articfriends
 

i just wanted to give you props(not the king we put on out drives) i lurk a lot on the site, read a lot and call bs on a lot of stuff i read. you are one of the people who always has good ideas for people and steps up to tell it like it is. keep up the good work. i am also interested more in your motor setup. i think we have simmilar setups and would like to compare "real" numbers which i know i can do with you.

my setup is a follows

540 30 over so a 548
dart pro 1 335 cc cnc ported alum. heads with inconal exhaust valves and manely extreme duty intake valves
custom ground roller blower cam
roller rockers
JE blower pistons 8.25 to 1
msd dist locked at 30 deg.
m3 procharger with 4" pully making 9-10lbs at 5600
single nickerson built 750 blow through carb
500hp dart intake
cmi 500hp headers
msd soft touch rev limiter
bravo xz (1.5)
32 pitch bravo 1
imco duel ram fully hydr. steering
this setup is on a 3600lb 25' switzer v bottom.

Re: articfriends
 

hmmmmmm no info?

Re: articfriends
 

Nice, what's the cam specs and do you run an intercooler, box or hat? What numbers does your boat run?

Re: articfriends
 

marty, yes it is a m3 procharger with intercooler, carb box. i will dig up the cam info i dont have it in front of me. the best the boat has run is 98.4 @5600 i have not had time to tweek anything to get into tripple dig but i think i can do it. my dyno sheet showed 945hp @5600 and 9 1/2lbs of boost.the highest torque was 923 lbs. when i ran the boat last at 98.4 i was only seeing about 8 1/2 lbs of boost so either the belt is slipping a little on top or i just cant build the same boost with the same pully on the dyno. i think if i can find that last lb of boost i might get into the very low tripple dig. who knows. i have been to bussy to really do anything with it. it would be nice to do it once.

Re: articfriends
 

Try re-posting with a subject line that reflects what you are asking for.

Re: articfriends
 

originaly i was just looking for member articfriends who i thought had a simmilar setup as mine

Re: articfriends
 

Nice setup. I would build one very similiar and like to make 1000HP and 1000TQ.

Re: articfriends
 

502,i am on vaction (boating in northern mi),i just spent 45 minutes typing out a real detailed answer on my set-up on my buddys laptop,submitted it and LOST IT!!!!PM me with a phone # and i'll give you a ring on the phonw in a day or two when i get home!Smitty

Re: articfriends
 

502 procharger,sounds like a pretty mean motor. My shortblock is real similar,i used a merlin block,all arp studs,hrc ultimate duty rods & crank,14 qt offshore pan,ati balancer. On the advice of tyler crockett i reused my merlin 320 heads i had on my 502,they have bowl work,inconel valves etc. He said in his experience dynoing supercharged motors that i would not gain more than 10-15 hp on dyno and would give up torque when not under boost.My cam is a hyd roller,just over 600 lift,228/238 at .050. I am running the stock 502 efi intake & plenum,the boat had previously run 79-80 mph w/502 and procharger,stock merc hyd roller,merlin heads,28 pitch merc prop,5200 rpm's. Directly off the dyno w/new 540 it would only run 75 or so,same prop but at 4800-4900!! I called him up,he reccomended more boost on phone. The timing curve his computer program uses pulls 1 1/2 degrees timing out for each lb boost,the 4" pulley that made 8 psi or so on 502 only made around 6 on dyno,i had wanted to try more timing on dyno,we had base timing set around 30 deg so under boost it was more like 21-22 degrees. He said it wouldn't be reliable with more timing (he would rather see something reliable than to have you blow it up),i upped base timing 4 degrees more after talking to kip at cam motion (who had ground cam for crockett), the boat picked back up to 80 mph so 700hp? I then dropped down to a 3.85 inch dia 12 rib pulley (i did try 3.85 8 rib but it was IMPOSSIBLE to keep it from slipping),i also dropped fuel pressure from about 55 base to 48 psi, i now get 82-83 or so out of boat 1/2 tk gas,4 people w/30 pitch lab running 5400 +/- 100 725-750 hp?best of 85.1 w/3.70 pulley&boat empty. I know the small cam , heads & injectors are holding me back from anymore power BUT in Crocketts defense the boat will idle at 675 rpm's thru a no-wake zone for 1 1/2 hours w/o loading up or stalling and has been reliable.I also realize i'm past the safe limits of my hull (2000 baja 272) so now i'm just trying to enjoy the boat the way it is!How much cam are you running/exhaust system,idle rpm's,etc?Before the end of season i am going to measure pressure drop acrossed the intercooler and am also going to try running a 32 pitch prop w/3.70 pulley around 5200 ,Smitty

