
|
Post by catchacuda on Aug 9, 2017 19:49:59 GMT -5
Ah yes the "Starquest"! Those are probably my favorite Mitsu product, my father's co-workers has one he frequently runs in the 10's. I still have a sweet spot for the 3000gt/Stealth...
I have an odd obsession with 80's turbo cars in general. Id love a fox body turbo mustang. Most of my experience is with the chrysler four bangers though, learned a alot from those cars and some have taken that garbage 8 valve head into the 10's with no spray. The 16 valve Lotus and Maserati headed variants are cool but out of my price range :/
|
|
|
Post by catchacuda on Aug 9, 2017 18:31:51 GMT -5
Nice!! The rampage/scamp are awesome lil trucks! I'd like an L body of any form...
|
|
|
Post by catchacuda on Aug 9, 2017 14:49:10 GMT -5
I very much appreciate the input you both have provided. Just want to add, my current base "gaskets" are simply cut from a cereal box so I'm not sure how they compare to a real gasket in terms of thickness.
I suppose I have more research to do. I'll print the degree wheel and make a port map. Practice for the upcoming 70cc kit, pipe, and jetting.
|
|
|
Post by catchacuda on Aug 9, 2017 12:28:42 GMT -5
Please be advised im fairly new to the 2 stroke thing. When I first got this 1e40qmb the piston hit the (correct NGK) plug and closed the gap (while running). It had 1 base gasket. I've put 3 base gaskets on after noticing how low the ports were with the piston at BDC. Now, do I want the piston level with the bottom of the ports? The piston is still covering them a little. Is all of this pointless unless I make a port map and calculate durations, compression, and of course squish clearance? Please excuse the dirt, I am going to clean, tear it down, clean again, re assemble. BDC TDC for reference I also need to purchase a head, PO tried cutting singh grooves... LOL. Note the plug in the head at the moment is a lawn mower plug, simply so my lil one could tote around, need to pickup a new ngk.
|
|
|
Post by catchacuda on Aug 9, 2017 11:57:39 GMT -5
Anybody else like the 2.2/2.5 turbo cars of the 80's & 90's? 1990 Dodge Daytona Shelby, needs some paint. 2.5L turbo, balnce shafts removed, +40 injectors, garrett turbo, 2.5" exhaust, 3 bar map and Boost Button calibration flashed to the SBEC, FMIC, walbro 255lph pump. Needs some love but I can't help but like it as is.
|
|
|
Post by catchacuda on Aug 8, 2017 22:51:47 GMT -5
Other: 90GTvert had a helpful video on YouTube, I then asked a question about jet sizing and he provided a link to this site in his response. Great site and members!
|
|
|
Post by catchacuda on Aug 8, 2017 22:41:01 GMT -5
I know this site is mostly scooter based, but this site has been extremely helpful with getting a 49cc in my daughter's lil atv running and tuned. I do have a silly question.
The barrel adjuster is missing from the brake lever. Could anyone clue me in on what size it could be, so I don't order something that doesnt fit?
The lil atv is a Dinli Dino 50, appears to be the 1e40qmb, brakes are simply cable operated disc in the rear.
Any help is appreciated!
Ps. Is it as simple as measuring the diameter of it's hole in the lever?
|
|