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Old 09-05-2005, 04:00 PM   #1
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XR2 Jets

Hi all,

Just got my engine back with running in jets 0.74" appartently have to use these for the first 7 hours. My question is what size jets should i use after that to get the most speed out of my engine?

Also have a Susuki V4 two stroke 100HP engine and want a new prop for it which pitch should I be looking for think it revs to 5,600 @ the moment?


Stewart
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Old 09-05-2005, 04:09 PM   #2
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whats that suzi on?
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Old 09-05-2005, 04:16 PM   #3
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Phantom 16
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Old 09-05-2005, 04:21 PM   #4
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just realised, its the one in the vid.

cool boat :tu
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Old 09-05-2005, 04:34 PM   #5
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What jets did it have in b4 the blowup?
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Old 09-05-2005, 04:50 PM   #6
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What sort of top end did you get out of your P16?
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Old 09-05-2005, 04:51 PM   #7
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Dont know what it had before?
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Old 09-05-2005, 04:57 PM   #8
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Quote:
Originally posted by darexms
What sort of top end did you get out of your P16?
Brother reckons 52-53 mph! Full trim very flat day, following wind and tide etc
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Old 09-05-2005, 04:57 PM   #9
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Tried the prop calcs but dont know the gearbox ratio
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Old 09-05-2005, 05:02 PM   #10
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Quote:
Originally posted by darexms
What sort of top end did you get out of your P16?
What do you get out of the ring 16? We used to have a 90 Yam on the phantom 16 42-43mph then changed the Prop for a Ballasitic and got 48mph out of it raised the engine as well. But Couldnt water ski behind it anymore at that height.
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Old 09-05-2005, 05:25 PM   #11
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i had a ring 16 with a mariner 75hp did about 45mph
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Old 09-05-2005, 05:25 PM   #12
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Quote:
Originally posted by Silversurfer
We used to have a 90 Yam on the phantom 16 42-43mph
That seems slow! A race P16/90 Yam should do more like 55mph I would have thought.

Ciao would have a more accurate idea of it....over to you John.
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Old 09-05-2005, 05:38 PM   #13
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Oh well - Thats on boat speedos and all the rest of the boll*cks about whos goes the fastest. The fact was not much beat it in Salcombes Estuary and thats whats mattered @ the time!

Anyways back to the orginal question Jets and Props please!!

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Old 09-05-2005, 05:44 PM   #14
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Quote:
Originally posted by Silversurfer
What do you get out of the ring 16? We used to have a 90 Yam on the phantom 16 42-43mph then changed the Prop for a Ballasitic and got 48mph out of it raised the engine as well. But Couldnt water ski behind it anymore at that height.
Dunno what speed, it's not finished yet. I was hoping to see 45, maybe 50mph which to be honest is more than enough for what I want it for. The problem is, I've still got that little voice telling me to change the order to a 175 before it's too late. I don't know how true it is, but I've been told they do 75mph+ with one of those.
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Old 09-05-2005, 05:46 PM   #15
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What prop is on the Suzi at the moment?
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Old 09-05-2005, 08:03 PM   #16
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What ever they come with new. Wouldnt put a 175 on a ring 16 though mate. No more than a 115. 90HP will be fun.
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Old 09-05-2005, 09:16 PM   #17
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Quote:
Originally posted by Matt
What jets did it have in b4 the blowup?
Matt theres a job for you in the diplomatic service, I couldn't put it as suttle as that.

Well done
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Old 09-05-2005, 10:02 PM   #18
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Quote:
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Matt theres a job for you in the diplomatic service, I couldn't put it as suttle as that.

Well done
They where obviously not big enough as it ran lean !
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Old 09-05-2005, 10:20 PM   #19
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Just take the jets out!
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Old 09-05-2005, 10:43 PM   #20
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Quote:
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Just take the jets out!
Why?
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