Harris Marine Forum - Show Us Your Project

VQ35 4.1 Scottcraft

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  1. vqjet
    vqjet

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    I love reading this (and other) web board, especially the projects section, so thought it only appropriate to share our build with you all. After 2 years of getting into trouble with the little Subaru jet boat, we decided it was time to upgrade. Having made lots of phone calls(thanks Mike for the advice) and spent hours(days/weeks)surfing the web we finally setteled on a boat and set up;

    4.1m Scottcraft with 12/13 deg dead rise

    7.5" 2 stage Scott jet with trim nozzle (manual trim and reverse)

    Nissan VQ35DE engine (out of a 2005 maxima)
    - 265 hp @ 5800RPM
    - 345 Nm @ 4400RPM
    - Continuously variable valve timing
    - Variable inlet manifold
    - Electronically controlled everything
    - All alloy construction

    Mike at Harris marine is going to be installing the Jet unit, making the engine mounts, heat exchanger and other various bits and pieces. We are going to install the Link computer and (try) get the engine running, build the trailer and do all the finishing work on the boat. I will try and update you on this project as things progress and post lots of pictures.

    Posted 15 years ago    #                  
  2. vqjet
    vqjet

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    Engine arrived last Wednesday, first thought that came to mind, "S*%t there a lot of wires!" This engine is a computer controlled master piece, there are solenoids controlling the intake manifold and valve timing, an electric motor to control the throttle and lots and lots of sensors. A lot of the wires will be cut out of the loom straight away, horn, ABS, traction control ect but there will still be quite a few left. We are planing on running this engine with a link G4 computer. It has an output to control the valve timing and intake solenoid. Has anyone had any experience with these motors or the Link G4? I'm sure I will need some advice once we start wiring it up.

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  3. vqjet
    vqjet

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    Variable inlet actuator, dropped the motor off to Mike on Wednesday afternoon so he could start constructing the mounts.

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  4. Tony737
    Tony737

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    Should do the business nicely.

    Posted 15 years ago    #                  
  5. vqjet
    vqjet

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    Yeah should go pretty well, what are your thoughts on the hull being 12/13 deg dead rise? The boat we have at the moment must have an 8 deg dead rise, pretty bumpy and is like driving a hover craft but love its shallow water ability. It seems like most people are going with 16 deg these days and getting stuck all the time.

    Posted 15 years ago    #                  
  6. Mike
    Mike

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    Pics are coming through of the hull build.....There is another Scott boat that has been done at 12 deg and I have recently spoken to the owner and he is very happy with the handling of the 12 deg, I havnt driven it but have driven the 14deg LS2 powered one we did and its only at the high end of the performance that I could tell it was 14deg 8O :wink:

    Posted 15 years ago    #                  
  7. vqjet
    vqjet

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    Yeah will be interesting to see how it goes. Cant wait to see the hull pictures.

    Posted 15 years ago    #                  
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    Anonymous



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    sounds like a great project, the 16 degree do go very skinny, as good or better than most so you would have no issue going less dead rise. might be harder ride in the chop though. the v6 will scream, have fun :)

    Posted 15 years ago    #                  
  9. vqjet
    vqjet

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    Pictures of the hull, almost finished! Getting itchy feet, can't wait to start fitting her out.

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  10. vqjet
    vqjet

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    Sanding the hull? Looking Sharp

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  11. vqjet
    vqjet

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    Mike, what size boat is that in the back ground of the 3rd to last picture? Looks massive!

    Posted 15 years ago    #                  
  12. Tony737
    Tony737

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    I see Hamish has his new press!

    Posted 15 years ago    #                  
  13. Mike
    Mike

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    Thats the new puddle hopper..... :mrgreen: :mrgreen: :mrgreen: .....No its a new concept boat that you will see alot more of shortly :wink: :wink:

    Hamish has a couple of new toys tony.......hasn't helped his looks tho :roll: :roll: :roll: :mrgreen:

    Posted 15 years ago    #                  
  14. Mike
    Mike

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    Picked up the hull and jet today and think I may have a visit from a very owner tomorrow :mrgreen: :mrgreen: . The boys have rolled the nose in a little earlier on the small boats and it looks very sleek!!

