Welcome to HydrostreamForums.com
If you're not registered, please consider doing so. It's easy - just click the "Register" link at the top
right corner of the page. Our forum needs members like you to contribute to the site in order to survive.
We are a community of boat lovers and Hydrostream enthusiasts here; we are happy to help anyone
who may need advice or guidance for their 'Stream; and we encourage members to offer their advice
and guidance to others as well. Thank you for visiting our forums, and please register.
We're better than Facebook.

Registering only takes a few minutes and you can do so by CLICKING HERE

If you are a member, don't forget to log in to take full advantage of the forum.

still overheating

The place for mechanics, racers, or anyone seeking engine-related technical help.
User avatar

Topic Author
fla.viper
Regular
Regular
Posts: 107
Joined: May 07, 2011 3:00 pm
Location: daytona beach
Been thanked: 2 times

Re: still overheating

Post: # 17212Post fla.viper »

the water pickup seal worked. i now have 10-11 psi at idle. it drops to 7 as i rev it. not sure why? ive ordered a whole waterpump assemebly. might as well start with all new parts. ill have to weight till saturday for a test run, it gets dark at 6:00 when i get out of work. thanks for all the help and suport, mike
User avatar

transomstand
Hydrostream Addict
Hydrostream Addict
Posts: 420
Joined: Apr 07, 2009 6:50 pm
Location: Fairfield, CT
Been thanked: 9 times

Re: still overheating

Post: # 17213Post transomstand »

The poppet valve opens at about 1800 rpm, should drop the pressure about 10 psi
transomstand
Original owner 1975 Ventura II SE
User avatar

Topic Author
fla.viper
Regular
Regular
Posts: 107
Joined: May 07, 2011 3:00 pm
Location: daytona beach
Been thanked: 2 times

Re: still overheating

Post: # 17214Post fla.viper »

transomstand wrote:The poppet valve opens at about 1800 rpm, should drop the pressure about 10 psi
im not sure what a poppet valve is, what it looks like, or where it is. when it drops the pressure about 10 psi, does that mean it regulates the pressuer at constant 10 psi, or does it drop it 10 psi from where it is at 1800 rpm? does the pressuer change with rpm? what pressuer should i have while runninig? i dont know if it makes a differance, but here in florida most of us dont run t-stats.
tx mike

varmint1
Hydrostream Addict
Hydrostream Addict
Posts: 375
Joined: Jul 05, 2010 2:37 pm
Location: Deville, La.

Re: still overheating

Post: # 17215Post varmint1 »

When your running the lwp also forces water to the engine.

[ Post made via iPhone ] Image
81 Varmint 2.5 Mag 3
82 Vandal Merc 85
76 Viper Merc 150
84 Valero
User avatar

transomstand
Hydrostream Addict
Hydrostream Addict
Posts: 420
Joined: Apr 07, 2009 6:50 pm
Location: Fairfield, CT
Been thanked: 9 times

Re: still overheating

Post: # 17216Post transomstand »

fla.viper wrote: im not sure what a poppet valve is, what it looks like, or where it is. when it drops the pressure about 10 psi, does that mean it regulates the pressuer at constant 10 psi, or does it drop it 10 psi from where it is at 1800 rpm? does the pressuer change with rpm? what pressuer should i have while runninig? i dont know if it makes a differance, but here in florida most of us dont run t-stats.
tx mike
It drops it about 10 psi, to prevent excess pressure at high rpm. Thermostats regulate pressure in a stock motor, and should never be removed. Having no thermostats makes it extremely difficult to keep the block full.
transomstand
Original owner 1975 Ventura II SE
Post Reply

  • Random Topics
    Replies
    Views
    Last post