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Post by pistonguy on Jul 9, 2015 19:05:48 GMT -5
Nuts on the Back side.
That other is 100% Genuine Fake ABS. just a lousy check valve to prevent a Hydraulic Spike. Ya ya Fake ABS.
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Post by pistonguy on Jul 8, 2015 19:17:03 GMT -5
Haha I'm too young so I'll pay if you go to the bar  I'll take that rain check I should have more accurately asked for a Pint in true Brit style. To hang at the Ace Cafe on a weekend night is on my Bucket List. |
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Post by pistonguy on Jul 8, 2015 18:39:25 GMT -5
New Rings, Old Rings, Wont make any Noise.
Not even a Scuffed or Seized Piston will make that Noise.
Check your Right Side Fan cover and your Left Side CVT Cover for something rubbing in there,
Most likely you will find that Mouse in there.
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Post by pistonguy on Jul 8, 2015 18:16:00 GMT -5
No Problem
One thing.
you owe us a beer at the Ace Cafe
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Post by pistonguy on Jul 8, 2015 5:31:16 GMT -5
 Nuff Said!
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Post by pistonguy on Jul 7, 2015 9:54:43 GMT -5
How old is the Scoot?
I see your in London? London England?
you then most likely ride in the wet to rain?
Most likely there is Trash and Rust built up in the Caliper Bore.
You inadvertently Bumped the Brake lever and sent the Piston Past its Normal stroke over Top of the Crud.
In this case you most likely can't compress the piston and will have to disassemble the Caliper.
Skip the screw drivers and take the assembly to a place you can get to a air hose nozzle.
Remove the Brake Line and Blast Compressed air (110-120psi)Into the Brake line hole on the Caliper and the Piston will pop out.
Now you will have to clean up the Caliper Bore, There are special Hones but you can probably get by with some light (400 Grit) Emory Cloth.
Originally from the Rust Belt this a Common problem on Automotive.
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Post by pistonguy on Jul 7, 2015 9:44:16 GMT -5
I dot have any specific info on exactly what you have. However  Psi is on the Low side but Plenty Enough to Start and Run. How bout some Scoot history i.e. How many miles on her? type of Oil? |
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Post by pistonguy on Jul 3, 2015 7:29:49 GMT -5
Yes. But if you are asking if I did something dumb, and pulled the cylinder out, looked at the hole, and put it back, the answer is no. Already learned that the hard way. I didn't take the cylinder out. I just loosened it, and raised the jug a bit. That 37mm jug is in there pretty tight. The normal 139qmb's have a good bit of room. This one doesn't. I have a 47mm, and a 50mm cylinder that I compared. Oh Ok. So when the Re-Used Head and Base Gasket Weep down the road aways Who Pays to Fix It? |
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Post by pistonguy on Jul 3, 2015 7:24:42 GMT -5
C;mon Post up a Pic of the Trophy!
Lets see that buctakated Leg.
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Post by pistonguy on Jul 3, 2015 7:14:17 GMT -5
if you have air in lines you can't compress because air can't be. you need to open bleeder valve then compress piston back inside itself. Then put in pad then bleed out air because you get very little action per lever you will need to do it a lot in less you have a vacuum devise which will help you out a lot. Harbor freight sells them around 15.00 Air can't be Compressed? Since When? How thee heck do I get 3,000 Psi worth in my tank to go Diving?. How does my Air-Compressor work then? So then Hydraulics Don't work cuz you Can Compress it. I'm all Confused |
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Post by pistonguy on Jul 1, 2015 8:21:42 GMT -5
so you just popped the head off and measured the Bore?
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Post by pistonguy on Jun 30, 2015 9:21:31 GMT -5
I installed one of little Digi Tachs I got for fee at a trade show.
Shows Hours, RPM's, and on shut down shows max RPM for a few seconds.
Now adjustability on the Digi, Just wrap the lead around the spark wire.
The Digi indicates 200-300 RPM lower than Analog at idle (1,900rpm)
Gets progressively worse at high RPM"S, Digi indicates 500-600 Lower than Analog over 7,000 rpm.
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Post by pistonguy on Jun 24, 2015 13:20:11 GMT -5
There is a chance a chance the the Coating Itself may give the piston its appearance.
In that case I could be WRONG.
But then again.
I see this Porous spot on the upper right corner of the Circlip slot big enough to stick a pin in.
So whats the Coating on the Underside all About Anyhow?
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Post by pistonguy on Jun 24, 2015 8:45:44 GMT -5
Nice Pics.
I still say the texture is Wrong.
There is one nice side view is the best showing me a Porous Texture.
You just wont have this Porosity in a True Forging.
I stick by it is a Squeeze Casting.
I can't come up with a reason the Underside of the Piston has a Coating on it.??
I have some ideas but at this point I'm not going to pass on any info that might help TD.
They have ruined any credibility with me over there sending you that Video with Chinese writing on it.
and say, we do like this quality.
The nerve of them (a Taiwanese) Co. Taking a American mfg companies video and using it.
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Post by pistonguy on Jun 23, 2015 12:54:28 GMT -5
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Psi is on the Low side but Plenty Enough to Start and Run.