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Dyno and pics of a SLIGHTLY modified 502 Mag MPI

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Old 05-03-2010, 10:05 PM
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That is correct. It is a hydraulic roller. Pretty mild one at that.
Eddie
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Old 05-03-2010, 11:05 PM
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Very Cool!!! I just turned 400hrs on my stock 502's. I'm thinking when re-build time comes a knocking this is the way to go. Thanks for sharing eddie
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Old 05-05-2010, 09:52 AM
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Thanks Baywatch. When they are ready for a rebuild, give us a call if we can help.
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Old 05-05-2010, 12:06 PM
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You ever do any of these with a FAST XFI setup or something similar? It seems like that would be nice for in boat tuning. I don't know how well that stuff will hold up to a marine environment though.
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Old 05-05-2010, 12:55 PM
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How much does something like that cost?
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Old 05-05-2010, 01:42 PM
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Originally Posted by jayhawk261 View Post
You ever do any of these with a FAST XFI setup or something similar? It seems like that would be nice for in boat tuning. I don't know how well that stuff will hold up to a marine environment though.
No, I don't for a few reasons. First, the Mefi has knock protection and the FAST, as well as most all aftermarket ecms, do not. Next, the Mefi can be serviced by any Merc. technician with a Merc scan tool. They do not have to bring it back to me if some problem arises with the ecm or a sensor. That pretty much never happens, but if it did, it wouldn't have to come all the way back to me. Their is a Merc. tech with a scan tool where ever there is water. They can treat it as if it were a 500 efi, 502 Mag, etc.
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Old 05-05-2010, 01:49 PM
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How much does something like that cost?
I sent you a pm. I don't like to advertise what my customers spend on an open forum. Their wives might be reading.
Thanks, Eddie.
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Old 05-05-2010, 07:34 PM
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Very Cool!!! I just turned 400hrs on my stock 502's. I'm thinking when re-build time comes a knocking this is the way to go. Thanks for sharing eddie
That Apache would rock-n-roll with that power!
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Old 05-05-2010, 10:36 PM
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That Apache would rock-n-roll with that power!
So would your Checkmate
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Old 06-02-2010, 07:36 PM
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No, the numbers are still real. I am not set up to run the sea water pump. Since it is a serpentine system, I have to remove the belt for everything. On the v-belt setups, I run everything but the pump. I am using city water to cool the engine, so the pump will suck more than the city water lines can supply and end up collapsing the hose. Ask me how I know!!
The engine was making 415 hp before I got my hands on it. It now makes almost 700 hp. Regardless of whether the accessories are turning or not, I think it is a pretty good jump in power. The customer seems to be pleased with it and that's what matters to me. I really wish I could run the accessories, but I can't at the moment. I will get it set up at some point.
Eddie

Boy, am I late to this party. May was a screwy month. I am extremely pleased with the results especially with the pos I shipped to him. Here are a couple of shots of the damage (thanks AZSM!!) that he was able to correct. Also the heads are only 310s and Eddie did a really good job on the port work.

Last edited by Advantage 27; 07-07-2011 at 09:21 PM.
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