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  1. Replies
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    Its better to use the tiller stub like in photo....

    Its better to use the tiller stub like in photo. Had lot midsections crack when using powerhead bolt on Yam. (Mostly on tunnel boats).
    If you use powerhead bolts add stabilizer link each side to...
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    Thank you for your reply. engine runs fine for 3...

    Thank you for your reply.
    engine runs fine for 3 laps then starts to reduce throttle because port bank EGT sender measures 68 deg C. Dropped gearbox and removed stats and can blow through, so dont...
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    200xs optimax sst200 water pressure

    Hi. We have a optimax 200 SST with 3 hours from new. After 3 min running it holds Bach and throttle is reduced. Scan says port bank EGT too high 68deg. Starboard bank 55deg. Throttle position sender...
  4. Here are contact details for Bimba. I am sure...

    Here are contact details for Bimba.
    I am sure Bimba can answer your questions about Selva f1000 engines
    Here are some photos of some of the f100 boats has for sale

    bimba sjöholm...
  5. I think its a case of, due to EU law you cant...

    I think its a case of, due to EU law you cant sell new NON green engines in Europe. This is why the carburetor F1000i engine is out of production. However parts are still available and homologation...
  6. Hi Phil. I it is a little quiet from Selva.!!!. ...

    Hi Phil. I it is a little quiet from Selva.!!!.
    Reading between the the lines I see it like this.. Selva have produced a epa power head and it has been tested on the race mid and box.
    BUT there is...
  7. Bimba is selling her F1000 rig.Here is copy of...

    Bimba is selling her F1000 rig.Here is copy of advert for complete F1000i rig for sale.
    Good boat and quick !!

    Bimba Sjoholm
    Now my Lucini boat (composite) is for sale!
    One of the best Lucini...
  8. Replies
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    I would just like to stop the thinking!! that the...

    I would just like to stop the thinking!! that the Yam 70 is a weak engine if you carry out any work to the engine. This is not true. We race every Thursday evening (20 weeks) plus a National series...
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    Sorry Jeffrey, Don you are right !, it has gone a...

    Sorry Jeffrey, Don you are right !, it has gone a little astray.

    I think try what you have see how it goes first. Then if you want to go faster, start with the prop before you start on your engine...
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    What rules do you run to for engines , do you run...

    What rules do you run to for engines , do you run 60 or 70 gears ? Are you looking for complete engines or just powerheads Let me know whats good for your racing and I can find Good, fast motors....
  11. Replies
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    Don, I understand some of what you say, I...

    Don,
    I understand some of what you say,
    I have opened new "out the box" Yamaha 70ces and the porting in some places can be very close to each side of UIM spec. But I think this is more to do...
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    Looking at your photos, looks like 1 piece cyl...

    Looking at your photos, looks like 1 piece cyl head. beware of core plugs in head, they pop out, use plate strips between cyl head bolts to hold them in. watch cyl head bolts (2 washers on each bolt)...
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    Hi Jeffrey, Do you have photo of boat and...

    Hi Jeffrey,
    Do you have photo of boat and engine, I guess if its a F4 its one I will know ??
    175 psi is the lower side of good if it has 1 piece head. If its got 2 piece head 175 is good.
    Bottom...
  14. As I understand it, The cut off time for new...

    As I understand it, The cut off time for new homologations is December.
    The boat tests with the new engine have not been all Selva has hoped for !!. They are working on getting more power from the...
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    This is from F1H2o site in the section about F1...

    This is from F1H2o site in the section about F1 nations cup. . . . . .

    "Sunday, 20 March, ABU DHABI (UAE): Teams and drivers entered in the new F1 Nations Cup Championship, which will start later...
  16. Sorry its gone a bit quiet. Things are still...

    Sorry its gone a bit quiet. Things are still happening !! I hope I can give some good news soon!.
    It is very encouraging to see this thread has been visited 9000 times. That must be good, right ?.:)
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    Heres a photo I found of plexiglass canopy latch....

    Heres a photo I found of plexiglass canopy latch. You can see plexiglass sticking out the inside of the open canopy
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    We use 2 layers of plexiglass about 2 inch wide...

    We use 2 layers of plexiglass about 2 inch wide and 7 or 8 inches long screwed to small wooden block on inside of canopy. You hook your finger under plexi glass to shut canopy. and to open, you just...
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    Don't know if it helps !! but the old 2 cyl 60...

    Don't know if it helps !! but the old 2 cyl 60 yam short shaft fits straight on Yam 90 powerhead. (90 yam was 2 cyl 60 with extra cylinder added )
    Some people are still running this combination...
  20. Just for information !!. The Selva f1000i...

    Just for information !!.

    The Selva f1000i engine has a little history, I think it goes something like this. . . . . .

    Back in the day. . Selva made a engine for UIM F3. . 850cc, race mid...
  21. I would be interested to hear of thoughts of...

    I would be interested to hear of thoughts of sst60 drivers who have had a chance to see the Selva engine. I know its the older carb motor you have, but mid and gearbox should stay the same on new...
  22. Here's hoping you get time to get Selva running....

    Here's hoping you get time to get Selva running. We have a few drivers who will be watching for how it goes against sst60 rigs. Fingers crossed you get it working
  23. Our team won the f4 world championships with boat...

    Our team won the f4 world championships with boat driver combined weight of 375 kg. Or 825 lb.! !
  24. This is good. I am very interested on how the...

    This is good. I am very interested on how the current F1000i motor goes on a sst60 boat? . Looking at the f1000i. Boats in Italy, they have lots of lift at the back end! Boats are running with very...
  25. I dont think you need crash boxes for this class...

    I dont think you need crash boxes for this class to be safe as a 'starter' class! .
    The boats dont have the weight. Of a f1.
    Just make the pickles and nose deformable and the right shape! .
  26. I have been involved in f4 (yamaha) here in...

    I have been involved in f4 (yamaha) here in europe for past 25 years.
    The f4 class has been the backbone of racing here for most of this time.
    Now the Yamaha has been killed off by UIM!!!!! . We...
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    Powerabout, That sounds good, but I have a few...

    Powerabout,
    That sounds good, but I have a few questions?.

    Is the sst60 midsection and gearbox available to buy new?

    Will the E-tec powerhead fit ?

    Will the E-tec tuner (exhaust) fit in...
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    Hi Guys, Sorry to but-in to your thread, But I...

    Hi Guys,
    Sorry to but-in to your thread, But I think we have a simular problem here in europe, with the Original F4 class (13' hull with Yamaha 850 cc 70ces engine).

    The UIM with their infinate...
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