Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   Formula (https://www.offshoreonly.com/forums/formula-36/)
-   -   Few Questions on 600 Powered 382 (https://www.offshoreonly.com/forums/formula/147507-few-questions-600-powered-382-a.html)

PremierPOWER 12-20-2006 07:12 AM

Few Questions on 600 Powered 382
 
Looked at a 382 with 600's yesturday. Owner was out of town so his mechanic was able to give us a ride. He had never driven the boat before. All he could get out of it was 67.9mph and ~4350rpm's. Water was veryy smooth. How fast should this boat top out at on smooth water? I know it probably does better in rough water, but I was hoping for atleast 80 in smooth. Boat has extension boxes with 5 blade props. Also has generator and A/C which add to the weight but couldnt hurt that much. 3/4 tank of gas

Magicfloat 12-20-2006 08:06 AM

Re: Few Questions on 600 Powered 382
 
Hopefully the guy is a better mechanic than boat driver :rolleyes: Low 80's easily,last one we sold with a lite load did 87 GPS under perfect conditions,but low 80's should be the norm.First one we sold did 83 GPS but maybe had a little more. :p

CObarry 12-20-2006 10:43 AM

Re: Few Questions on 600 Powered 382
 

Originally Posted by PremierPOWER
Looked at a 382 with 600's yesturday. Owner was out of town so his mechanic was able to give us a ride. He had never driven the boat before. All he could get out of it was 67.9mph and ~4350rpm's. Water was veryy smooth. How fast should this boat top out at on smooth water? I know it probably does better in rough water, but I was hoping for atleast 80 in smooth. Boat has extension boxes with 5 blade props. Also has generator and A/C which add to the weight but couldnt hurt that much. 3/4 tank of gas

If he didn't trim the drives at all those numbers are probably about right. If he hasn't driven a performance boat before he might not have even known to do it....

PremierPOWER 12-20-2006 02:00 PM

Re: Few Questions on 600 Powered 382
 
That was the thing, he said he used to race boats. Had never driven a 382 before though. Where should the boat be trimmed for ideal top end?

PremierPOWER 12-20-2006 02:03 PM

Re: Few Questions on 600 Powered 382
 
Also, when at speed I couldnt hardly hear an exaust tone at all. Heard the superchargers whine which was sweet, but I want more exaust rumble. Will replacing the muffled tips with straight tips help much? What exactly is the silent thunder thing and do all fastechs have it?

the duke 12-20-2006 02:25 PM

Re: Few Questions on 600 Powered 382
 

Originally Posted by PremierPOWER
That was the thing, he said he used to race boats. Had never driven a 382 before though. Where should the boat be trimmed for ideal top end?

Key in that sentence is "USED' to race. must have been the driver, not the sticks guy :drink:

Should be trimmed so the boat is making max speed for the rpm that you are running at. You said he only ran it to 4350 RPM. I forget the max RPM for the 600's, but its above 5000, so you were giving away 700 RPM at least, which is where your speed was.

Magic float will tell you for sure, but I thought that Formula stopped using Silent Thunder and went to mufflers. If it was really quiet, maybe he had the Captains Call closed?

Magicfloat 12-20-2006 02:37 PM

Re: Few Questions on 600 Powered 382
 
Silent Thunder was replaced by Corsa mufflers last year. Boat probrably has Capts Call that opens automatically at about 3000 rpm. You should hear the boat get louder just as it pops on plane.Just a thought,maybe find someone more knowledgable at the dealership. Most of us on OSO are happy to share what we know,but if you are going to spend big $ you should be able to lean on your dealer a little for info.Bet they have a Fastech oriented guy there :drink: If not,just ask away here,world of Formula knowledge on this site,and it's free. :D

Joe 12-20-2006 02:52 PM

Re: Few Questions on 600 Powered 382
 

Originally Posted by CObarry
If he didn't trim the drives at all those numbers are probably about right. If he hasn't driven a performance boat before he might not have even known to do it....

Mine ran 90 MPH at zero trim (no smart comments here guys... Cigarette was testing something! :eek: ).

JKoe

Joe 12-20-2006 02:52 PM

Re: Few Questions on 600 Powered 382
 

Originally Posted by PremierPOWER
That was the thing, he said he used to race boats. Had never driven a 382 before though. Where should the boat be trimmed for ideal top end?


Depends.... ITS/Boxes etc..... which configuration do you have?

Joe 12-20-2006 02:55 PM

Re: Few Questions on 600 Powered 382
 

Originally Posted by the duke
Key in that sentence is "USED' to race. must have been the driver, not the sticks guy :drink:

Should be trimmed so the boat is making max speed for the rpm that you are running at. You said he only ran it to 4350 RPM. I forget the max RPM for the 600's, but its above 5000, so you were giving away 700 RPM at least, which is where your speed was.

