Mini 3 Port Injection

mikos · Post by **mikos** » Tue Apr 12, 2005 12:00 pm

hi, very new to this so go easy

i have an MS on my turbocharged mini, was wondering how to go about going to full EFI on the mini's 5 port head, seeing as we only have 2 inlet ports.

Bill Shurvinton · Post by **Bill Shurvinton** » Tue Apr 12, 2005 12:26 pm

If it were me then I would get a single TB with 2 injector ports. Ducati
one should do. 50mm so a little big, but a pair should only set you back
Â£50 and you can sell the other one.

2 400-500cc injectors. Run 4 squirts alternating. Should work like a
dream as the injectors can overlap, giving the same effect as a single
1000cc injector, but with better low end control.

Easy peasy.

Bill

mikos wrote:

> hi, very new to this so go easy Smile
>
> i have an MS on my turbocharged mini, was wondering how to go about
> going to full EFI on the mini's 5 port head, seeing as we only have 2
> inlet ports.
>
>
>
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racingmini_mtl · Post by **racingmini_mtl** » Tue Apr 12, 2005 1:13 pm

I agree with Bill for the setup and configuration.

As for the TB, you could look at the Honda RC51 which also has two 2-injector TBs and might be easier to find and cheaper.

Jean

mikos · Post by **mikos** » Tue Apr 12, 2005 1:23 pm

so were talking two carbs rather than say a single Jenvey with 2 injectors?

racingmini_mtl · Post by **racingmini_mtl** » Tue Apr 12, 2005 1:33 pm

No. Actually what Bill and I are saying is to use only one of the 2 TBs from a motorcycle. This will be similar to the 2-injector Jenvey but will very likely be much cheaper.

Jean

mikos · Post by **mikos** » Tue Apr 12, 2005 1:46 pm

ah gotcha.

Bill Shurvinton · Post by **Bill Shurvinton** » Tue Apr 12, 2005 1:46 pm

No single body, 2 injectors. Jenvey would work great.

mikos wrote:

> so were talking two carbs rather than say a single Jenvey with 2
> injectors?
>
>
>
>

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(posted by email)

lapuwali · Post by **lapuwali** » Tue Apr 12, 2005 1:47 pm

What's not being said explicitly but only implied is that you should abandon any hope of "port" injection in your A-series unless you want to do a LOT of development. Throttle body injection works fine. One larger TB will be easier to set up than two smaller ones, as well as cheaper.

mikos · Post by **mikos** » Tue Apr 12, 2005 1:57 pm

also i'm running a cam with some overlap, so on each revolution i'm gonna have neighboring cylinders with each inlet open so how do i get around charge stealing.

cng1 · Post by **cng1** » Tue Apr 12, 2005 2:07 pm

"lapuwali" wrote:
> What's not being said explicitly but only implied is that you should abandon any hope of "port" injection in your A-series unless you want to do a LOT of development.

Well we'll soon see as I'm doing just that, sure half of the cylinders
will have to run a bit richer than the others but if you're prepared for
that there really shouldn't be a problem. Yes siamese ports are a pain
but only if you're going for ultimate economy or emissions compliance.

(posted by email)