Opinions on inlet manifold and fuel system

[Carl]

Hi Mike,
I had a look at a 13b TWM manifold the other day,it is very well made.
The 12a one should be very good too.
Looking forward to it.
Kind regards
Carl

[MikeLMR]

Bill said yu were impressed, I think this one may not be ported for a euro 12a though.

[MikeLMR]

Well after a mad rush to finish the rally car for an event I have some spare time to work on this again + my manifold arrived.

As eventually happens with most things I own I started by taking the TB\'s to pieces to work out what could be removed and how easy its going to be to respace them.  I also removed the traction control throttles as I don\'t think we will be using them at this point in time.

onto the photos ... stripped down TB\'s after reassembly (note the lack of fuel rail + holes left by secondary throttle shaft (got to block that up somehow)

[MikeLMR]

Manifold and TB\'s in comparison, note the centre spacing on the TB\'s which is 80mm and the manifold which is 90mm, I will have to extend the linkages between each TB and fit a 10mm spacer to the cast lugs to make them fit the manifold (which is for twin 45\'s)

[MikeLMR]

Linkages that will require respacing, I think I will just get a "tag" of metal welded on to sort this out.

[MikeLMR]

Another view of the linkages

[MikeLMR]

The injectors, I am going to need to find a fuel rail to suit the new spacing. As Bill pointed out this should be the same as any other DCOE TB so I may be able to use one off the shelf.

Is the interface on these injectors a standard fitting ? or am I going to be making my own fuel rail out of that universal section you can buy ?

Cheers ~ Mike

[MikeLMR]

oh an the culprit behind loosing all spare time for a month or so

[MikeLMR]

some more usefull links (for my own reference too )

Respaced TB\'s (same idea I had)

http://members.home.nl/g.h.berkhoff/throttle.htm

VW\'s with Suzuki ITB\'s

http://forums.vwvortex.com/zerothread?id=958976

http://forums.vwvortex.com/zerothread?id=942528&page=2

Honda Engines with Suzuki ITB\'s

http://honda-tech.com/zerothread?id=775280&page=17

Suzuki parts Microfiche

http://www.ronayers.com/fiche/getdesc.cfm?man=su

OEM information on Keihin Injectors

http://www.keihin-us.com/inje.html

[MikeLMR]

The standard Suzuki method of fitting the TB\'s to the head might come in usuefull too (look at the flange pattern!) It\'d be a miracle if they bolt up to DCOE flange but I\'m sure somthing can be sorted if not

[travellinbob]

hey, wow, awesome way to inject your 12a. I used to own a 13b manifold for twin down draft 40mm webers but injection is soooo much easier to control and make do what you want.
  are you an engineer by any chance?

[MikeLMR]

Draughtsman at the moment but only really by job title (and wage:rolleyes: :reallymad )

I can\'t take credit for the idea as its Bill Shurvinton that led me astray I\'m quite enjoying the project now, currently looking at lathes so I can make some parts (mmmmmmmm new toy = )

[Wav]

Good thread Mike, I like what you are doing:cool Keep us up to date as you progress.

Regards,

Paul:)

[MikeLMR]

to answer my own question , yes the injectors are a standard fitting (well standard to Keihin) after a quick measurement and google I have found the relevent drawings on Keihins own website. (only relevent for the fuel rail hole size)

Can\'t find any part numbers on the GSXR injectors to find out the impedance and other usefull numbers though :confused:

I think they are KN4 type injectors going on the drawings ?

(added Keihin link to the usefull links post)

[colonelk]

Hi there, I didnt realise the Megasquirt was capable of running a Rotary. But then I know nothing! LOL

Thought you may enjoy this video tho..... although you\'ve probably seen it!

Scoots rotary on 4 TBs
http://www.valvers.com/downloads/videos/4re.mpeg