| OSO Sponsor |
 |
| OSO Sponsor |
|
|
|
|
|
 |
|
05-05-2009, 06:42 PM
|
#1
|
|
NEED A BOAT NAME
 Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
Annoying Porpusing.........
Has anyone experienced the bow of their boat nose diving to the left under acceleration? Its a SS8M with a single BB Chevy. Just started doing it after installing a new engine. It made almost 700 F/P torque so I assuming thats the problem. It is also porpusing after 60 mph which it didnt do before. Both problems are very annoying and I need some advice on how to correct them......Thanks.
|
|
|
|
05-05-2009, 08:00 PM
|
#2
|
|
JC Performance Engines
 Gold Member
Join Date: Jul 2002
Location: Long Island, NY
Posts: 8,114
1995 Pantera 24SE - SOLD
|
have u talked to throttle up yet?
are your tabs even?
You may want to post this in the general forum to get a better response.
__________________
With great power, comes great responsibility.
WAS Powered by JC Performance & a roll of Duct Tape.
|
|
|
|
|
05-06-2009, 07:14 AM
|
#3
|
|
NEED A BOAT NAME
Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
Thanks Stormrider, I will do that. 
|
|
|
|
|
05-06-2009, 10:45 AM
|
#4
|
|
NEED A BOAT NAME
Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
I had put a call into BBlades. Dont mean to put you on the spot, but who do you prefer and why? PM me if you want. Would a shorty work instead of raising the drive? Prop work would stop the nose diving? Thanks for the advice.
|
|
|
|
|
05-06-2009, 10:52 AM
|
#5
|
|
Registered
Join Date: Nov 2003
Location: Lake Travis ,Texas
Posts: 1,384
1988 CARRERA SS8M / 509" / Bravo
|
ThrottleUp is no longer doing prop work on any props except
their own Throttle-Up in house made props,
at least that is what Julie emailed me.
Sounds like your drive is too low in the water.
|
|
|
|
05-06-2009, 11:48 AM
|
#6
|
|
NEED A BOAT NAME
Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
Yes , its a bravo 1. I think I will start by talking to someone about the prop first. Hopefully getting the nose diving situation taken care of, and then focus on the porpusing. Even trimming doesnt stop it. Im taking it out today and adding fuel to the boat. Only had 1/4 tank of gas when I tested it. Maybe more weight will help ?
|
|
|
|
|
05-06-2009, 11:54 AM
|
#7
|
|
Registered
Join Date: Aug 2003
Location: Boca Raton
Posts: 6,244
1982 Pantera 24sport
|
What prop are you using??
|
|
|
|
|
05-06-2009, 12:53 PM
|
#8
|
|
NEED A BOAT NAME
Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
Daredevil- Nose diving meaning the bow of the boat is leaning down and left. Ive tried correcting it with dropping right trim tab alittle, but it still wants to lean under acceleration. Like the torque of the motor is pushing the nose down and to the left, thats after I get through the porpusing.......Its really annoying.
|
|
|
|
|
05-06-2009, 12:56 PM
|
#9
|
|
NEED A BOAT NAME
Platinum Member
Join Date: Feb 2008
Location: Connecticut
Posts: 4,070
FORMULA 382 FASTECH
|
Im using a stock 28P Bravo 1. I think its alittle too big. the motor makes peak power at 5500 RPM, I can only push the boat to about 5200 rpm. Lab finish??????????
|
|
|
|
|
05-06-2009, 02:00 PM
|
#10
|
|
JC Performance Engines
Gold Member
Join Date: Jul 2002
Location: Long Island, NY
Posts: 8,114
1995 Pantera 24SE - SOLD
|
Step 1: Get brett on the phone!
__________________
With great power, comes great responsibility.
WAS Powered by JC Performance & a roll of Duct Tape.
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
