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heeeeeeelp meeeee |
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Home away from home  
Joined:
2006/6/4 12:10
From Ipswich, QLD
Group:
Registered Users
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i am having so so so much trouble with my bloody SU's i am seriously thinking about just tossing them out and buying a set of twin dellorto's!!! i think the float is ####ed and i can't figure it out(i'm a musician not a mechanic)lol what kind of performance should i expect from changing from SU's to Dellortos???
anyone got an inlet manifold for an A15?
thanks heaps ty
Posted on: 2006/8/21 1:55
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Re: heeeeeeelp meeeee |
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No life (a.k.a. DattoMaster)  
Joined:
2004/5/4 8:32
From Canberra
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Registered Users
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do SUs even have a float?
Maybe they're out of oil?
Posted on: 2006/8/21 2:07
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_________________
Recommend trading with: gx5, wardat, dat141, datwags, boofhead, PIGDOG, MYORGZM, sssute, Ronald, beattie, dodgeman, dog160, LAGWAGON, Whitesedan, DamienS, simmos_datto, Team
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Re: heeeeeeelp meeeee |
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Home away from home Joined:
2006/6/4 12:10
From Ipswich, QLD
Group:
Registered Users
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see the thing is i took the ute to a mechanic at my local BP and he tuned them, but i couldn't drive it, first was shocking, it was like the engine was missing, so i tuned the su's a little bit richer and now i have a dead spot in high rev range, i don't know whats going on
ty
Posted on: 2006/8/21 2:12
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Re: heeeeeeelp meeeee |
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No life (a.k.a. DattoMaster) Joined:
2004/5/4 8:32
From Canberra
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Registered Users
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Quote: mechanic at my local BP and he tuned them hehe thats probably your problem.
Posted on: 2006/8/21 2:15
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_________________
Recommend trading with: gx5, wardat, dat141, datwags, boofhead, PIGDOG, MYORGZM, sssute, Ronald, beattie, dodgeman, dog160, LAGWAGON, Whitesedan, DamienS, simmos_datto, Team
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Re: heeeeeeelp meeeee |
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Home away from home Joined:
2006/6/4 12:10
From Ipswich, QLD
Group:
Registered Users
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Is it going to be worth going for the Dellortos???
would i get better performance??
thanks ty
Posted on: 2006/8/21 2:51
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Re: heeeeeeelp meeeee |
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No life (a.k.a. DattoMaster) 
Joined:
2002/6/14 7:24
From Sydney
Group:
Registered Users
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Are the "Hitachis" [SU's] off an A-series originally, or off an L-Series. Needle profile can influence the performance. Make sure the carbs are balanced with each other.
Check the needle and seat and float setting. They are not really that hard to tune....
Posted on: 2006/8/21 2:53
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Re: heeeeeeelp meeeee |
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No life (a.k.a. DattoMaster) 
Joined:
2001/1/30 1:33
From California
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Registered Users
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get rid of them and get delortows
Posted on: 2006/8/21 3:34
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Re: heeeeeeelp meeeee |
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No life (a.k.a. DattoMaster) 
Joined:
2004/9/4 23:59
From sydney
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Registered Users
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I have always found the Hitachis to be a relatively easy to get running right, and compared to the Webers or Dellortos (which need tuning by a real expert,not cheap) the Hitachis are a snack.
Posted on: 2006/8/21 4:49
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_________________
If it was easy, everyone would do it.
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Re: heeeeeeelp meeeee |
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Guest_
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im about to jump into the su arena this week too, but wondering if gx needles will be enough for my a15 and cam?
im guessing just but not too high up in the rev range, but then again my a15 doesnt rev as high as boofs old a12
Posted on: 2006/8/21 4:59
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Re: heeeeeeelp meeeee |
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Home away from home 
Joined:
2005/9/5 14:02
From Bunbury Western Australia
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Registered Users
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I would say that any side draught (Mikuni's, Dellorto's or Weber's) would flow more than a pair of SU's as the sidie's have 2 40mm butterflys each and even though the SU's dont have that restriction I think the 4 x 40mm throttle's would be better still. I thought that SU's always needed constant tuning for the atmosphere conditions too, I have a mate with a LJ Torana with a 186 engine fitted with tripple SU's, he had dramas keeping it running right then eventually went to tripple 45's webers and tuned it twice, it now sounds evil, responds like a 2 stroke and pulls much harder than the previous setup. Good luck with it anyway 
Posted on: 2006/8/21 5:22
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_________________
Two things that drive me nuts.....a dry road under a grey sky and a wet road under a blue sky, because no matter what, it's either too soon or too late to drive the way I want
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