Im pretty sure I read somewhere they are different , the 750 engine has a shorter stroke and thus a lower cylinder head height , so it makes sense that they would be different
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| 900/750 ss/monster inlet manifolds http://ducatipaso.org/forum/viewtopic.php?f=13&t=6714 |
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| Author: | customhead [ Mon May 19, 2014 2:43 am ] |
| Post subject: | 900/750 ss/monster inlet manifolds |
Does anybody know if there are any differences between the 900/750 ss/monster inlet manifolds? I am fitting some Mikuni carbs from a 750SS to a custom Sport build and am wondering whether it matters. thanks, Sean PS anybody have a set they want to sell before I go shopping for them? |
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| Author: | Mc tool [ Mon May 19, 2014 3:31 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
Im pretty sure I read somewhere they are different , the 750 engine has a shorter stroke and thus a lower cylinder head height , so it makes sense that they would be different
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| Author: | customhead [ Mon May 19, 2014 8:38 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
I thought so too but does that mean 900ss units are shorter? |
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| Author: | Mc tool [ Mon May 19, 2014 7:48 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
longer , I have a pair off a 900ss , I can dig em out and have a measure up / pic if you want
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| Author: | Fraser [ Mon May 19, 2014 9:43 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
Customhead, I have the 900 SS inlet manifolds on my 750P and they fit fine with the Mikunis (also off a 900 SS). Cheers, Fraser. |
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| Author: | paso750 [ Tue May 20, 2014 11:36 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
if you put a 750 and a 900 Mikuni inlet manifold next to each other you will hardly spot a difference but there are several. The 900 inlet manifolds have a different length and angle to compensate the cylinder height and to position the carb in the exact same height as on the 750. You can fit 900 manifolds on a 750 and probably vice versa but the carb will stand slightly askew and due to that mismatch the carb and rubber boots may not sit perfectly so there`s a risk of leak air. Better get a set from a same cc bike. SS and Monster inlet manifolds are not identical. The Monster use a vacuum fuel pump and fuel valve so the inlet manifolds have threads for hose nipples. Some SS inlet manifolds have a screw blocking these holes others don`t have them at all. |
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| Author: | Mc tool [ Tue May 20, 2014 9:21 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
Nah nah na nah nah 
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| Author: | Nunodeo [ Wed May 21, 2014 3:04 am ] | |||
| Post subject: | Re: 900/750 ss/monster inlet manifolds | |||
Sean, go all out and custom make one like this, so your carb. can sit straight. 
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| Author: | lane1feathers [ Wed May 21, 2014 10:13 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
| Author: | paso750 [ Wed May 21, 2014 11:15 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
or Mikuni TMs |
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| Author: | lumbux [ Wed May 21, 2014 6:25 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
The inlet manifolds from the SS are all marked and if you fit the wrong ones you can end up restricting the bike. The ones for a 900 should be stamped with a 9, 750 a 7, 600 a 6 and 400 a 4. They are all the same length but the bore will differ. |
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| Author: | paso750 [ Wed May 21, 2014 6:53 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
only the later ones were marked and the bore of the 750 & 900 ones is the same. |
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| Author: | Nunodeo [ Thu May 22, 2014 12:47 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
I'm fairly new to the 750, so I can't comment on the stamping. All I know is that I took an intake from a early 2000 750, cut it up in 3 pieces, got it re-welded, put it on, and the bike is finally running well. 
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| Author: | paso750 [ Thu May 22, 2014 7:55 am ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
from a 2000 ? Then yours would be from a bike with fuel injection. 
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| Author: | Nunodeo [ Fri May 23, 2014 5:04 pm ] |
| Post subject: | Re: 900/750 ss/monster inlet manifolds |
Sorry guys, the intake I cut up for my 750S was from an early 90's 900, not an early 2000 750. 
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