I was wondering what the differences are between the xr2i efi head and the rs turbo efi head????
I have a spare xr2i efi head and wanted to have it machined and use it on my rs turbo. I will use a new cam, valves, rockers etc
Also is the inlet manifold and injector rails etc all the same??? basically to make it easier: what can i use from an xr2i engine inorder to build an efi rs turbo engine??? I have alot of spares lieing around and thought i could start a new project.

 

HI DO YOU KNOW IF YOU CAN JUST BOLT ON NEW SET OF ROCKERS FOR XR2I 8VALVE!

 

hi i beleive the valves are the only major difference as they are hardened or sodium filled on a turbo head to withstand the heat/boost
an xr2i head will fit and work well .................................................. .................................................. ......



until the valves melt and ruin your bottom end


and for the other poster asking about the rockers ......

am pretty sure you can just bolt them on no probs

 

THANKS

 

There exactly the same it was only the series one that had the sodium filled valves none of the others did.
The rs turbo inlet will bolt straight up, the injectors are differant though so you will have to buy some rs turbo injectors.

Mark.

 

thanks
does any one have a 15" wheel that they do not need as i hit a pot hole and it bent my wheel for xr2i h plate in Manchester thanks

 

iirc inj are the same mate!

 

frst and erst efi heads are the same , dont think you can use the 2i loom tho but not sure.

 

the plug on the inj loom fo the air temp sensor needs changing as does the sensor its self but the inlet inj tb ect are the same

 

as above, heads are the same, identical, different air temp sensor used as is the plug for this.
idle control valve is either remote mounted or fixed to inlet, this is on all the 2i/3i/frst inlets, depends on year of manufacture IIRC.

 

I have a feeling that the cam pulley is different. All the pulleys are identified with a two letter code (KA, LA, AA, ...). Usually the teh turbo CVHs have had a pulley with 4degrees more retard than the naturally aspirated CVHs. I think KA was the turbo one. LA and AA are for sure N/A one.

The head, valves, springs, ports, cam, guides, etc are identical.

 

my turbo pullys a ka one if that helps?

 

xr2i injectors are exatly the same as rs turbo injectors

 

Heads same as said.

Martin