fuel injection retro-fit interest - Page 3

recracer · 06-11-2014, 11:17 AM

Quote:

Originally Posted by Weldangrind

You're obviously more experienced with such things than I am, but I wouldn't weld near a magnet that I care about, especially a flywheel. Can you use metal epoxy?

Good question about the epoxy . Really I have no experience with it at all. just have seen many sine waves on cars over the years . I talked to My sales guy in china ,he said they machine off the old tab and gas weld a new tab on. appears the magnet is mounted inside the outer flywheel housing. I am thinking a couple mig tacks on each side should do it

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Weldangrind · 06-11-2014, 11:23 AM

Gas welding is a good idea, since the heat will be much lower. That said, a couple of MIG tacks would only produce short bursts of heat, and the flywheel should act as a giant heat sink. The good news is that flywheels are cheap as chips from China.

recracer · 06-11-2014, 11:58 AM

If I could just get china to make flywheels with 50btdc tabs ,without needing to order 1000pieces. I do want to see how the timing acts with the carb in place before starting to install the injection . That should be interesting

recracer · 06-12-2014, 07:13 PM

Does anyone know what flywheel puller I need for this 167fmm . It is completely different than the 200cc flywheel. Externally threaded hub

Weldangrind · 06-12-2014, 09:58 PM

I think this is it: http://item.taobao.com/item.htm?id=1...4.21023314.0.0

recracer · 06-12-2014, 10:49 PM

Quote:

Originally Posted by Weldangrind

I think this is it: http://item.taobao.com/item.htm?id=1...4.21023314.0.0

You could be correct it measures 28mm on the out side of the threads ,but I was not sure 28mm would be correct or if 27mm down in the threads would be correct.

Weldangrind · 06-13-2014, 12:50 AM

I recommend that you ask in the "Hey Humanbeing" thread. He'll know the characters to search for.

recracer · 06-14-2014, 01:26 PM

I saw the 3 Bolts and thought , I already have this tool. Hopefully you can get the idea, tab runs 15-35 degrees.

SpudRider · 06-14-2014, 01:35 PM

Good thinking.

How did you attach the tab to the flywheel?

recracer · 06-14-2014, 02:08 PM

Quote:

Originally Posted by SpudRider

Good thinking.

How did you attach the tab to the flywheel?

I should have said 15 to 35 being oe tab . 15 to 50 degrees before tdc is what I need to get done . I should also say, this is not a required mod , if you would just be looking for standard benefits of fuel injection . improved fuel mileage ,driveability , automatic fuel correction (o2 sensor ) altitude correction(baro sensor) pickup tab can be left untouched. I just thought if I was going to do it , I should see what power gains there could be as well.

Weldangrind · 06-14-2014, 04:22 PM

Harmonic balancer puller. Good idea.

Does the FI system have a knock sensor? If not, it might be tough to detect detonation when the engine is at full song. I'd guess that total timing shouldn't exceed about 40 BTDC, but I'm not sure. Any SBC I've worked on began to ping after 36.

Where did you find that degree wheel?

recracer · 06-14-2014, 05:48 PM

Quote:

Originally Posted by Weldangrind

Harmonic balancer puller. Good idea.

Does the FI system have a knock sensor? If not, it might be tough to detect detonation when the engine is at full song. I'd guess that total timing shouldn't exceed about 40 BTDC, but I'm not sure. Any SBC I've worked on began to ping after 36.

Where did you find that degree wheel?

Weld the system does not have a knock sensor . You are correct about timing advance on small block chevy engines . In this case I am dealing with some unknowns . Will it use all that timing ? Is it there more for injection lead time than ignition timing . That being said , Modern fuel injected cars use this much advance in light load cruise conditions for fuel mileage ,under light load detonation doesn't seem to be a problem . my guess full advance will not be in play during accelerating load. Pure speculation on my part

You can find printable degree wheels online , I plan to get some label stock and apply to a disc ,maybe metal or an old cd . i'll just have to see the direction my brain takes me then

humanbeing · 06-14-2014, 08:14 PM

Quote:

Originally Posted by Weldangrind

..."Hey Humanbeing" thread. He'll know the characters to search for.

Puller 拉码 (dyslexia or lazy guy write it as 拉"马")

3-in-1 http://item.taobao.com/item.htm?id=7418226241 tool that suits most clone(s).

recracer · 06-14-2014, 08:36 PM

Thank you Humanbeing. looks like there's a winner.

humanbeing · 06-14-2014, 10:16 PM

Quote:

Originally Posted by Weldangrind

Gas welding is a good idea, since the heat will be much lower. ...

Cover un-welded area w/ damp towel/cardboard . http://www.motoyes.net/BBS/thread-193561-1-1.html

06-11-2014, 11:23 AM	#32
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Gas welding is a good idea, since the heat will be much lower. That said, a couple of MIG tacks would only produce short bursts of heat, and the flywheel should act as a giant heat sink. The good news is that flywheels are cheap as chips from China. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-12-2014, 09:58 PM	#35
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I think this is it: http://item.taobao.com/item.htm?id=1...4.21023314.0.0 __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-13-2014, 12:50 AM	#37
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I recommend that you ask in the "Hey Humanbeing" thread. He'll know the characters to search for. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-14-2014, 01:35 PM	#39
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	Good thinking. How did you attach the tab to the flywheel? __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
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06-14-2014, 04:22 PM	#41
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Harmonic balancer puller. Good idea. Does the FI system have a knock sensor? If not, it might be tough to detect detonation when the engine is at full song. I'd guess that total timing shouldn't exceed about 40 BTDC, but I'm not sure. Any SBC I've worked on began to ping after 36. Where did you find that degree wheel? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-11-2014, 11:58 AM	#33
recracer Join Date: Jul 2009 Location: Charles Town W.V. Posts: 849	If I could just get china to make flywheels with 50btdc tabs ,without needing to order 1000pieces. I do want to see how the timing acts with the carb in place before starting to install the injection . That should be interesting
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06-14-2014, 08:36 PM	#44
recracer Join Date: Jul 2009 Location: Charles Town W.V. Posts: 849	Thank you Humanbeing. looks like there's a winner.
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