twin port ??

[lobie]

ive just had a new long block from steve strong engines covered 500 miles and changed the oil , all is well really good quality engine

now heres my question i have no mechanical knowledge at all (bit thick) my engine has a single solex carb but my old block and my new block are both twinport. can anyone explain what this is all about

cheers

lobie

 

[antoine]

twin or single port refers to the way the fuel/air mix enters the cylinders via the heads., (excuse the ****** diagrams)

single= (O)
twin= (OO)

its the manifold that makes the difference rather than the number of carbs.

 

[terrier man]

Also means you have 50BHP over 47BHP single port engine. :lol:

 

[A5H]

This is a twin port head, you can see the two ports where the fuel/air mixture enters from the carb via the manifold.

 

[lobie]

i see ... i think in other words its a slightly more powerful engine :lol:

 

[ZedBed]

i see ... i think in other words its a slightly more powerful engine :lol:

Technically, yes, but my single porter seems to me to go better at low revs and uses less petrol (it seems).

 

[lobie]

hmmm well i can manage 25mpg is this good aor bad or average

 

[montypsx]

i'd say about right i get between 25 (windy)-31 ish(slight wind) and i'm well happy with that. :mrgreen:

 

[terrier man]

hmmm well i can manage 25mpg is this good aor bad or average

That's about right, you might get a bit more on the Motorway with a tail-wind or less with a head-wind. :lol: As for side winds just hope you can stay in your lane :shock: & bugger the fuel economy. :roll:

 

[sparkywig]

i see ... i think in other words its a slightly more powerful engine :lol:

But less torque.