16v kr and 16v pl diference?

Hello guys. i want you to answer me 1 question. I`m in project with my mk1 cabrio engine swap with 16V KR engine. and my friend has almoust same engine but with code PL and he wants to put it in his mk1 jetta. I want to ask you what to do to make same 102 kw  from pl and maybe more ? and my engine have this thing -



And my friends PL engine have not. What is it ? which is better ?

Thank you

I think the pl engine was installed in the American gti from 1987 onwards and was then replaced by the 9a in America later on. I think that was the case anyway. 16v pl and kr are almost exactly the same. Hope that gives you a little bit of info I might be corrected later on though.

Hi!
The main diference is that PL is catalitic, and have more smoother cams.

think the use 9a cams which are "smoother" on the inlet as to not damage the cat.
suppose you could not use a cat. kr cams on the pl and see how it goes.
both should have wur

possle said

think the use 9a cams which are "smoother" on the inlet as to not damage the cat.
suppose you could not use a cat. kr cams on the pl and see how it goes.
both should have wur

Run's fine. It's basicly the same engine.
I think the inlet manifold in the PL is 42mm and in the KR is 50mm, but i'm not shore. :wink:

kr is both 42mm and 50mm. I think the pl also has some sort of electromagnet in the metering head. Think im right in saying that.

the only difference between the engines is the pl has a lame inlet cam to avoid cat damage, and slightly different engine managment to allow lamda control again for the cat.

swap a kr inlet cam into a pl, and you have a kr engine

inlet nothing to do with it, kr got both the 42 and 50mm inlet depending on the age of the car

Thank you a lot for your answers they help us  alot

happy tinkering