1.6 With A 1.9 Crank

[vickiw106 1]

Will doing this decrease the cc of the engine

 

I maybe wrong but I was talking to a friend that runs a 1.9 rally car and he is under the impression that the diameter of the 1.9 and 1.6 pistons and liners are different to obtain the 1900 cc

 

also I am currently running a 1600 rally car on carbs and a grp a head, do you think firstly there will be enough clearance on the valves/piston and also will the 1600 dizzy work or will I have to run a 1900 dizzy.

Edited December 30, 2008 by vickiw106

[welshpug 1,661]

no, its purely the different stroke and length of conrod that makes the difference in capacity, the liners and pistons are exactly the same diameter.

 

As for clearance it depends what entails a "group A" head, for the dizzy you really would need a modified one to make the most of the engine, or fit mappable management.

[vickiw106 1]

no, its purely the different stroke and length of conrod that makes the difference in capacity, the liners and pistons are exactly the same diameter.

 

As for clearance it depends what entails a "group A" head, for the dizzy you really would need a modified one to make the most of the engine, or fit mappable management.

 

 

Ok

Correct me if I’m wrong

 

So basically what we are saying to run a 1900 engine with 1600 pistons with modified dizzy

 

My group a head is ported polished big valves piper grp a cam and skimmed to increase cr (don’t know how much though)