Re: articfriends
 

smitty here is a copy of my dyno sheet, maybe it will help you figure out where you are not getting the power you want when you compare it to your sheet. the fuel "b" side lead fell off on this pull so double the fuel numbers and the boost number all the way to the right is boost when you cut it in half. no idea why it was setup that way just the way the dyno comp was setup.

http://www.hotboatpics.com/pics/data/500/1DSC04393.JPG

the motor idles beautiful trough no wake zones at about 750rpms in gear, i run a 32 bravo 1 so that is about perfect speed and rpm for no wake zones. i do not have my cam card in front of me but i will get it. do you have a 3.85 and a 3.70 12 rib pulley? i was going to order one or both to see if i can find that 1lb or 2lb i seem to be missing now that the motor is in the boat.

Re: articfriends
 

Hey 502ProCharger, don’t mean to jump in on your guys thread but your dyno sheet certainly helps me.
Sounds like a pretty familiar setup :)
Here’s mine if your interested.

548 c.i. GM block with all Crower internals (4.53 X 4.25).
JE –20cc blower pistons 8.5:1
ARP head and main studs
14-quart pan
Canfield 315 heads (fully worked by JimV)
Cometic head gaskets
Ferrea Special alloy valves
Crane hyd roller lifters
Roller Rockers
Crane 741 (236/244 112 .610/.632)
Single plane Brodix (Lingenfelter) port injected intake
1100 cfm throttle body with air cap
CMIs
M3 with 504 intercooler with 4.50” pulley makes ~7 lbs @ 5600-5700
Timing and A/F is controlled with FAST ECU and wide band O2 sensor. Timing is variable dependent on manifold pressure and rpm. (30* at 7 lbs and 5600-5700 rpm)
I've been estimating 825-850hp which looks to be close after looking at your sheet.

5000 lb 28 foot V with Max Machine upgraded XR drive runs 88 GPS with stock B1 30 at 5600-5700 rpm. This will improve if I see similar results as I did going to a P5-X at high altitudes.

Thanks for the great info!
Later,
Dave

Re: articfriends
 

Forgot a question....Is your cam a hydraulic or solid roller.
Thanks

Re: articfriends
 

Dave,who set-up program for your efi and where is your o2 sensor located?What lb per hr injectors are you running? If you look at the pic of my intercooler how is yours mounted in comparison?What kind of hull are you running and how fast was it with stock power?What kind of fuel pump and pressure are you running?I may change some stuff this winter if i pull motor out to freshen it (it really doesn't seem like i need to freshen it but i might).You are making excellent boost for only having a 4.5 pulley,are you sure its not reall 4.25 or 4.00?If you can,post a pic of your intercooler setup,thanks,Smitty

Re: articfriends
 

502 procharger,i am running a 3.85 12 rib and i have a 3.70 12 rib that i tried once and am planning to try again at the end of season with a 32 pitch prop. If the 3.70 works out i would be willing to send you the 3.85 to try (it would be the first or sec wk of sept). I am also going to do a boost pressure test measuring outlet boost of blower,outlet boost of intercooler and actual boost presure at intake. You guys are at sea level i assume,we are at 700 feet above so i am wondering why my boost is signifigantly lower,it isn't pressure drop acrossed the intercooler(we all have aw504's) i am wondering if the factory throttle blades to efi manifold are giving me a bigger drop than your carbs,Smitty

