Mossy
Well-Known Member
- Local time
- 11:49 PM
- Joined
- Jan 7, 2022
- Messages
- 2,624
Garbage is what I thought?Does G stand for gangster or God? I'm confused. LOL JK
I thought "G" spot
Garbage is what I thought?Does G stand for gangster or God? I'm confused. LOL JK
I thought "G" spot
I have a pair of tires that I have saved as spares that have used only 25% of their tread and have 3000 miles on them.i would make sure to put a cross hatch on the cylinder wall before you assemble it. the cross hatch will make sure that the cylinder wall retains oil. it will give some added protection against seizure next time. ive put over 1,000 miles on my 49cc, im about ready to put on a 3rd set of tires, and have yet to have a single problem.
I cannot not condone trying to put a cross hatch in most of these 2t's with chrome plated lining or any of the good ceramic jugs it's done all ready and mostly will just do damage to the all ready way to thin coatings.i would make sure to put a cross hatch on the cylinder wall before you assemble it. the cross hatch will make sure that the cylinder wall retains oil. it will give some added protection against seizure next time. ive put over 1,000 miles on my 49cc, im about ready to put on a 3rd set of tires, and have yet to have a single problem.
Why do you need the extra length on your intake?Replaced that crappy elbow in pic above. It was cut from a crappy z-pipe extender. I cut another one from a different Z-pipe that was welded properly (not cut bent over and tacked).
View attachment 171030
First run aborted, found a head leak! The squish band was not flat, had dip in front and back. Sanded flat on plane surface, refit new gasket.
That fixed, ran again. Seems to be 4-stroking a lot I thought. I put NT carb back on, w/ a 67 jet, and clip in middle. Ran like crap. Bogged, and bad top end.
Maybe not 4-stroking. Crap this pic comes to mind.
Who was it said it got too hot? I was listening.
View attachment 171032
Put the Bofeng back on, w/ needle clip at top. Ran a bit, this time great accel but still sputtering at top.
Came on here to find out what jets fit the JRL Bofeng (Predator 212). Ordered, be here tomorrow.
Pic of Bofeng jet.
View attachment 171033
Putting in a 75 and see how it sounds.
Break in can wait till I'm sure its rich. I did a paper towel test around head, intake, exhaust, no trace oil. Maybe overheat popped that clip out? Maybe head was leaking but I didn't catch it?
Anyways, trying not to smoke this jug.
One last concern...that torquer-up pipe. Is it worse from a overheat perspective than running stock pipe? I took a curve out, that shortened header by 5 inches, yeah it moves the powerband, is it just a performance issue with this thing or a concern?
On plus side, drivetrain is rock solid now, very pleased, I can feel rigidity, ease of pedal-start even with my tall jackshaft gearing. I'll modify fatbike mounts at least as rigid as that, maybe more, I have a keyed shaft with threaded end I can locknut one side. No hurry on that one, still trying to get this one right.
Presuming this torquer-up pipe has a resonance, and acts as a tuned pipe, and someone did maff for dimensions, taking out 5 inches of header moves the RPM sweet spot higher.Why do you need the extra length on your intake?
The extra length on the intake isn't going to affect any of that. Mount your carb directly to the black intake and eliminate the hose and clamps. All that stuff just makes it easier the get an air leak.Presuming this torquer-up pipe has a resonance, and acts as a tuned pipe, and someone did maff for dimensions, taking out 5 inches of header moves the RPM sweet spot higher.
How much I dunno.
Maff is hard.
How much should I care depends primarily on how much overheat it might cause. Secondary is where RPM sweet spot should be, hoping its not at WOT.
Did removing 5 inches move that higher?
And how much?