Carb sync adapters

[devon]

Hey guys, I've got a 78 cb400t. Looking to do a carb sync using a homemade manometer, I've seen guys drill a hole in an m5 allen bolt or use a main jet, if it's the right thread pattern. What do you guys suggest? (My bike already has a spot for the adapters in the cylinder head, tapped M5)

Thanks,
Devon 8)

 

[ktriple]

get/make adapters -
http://www.motorcycle-superstore.com/1/4/65/14463/ITEM/Motion-Pro-Syncopro-Carburetor-Tuner-Adapters.aspx

or
A Uni-Syn works just as well on a twin. A little more complicated on a four. On my old twin, I just manually synced it. It really wasn't fussy - CB200

 

[crazypj]

It's easier to buy a set, unless you can make some with brass tube or 5mm bolt and 1/16" drill?
CB360 is special thread, as far as I know it's the only Honda that needs 'my' adapters

 

[devon]

I found some 5mm brass tube locally but the wall thickness is .45mm so once I got my die on it the tube basically disappeared
I also tried drilling some brass round stock I had but it just kept eating my drill bits lol no matter how much cutting oil I put on there

I've ordered some now only problem was a multi week wait. Oh well