Sonic Boom

iTrader: (11)

Thought I's share with you a few photo's of getting my new DBW setup fitted to the 3 Door:

Bought a brand new AS Inlet which I have to say is an exact copy of my genuine Hart one apart from the "Hart" and "Auto Specialists" marks you couldn't tell them apart. I'll do some side by side comparisons once I remove the Hart Inlet.

Firstly started off with a 15mm thick slice of 6" round alloy bar which cost me all of £6.20 from Forward Metals in Birmingham.
I originally wanted to use alloy square bar (to save cutting) but the 4 leg chuck has broken at Dyno Torque so round bar it is.

Firstly we machined a 76mm hole in the centre which is the inside diameter of the RX8 Throttle Body:



Then drilled and tapped the bolt holes for the RX8 TB, harder than you think on round bar:



Then cut down the sides to match the TB (not square I know but then neither is the rear of the TB) as the rear of the steeper motor over hangs the flange.



Then welded the new TB flange to the AS Inlet:



As you can see there is some over lap from the old flange as the inlet is only 66mm:



So then about an hour with the Die Grinder and hey presto all ported and smoothed out:





And now with the RX8 Throttle body bolted up:





I've got to make a custom gasket for the TB yet as on the RX8 the inlet has funny shaped O-Ring.

I'll update some more next week when we fit the DBW Inlet and throttle pedal and compete the wiring then it's off for mapping on the 19th February.

Rich

lacey

I have dbw on mine
Ain't used it yet I only really got it for it to blip the throttle on down changes lol
But it does tidy things up
A z350 pedal nearly fits straight in the std pedals place to

markk

iTrader: (2)

The Bosch throttle body used on alot of vehicles (cant remember part numer) fits directly on

Mark

Sonic Boom

iTrader: (11)

I did look at the Nissan Pedal and Throttle Body, as we had a TB lying around but it ended up being fitted to a Mk2 Golf in the end.

We went with the RX8 in the end because they are a nice compact 3" TB and are so cheap you can get them for as little as £10 and the same for the Pedal too.

Rich

JonnyBravo

This one was a direct fit on a hart inlet.

james kiely

iTrader: (5)

top job rich

lacey

I am on jenvey itb so I got a jenvey dbw motor as was recommended to use the z pedal

Sonic Boom

iTrader: (11)

I did have a look at some of the Bosch ones but they all seemed to be £150 plus for a second hand one, and I really wanted a 3" TB

Cheers mate

I was having a good look at these a couple of weeks ago at the Autosport Show, I'd love to go down that route too but funds won't allow at the moment.

Rich

Caddyshack

I wonder if you could get it mapped to go flat through the Cramer curves if you lose your bottle...just link it up to a Tom tom lol

M K

iTrader: (9)

What tb did you use on warrens then mate?

Sonic Boom

iTrader: (11)

You can get to do the opposite and lift the throttle in conjunction with the traction control feature

I always lift through Craners

Rich

Hellraiser

looking good Rich i'll be keeping my eye on this

Hellraiser

What tb is that?

JonnyBravo

BMW. I couldn't tell you off what model though.

Sonic Boom

iTrader: (11)

Cheers mate, I see you're from Wombourne do you ever see a White 3 Door around with the reg 15 DP ?

Rich

Sonic Boom

iTrader: (11)

Got it all finally wired up today and running, it's absolutely excellent, extremely responsive you wouldn't know it was DBW it idles perfectly.
Looking forward to having it mapped on the 19th, here's a couple of photos not the best as it was well dark after we'd finished;







Rich

jonfoc

Great work. Is there any particular part number for the throttle body?

Sonic Boom

iTrader: (11)

If you go on eBay and just search for "RX8 Throttle Body" and "RX8 Throttle Pedal" they are all the same mate, some of the throttle pedals don't have the silver heel and toe cover but otherwise they are identical.

Rich

jonfoc

I've got a 350z pedal but will look for an RX version too.

Sonic Boom

iTrader: (11)

The RX8 pedal has a really nice fell to it plus mine only cost £14 delivered with a plug.
RX8 parts are so cheap you can buy a whole car for as alittle as £200 with a blown engine.

Rich

Focosmitch

iTrader: (1)

Im really considering dbw!! This thread just adds to my considerations lol!!

Lacey, any more info in this jenvey setup?

Jonboy, can you find out what bmw its from?

Hellraiser

where do you get loom from? is t controlled via ECU?

Focosmitch

iTrader: (1)

Also, looks as though they have chamged the as inlet in terms of looks, they now have the ribs in them like the hart!! Gutted as i bought one a few months back and the new style looks alot nicer

Sonic Boom

iTrader: (11)

It's all custom made by Nod @ Dyno Torque, yes the ECU controls the throttle body.

Side by side my genuine Hart is identical to the AS bar the name branding.

Rich