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-   -   496 exhaust on a 502 mpi (https://www.offshoreonly.com/forums/general-q/269188-496-exhaust-502-mpi.html)

hadleycat 02-09-2012 06:20 PM

Looks like the bracket will work. I would be interested in buying one from you Ray

T-RAV 02-09-2012 08:34 PM

I got mine on, I was able to use the oil bracket that was there. Now I am in the process of building brackets for ecm and shift cables. hadley I have a bracket that I will give to you if you want it, just cover the ride.

hadleycat 02-09-2012 09:12 PM

That would be great. how would you like to do it , paypal or I can mail you a check, let me know. zipcode is 48455

T-RAV 02-11-2012 12:25 PM

Hadley your pm is full. I just sent the part to you. Don't worry about shipping its not enough to mess with. Just pay it forward. Hope it works for you.

Travis

hadleycat 02-11-2012 04:19 PM

Thanks so much. Sure is alot of great guys on this website

hadleycat 04-15-2012 10:15 AM

Workin on the exhaust now. I am polishing the risers, Lot of work getting in all the tight spots. I also stripped the paint off the manifolds. They look pretty good without any polishing. I picked up used a remote filter mount off of a Merc. 420. Mounts to the back of the port head. Will need to get new oil lines made up. I cant seem to find a fitting that fits on the stock oil cooler. It is a male inverted flare. Going to mount the shift bracket to the transom. Will probably make some aluminum brackets to mount the module and electrical connectors to the manifolds. Excited to get on the water and see how much faster the boat is. Probably at least 6 mph with the new manifolds

Raylar 04-15-2012 10:42 AM

Nice to hear your project. I would not advise getting to over excited about seeing a +6mph speed increase alone from an exhaust upgrade alone, kinda think you should be thrilled to see 2-3 mph if you are lucky enough to achieve that though.

Best Regards,
Ray @ Raylar

hadleycat 04-15-2012 12:06 PM


Originally Posted by Raylar (Post 3663920)
Nice to hear your project. I would not advise getting to over excited about seeing a +6mph speed increase alone from an exhaust upgrade alone, kinda think you should be thrilled to see 2-3 mph if you are lucky enough to achieve that though.

Best Regards,
Ray @ Raylar

Thanks Ray. I was only kidding about the 6 mph. I would be happy to see any gain. I am guessing that I will be gaining about 15 horsepower, What do you think?

Raylar 04-16-2012 10:18 AM

You're close

Best Regards,
Ray @ Raylar

hadleycat 05-12-2012 08:21 AM

Took the boat out today with the new exhaust. Gained 1 mph. Which I am happy with but I have a new problem now. I burnt a hole thru the top of the starboard exhaust hose. The 496 exhaust is about 2 to 3 inches taller than the 454 exhaust which was not a problem for the stock rubber hose to bend that far. Apparently it was to much of a bend to not burn thru. Still trying to figure out a solution to this problem without spending another $500 on silicone hose or custom adapters. I may cut and weld some aluminum tubing to compensate for the offset.


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