Anyone have an extremely noisy bashan 250 engine? - Page 2

Azhule · 04-23-2017, 03:38 PM

Did you make sure the exhaust header nuts/bolts have enough torque on them? Don't remember exactly but it was over 10 or 12 ft lbs to seal that pipe up to the engine

Might have a leaky exhaust header gasket? Easy and cheap to fix that, get a Copper Crush Gasket from Honda

Or you might have the valves set on the wrong 'TDC' ?

Ariel Red Hunter · 04-23-2017, 03:59 PM

Quote:

Originally Posted by rwl6935

Well the heat shield and cat weren't causing the noise, it's definitely piston slap. I recorded the sound on my cell phone. I don't know how well it translates, but you can hear the valves which is normal and then when I pick up the rpms you can hear the secondary noise which is the piston slap. Let me know if you can hear it.

http://s859.photobucket.com/user/rwl...74F34.mp4.html

I did hear a thump there which could be piston slap. If it was me, I'd find a long, decent size screwdriver, and test it by listening at various places down the cylinder by sticking the blade between the fins on either the front, back, or drive side of the engine, and sticking the handle end in my ear. After that I would do the crankcase where the main bearings are, and below the cylinder/crank case joint to see if it is the big end. Now you did the valves, right? Was there plenty of oil up there? If not, it could be an oiling problem, which like any of the other things you find are warranty issues. Valves sound awfully loose to me, Should be .002 intake, .004 exhaust, inches. Could be just how you had the mike of the camera...ARH

rwl6935 · 04-23-2017, 07:36 PM

No, it's there cold or hot. I was hoping that once it warmed up the piston would expand and quite down, but it doesn't.

rwl6935 · 04-23-2017, 07:39 PM

Quote:

Originally Posted by Ariel Red Hunter

I did hear a thump there which could be piston slap. If it was me, I'd find a long, decent size screwdriver, and test it by listening at various places down the cylinder by sticking the blade between the fins on either the front, back, or drive side of the engine, and sticking the handle end in my ear. After that I would do the crankcase where the main bearings are, and below the cylinder/crank case joint to see if it is the big end. Now you did the valves, right? Was there plenty of oil up there? If not, it could be an oiling problem, which like any of the other things you find are warranty issues. Valves sound awfully loose to me, Should be .002 intake, .004 exhaust, inches. Could be just how you had the mike of the camera...ARH

I set the valves to .005 per the manual. It's funny that all these bikes use the same motor but require different valve gap.

rwl6935 · 04-23-2017, 07:41 PM

Quote:

Originally Posted by Azhule

Did you make sure the exhaust header nuts/bolts have enough torque on them? Don't remember exactly but it was over 10 or 12 ft lbs to seal that pipe up to the engine

Might have a leaky exhaust header gasket? Easy and cheap to fix that, get a Copper Crush Gasket from Honda

Or you might have the valves set on the wrong 'TDC' ?

Oh, so you're saying the copper gasket may be rattling around. I'll check that.

rwl6935 · 04-23-2017, 07:42 PM

Quote:

Originally Posted by da4design

does the rattle go away after it warms up?

No, same hot or cold.

rwl6935 · 04-23-2017, 07:44 PM

Quote:

Originally Posted by Ski_rush

Sorry that I don't have an answer, but my bike does not sound like that.

You're lucky! I spend more time fixing sh*t then riding.

Did you ever sell yours?

Sullybiker · 04-23-2017, 08:53 PM

Can you host it anywhere else but photobucket? My browser is choking on the sheer amount of ads and trackers that page tries to serve. Youtube would work.

My motor on my TT250 has a very distinct rattle. I'm told it's fine, it doesn't seem to bother it at all.

**JerryHawk250** · 04-23-2017, 09:03 PM

It's hard to tell from the video. Almost sounds like an exhaust leak. If you were close by I could check it out.

rwl6935 · 04-23-2017, 09:25 PM

Quote:

Originally Posted by Sullybiker

Can you host it anywhere else but photobucket? My browser is choking on the sheer amount of ads and trackers that page tries to serve. Youtube would work.

My motor on my TT250 has a very distinct rattle. I'm told it's fine, it doesn't seem to bother it at all.

Probably not going to put it on YouTube.

It's definitely not normal. The thing sounds like there's a bucket of bolts in the cylinder. I sent the seller a lengthy email about the issue. Let's see if I get blown off with these folks... if so, they will lose.

rwl6935 · 04-23-2017, 09:26 PM

Quote:

Originally Posted by JerryHawk250

It's hard to tell from the video. Almost sounds like an exhaust leak. If you were close by I could check it out.

Jerry, drive over on the hawk! Haha

MOTOXtreme · 04-23-2017, 09:41 PM

Wish there was something I could do to help you. Can't remember what happened with your first hawk but I hope they don't try to pull anything. Almost all these sites offer a "12 month engine warranty".

Ski_rush · 04-23-2017, 09:57 PM

Quote:

Originally Posted by rwl6935

Did you ever sell yours?

It's still available

rwl6935 · 04-23-2017, 10:08 PM

Quote:

Originally Posted by MOTOXtreme

Wish there was something I could do to help you. Can't remember what happened with your first hawk but I hope they don't try to pull anything. Almost all these sites offer a "12 month engine warranty".

Thanks, brian

I purchased an extended 12 month warranty, but that's only as good as the company backing it. I guess we'll find out Just how good.

vomitis · 11-13-2017, 08:13 PM

Do you have the counter balanced engine?

04-23-2017, 03:38 PM	#16
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	Did you make sure the exhaust header nuts/bolts have enough torque on them? Don't remember exactly but it was over 10 or 12 ft lbs to seal that pipe up to the engine Might have a leaky exhaust header gasket? Easy and cheap to fix that, get a Copper Crush Gasket from Honda Or you might have the valves set on the wrong 'TDC' ? __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
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04-23-2017, 09:03 PM	#24
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,554	It's hard to tell from the video. Almost sounds like an exhaust leak. If you were close by I could check it out. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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04-23-2017, 09:41 PM	#27
MOTOXtreme Join Date: Apr 2007 Location: Waynesboro, Virginia Posts: 336	Wish there was something I could do to help you. Can't remember what happened with your first hawk but I hope they don't try to pull anything. Almost all these sites offer a "12 month engine warranty". __________________ Brian Previously owned / operated MOTO Xtreme selling American Lifan / Check out my friends at www.armattanquads.com "Imagination is more important that knowledge" Albert Einstein
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04-23-2017, 07:36 PM	#18
rwl6935 Join Date: Mar 2017 Posts: 203	No, it's there cold or hot. I was hoping that once it warmed up the piston would expand and quite down, but it doesn't.
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04-23-2017, 08:53 PM	#23
Sullybiker Join Date: Dec 2016 Location: Western PA Posts: 363	Can you host it anywhere else but photobucket? My browser is choking on the sheer amount of ads and trackers that page tries to serve. Youtube would work. My motor on my TT250 has a very distinct rattle. I'm told it's fine, it doesn't seem to bother it at all.
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11-13-2017, 08:13 PM	#30
vomitis Join Date: Dec 2012 Location: North Vernon,IN Posts: 33	Do you have the counter balanced engine?
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