Identifying intake manifolds (2013)

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maylar

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Do intake manifolds have casting numbers that identify what size they are? Like for my RH10 850 head I think the ports are 30mm but the carbs are 32mm - is there anything stamped on them that would identify?

Thanks.
 
Dave

The tapered 32mm x 30mm manifolds sometimes have 06-5196 crudely lettered inside--best to check the internal diameters at each end with calipers or a micrometer. The ones I've looked at are very close to the nominal values



Tim Kraakevik
kraakevik@voyager.net
 
Dave

The tapered 32mm x 30mm manifolds sometimes have 06-5196 crudely lettered inside--best to check the internal diameters at each end with calipers or a micrometer. The ones I've looked at are very close to the nominal values



Tim Kraakevik
kraakevik@voyager.net
I bought a pair of carb manifolds for my new-to-me MKIII motor a while back on ebay. Recently I measured the inlet & exhaust ends, and the hole near the cross-over tube is 32mm and the opposite is 30mm. Inside the manifolds the number 065195 is stamped (yes, 065195). Both ends should be 32mm (the p/n for 32mm manifolds is 062711, and I have also seen 30mm manifolds, p/n 060509). Obviously these won’t work on my engine, and getting proper ones shouldn’t be a problem. These look like Norton manifolds, but I cannot find the 065195 number. Anyone know what these are? Thanks in advance.
 
They go with the 74, MK 2 850, RH10 head.
RH10 has 30mm intakes. Those manifolds match up to the 32mm carbs.
If your Head is stock it is a RH4 with 32 mm ports.
 
Identifying intake manifolds (2013)
 
So how did they stamp inside such an awkward area ?


If examined closely then it can be seen that the number isn't a stamp but what I think is an imprint left by the casting core (which in turn would have got the number stamp from the core mould).

My 850 Mk3's 32-32mm manifolds have the number 06.2727.

Identifying intake manifolds (2013)
 
If examined closely then it can be seen that the number isn't a stamp but what I think is an imprint left by the casting core (which in turn would have got the number stamp from the core mould).

My 850 Mk3's 32-32mm manifolds have the number 06.2727.

View attachment 19816
O.K. , So It's not stamped by Santa's elves , but actually part of the casting process. Thanks , ( just was curious ). I'll look at mine next time the carbs are off.
 
Never noticed the stampings before.
I have two sets of the 2727's. One set is stamped like above, the other has larger stampings that run the whole length of the manifold.
Different supplier? Different casting? Intetersting none the less?
 
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