fastest stock 50hp motor to buy

[keakar]

ok, well the head is shot on my Suzuki df40 so I need a new motor.

that means Tuesday I'm off to go buy the tohatsu mfs40EFI and have them set it to the 50hp.

but I still don't understand exactly what they are doing that makes it change to a 50 hp

[CajunChristian]

Originally Posted by keakar

ok, well the head is shot on my Suzuki df40 so I need a new motor.

that means Tuesday I'm off to go buy the tohatsu mfs40EFI and have them set it to the 50hp.

but I still don't understand exactly what they are doing that makes it change to a 50 hp

Remove the restrictor plate.
D

[keakar]

Originally Posted by CajunChristian

Remove the restrictor plate.
D

oh ok, I thought only the 2 strokes had the restrictor plates?

so that's all they have to do is remove a restrictor plate? what about the timing, do they have to reset the timing as well?

im looking to buy the MFS40 and have it converted to 50hp and it sounds like this is this something I can do myself in 5 minutes or do you have to let them do it for warranty stuff.

haven't asked the local dealer about it yet but just wondering in case the local dealer doesn't want to do it for some reason, or is this a routine standard practice all dealers do?

[Gerald]

Originally Posted by keakar

oh ok, I thought only the 2 strokes had the restrictor plates?

so that's all they have to do is remove a restrictor plate? what about the timing, do they have to reset the timing as well?

im looking to buy the MFS40 and have it converted to 50hp and it sounds like this is this something I can do myself in 5 minutes or do you have to let them do it for warranty stuff.

haven't asked the local dealer about it yet but just wondering in case the local dealer doesn't want to do it for some reason, or is this a routine standard practice all dealers do?

When I bought my boat at Lake Area Marine, I got the impression that they remove the restrictor plates on all engines when they are delivered to the shop.

[CajunChristian]

Originally Posted by Gerald

When I bought my boat at Lake Area Marine, I got the impression that they remove the restrictor plates on all engines when they are delivered to the shop.

Yep, what he said. This has been a practice used for decades on both 2 and 4 stroke motors. It cost the manufacturer about .25 to have a restrictor made, much cheaper than a different set of carbs or different reeds.
As for the timing, on the new 40/50 Tohatsu, the ecu will adjust enough for the additional air/fuel introduced when removing the restrictor. You do nothing but run it.
D