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Dpcunningham
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Age: 54
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Joined: 16 Sep 2016
Posts: 496
Location: West Yorkshire
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 Posted: Sun Feb 26, 2017 21:00 Post subject: Boost gauge fitting |
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I'm currently in the process of fitting a Boost gauge on my 2.8 pajero
Just not sure if there is a difference between petrol and diesel gauges
Also do I connect to waste gate pipe
Any replies or information is much appreciated
Thanks in advance |
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| Posted: Sun Feb 26, 2017 21:00 Post subject: Google Ads keep the POCUK free to join! |
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Roadrunner2110
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Joined: 08 Dec 2010
Posts: 2471
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| Posted: Sun Feb 26, 2017 21:40 Post subject: Re: Boost gauge fitting |
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| Dpcunningham wrote: |
I'm currently in the process of fitting a Boost gauge on my 2.8 pajero
Just not sure if there is a difference between petrol and diesel gauges
Also do I connect to waste gate pipe
Any replies or information is much appreciated
Thanks in advance |
Turbo boost is turbo boost so there is no difference. You need to connect to the manifold somehow whether a new tapping or an existing tube into the manifold. I haven't fitted one to mine but it is straightforward I believe. Turbo boost should be measured in the intake manifold and not at the waste gate. |
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Dpcunningham
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Location: West Yorkshire
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| Posted: Sun Feb 26, 2017 21:50 Post subject: Boost gauge fitting |
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| Thanks for your reply roadrunner! |
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peteinchad
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Location: UK
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| Posted: Mon Feb 27, 2017 5:56 Post subject: |
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My boost gauge is connected here
I certainly didn't drill my manifold.
Remove the intercooler and you will see a metal pipe going round the front of the rocker cover. There is a rubber pipe attached to the end of the metal pipe (I changed mine to braided pipe) - put a Tee into that rubber pipe and connect the boost gauge to that.
Petrol gauges have the zero half way round the scale because petrol engines produce a vacuum. I used a petrol gauge - it still works as long as the positive side reads above 1.5 bar as the maximum boost on these engines is about 0.9 bar. |
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Dpcunningham
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Age: 54
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Location: West Yorkshire
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| Posted: Mon Feb 27, 2017 8:28 Post subject: Boost gauge fitting |
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Thanks Pete
For the advice and picture great help |
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Simon_W
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Posts: 4881
Location: Watford
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| Posted: Mon Feb 27, 2017 11:34 Post subject: Re: Boost gauge fitting |
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| Roadrunner2110 wrote: |
Turbo boost is turbo boost so there is no difference. You need to connect to the manifold somehow whether a new tapping or an existing tube into the manifold. I haven't fitted one to mine but it is straightforward I believe. Turbo boost should be measured in the intake manifold and not at the waste gate. |
Roadrunner 2110 is correct in that ideally you want to know what the boost is as close to the inlet valves as possible. But personally I'd be concerned about swarf getting into the inlet manifold if you have to drill and tap it. I wouldn't do that without removing the manifold, and I'm not sure it would be worth it.
Putting a T in the pressure line as per Pete's suggestion will give you a reading that's perfectly adequate for the purpose. It's also the way that most people have done it, so it's better for comparison. |
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Dpcunningham
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Age: 54
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Joined: 16 Sep 2016
Posts: 496
Location: West Yorkshire
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| Posted: Mon Feb 27, 2017 11:50 Post subject: Boost gauge fitting |
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Yep think Pete,S way is better also he,S running the car so
Obviously it works that way |
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Simon_W
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Location: Watford
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| Posted: Mon Feb 27, 2017 11:53 Post subject: Re: Boost gauge fitting |
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| Dpcunningham wrote: |
Yep think Pete,S way is better also he,S running the car so
Obviously it works that way |
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Roadrunner2110
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Posts: 2471
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| Posted: Mon Feb 27, 2017 13:54 Post subject: Re: Boost gauge fitting |
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| Simon_W wrote: |
| Roadrunner2110 wrote: |
Turbo boost is turbo boost so there is no difference. You need to connect to the manifold somehow whether a new tapping or an existing tube into the manifold. I haven't fitted one to mine but it is straightforward I believe. Turbo boost should be measured in the intake manifold and not at the waste gate. |
Roadrunner 2110 is correct in that ideally you want to know what the boost is as close to the inlet valves as possible. But personally I'd be concerned about swarf getting into the inlet manifold if you have to drill and tap it. I wouldn't do that without removing the manifold, and I'm not sure it would be worth it.
Putting a T in the pressure line as per Pete's suggestion will give you a reading that's perfectly adequate for the purpose. It's also the way that most people have done it, so it's better for comparison. |
You are right Simon, but at present my engine is out of the truck and the head and manifolds are off so I can put a metric tapping into the manifold safely for the future but I wouldn't fit a boost gauge at present as it isn't probably necessary and can check boost easily for set up with a 2 bar gauge and tube after I fit the new CHRA core hybrid turbo. |
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Dpcunningham
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Age: 54
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Location: West Yorkshire
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| Posted: Thu Mar 02, 2017 17:30 Post subject: Boost gauge fitting |
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Pete when you fitted your boost gauge did you use any of the
Pipe supplied with boost gauge
Cheers |
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peteinchad
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Joined: 07 Jan 2013
Posts: 15079
Location: UK
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| Posted: Thu Mar 02, 2017 17:45 Post subject: |
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| The pipe with mine was a hard plastic - so I pushed it into the braided rubber pipe and used a small jubilee clip to hold it. |
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Dpcunningham
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Age: 54
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Posts: 496
Location: West Yorkshire
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| Posted: Thu Mar 02, 2017 20:33 Post subject: Boost gauge fitting |
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| Pete can you remember what size the braided hose was you used |
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peteinchad
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Posts: 15079
Location: UK
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| Posted: Thu Mar 02, 2017 20:47 Post subject: |
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| 4mm inside diameter iirc |
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