50mm or 42mm intake manifold...?

[ibiza_95]

Been looking at a few manifolds on the great bay of eees and noticed that some say 50mm or 42mm... Also mentions a bit of extra something from the 50mm manifold... how do you know which one you have, is there a way of finding out without removing the manifold from the engine?
And is it going to make a difference if i have a 42mm manifold and i get a 50mm one?

Much appreciation as always

 

[m0rk]

I'm 95% sure that the ABF has the larger inlet

 

[Dolly_Gti]

i thought the mk2 golfs 1.8 16v had the 42, then the later engine which is the 2L 16v had the 50mm?

 

[Jamin Berry]

do you have any links to these intake manifolds?

 

[ibiza_95]

just stick golf inlet manifold in ebay and youll see them... No visible differences, i was just looking at polished manifolds

 

[F2 Stu]

The ABF has the larger inlet... 42mm is what the yanks got and no bigger

 

[Rocco]

I used to have both on previous Golf 16V's...the 42mm provides better torque figures and the 50mm hight=er top end...at least that's what I got on the rolling road at AMD

 

[Jamin Berry]

well, on the 16v surely we want higher top end (50mm) due to its higher revving fortay.

 

[RobT]

the smaller maiifold was on 1.8L cars and yank cars that didn't make as much power as ours - the 50mm is the one for the abf

 

[gregclarks]

Yeah all ABF ones are 50mm, all the polished ones on eBay are the 42mm KR type. a polished ABF (like i am working on) is a rarity! I have three abf manifolds now - working through them! flowing them along ther way...

 

[gregclarks]

Plus, i think that the KR type ones, even the 50mm ones have different throttle bodies on them. and the location is different, stick to abf

 

[ibiza_95]

thanks for all the info... interesting to know
Think ill be sticking with my inlet then