AQ225E Rotor constantly burns up

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rleip21

Seaman Apprentice
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Oct 9, 2011
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33
Why would a rotor constantly burn up? If I use the boat like 2 times I have to replace it and the cap is perfectly fine.
Thanks,
Ryan
 
7

74bayliner

Chief Petty Officer
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Aug 23, 2011
Messages
607
Re: AQ225E Rotor constantly burns up

Haha yup :) try ridin it now that you adjusted the timing. good luck
 
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rleip21

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Re: AQ225E Rotor constantly burns up

Okay. Thanks again. Did not think that would cause it but I will put a new one in and run it. Thanks again. Also I put the timing at like 12 because I read you should advance it a little if you have a performance cam. Is that right or just run it and see what works best
 
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captmello

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Jun 30, 2008
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3,855
Re: AQ225E Rotor constantly burns up

I'd run it a 8 if that's what the book calls for. who said you have a high performance cam?
 
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rleip21

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Re: AQ225E Rotor constantly burns up

The guy I bought it from and i have the box with the old one in it so I know it is in there.
 
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captmello

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Re: AQ225E Rotor constantly burns up

rleip21 said:
The guy I bought it from and i have the box with the old one in it so I know it is in there.
Click to expand...

Does the box have the cam specs on it? If so, post them. Not to argue, but most marine cams are not really high performance, they are more similar to a pickup truck cam. Built for torque at lower RPM's.
 
M

Maclin

Admiral
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May 27, 2007
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6,761
Re: AQ225E Rotor constantly burns up

Makes me wonder what else about the engine is "high performance" and not stock, like distributor, coil ,etc. Is all the ignition stock as it came from Volvo?
 
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rleip21

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Oct 9, 2011
Messages
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Re: AQ225E Rotor constantly burns up

Edelbrock 2102 cam. High rise air intake. Electronic ignition conversion kit just gets rid of contacts and condesnsor. It had a msd coil but I put a stock one back in because I wasn't sure if that's what was burning up the rotor. Everything else is stock bu it might have been bored out when it was rebuilt. So what do you think about the timing and that cam?
 
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rleip21

Seaman Apprentice
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Oct 9, 2011
Messages
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Re: AQ225E Rotor constantly burns up

Thanks for the link. I read through the directions and it said to have the idle at 14 degrees. I think I have it set to about 12 or 13 so I will just try it out and move it a degree or two when I have it on the water to see what runs best. Thanks again for all the help. I really appreciate it.
Thanks,
Ryan
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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51,234
Re: AQ225E Rotor constantly burns up

your duration is a bit high on the cam, a bit more than most marine cams. I hope you have a thru-hull exhaust, as you will have reversion issues with 278 int./288 exh. duration. Generally with a flat tappet, the limit is 262/268 duration to prevent reversion.

with your timing changes, make sure you listen for pinging under acceleration. if you have any, back off the timing, or increase your fuel octane.
 
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rleip21

Seaman Apprentice
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Oct 9, 2011
Messages
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Re: AQ225E Rotor constantly burns up

No thru hull exhaust. But I will listen for a ping when I run it and retard the timing a little
 
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