The 200 is quite a bit different from the 225 not even including the actual ignition system. The cam is different and the rod coming off the timing arm is much smaller. See photo for the 200.
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| Computer ignition to 150 style, old yamaha http://www.hpbc.ca/viewtopic.php?f=19&t=3423 |
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| Author: | J.Kimmerly [ June 28th, 2016, 3:41 pm ] |
| Post subject: | Computer ignition to 150 style, old yamaha |
I've collected a bunch of ignition parts off a 1989 150 proV and i want to put them on my 225. It seems the mount location for the plastic cam that controls the carbs is in a different spot between the two. Does anyone have a picture of the throttle linkage on a 225 thats been changed over or is there a different plastic cam piece available to make this work? |
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| Author: | dubber [ June 28th, 2016, 7:25 pm ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
I have a 200 2.6 L without the computer and a 225 2.6 L with the computer. They were always that way from the factory though. If I get you a photo of each would that help you any? |
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| Author: | J.Kimmerly [ June 29th, 2016, 3:29 am ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
Ya a picture of the 200 would help. Thanks |
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| Author: | dubber [ June 29th, 2016, 8:36 am ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
The 200 is quite a bit different from the 225 not even including the actual ignition system. The cam is different and the rod coming off the timing arm is much smaller. See photo for the 200. [/URL]
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| Author: | DoktorC [ June 29th, 2016, 8:43 am ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
They're mounted different on vertical vs. horizontal reed fronts. You'll just have to mod the link rod that runs from the timing arm to the throttle cam I believe. |
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| Author: | J.Kimmerly [ June 30th, 2016, 12:14 pm ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
That picture helps. Dubber is there a spacer between the throttle lever and the block on your 200? Im guessing no. |
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| Author: | dubber [ July 2nd, 2016, 7:59 am ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
Sorry I missed this. I will look today. |
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| Author: | dubber [ July 5th, 2016, 9:17 am ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
Ok looking at the motor it is inconclusive. Looking at the parts fiche it appears there are washers for sure. Follow this link and click on diagram for what lurks behind. http://www.boats.net/parts/search/Yamah ... parts.html |
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| Author: | J.Kimmerly [ July 5th, 2016, 6:07 pm ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
Thanks for the exploded view. I had to space the throttle arm out about an inch and i used the longer 225 linkage to the throttle cam. Used the 225 throttle cam but had to file it down so the butterflys would fully close. Lost some travel but it works well. Didn't gain much from the change. |
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| Author: | dubber [ July 5th, 2016, 10:34 pm ] |
| Post subject: | Re: Computer ignition to 150 style, old yamaha |
From what I have always understood was that going to the older style ignition you can more easily adjust timing which when twinned with other mods allows you to make more power. I don't think an outright swap would do much of anything but rather lets you get serious. |
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