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January 7th, 2011, 06:25 AM   #91
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Re: Billet cylinder head

hello again. Sorry my internet has been down. My ignition is from powerarc.com We tested it with compression ratio up to 16 to 1 and still have a strong spark and that is way down from 0 rpm. Not like that f....... SEM . Anyway check powerarc.com akaberg
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February 12th, 2011, 11:36 AM   #92
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Re: Billet cylinder head

Thought I just let you guys know I haven't fallen asleep!
I went to the dyno, but there it turned out that the basic fuel map was way off. As soon as some load was put on the rear wheel the engine died (way to lean). Also there was a difference between the AFR-value the O2-sensor showed on the display and what was registered on the Microsquirt. So, I packed up and did my home work more thorough. After some tests in setting up the O2-sensor box and the Microsquirt (TunerStudio) I got corresponding AFR-values on both system. When the roads were free from ice and snow, the other weekend, I decided to take it for a test run and "entertain" my neighbours. I suffered from fuel starvation once any load was put on it. Back to the workshop and adjusted the map. Out again, little better but not good. My hands were tunring purple... Wonder if the laptop stays awake when I close the lid? Ah, it did! OK, so I found out that I should be able to use the "auto tune" feature in TunerStudio. You set up a AFR-table with the AFR-values you would like the engine to achieve. The you activate the "auto tune" feature, which measures the AFR and adjust the fuel map until the desired AFR values are reached! Quite handư tool for getting the first rough setting in place. So i fired it up, connected the laptop and stuffed it in my backpack. On the test runI could notice how the engine was behaving better and better after each "loading"! When I got to the next villaged the engine was running through most of the register on all loads (Alpha N - throttle positions). This was the very first time I actually thought that EFI might be a good thing!

Since then I took the engine out of the frame and inspected the cylinder head to make sure everything is looking OK, before I hit the dyno again. Everything was oily and without wear, so I just smacked it together again. So the moment of thruth is getting awfully close!
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February 12th, 2011, 01:13 PM   #93
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Re: Billet cylinder head

interesting Dr-C!

This was the very first time I actually thought that EFI might be a good thing!


the latest powercommander stuff is supposed to have that feature as well, aparently a great thing

I rode my Lifan 125 yz on the beach yesterday, it starves for fuel after 4-5 min on WOT, leaves the rider feeling very inadequate performance wise
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February 12th, 2011, 11:28 PM   #94
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Re: Billet cylinder head

Excellent Dr C

By the time you would get to the next village over here you would have the cops on your tail

Did it feel like it is going to perform as you would like? a bit early to say I guess.

Really intrigued by the Supermono class bike, something the average rider could get involved in.

When does your racing season start?

Good Luck

Cheers spanner
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February 13th, 2011, 08:04 AM   #95
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Re: Billet cylinder head

Originally Posted by bushmechanic
the latest powercommander stuff is supposed to have that feature as well, aparently a great thing
Yeah, not bad at all. BUT, you might get lost here! AFR-value is not allways pointing out were you are have top efficiency. Fx a cam timing with large overlap will let fresh intake gasses get into the exhaust pipe, and give the EFI wrong inputs. The braked dyno is still King.

Originally Posted by spanner
Did it feel like it is going to perform as you would like? a bit early to say I guess.
Really intrigued by the Supermono class bike, something the average rider could get involved in.
When does your racing season start?
Good Luck
Cheers spanner
Thanks, Spanner!
Every first time I take out the bike before the season, it feels like a rocket! This time was no different. Although with 14,0-14,5 in compression ratio it sounds a bit more "angry" this time. The large duration cams and high lift do make the front wheel light, which pleases an old man! The first race is in the end of May, in Finland (600km drive in Sweden, 12 hour ferry, 300km drive in Finland). I hope to have my new mobile home-project ready by then. Oh yes, the bike sorted out as well...
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February 13th, 2011, 09:22 AM   #96
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Re: Billet cylinder head

it is that your project progresses!
good luck for the final mapping, will be the longest ...
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February 13th, 2011, 09:31 AM   #97
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Re: Billet cylinder head

I am well eager to see the results to that dyno run Dr C, you are indeed a very special kind of madman
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February 13th, 2011, 11:08 AM   #98
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Re: Billet cylinder head

Originally Posted by upshegoes
I am well eager to see the results to that dyno run Dr C, you are indeed a very special kind of madman
"Thank you - thank you very much!"
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February 13th, 2011, 04:09 PM   #99
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Re: Billet cylinder head

Originally Posted by Dr_C
Also there was a difference between the AFR-value the O2-sensor showed on the display and what was registered on the Microsquirt. So, I packed up and did my home work more thorough. After some tests in setting up the O2-sensor box and the Microsquirt (TunerStudio) I got corresponding AFR-values on both system.
Was that an earthing issue between the Innovate and Megasquirt. Had a similar problem with Autronic ECU and Innovate LC1, the Autronic O2 input had a signal ground reference that was not tied to Chassis Ground, and the Innovate O2 Output uses Chassis Ground.

What method do you use to pick the Timing settings in the Megasquirt Timing Map? I guess you are using TPS and RPM in the Timing Map? Just wondering if you use some sort of Knock Detector or some trick on the dyno?

What are you using to control fuel surge in the tank?

Don't worry about answering if you are too busy with your project DR_C, I am just curious. Would like to see more videos of the bike they were great.
Good luck Dr_C
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February 14th, 2011, 12:38 PM   #100
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Re: Billet cylinder head

Originally Posted by Davo
Was that an earthing issue between the Innovate and Megasquirt. Had a similar problem with Autronic ECU and Innovate LC1, the Autronic O2 input had a signal ground reference that was not tied to Chassis Ground, and the Innovate O2 Output uses Chassis Ground.

What method do you use to pick the Timing settings in the Megasquirt Timing Map? I guess you are using TPS and RPM in the Timing Map? Just wondering if you use some sort of Knock Detector or some trick on the dyno?

What are you using to control fuel surge in the tank?

Don't worry about answering if you are too busy with your project DR_C, I am just curious. Would like to see more videos of the bike they were great.
Good luck Dr_C
No earthing issue. After I upgraded the firmware in the Microsquirt, I lost the calibrations, but even after that was corrected, there still was appr. 2 steps difference on the AFR-gauge (LC-1) and what was registered in the EFI. For some reason the default setups didn't work anymore. I had to set up a custom signal from LC-1 and an equal custom setup in TunerStudio. Then it worked!

I'm currently using Alpha-N (TPS) setting for load sensoring on both fuel and timing map. I have no knock sensor installed in the system, but we'll first see if knocking can be detected at all with hand held sensor. I keep my mind open when it comes to the benefit of knock detection.

Fuel surge? My english skills may very well be playing me right now. Do you mean how I make sure the pump allways have proper access to fuel, during braking and acceleration?

With a little luck there will be a video from the dyno on Sunday!
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