How Much Boost????
10-08-2004 | 05:39 PM
#22
Platinum Member
Joined: Oct 2003
Posts: 788
Likes: 0
From: Townsville Australia
Re: How Much Boost????
Fastlane 40,Crate Gen VI 502's.8.75:1 ,5lb boost,850DP's,Aussie stainless exhaust,Weiand 177's,540 dyno HP.240 hours,not a problem.As a home engine builder and this type of set up where the guy at the wheel is the computer a exhaust mixture meter is invaluable.
10-08-2004 | 09:05 PM
#23
Registered
Joined: Sep 2003
Posts: 9,214
Likes: 5
Re: How Much Boost????
8.2 static compression
4-6 lbs boost
522 ci
Merlin heads 132cc's
Crane hydraulic roller
B&M 250
No Inter-cooler
300 plus hours
That's the power side of the engine
Here's the durability side
4340 billet crankshaft
Oliver billet rods
JE pistons
A.R.P fasteners
Merlin block
Machined by the best...Weston Machine
Assembled in a shop where time is not a problem...mine
4-6 lbs boost
522 ci
Merlin heads 132cc's
Crane hydraulic roller
B&M 250
No Inter-cooler
300 plus hours
That's the power side of the engine
Here's the durability side
4340 billet crankshaft
Oliver billet rods
JE pistons
A.R.P fasteners
Merlin block
Machined by the best...Weston Machine
Assembled in a shop where time is not a problem...mine
Last edited by CigaretteFirefox; 10-08-2004 at 09:23 PM.
10-08-2004 | 10:38 PM
#24
Registered
Joined: Jul 2003
Posts: 2,759
Likes: 1
From: Cypress, TX
Re: How Much Boost????
Originally Posted by MESA BALANCING
We have a customer who we build the engines for in a Daytona we run a 4.625 bore by 4.625 stroke the cyl heads are 125 cc and a flat top piston with one of our custom cams solid roller we run 9.5 lbs of boost with no inter cooler on 93 oct and run 119 mph at 5900rpm it is currently the fastest boat of its size in the Miami area. It has taken quite of work to make the combo work and its all in the cam we have had at least 5 cams before we had this one and I can tell you that the lobe sep has been the key. Ill give a clue its not from 110-114. Sincerely Laz Mesa
Roby
Last edited by robyw1; 10-08-2004 at 10:40 PM.
10-09-2004 | 09:17 AM
#25
Registered
Joined: Feb 2001
Posts: 1,849
Likes: 1
From: charlotte nc.
Re: How Much Boost????
Originally Posted by MESA BALANCING
We have a customer who we build the engines for in a Daytona we run a 4.625 bore by 4.625 stroke the cyl heads are 125 cc and a flat top piston with one of our custom cams solid roller we run 9.5 lbs of boost with no inter cooler on 93 oct and run 119 mph at 5900rpm it is currently the fastest boat of its size in the Miami area. It has taken quite of work to make the combo work and its all in the cam we have had at least 5 cams before we had this one and I can tell you that the lobe sep has been the key. Ill give a clue its not from 110-114. Sincerely Laz Mesa
04-15-2005 | 02:26 PM
#27
Registered
Joined: Feb 2001
Posts: 1,519
Likes: 31
Re: How Much Boost????
Numbers from a stock HP500EFI with Rtech system:
Static compression 8.8:1 (stock)
Boost pressure 7 psi
Displacement 502
Heads Stock GM iron unported
Cam Stock HP500EFI hydraulic roller
Intercooled Rtech supercooler
Type of S/C Vortech V-4
Engine Hours just installed
Static compression 8.8:1 (stock)
Boost pressure 7 psi
Displacement 502
Heads Stock GM iron unported
Cam Stock HP500EFI hydraulic roller
Intercooled Rtech supercooler
Type of S/C Vortech V-4
Engine Hours just installed
04-15-2005 | 02:42 PM
#29
Frank's Marine Service
Joined: Sep 2002
Posts: 11,959
Likes: 142
From: Elkton, MD
Re: How Much Boost????
Static compression 8.1:1
Boost pressure 5 psi
Displacement 580"
Heads Merlin 345 w/ 126 CC chambers.
Cam: Lunati Hyd. Blower Cam (.571 - .580) the rest I'm not sure
8-71 Hampton Blower underdriven 5%
766 hp and 753 lbs. torque at 4500.
I went with a conservative setup for longevity but I could always pump up the boost if I want more juice.
Boost pressure 5 psi
Displacement 580"
Heads Merlin 345 w/ 126 CC chambers.
Cam: Lunati Hyd. Blower Cam (.571 - .580) the rest I'm not sure
8-71 Hampton Blower underdriven 5%
766 hp and 753 lbs. torque at 4500.
I went with a conservative setup for longevity but I could always pump up the boost if I want more juice.
04-15-2005 | 04:24 PM
#30
1975 X-18 Donzi, Arneson
Joined: Oct 2000
Posts: 151
Likes: 0
From: CT
Re: How Much Boost????
8.45 CR
Boost 5.00" pulley 10 lbs on 92 oct
4.75" pulley 12lbs on 92 oct
4.25" pulley 15 lbs on 92 oct
max tq @ +- 5400rpm, hp +-6700 rpm
12.2 A/F, 34 deg. timing, 72lbs injectors run @ 60 psi
Displacement 434ci chevy small block
AFR 227cc Heads
Cam Solid Roller [email protected]: in 258, ex 264, lift .648", .667", 112cl
EFI F.A.S.T. ECU
Procharger M3 504 Intercooler
Engine Hours 50
Boost 5.00" pulley 10 lbs on 92 oct
4.75" pulley 12lbs on 92 oct
4.25" pulley 15 lbs on 92 oct
max tq @ +- 5400rpm, hp +-6700 rpm
12.2 A/F, 34 deg. timing, 72lbs injectors run @ 60 psi
Displacement 434ci chevy small block
AFR 227cc Heads
Cam Solid Roller [email protected]: in 258, ex 264, lift .648", .667", 112cl
EFI F.A.S.T. ECU
Procharger M3 504 Intercooler
Engine Hours 50
