ITBs

I've been collecting parts for my build based on a couple I saw on 'that other forum'
I will do a build thread when I finally get the car back on the road. The one area I feel will be a challenge is the throttle cable connection.

I just bought a Bogg Brothers manifold and some GSXR1000 tbs, so may be heading back to TBs on my car

Russell

There's a few different options, but I'll list what you need for the DIY route (or rather, what I needed ):

Intake Manifold 
There's a few options here (more options for the 1.8 over the 1.6 because of how the injectors mount) but I went with a cut down inlet manifold from my MX5, made up some flanges and got them welded on:




Throttle Bodies
Ideally you want some throttle bodies that match the spacing of the inlet ports and some way of dealing with the transition from an oval port to a circular throttle body.  I used Triumph TT600 ones, along with the rubber boots from the bike (this was before the flanges were welded):



You can see the boots also have a convenient vac port coming out of them.  You'll need something like this for plumbing in your MAP Sensor for your engine management.  You can also see the vTPS on the end of the throttle bodies - you will probably need some kind of vTPS sensor, the ones on most bikes should work just fine.

IAT Sensor
Fairly straight forward - you'll need something to read the air temperature.  There's a bunch of generic GM parts on eBay for less than a tenner.

Engine Management
This is the other main part.  You've got a ton of options, and I'm not going to list them all here.  I bought a Megasquirt 2 kit from DIYAutotune (https://www.diyautotune.com/product/megasquirt-ii-programmable-efi-system-pcb3-0-kit-w-black-case/) and spent a week soldering it all together.  Another week of troubleshooting, and I had the car up and running.  If you're not confident with the electronics side of things, you can get an assembled version - however you're probably going to have to make up a wiring loom at some point to include the additional IAT sensor.

Wideband (optional, but not really optional).
Technically you don't *need* a wideband, but you're basically making your life so much harder if you don't.  Your narrowband on the car will tell you if the engine is rich or lean, but won't tell you by how much.  A wideband gives you an accurate AFR reading, and feeds straight into the ECU, allowing you to do some basic auto tuning to at least dial in your fuel tables.  

I can write more about the electronics/tuning side of it if you're interested; it'll all be Megasquirt based though.

Skuzzle is doing a fair few Jenvey ITB builds these days. Seems very popular despite the cost.

The Jenvey kits look awesome.  Do they come with injectors and all the required sensors?

I'm using Daytona 600 bodies on my build they have a bore of 42mm which is the same as the recommended Jenvey bodies!

What engine have you got there?