Jump to content
SAU Community

Bosch 82mm DBW Throttle Body - School me

TurboTapin
 Share

Recommended Posts

TurboTapin Experienced

TurboTapin

Posted
Posted (edited)

Purchased a Bosch 82mm throttle and 350Z pedal amongst other things to go drive by wire. I know they sell a range of different adaptors for the throttle body (Plazmaman, Tarks, etc.) but originally how was this throttle body mated up to a pipe? How was that little 1/2" flange meant to be used? Is the chamfer for an O-ring? 

Couldn't find any information online and was very curious...

 

 

BOSCH-82-DBW-5.jpg

Edited by TurboTapin
  • TurboTapin changed the title to Bosch 82mm DBW Throttle Body - School me
joshuaho96 Veteran

joshuaho96

Posted
Posted (edited)

Looks like the back of it is just flat, so you'd have a gasket and then some bolts that hold it to the intake. If it's anything like the other DBW setups I've seen it's just a hose and hose clamp that goes over the front of the throttle body and the lip is there to keep the hose from slipping.

Edited by joshuaho96
TurboTapin Experienced

TurboTapin

Posted
  • Author
Posted
On 4/18/2022 at 8:47 PM, joshuaho96 said:

Looks like the back of it is just flat, so you'd have a gasket and then some bolts that hold it to the intake. 

I meant the other end of it. Where a pipe would mate up to it and not the intake manifold. 

TurboTapin Experienced

TurboTapin

Posted
  • Author
Posted
On 4/18/2022 at 8:47 PM, joshuaho96 said:

Looks like the back of it is just flat, so you'd have a gasket and then some bolts that hold it to the intake. If it's anything like the other DBW setups I've seen it's just a hose and hose clamp that goes over the front of the throttle body and the lip is there to keep the hose from slipping.

I doubt it. The chamfer and the lip thickness would not allow a pipe to be clamped on, not without slipping off anyways. 

joshuaho96 Veteran

joshuaho96

Posted
Posted (edited)
On 4/18/2022 at 5:54 PM, TurboTapin said:

I doubt it. The chamfer and the lip thickness would not allow a pipe to be clamped on, not without slipping off anyways. 

https://www.bosch-motorsport.com/content/downloads/Raceparts/Resources/pdf/Data Sheet_68749835_Electronic_Throttle_Body.pdf

It's really strange to me that their drawing here shows what I would expect, which is a lip to keep an intake pipe from slipping off and a flat section for sealing properly. This is 0280.750.101. Digging deeper into it apparently this is not what is being sold widely, rather it's whatever is being used by Porsche and other vendors. Looking at the EPC number 3 in this diagram is the pipe that connects up to the front of the throttle body:

image.thumb.png.eeda8bbba9c8fc89b19457d3412b8a28.png

Edit:

If you look at this guide showing how they clean the throttle body it's clear to me that the pipe has a lip in it and then a hose clamp that applies pressure to keep it from pulling off: https://www.planet-9.com/threads/how-to-throttle-body-cleaning-and-gdi-intake-cleaning.248159/

image.thumb.png.eea56a9f44a7b8167f57ce76ab5b5944.png

Edited by joshuaho96
  • Like 1
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
On 19/04/2022 at 11:21 AM, r32-25t said:

In naturally aspirated form they’d be fine with a hose clamp, in a turbo application you’re better off with one of the adaptors you mentioned 

this!

I use a TAARKS adaptor on mine, seems to like 2bar of boost.

 

  • Like 3
joshuaho96 Veteran

joshuaho96

Posted
Posted
On 4/19/2022 at 6:23 AM, TurboTapin said:

Thanks guys! Very informative.  I never thought of N/A cars... only had boosted applications in mind. I'll definitely be purchasing an adapter. 

The design seen in the OEM part would definitely not pop off even under boost. Pretty substantial lip with a hose clamp to apply pressure to keep it from moving. The trouble is finding an aftermarket pipe that would replicate that design feature.

robbo_rb180 Grand Master

robbo_rb180

Posted
Posted
On 4/20/2022 at 8:41 AM, joshuaho96 said:

The design seen in the OEM part would definitely not pop off even under boost. Pretty substantial lip with a hose clamp to apply pressure to keep it from moving. The trouble is finding an aftermarket pipe that would replicate that design feature.

Without getting the genuine hose there is no way. 
I tried different silicone hoses & clamps. The lip isn't that big, barely there. other option is make a bracket that bolts to the intercooler pipe & pick up one of the TB bolts
 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kinkstaah
      RB25DE NEO with Haltech ECU

      By Kinkstaah · Posted

      For fuelling the Haltechs have O2WB fuel controllers. Very useful for helping tuning VE and correcting for *small* mistakes. Of course if your injector/cam/trigger/sensor data is just wrong (or for a GTT which is not a GT) then you will get impossible reactions to things. I am sure you know this already but the reason people don't typically put haltechs (or any Aftermarket ECU) on GT's is because there's practically no real gains to be had - So this knowledge won't be commonplace.
    • ChriscoDom
      Rear Sway Bar Busshings - Holden Astra TS (2002)

      By ChriscoDom · Posted

      Can someone tell me if the cracks seen in the rear sway bar bushings in these photo's is unacceptable from a roadworthy point of view?  
    • GTSBoy
      RB25DE NEO with Haltech ECU

      By GTSBoy · Posted

      Shouldn't need a "base map" for anything other than guidance to ignition tuning. You just need the engine capacity right, the injector size right, and something, almost anything, for a VE map. On an NA engine, fuelling is almost completely a function of load signal & rpm. It should run and drive with a completely flat fuel map. It will be too lean under load, but that's easily fixed. We used to tune all ECUs without any base map. There were no such things (until someone had tuned a near stock engine on one, and then they had a "base map".
    • Kinkstaah
      Duncan's V37.......race car?

      By Kinkstaah · Posted

      What did you actually buy/how much did it cost? When I got mine in like.. 2017...? 2019? the aim was to run Torque for gauges via ODB2 and things like Track Addict/Laptimers/Dashcam/Reversecam/Spotify etc. Mine never broke, but I wonder if you've got the same needs (it sounds like it). Cause I liked the idea of being able to do anything with it. That said, yours also cost 3x the cost of what I spent so... food for thought.  
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      For me there is a massive difference in manufacturer or big brand crippled android (Sony, Kenwood etc) vs the sort of thing I've installed here, which is basically just a tablet in DIN form factor with open Android, and the other model of course is mirroring - Android Auto/Carplay. I hate the locked down manufacturer and AA options where they decide what apps I'm allowed to install, including the Launcher but also importantly things like Ecutek (for this car) or Real Dash (Stagea) are not supported. Plus those crippled versions tend to be slower due to both overheads and lower spec hardware. On the other hand, when this breaks I'll likely be in trouble for support....but how is that different to owning an Infiniti anyway
×
×
  • Create New...