Difference between single and dual port?

[daveydad]

Looking at purchasing a decent looking '67 Beetle with a 1600cc dual port engine. Here's a pic of it. What's the difference between a single and dual port?

[Glenn]

single port

dual port

_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

[Danwvw]

There are a lot of differences, the big one being that there are a lot of performance upgrades available for the Dual Port Engines however the 67 had an original matching H Case engine number for those who value having their car all original.
The 1971 and later AE and AH Dual Port engines have improved dog house fan shroud and an aluminum oil cooler for better cooling etc.. maybe avoid it though if it's got the original 67 single port fan shroud on it because with Dual Port heads that's. a recipe for over heating. What Letters does the Case Number Begin with? H or AE or AH or DO or Mexico or Nothing?
My AE Dual Port Case:

True Dual Port Engine cases have 2 oil pressure relief plugs on the bottom. The Single Port engine only had the one at the pulley end of the case.

_________________
1960 Beetle And 1679cc DP W-100 & Dual Zeniths!

[Dusty1]

[Busstom]

[Dusty1]

[KTPhil]

Those rear tins are not from a '67. They look like maybe 1300 tins, judging from the single warm air intake on the left side. Same for the air cleaner. Here is what a stock '67 engine bay looked like:

(yes, please excuse the then-common non-stock plastic fuel filter)

[daveydad]

So is there a major concern if the tin isn't correct or it has that air filter? And where does that thinner left hose connect to?

[shakers73]

[Eric&Barb]

[rcooled]

[Busstom]

...^ ^ ^
...............^ ^ ^

What I was thinking.