Hi All

I know the inlet ports on the carb and injection heads are different but are the blocks different? I'm trying to work out if I can fit an injected head to a carb motor , as have both throttle bodies and carbs and want to run on injection, but the engine is a carb engine. I can get the tb's to fit (after some work) but it may be easier to fit an injection head if it'll all line up.

Regards

Wyn

hi there,
you could see if the head gasket is the same part number and if so i would think it'll bolt straight on

george

hi there,
you could see if the head gasket is the same part number and if so i would think it'll bolt straight on

george

Thanks George

I've looked on some of the online catalogues and the prices are different - so are the drawings - I guess that tells me the heads are differnet! Oh well, back to my imaginary drawing board!

Wyn

I am pretty sure it can be done, as they've mentioned doing it on the DSR Forums. Have a search in that engine section, I think someone ran a carbed head on a 2003 bottom end from an FI engine.

Thanks Chris

It looks like I can do it! Anybody got an R1 injected head for sale??? There's nothing on fleabay.

Regards

Wyn

I dont know of one but a friend recently picked one up off ebay for £50 so worth keeping a regular eye out on there.

Whats the reason you want to run a carb bottom end?

Thanks Chris

I have a carb engine and it's just been fitted - have a look here.

I'm determined to run TB's (as I don't understand carbs!) and, changing the head wil be far simpler than changing the motor (and cheaper!).

Regards

Wyn

Are you sure?!!

I would check to ensure all the sensors etc are the same on the carb engine, if not it might be trickier getting the FI ECU running with it (I suspect the DSRs mainly use after market ECUs for their engines so it may not get mentioned).

I would have thought you could flog the carb engine for best part of a grand and pick up a 2002/3 injected engine for only a couple of hundred more, my complete 2003 package from Colibriman was only £1200, so by the time youve bought head, the loom and other bits you need for your conversion, I would have thought it would be easier/cheaper just to swap the engine?
The only thing you'd need to watch is that the sump is nearly 1" deeper on the injected engines, although Im fairly certain the sumps are interchangeable if that caused an issue.

Chris

[Edited on 13/3/06 by ChrisGamlin]

could it be possible to fit throttle bodies with fuel injectors in them and run megasquirt or something similar? It would save swapping the head.

I believe the port spacing / sizes are different so might be as much work machining up spacers etc as changing the head

I'm going to be using an aftermarket ECU (Emerald) and will build my own loom so I've got 'half' the bits anyway!

The project is going to run to the wire (my first event is in 8 weeks) so I may just run with carbs initially, as I've got them and the fuel pump etc.. I could convert to injection when I get more time (Christmas!).

Regards

Wyn

Ah OK, if you're running something like an Emerald then I guess it doesnt matter so much what base engine you start off with. Good luck!!

Thanks Chris

I'll post updates to the list / web site.

Wyn