what sort of work is involved in modding a mfi inlet manifold (preferably the xr3i log shaped inlet) to allow me to run efi injectors????does anyone have any pics,or prices on what it would cost me to get done...and who could do it for me????

 

Christian has the modded 3i inlet i think, might be worth asking him

 

It's not easy. I have had 2 or 3 done now and the biggest problem is that they aren't made from the best quality metal, so getting them machined is tricky.

My latest one has steel-sleeves pressed in, which are a machined fit for the injectors and is spot-on, but this was expensive. I got a local machining company to do it.

 

Spooky!!

 

Oh, also, it doesn't stop at getting the Injectors fitted, of course mounting points are needed for the Fuel Rail and I also completely reworked the throttle body mount on mine too (compare it to other's that have a similar conversion and you will see what I mean).

Pics to follow.

 

You can see from this pic, the mounting points I added for the Fuel Rail and also the quality of the work to re-mount the throttle body (so as not to have to go all the way round the back of the Brake servo).

 

Christian and Beccy, surely would it not be easier to have the 3i plenum cut off and fabrictaed to mount onto the bottom half of an EFI manifold?

That way you can also get further up inside the ports to polish/match them aswell?

 

Thats the first time ive seen your engine bay

Very very nice

 

that was what did m8

 

but this also involve alot of work

 

Yea i can imagine, but we all know what a dab hand you are with a welder

Fairplay to you, all your stuff seems top quality

 

Thanks alot m8

 

Im sure im not the first to say it and i definately won't be the last

 

i see what you mean......when you say it costs alot of money....what sort of price are we looking at here????? i take it i was right in thinking the inlet flows quite well????
if i went down this route,would you make and sell me one???

 

christian,have you got any pics of your inlet so i can see how they machined the inlet for the efi injectors to sit in?????

 

Up for Christian

I also want to know price/cost - modding mfi inlet

PM

 

Where did you mount the fuel rail itself? On the EFI it's screwed onto the inlet manifold!?

 

XR2, you will notice if you look very hard the lugs for the fuel rail to bolt to, and im assuming Christian still runs the standard injector plate modified to accept electronic injectors

 

the jamsport plenum on fez runners looks quite tempting..

 

Why do you people (Christian and Hansen) go for these types of manifolds anyway? Imo Side feed manifolds don't have equal air distribution to the cylinders