clio 172 cup race car engine info ??????

[andy-reid]

Hi does anyone know if the original clio 172 cup race car heads are modified? i.e the vvt blocked off inside the head to stop it working????
just rebuilt one and had it on the rollers with and without vvt connected the graph identical checked the electrical side was working and on the previous engine it did make 25bhp and 17lbft difference?? it does have vvt cams and the same dephaser the only difference is litteraly the head?? are they capped to keep a level playing field ?

 

[davo172]

All std internally same as road car. Inlet exhaust ecu is different on race car .

 

[andy-reid]

???????? spoke to someone the other day and he said his current 172 cup race car the dephaser solinoid was not connected and no wiring for it? so did they do somthing to stop cheating?

 

[Dan@SJM]

No. They still used VVT. Sounds like your solenoid is broken/stuck.

 

[MicKPM]

The X65 Cup racers also retained VVC as they were essentially Stock engines but with some very minor fettling/blue printing and a standalone engine management.

 

[p@blo]

Got a plug for the dephaser solenoid on both variants of the cup bay looms i have.

 

[andy-reid]

is that on the marelli managment?

 

[p@blo]

Yes mate, guessing one is 2000 evo and the other either 01/04. Is the one you've seen without using the marelli ecu or is it on bodies with standalone?

 

[andy-reid]

sorry the engine is out of a race car and been upgraded with steel crank rods& high comp pistons i then swapped the solinoid&dephaser pulley from my old engine it is on ITB'S and omex 600 the solinoid has power to activate the vvt but the graph on the rollers is identical with it pluged in and without it was working on the rollers last remap on old engine i was guessing it is blanked in the head?? may just get some non vvt cams & vernier pulleys and be done it made 197 i think so may be better and less to go wrong with non vvt

 

[Chip-mk1]

If you have bought an engine with a steel crank and rods it's a mile away from a std cup race engine so the details of a std cup engine won't help you.
it is common on big spec motors to lose the dephasor though.