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How to tell a 16 valve?

  • Thread starter Thread starter midwestgs
  • Start date Start date
M

midwestgs

Guest
Ok, so I followed several ads recently that advertised 16 valve bikes, that after initial questioning were in fact 8 valve.
The owners were honest in there misunderstanding but got me thinking about the best way to verify 16 valve motor.
Example; owner advertised "1978 1000 16valve" in ad..

My question, is there a quick way to identify a 16 valve motor?
I have already stumbled upon two bikes the owner "unknowingly" thought had been replaced with a 16 valve- that, just looking at the chrome, round valve covers said otherwise.
 
16-valve GS engines either have rectangularish cam end cap covers or none at all. 8-valve engines always have round cam end caps.
 
Last edited:
http://www.suzukicycles.org/_misc/identification.shtml

Above is a web forum post on VIN and Engine Serial Numbers that might help...

The Engine Codes starts with...

A-Z Alpha Character to identify displacement

and this alpha character is then followed by two (2) numeric characters

[TABLE="width: 150"]
[TR]
[TD="class: standard, width: 19"]1[/TD]
[TD="class: standard"]Two-stroke, single[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]2[/TD]
[TD="class: standard"]Two-stroke, twin[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]3[/TD]
[TD="class: standard"]Two-stroke, triple or four[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]4[/TD]
[TD="class: standard"]Four-stroke, single[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]5[/TD]
[TD="class: standard"]Four-stroke, twin[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]6[/TD]
[TD="class: standard"]-[/TD]
[/TR]
[TR]
[TD="class: standard, width: 19"]7[/TD]
[TD="class: standard"]Four-stroke, four[/TD]
[/TR]
[/TABLE]

I have a question on the above chart regarding Number 5 is a Four-stroke, twin and Number 7 is a Four-stroke, four.

It appears that both number 5 & number 7 are Four-stroke...so what is the -twin/-four designations....valves or cylinders?
 
Last edited:
Joe Guilbeau said:
I have a question on the above chart regarding Number 5 is a Four-stroke, twin and Number 7 is a Four-stroke, four.

It appears that both number 5 & number 7 are Four-stroke...so what is the -twin/-four designations....valves or cylinders?
Click to expand...

Cylinders.

.
 
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