anyone DIY 540 build up?
#11
Registered
Re: anyone DIY 540 build up?
i base that on my engine...
merlin2 540 ci block
9/4/1 comp
canfiled 310 cnc'd chamber heads
merlin intake
950 hp carb
crane 731 cam 587/610
stainless marine manifolds
dynoed with flame arrestor, sea pump, alternator
here's the dyno sheet ,
if i had cmi's , spacer, dominator, and a custom cam the #'s may be somewhat larger , but i don't belive that the above engine could gain 119 more hp total.
ie "giving dyno".
merlin2 540 ci block
9/4/1 comp
canfiled 310 cnc'd chamber heads
merlin intake
950 hp carb
crane 731 cam 587/610
stainless marine manifolds
dynoed with flame arrestor, sea pump, alternator
here's the dyno sheet ,
if i had cmi's , spacer, dominator, and a custom cam the #'s may be somewhat larger , but i don't belive that the above engine could gain 119 more hp total.
ie "giving dyno".
#12
Platinum Member
Platinum Member
Re: anyone DIY 540 build up?
Originally Posted by open72
i base that on my engine...
merlin2 540 ci block
9/4/1 comp
canfiled 310 cnc'd chamber heads
merlin intake
950 hp carb
crane 731 cam 587/610
stainless marine manifolds
dynoed with flame arrestor, sea pump, alternator
here's the dyno sheet ,
if i had cmi's , spacer, dominator, and a custom cam the #'s may be somewhat larger , but i don't belive that the above engine could gain 119 more hp total.
ie "giving dyno".
merlin2 540 ci block
9/4/1 comp
canfiled 310 cnc'd chamber heads
merlin intake
950 hp carb
crane 731 cam 587/610
stainless marine manifolds
dynoed with flame arrestor, sea pump, alternator
here's the dyno sheet ,
if i had cmi's , spacer, dominator, and a custom cam the #'s may be somewhat larger , but i don't belive that the above engine could gain 119 more hp total.
ie "giving dyno".
Last edited by articfriends; 12-18-2005 at 06:03 PM.
#14
Registered
Re: anyone DIY 540 build up?
no , not trying to down anyone . just a observation , yes , i was not looking for top end hp. more low end than anything , old cigarettes are not light by any means. i enjoy more of on/off throttle in crushing waves, if i wanna go fast , i have the wrong boat..my goal was to have 600lbs thorugh useable wot rpm range.
(both combo's are low on comp needed to make better power)
smitty , i read your posts on here , u know your chit..
i'm not knocking or looking for argument ,and i'm no engine builder,you calculated difference in head flow, i understand that a 1050 , cmi's, little different cam , will make some added hp. but with 13.65% in flow i still don't see 119hp?
i also understand that many people dyno with no accessories and use the headers at the dyno room = bigger #'s.. but that's not what's in the bilge.
(both combo's are low on comp needed to make better power)
smitty , i read your posts on here , u know your chit..
i'm not knocking or looking for argument ,and i'm no engine builder,you calculated difference in head flow, i understand that a 1050 , cmi's, little different cam , will make some added hp. but with 13.65% in flow i still don't see 119hp?
i also understand that many people dyno with no accessories and use the headers at the dyno room = bigger #'s.. but that's not what's in the bilge.
#15
Registered
Re: anyone DIY 540 build up?
Originally Posted by open72
that's a very "giving dyno" with those #'s....
650 - 700 hp is not out of reach. Compression ratio could also be increased and still run pump gas.
#16
~~~~
Charter Member
Re: anyone DIY 540 build up?
I also understand that many people dyno with no accessories and use the headers at the dyno room = bigger #'s.. but that's not what's in the bilge.
True True.
Open,
Are you pushing that Cig with one 540? I've always been facinated with the old Cig 28's like yours.
Russ
True True.
Open,
Are you pushing that Cig with one 540? I've always been facinated with the old Cig 28's like yours.
Russ
#17
I hate the winter!!
Platinum Member
Join Date: Jul 2001
Location: long island, new york
Posts: 2,707
Likes: 0
Received 0 Likes
on
0 Posts
Re: anyone DIY 540 build up?
Maybe I should have stated that when my motor was on the dyno, it had no accessories and dyno headers. Maybe I am wrong, but I dont see a big difference between dyno and CMI headers. There will be power loss with the accessories, dont know exactly how much. Not 100 h.p. for sure. I can say that I built this motor myself, I know exactly what is in there. I can also say with confidence that it was dynoed at a very reputable engine shop here on Long Island, New York. I wont speculate as to what type of dyno they have , because I dont know. For those of you who are from the area and may know of Lab Machine in Lindenhurst, this motor was dynoed there by Lee.
Russ,
Is that graph a comparison of my motor to yours? It looks like it is to me. I remember yours making more power than mine.
Vinny
Russ,
Is that graph a comparison of my motor to yours? It looks like it is to me. I remember yours making more power than mine.
Vinny
Last edited by Vinny P; 12-18-2005 at 07:42 PM.
#18
Re: anyone DIY 540 build up?
Zimm17, Here is my dyno. runs 80+ @5,600rpm all day. With more head work and different cam it will run faster. I'll be switching to a larger pitch prop in the spring. Talk to Mike at http://www.roccardmarineengines.com/
#19
Registered
Re: anyone DIY 540 build up?
Originally Posted by RLW
I also understand that many people dyno with no accessories and use the headers at the dyno room = bigger #'s.. but that's not what's in the bilge.
True True.
Open,
Are you pushing that Cig with one 540? I've always been facinated with the old Cig 28's like yours.
Russ
True True.
Open,
Are you pushing that Cig with one 540? I've always been facinated with the old Cig 28's like yours.
Russ
will be , i had a 420hp before ,did 54-58 , not too bad . the plus - in this hull - doesn't have all of that deck - being that it's "open". i have not installed the engine, if you look at the date of the dyno sheet it was friday before the storm f'd everything up down here . i will start a thread when i get back to it. i'm dealing with our first baby 4.5 months and is whipping our azzes..on top of our small town turning into new orleans overnight , or so it seems..
checkmate-
i am not knocking your engine , or you building it yourself, or the parts in it.
dyno headers do give best #'s. throw on the raw pump , arrestor with proper amount of mesh , alternator ,etc and you start losing #'s pretty fast. that's all. hence "giving".
smitty , do you have a break down of how much power those parts rob?
down here engines are dynoed with exhaust and everything else to make it work ,giving totally different #'s. what's in the bilge is in the dyno room for each specific engine.
no offense intended..
i belive that the starter of the thread can get 550hp out of his 454 personally. alot of good threads on OSO on how to get that done with 454 cubes..
#20
I hate the winter!!
Platinum Member
Join Date: Jul 2001
Location: long island, new york
Posts: 2,707
Likes: 0
Received 0 Likes
on
0 Posts
Re: anyone DIY 540 build up?
open72,
No offense taken, we are just discussing things here. The purpose of coming to this site is to learn something.
No offense taken, we are just discussing things here. The purpose of coming to this site is to learn something.