1975 Mandella Flatbottom Jet

  • 13 Replies
  • 542 Views

JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« on: April 13, 2019, 10:10:11 AM »
I picked up a '75 Mandella flatbottom jet at the end of last year. It was last registered in '05. It sat covered, but water got in the boat and unfortunately the motor.

Lee (69Kona) is building the motor and pump for the boat. Hopefully he can chime in on the specifics of the motor build.

So far I've stripped the interior and most of the old rigging from the boat. The plan is:

Bring back the shine of the floors.

Replace the fiberglass tanks with aluminum or stainless.

Repair the interior wood since the material still in excellent shape.

Re-rig the boat as clean as possible.

The motor parts were polished at one point, but after sitting for fourteen years outside they were in sad shape. My focus on this project lately has been painting and polishing all the parts going back on the motor.

Next up is fiberglass work! One fuel tank is out. They laid these tanks up thicker than some boats I've seen!

The pics below are from the day I brought it home.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app




JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #1 on: April 13, 2019, 10:39:46 AM »
Here are some pics of when it was in one piece. Anyone recognize where they are on the water? It's The Cove (formerly Riviera) in Blythe. I think it's pretty cool this boat was used on a stretch of river I frequent.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

69kona

  • Join Date: Mar 2015
  • Location: hesperia
  • *
  • Hero Member
  • *****
  • Posts: 938
  • Karma: +13/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« Reply #2 on: April 13, 2019, 11:36:29 AM »
The motor is .030 over .
Zero decked the block
Milled the G heads for smaller combustion chambers
I went to a 45* seat angle instead of the stock 30*  on the valve seats and put the big valves and isky valve springs for the comp cam 292
Forged pistons 10:1 compression
Oiling mods
Balanced the rotating assembly
Motor will make some killer torque


Sent from my iPhone using SoCal Jet Boats mobile app

08chevyguy

  • Join Date: Dec 2015
  • Location: st.peters Missouri
  • *
  • Hero Member
  • *****
  • Posts: 971
  • Karma: +33/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« Reply #3 on: April 13, 2019, 03:04:38 PM »
Neat boat. Looking forward to watching the progress

Sent from my SM-J727T using SoCal Jet Boats mobile app


JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #4 on: April 13, 2019, 04:08:45 PM »
Here's some before and after on the motor parts. Whatever I couldn't polish I painted.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


TrollerDave

  • Join Date: Feb 2008
  • Location: Chino,CA
  • *
  • Hero Member
  • *****
  • Posts: 1,050
  • Karma: +25/-0
    • View Profile
  • Liked:
  • Likes Given: 37
« Reply #5 on: April 14, 2019, 12:18:58 AM »
Cool looking boat. How do these ride?

Be careful when tightening those valve covers. I have the same ones and snapped that bolting flange real easy.

Looking forward to see how it turns out.


Sent from my iPhone using SoCal Jet Boats

JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #6 on: April 14, 2019, 09:11:53 AM »
Cool looking boat. How do these ride?

Be careful when tightening those valve covers. I have the same ones and snapped that bolting flange real easy.

Looking forward to see how it turns out.


Sent from my iPhone using SoCal Jet Boats
Thanks for the heads up. I'd be bummed after all the time I spent on them!

I've talked to a couple guys that owned a Mandella flat.  They don't handle like a typical jet, but nothing weird. We shall see!!

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #7 on: April 15, 2019, 04:53:28 PM »
I pieced together a solid ignition system. I had the 6AL box left over from an old motor and found a good deal on the distributor.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #8 on: April 18, 2019, 03:41:48 PM »
Progress.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


TrollerDave

  • Join Date: Feb 2008
  • Location: Chino,CA
  • *
  • Hero Member
  • *****
  • Posts: 1,050
  • Karma: +25/-0
    • View Profile
  • Liked:
  • Likes Given: 37
« Reply #9 on: April 18, 2019, 05:29:05 PM »
Progress.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app
Did you do the polishing yourself? If so, great job.


Sent from my iPhone using SoCal Jet Boats mobile app

JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #10 on: April 18, 2019, 11:23:28 PM »
Did you do the polishing yourself? If so, great job.


Sent from my iPhone using SoCal Jet Boats mobile app
I did. Thank you!

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


08chevyguy

  • Join Date: Dec 2015
  • Location: st.peters Missouri
  • *
  • Hero Member
  • *****
  • Posts: 971
  • Karma: +33/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« Reply #11 on: April 19, 2019, 04:22:36 AM »
Looks awesome

Sent from my SM-J727T using SoCal Jet Boats mobile app


JordanDangerfield

  • Join Date: Jul 2012
  • Location: Temecula
  • *
  • Hero Member
  • *****
  • Posts: 1,010
  • Karma: +41/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 1
« Reply #12 on: April 19, 2019, 06:09:30 PM »
69Kona and I did some jet boat things today...

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app


The_Dean_85

  • Join Date: Feb 2018
  • Location: Murrieta
  • *
  • Jr. Member
  • **
  • Posts: 75
  • Karma: +1/-0
  • Registered User
    • View Profile
  • Liked:
  • Likes Given: 0
« Reply #13 on: April 19, 2019, 09:36:27 PM »
Looks killer


Sent from my iPhone using SoCal Jet Boats

 


Website Security Test
Powered by EzPortal
Null

Website Security Test