Re: articfriends
 

i just ordered the 3.70 and new belt today. 82 for pulley 61 for belt a little better then through procharger themselves. i am running a hyd. roller cam and cmi exhaust. just the stock 500hp cmi's. we are at sea level here in ny where i am. i was also thinking of checking my boost loss from the blower through the intercooler. i have a bunch of 90 deg bends and i assume that is killing me. i am still no not close to the m3 max rpm of 57000. i believe with the 4.0 pulley on now i am at like 49,000 so i have some room. i hope the 3.70 is not to much how much did you gain going from the 4.0 to the 3.85? another issue is i use a single carb and the 4" out of the intercooler gets dropped to like 3" or 3 1/2 inch before it gets to the carb box. i am sure that is huring me.

Re: articfriends
 

502,when i went from 4" to 3.85,i went from 6 psi or so at 5400 to 8psi or so at 5400,9-10 psi at 5800-6000 (when i run 28 pitch). I went from 3.85 for one day w/30 pitch to 3.70 and saw 10-12 psi around 5600. If your seeing 8-10 psi w/4 inch,you might see 14 psi w/3.70. Your seeing as much boost W/4 inch as i'm seeing w/3.85 so your carb box probably isn't as big of a restriction as my efi plenum and throttle blades,can't hardly wait to here what you gain w/the 3.70!! Smitty

Re: articfriends
 

Hey Articfriends,
I’ll try to answer your questions.
-I do all of my own ECU tuning via laptop.
-You can see the wide band O2 sensor in the starboard collector on the CMIs.
-72 lb injectors with an Aeromotive 1:1 fuel pressure regulator
-I’ve attached a picture of my ducting setup which is very similar to yours; all 4”
-Hull is a 5000lb 28’ V that ran 72-74 with the 540 naturally aspirated. Also at that time it had a slightly smaller cam and oval port Edelbrock heads.
-I run two fuel pumps; I run the mechanical pump that’s mounted with the sea water pump. (I use the stock armature housing but an upgraded Holley pump unit) This feeds a large Racor filter/separator (4” X 8”) Then I have the Aeromotive high-pressure pump drawing out of the Racor. Then the pump obviously goes to the rails. The regulator then dumps to a fuel chiller and back to the same Racor unit. It has worked flawless for several years and creates no issues with my dual tank setup. 43lbs to 50 under boost. I really don’t need the 1:1 regulator but it is what I had at the time. I have plenty of injector to overcome the need for more pressure.
-Yes, I make pretty good boost with a 4.5” pulley. I have a 4.25 that I run at our higher elevations and it makes 8-9 lbs at 5600rpm (at 5100 feet). It takes that 8-9 lbs to achieve a true 5.5-6 lbs of absolute pressure in the manifold at that elevation however. I still make substantially more power with 7 lbs at or near sea level. Altitude is tough!!!
I believe the reason I tend to make good boost with those pulleys is the ProCharger unit itself. As you can see by the picture the housing is a M4. This was what PC called the M3 for a short time just before they came out with the new M3 several years back. PC has told be that it was a hybrid during the change and it probably puts out closer to M4 boost levels.
Bottom line is it is not an apples to apples comparison with your M3s.

Let me know if I can answer anything for you.
Dave

Re: articfriends
 

502ProCharger,
If you don't mind, where are you buying your pulleys and belts?
Thanks,
Dave

Re: articfriends
 

nordic heat. i am getting my stuff from RW marine in ohio. talk to rob or kim. there number is 717-938-8545. tell them i turned you onto them, maybe i will get even better prices, lol. they are always cheeper then through procharger.

Brian Colombo

Re: articfriends
 

Smitty, **** i should have bought the 3.85 prob. procharger will ususaly take it back if it looks new within 30 days. they always have before. i will try it and if it is to much i will swap it for the 3.85. i need to get tripple dig. just once. lol

Re: articfriends
 

oh yeah i have never seen more then 8-81/2 lbs with that pully so maybe i will be ok, sometimes it is only like 7lbs. strange how it can change like that right?