D16Y7 Mystery

[hedges88]

Hi All,

First time post in the Honda section because I am having some serious technical bewilderment going on.

My car (Civic Coupe Sport 1.6 Auto 2000/W Plate) has the D16Y7 Engine, it is stamped as such on the bulkhead. This means it's supposed to be a NON VTEC 105BHP 1.6. Iv'e been considering the "mini" me swap by taking a D16Y8 head and bolting it on thus making it a VTEC Motor (Such as the guide here http://honda-tech.com/showthread.php?t=735196)

Looking around the engine bay today though, my car already has the VTEC Solenoid and Oil pressure switch!!! Does anyone know why a NON VTEC Motor needs a VTEC Solenoid??

The original sales invoice for the Car shows as 1.6 VTEC and so does the V5 log book.

Does anyone know if this is some bizarre regional variation?

Any advice is greatly appreciated

[muffinmenace]

What happens at 5600RPM?

[hedges88]

Tried it today, quite noisy and pulls all the way up to 7200RPM Strongly but no sudden increase in power, is that what is to be expected, ie the jokes about VTEC just kicked in yo

Driven BMW Dual VANOS before which I beleived was similar? and they gave no sudden "kick"

[NateWM]

SOHC vtecs won't give a kick like a DOHC K20 or F20B etc, but there will still be a noticeable sound difference when it hits VTEC.

Can you not just look at the engine code stamped into the block?

[hedges88]

Just to update everyone so if anyone has the same query they will know the answer

I called the original dealer in Glasgow who very kindly offered me the information I needed (The car was bought from them 13 years ago!!)

The D16Y7 engine is a VTEC Engine by NAME only. It's called a VTEC Engine as it features all of the VTEC components, such as the solendoid and EGR valve. However they have NO ALTERNATE CAM PROFILE. There is no switchover!

It's essentially just a naming exercise, and a very confusing one at that!

Now im on the lookout for a proper vtec motor