Magic float will tell you for sure, but I thought that Formula stopped using Silent Thunder and went to mufflers. If it was really quiet, maybe he had the Captains Call closed?

5400 max rpm. you obviously have a prop, drive X height, trim etc.. problem... doubt ANY mufflers would kill that much speed/RPM.

Post all the info:
props, x dimension, RPM at 3k, 3500, 4k, etc... and someone will most likely be able to point you in the right direction.

the duke 12-20-2006 03:06 PM

Re: Few Questions on 600 Powered 382
 

Originally Posted by Magicfloat
Silent Thunder was replaced by Corsa mufflers last year.

Did Formula have a specific reason for doing this change? Quieter/cheaper/better? Are they full time mufflers, or do they "open" like some others?

Magicfloat 12-20-2006 04:00 PM

Re: Few Questions on 600 Powered 382
 
Seriously doubt there is a problem other than an inexperienced driver :cool: Formula went to mufflers because the Silent Thunder lower pan would not fit on boats with boxes and they wanted consistency thruout the line. Corsa mufflers have about the same sound with no added stern weight(water fills the silent thunder)They dont open,it's either thru the props(Capt's Call closed) or thru the mufflers. Formula does not like loud boats and I commend them for that. If you want it loud,replace the mufflers with straight thru tips,your call,but realize you cannot go thru the props at speed because they open automaticaly to eliminate backpressure.

PremierPOWER 12-20-2006 10:00 PM

Re: Few Questions on 600 Powered 382
 
http://adcache.boattraderonline.com/6/6/0/86086260.htm

Here is the boat..... have some picts on my camera that we took of it, will post once I upload them to my computer

dukenrock 12-20-2006 10:11 PM

Re: Few Questions on 600 Powered 382
 
That's not a bad price for an '05 with 600's. I think MajicFloat also has a 382 with 600's. It's an '06 with the Spider graphics. Also has a trailer. May want to check it out. He'l show you how to make a 600 run!

t500hps 12-20-2006 10:15 PM

Re: Few Questions on 600 Powered 382
 
PP:
If you like the one Robert (MagicFloat) has, get a price from him. I promise NO one can beat his integrity and commitment to customer service!

t500hps 12-20-2006 10:18 PM

Re: Few Questions on 600 Powered 382
 
1 Attachment(s)
Here it is: It's an 07
http://www.boattraderonline.com/dealer.html?736250

ThirdBird 12-20-2006 10:24 PM

Re: Few Questions on 600 Powered 382
 
Add says "extension boxes with Captain's Call". That boat should have trimmed up fine and ran up to the requisite RPMs. I think the rest of the guys here are right, the "used to be racer" wasn't racing these kinds of boats.

Boat looks nice. For that kind of cash, I would be test driving it myself.

Unless there is something drastically wrong with those engines, that boat should spin up much better than what you experienced.

PremierPOWER 12-20-2006 11:22 PM

Re: Few Questions on 600 Powered 382
 
The boat is kept at a boat condo type place. You tell them when you want it launched, and they launch it. Also wash, wax, and flush when done. The owner was out of town and had the storage places mechanic give us a ride. We wouldnt have wanted to drive it without the owner there in the first place. He also plugged in his lap top and each engine showed about 3 hours of 5000+ RPM history so its obviously been there. If we end up with this one, we'll be sure to ride with the owner first

t500hps 12-29-2006 10:09 PM

Re: Few Questions on 600 Powered 382
 
Beautiful boat, Congrats.
I've got an 02 with the same interior less genset. My old motors were 800+, new motors should be about 650. (was running 95+ on GPS)

Expensive Date 12-29-2006 11:46 PM

Re: Few Questions on 600 Powered 382
 
Congratulations, Now while you are waiting go to Tres Martins high performance driving school especialy if you have never had a twin step boat before

kjm5125 12-30-2006 09:00 AM

Re: Few Questions on 600 Powered 382
 
You got a very good deal! Congratulations!

PremierPOWER 01-30-2007 12:45 PM

Re: Few Questions on 600 Powered 382
 
I Have some picts to post but it wouldnt let me post a URL until I have 15 posts, and I'm not on my computer that has the picts stored so I will post later

The only performance boat we have experience with is our 22 ft Donzi. Its got 500+hp with a blackhawk surface drive (limited edition) so it is a handful, but I'm sure much different than a twin engine stepped hull boat. We will be taking the off shore school at some point. Any tips for us on driving our new boat? We didnt have a vehicle capable of towing it so we also got a 2007 Chevy 3500 dually with a 6.6L duramax. Hopfully will be picking the boat up from stoarage around spring break time after our Myco trailer is finished being made

cuda 01-30-2007 03:54 PM

Re: Few Questions on 600 Powered 382
 
If you can drive a Blackhawk, you can drive anything.


All times are GMT -5. The time now is 02:02 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.