SoCal Jet Boats

Discussion => The No Wake Zone => Topic started by: Micky on July 14, 2018, 08:47:20 AM

Title: New shinny stuf
Post by: Micky on July 14, 2018, 08:47:20 AM

So I just can't help myself had a couple of tunnel rams sitting around and decided to put on on the scorpion and see what it will do went from one 850cfm to dual 660s I am not to sure if it is going to help still has the large oval port heads 0490s head swap may be next. Trying to get a few more rpm  ... we will see


Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)

Title: Re: New shinny stuf
Post by: TrollerDave on July 14, 2018, 01:18:53 PM

You might not get that many more RPM's, and you'll use a lot more fuel, but tunnel rams just look so cool on a jet boat! Looking forward to see what difference it made.


Sent from my iPhone using SoCal Jet Boats

Title: Re: New shinny stuf
Post by: angermgmt on July 14, 2018, 01:48:09 PM

Hook a vacuumed gauge up before you switch and check the reading with your 850 at WOT. If it’s close to zero then the two 660’s may be overkill.


Sent from my iPhone using SoCal Jet Boats

Title: Re: New shinny stuf
Post by: Micky on July 14, 2018, 08:44:44 PM

Quote from: angermgmt on July 14, 2018, 01:48:09 PM

Hook a vacuumed gauge up before you switch and check the reading with your 850 at WOT. If it’s close to zero then the two 660’s may be overkill.


Sent from my iPhone using SoCal Jet Boats

Ya we ran some numbers we think it might help the motor is a 11.5 to one 427 currently making 585hp at 6200rpm we are only getting 5200rpm  out of it now running a cut A impeller as it was set up for much more HP the we may need to change out the heads to a set of rectangle port but they do look good


Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)