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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?

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

I thought so too but does that mean 900ss units are shorter?

longer , I have a pair off a 900ss , I can dig em out and have a measure up / pic if you want

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.

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.

Nah nah na nah nah

Sean, go all out and custom make one like this, so your carb. can sit straight.

Nunodeo wrote:Sean, go all out and custom make one like this, so your carb. can sit straight.

The Mikuni carbs come as a pair...joined at the hip...as it were, unlike the single delortos

or Mikuni TMs

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.

only the later ones were marked and the bore of the 750 & 900 ones is the same.

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.

from a 2000 ? Then yours would be from a bike with fuel injection.

Sorry guys, the intake I cut up for my 750S was from an early 90's 900, not an early 2000 750.