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-   -   1998 311 Fastech speed with 310mpi's (https://www.offshoreonly.com/forums/formula/151942-1998-311-fastech-speed-310mpis.html)

FASTTIMES 02-21-2007 11:54 AM

1998 312 Fastech speed with 310mpi's
 
What speeds should be expected out of a 1998 312 Fastech with 310 mpi's ? And what pitch 4 blades came from the factory?
Thanks!

t500hps 02-21-2007 01:26 PM

Is this a 1998 or a 312 (not 311)?

I just sold a 1998 312 with every factory option including a Cruisair A/C I installed under the V-berth.

A 1998 312 (single stepped hull) with 502 mags hits 70 all day, and 72-73 under good conditions. With 310HP I expect that boat to run low 60's and maybe hit 65 at best. (all GPS speeds)
Boat should have 1.65 bravos and spin 28 4 blade bravos I'm guessing (mine had 30's)

FASTTIMES 02-21-2007 01:41 PM


Originally Posted by t500hps (Post 2034060)
Is this a 1998 or a 312 (not 311)?

I just sold a 1998 312 with every factory option including a Cruisair A/C I installed under the V-berth.

A 1998 312 (single stepped hull) with 502 mags hits 70 all day, and 72-73 under good conditions. With 310HP I expect that boat to run low 60's and maybe hit 65 at best. (all GPS speeds)
Boat should have 1.65 bravos and spin 28 4 blade bravos I'm guessing (mine had 30's)

The boat is a 312, my mistake.
Thanks for this info--

Magicfloat 02-21-2007 04:59 PM

t500hps info is 100% correct,as always:drink: A 312/7.4 is a nice ride and currently a very good value.

handfulz28 02-21-2007 05:19 PM

Wow, it'll hit the 60s with only 310hp 7.4s? Maybe the 1.65 and 28p help it a bit?
I'm just jealous...:D


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