Help...Yamaha RN PLEASE

[munki63]

So during by build I have lost the bolts that hold the intake to the engine can somebody PLEASE tell me the size, thred pitch and length

 

[junkyardj]

is it a stock intake manifold? i had a A.M. that needed longer bolts

 

[munki63]

i have a protec intake

 

[Waternut]

M6x1.00x25

Intake manifold is roughly 15-16mm on my SN so if your manifold is much thicker than that, you may want to step up a size.

http://www.x-h2o.com/threads/12377

 

[junkyardj]

ya x2guy has that manifold too and i remember it had some really long a$$ bolts, its a killer intake

 

[munki63]

ya x2guy has that manifold too and i remember it had some really long a$$ bolts, its a killer intake

It came with the carbs i bought, how much of a diffrence will it make and where will i notice it?

 

[Waternut]

Measure the thickness of the intake manifold mounting flange(aka bottom where the gasket mates and the top where the bolt head attaches). If it's 15mm use the standard 25mm bolt. If it's 20mm bump up to a 30mm bolt...It's that simple.