Two stroke air-cooled set up

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The_Pig
MegaSquirt Newbie
Posts: 1
Joined: Mon Jun 30, 2008 9:17 pm

Two stroke air-cooled set up

Post by The_Pig »

I am seriously considering converting an air-cooled two stroke engine to MS.
My concerns are sensor selection and usage. I see reference here to using cylinder head temperature instead of coolant temperature. A good possibility there for my set up, all I need is a source. Any known problems with running a wide-band oxygen sensor on a two stroke? I was always told to never use an AFR probe on a two stroke when using a dyno, but that was a long time ago. I suppose a heated O2 sensor could burn off some carbon build up.
Basically, has anyone else done something similar? I'd love to hear from anyone that has attempted this. I can trace down and diagnose issues with EFI systems, but have never attempted a ground zero build of one. This should get interesting.
SQLGUY
Experienced Squirter
Posts: 243
Joined: Sun May 14, 2006 3:03 am
Location: Colorado Springs, CO

Re: Two stroke air-cooled set up

Post by SQLGUY »

I used an oil temp sensor for warm up information on my air cooled engine, but here's a source for a head temp sensor: http://www.dakotadigital.com/index.cfm/ ... prd330.htm

Cheers,
Paul
MK_Micro
MegaSquirt Newbie
Posts: 14
Joined: Sat Dec 27, 2008 12:17 pm
Location: Germany
Contact:

Re: Two stroke air-cooled set up

Post by MK_Micro »

Check these two EFI'd RZ350:
http://www.smcomp.com/%7Esmurph/RZ-EFI/index.html

http://www.rd350.gmxhome.de/

The latter one is my own bike which is going to get the Mircosquirt in later 2009 ...
Regards
Martin Kieltsch
MS I, V2.2
MS II, 2.886, MicroSquirt (currently installed and running)
MK_Micro
MegaSquirt Newbie
Posts: 14
Joined: Sat Dec 27, 2008 12:17 pm
Location: Germany
Contact:

Re: Two stroke air-cooled set up

Post by MK_Micro »

PS: The heated Bosch LSU 4.2 lasts about 80 h in a twostroke application.
At my place this results in some 1 Euro costs per h of usage ;-)
Regards
Martin Kieltsch
MS I, V2.2
MS II, 2.886, MicroSquirt (currently installed and running)
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