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1.6 With A 1.9 Crank


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27 replies to this topic

#21
matty_gti

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And failing that I supose you could skim the pistons down a bit but then that kind of defeats the object :)

#22
welshpug

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Depending on how much clearance there is this would be the ideal time to drop in a nice cam :)

Though if its on standard AFM I would leave it, different story if you upgraded to MP3.1...

#23
matty_gti

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Depending on how much clearance there is this would be the ideal time to drop in a nice cam :)

Though if its on standard AFM I would leave it, different story if you upgraded to MP3.1...


is that Mi managment?

#24
DamirGTI

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Well it's not ideal , this re-curved dizzy ignition system for 11.1 CR engine , but it's good enough for starter :) by all means mappable ignition will be the best option cos you'll be able to squeeze full potential of such modified engine :D

So with good ignition system there will be no need for skimming the pistons , enlarging the combustion chamber/volume or similar stuff - just min. 98 RON octane petrol and good ignition system properly timed will be all what's needed :(

I'll be fitting MS soon cos i want to see how much power/torque i can squeeze from this engine with mappable ignition/fueling , although it's very nice to drive as it is now on this the H&H re-curved dizzy :D

Damir

#25
pug_ham

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is that Mi managment?

No, MP3.1 is from either a BX GTi, 405 SRi (some not all) the ZX.9i Volcane.

It'll make better use of the cam on this system than a standard AFM dizzy etc but ideally a remap is needed to get the full benefit of the cam.

Graham.

#26
vickiw106

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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 by vickiw106, 30 December 2008 - 12:20 PM.


#27
welshpug

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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.

#28
vickiw106

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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 Iím 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 (donít know how much though)