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  15. vqjet
    vqjet

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    Yeeeeeee Haaaaaa! Looks awesome, 1 o'clock here I come!

    Posted 15 years ago    #                  
  16. vqjet
    vqjet

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    It has been a "busy" week at work, however I managed to find some time to build a trailer for the boat. Pretty much all finished apart from the suspension, axle, hubs, wheels, winch ect but that should go on relativity quickly. The only major thing still needing to be done is to weld in the bunkers, just not to sure where I should place them. Where do you guys think, option "1" or "2" or both? The main frame is 100 x 50 x 3mm Duragalv and the bunkers 75 x 50 x 2mm (thinking they don't need to be as strong as the main frame and the trailer is already getting pretty heavy).

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  17. vqjet
    vqjet

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    The current trailer and construction

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  18. vqjet
    vqjet

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    more pictures

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  19. vqjet
    vqjet

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    The VQ35 vrs the LS2

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  20. vyrusc3
    vyrusc3

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    hi
    id be placing the bunkers directly under the bearers in the hull so as to support the weight of the boat in its strongest part
    most bearers are 600mm apart so 300mm out from the trailer centre line would be the go...........
    nice looking hull by the way !!

    Posted 15 years ago    #                  
  21. vqjet
    vqjet

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    The trailer is now finished! Took way longer to make than I would have ever thought, so many little things that needed doing as well as a few stuff ups. Got it a WOF and reg yesterday and it tows really nicely. Thanks for the advice on the bunkers, they work perfectly in the suggested location. Will add pictures shortly.

    Posted 15 years ago    #                  
  22. Mike
    Mike

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    Yep good job on the trailer, Starter mount all done and started fitting our exhausts to the motor, pics next week :-)

    Posted 15 years ago    #                  
  23. vqjet
    vqjet

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    The motor is looking fanatic! Any pictures yet :D

    Posted 15 years ago    #                  
  24. Mike
    Mike

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    Pics tomorrow....jet is fitted

    Posted 15 years ago    #                  
  25. Mike
    Mike

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    sorry for the delay....but here they are

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  26. Mike
    Mike

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    8O

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  27. vqjet
    vqjet

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    Brilliant workmanship! Dose that look good or what! Just about time for me to take over, what an act to follow! Guess we need to decide on the computer, microtec or link. Do you know if there is a microtec that will run the variable cam timing and intake Mike? I'm one happy camper :D :D

    Posted 15 years ago    #                  
  28. butch az
    butch az

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    love to here how ya boat handles ,im just startin to kit out my boat ive gone for 12 and half deg and sometimes i wonder if i should have gone more

    Posted 15 years ago    #                  
  29. vqjet
    vqjet

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    Mike - 2 months ago  » 
    Pics are coming through of the hull build.....There is another Scott boat that has been done at 12 deg and I have recently spoken to the owner and he is very happy with the handling of the 12 deg, I havnt driven it but have driven the 14deg LS2 powered one we did and its only at the high end of the performance that I could tell it was 14deg 8O :wink:

    Hay, we wanted a boat that would go pretty shallow hence the 12 deg, according to Mike it will go really well. I guess there will be some compromises in handling but we will have to see. Had a bit of time off from the build but will be getting back into it big time this week, my goal is to have it finished by the first week of march.

    Posted 15 years ago    #                  
  30. vqjet
    vqjet

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    Its been a while since I've had a good hack at the boat, but finally starting to make some progress again :D

    - Finished the trailer
    - Cut the floor
    - Installed the steering
    - Wired the motor and got it running (with a bit of help from NZEFI)
    - Installed the fuel system
    - Got the seats

    Picking up the heat exchanger, sand trap, exhaust outlets and last bits and pieces on Friday hopefully. I am aiming to take off next Wednesday and take the boat down to the river to see if it floats :P

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