Sent 05 Ex to RF Powerboats
#512
Registered
Joined: Dec 2011
Posts: 32
Likes: 0
Real Fast Marine is now Fountain Performance Marine.
We want to extend our best wishes to those directly involved with this 42 project......A new year and a boat that performs better than new.....we are excited about the progress and the potential of this 42......it is going and to be fast and reliable......we expect to be posting fantastic final performance results with rock solid engines and outstanding performance....stay tuned.....and we wish everyone else following this thread a Happy New Year and please call us if we can help you with your boating needs
We want to extend our best wishes to those directly involved with this 42 project......A new year and a boat that performs better than new.....we are excited about the progress and the potential of this 42......it is going and to be fast and reliable......we expect to be posting fantastic final performance results with rock solid engines and outstanding performance....stay tuned.....and we wish everyone else following this thread a Happy New Year and please call us if we can help you with your boating needs
#514
Registered
Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
Not much to take pics of unless you want to see my pretty face
I did flow the heads and wasn't exactly impressed. They were flowed at 28" on a 4.500 bore fixture and no pipe. What I can see of the port work looks real nice. We need to clean all of the carbon deposits out of the runners and have a good look at them to see if there is anything left in them. The numbers are as follows:
Intake:
.200-148 cfm
.300-215
.400-267
.500-302
.600-332
.700-349
.800-358
Exhaust:
.200-130 cfm
.300-159
.400-185
.500-211
.600-231
.700-247
.800-257
Eddie

I did flow the heads and wasn't exactly impressed. They were flowed at 28" on a 4.500 bore fixture and no pipe. What I can see of the port work looks real nice. We need to clean all of the carbon deposits out of the runners and have a good look at them to see if there is anything left in them. The numbers are as follows:
Intake:
.200-148 cfm
.300-215
.400-267
.500-302
.600-332
.700-349
.800-358
Exhaust:
.200-130 cfm
.300-159
.400-185
.500-211
.600-231
.700-247
.800-257
Eddie
#516
Registered
Joined: Apr 2009
Posts: 1,852
Likes: 1
From: Denmark and hopefully some place nice
Not much to take pics of unless you want to see my pretty face
I did flow the heads and wasn't exactly impressed. They were flowed at 28" on a 4.500 bore fixture and no pipe. What I can see of the port work looks real nice. We need to clean all of the carbon deposits out of the runners and have a good look at them to see if there is anything left in them. The numbers are as follows:
Intake:
.200-148 cfm
.300-215
.400-267
.500-302
.600-332
.700-349
.800-358
Exhaust:
.200-130 cfm
.300-159
.400-185
.500-211
.600-231
.700-247
.800-257
Eddie

I did flow the heads and wasn't exactly impressed. They were flowed at 28" on a 4.500 bore fixture and no pipe. What I can see of the port work looks real nice. We need to clean all of the carbon deposits out of the runners and have a good look at them to see if there is anything left in them. The numbers are as follows:
Intake:
.200-148 cfm
.300-215
.400-267
.500-302
.600-332
.700-349
.800-358
Exhaust:
.200-130 cfm
.300-159
.400-185
.500-211
.600-231
.700-247
.800-257
Eddie



It might have been mentioned, but what heads are we talking about with these numbers? I would think that heads for this size motor should flow 400cfm+ @ .700+ on the intake for that kind of power.
Last edited by A.O. Razor; 01-08-2012 at 04:51 PM.
#517
Registered
Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
They are the stock 525 heads with some port work. I'm not sure who did the port work but from what I understand,Tyler sent them out to be done. I could be wrong, but that's what I have heard. It really doesn't matter though. I haven't really had the chance to clean the ports out really good and see the port work. However, from what I see it looks pretty good. They just didn't flow very good.
We are in the process of figuring out what to do now.No one is skimping at this point. We are just trying to figure out what it's going to take to make their hp goal without needlessly spending money. They have spent quite a bit up to this point. The first step was to see what the heads would flow and go from there.
Eddie
We are in the process of figuring out what to do now.No one is skimping at this point. We are just trying to figure out what it's going to take to make their hp goal without needlessly spending money. They have spent quite a bit up to this point. The first step was to see what the heads would flow and go from there.
Eddie
#518
Registered
Joined: Oct 2005
Posts: 5,825
Likes: 612
From: Clarkston, Michigan
Thanks Ed, I would have thought that 525 heads would flow better than that too, even stock. Everyone is anxious to see the end of this project and hopefully get the owner a full, trouble free, season!
#519
We are wanting to go with better heads....thinking about selling the 525 heads.
#520
Registered

Joined: Jul 2009
Posts: 826
Likes: 56
From: Fredericksburg, VA



