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Sucked Shut Hose Counter Meassure

Torques

By Torques,
in Engines & Forced Induction

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Torques Mentor

Torques

Posted
Posted

Hello,

I fitted a larger hybrid turbo recently and was told that

the intake rubber hose tends to collapse under the vacuum.

I weighted my options for a replacement but could not find anything I liked or was willing to pay for.

So I came up with the following:

After taking measure I bought a 76mm aluminium hose joiner (100mm long)

I then lubricated the inside of the rubber hose with oil and slid the joiner inside the hose.

It is a very tight fit and it took me about 15 minutes to get the joiner in.

After everything looked nice I degreased the inside of the hose to get rid of any excess oil

and make the aluminium joiner less prone to slippage.

I could image using an aerodynamically more advanced profile for the joiner, but at current it does the job.

As you can see from the pictures the outside of the intake hose is a bit bulging which is not a

problem and helps airflow.

It's a quick fix to a possible issue .. cheap and efficient and non destructive :)

post-33912-0-14214500-1311098315_thumb.jpg

post-33912-0-87211100-1311098814_thumb.jpg

post-33912-0-47057600-1311098846_thumb.jpg

post-33912-0-37994800-1311098864_thumb.jpg

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https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/
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GTScotT Grand Master

GTScotT

Posted
Posted

I like this idea more than the rev210 one TBH.

I think as long as that joiner has a larger OD than the ID of the turbo snout your in business!

Would work great for any entry level highflows IMHO. Good work.

Torques Mentor

Torques

Posted
  • Author
Posted

The lower bend will still suck shut at around 250kw but that setup will work quite well up till then. :thumbsup:

Hi there,

The lower end looked quite rigid to me ...

Does it really collapse > 250KW?

And if the vacuum is really that high, does't that mean a huge restriction?

Cheers from London ..

scotty nm35 Grand Master

scotty nm35

Posted
Posted

Hi there,

The lower end looked quite rigid to me ...

Does it really collapse > 250KW?

And if the vacuum is really that high, does't that mean a huge restriction?

Cheers from London ..

The vacuum must be immense, I had to laugh at GuiltToy's video of the pod filter collapsing on the dyno.

http://www.skylinesaustralia.com/forums/topic/287968-guilt-toy-in-georgia-former-soviet-union/page__st__240

I would love to modify my stock airbox to fit two panel filters, or design a new one. That should halve the vacuum I guess.

Torques Mentor

Torques

Posted
  • Author
Posted

I will see how the hose does on the dyno.

Maybe another tube might help ..

Heat shielding would also be an option .. though the pipe get constant fresh air from the sucktion ..

Is there an alternative to the whole setup?

(While keeping the airbox?

its a combo of heat from the manifold heat softening the rubber and the vacuum on that

mine is sleeved twice with 3 inch exhaust pipe, at both sections of ribbing

Torques Mentor

Torques

Posted
  • Author
Posted

Funny video ..

Maybe the airfilter was an el chepo type with no proper mechanical foundation?

The vacuum must be immense, I had to laugh at GuiltToy's video of the pod filter collapsing on the dyno.

http://www.skylinesaustralia.com/forums/topic/287968-guilt-toy-in-georgia-former-soviet-union/page__st__240

I would love to modify my stock airbox to fit two panel filters, or design a new one. That should halve the vacuum I guess.

Harey Veteran

Harey

Posted
Posted

Is there an alternative to the whole setup?

(While keeping the airbox?

In this thread Stevoss made up a custom metal intake pipe to connect the airbo to the turbo intake:

http://www.skylinesaustralia.com/forums/topic/370985-cold-air-box-r34-gtt-anyone-know-where-to-get-one-to-fit-return-flow-coolerstock-cooler/

As a few people said in the linked thread, that is not easy to do as it must join the airbox at exactly the right location on the right angle.

I thought Hypergears example was to connect a pod filter not the stock airbox??

southern_tango Proficient

southern_tango

Posted
Posted

So using a couple of 3" aluminum pipping should help to stiff the intake rubber ...nice have some from work and they don't have ribsat the end may give it a go and put one in the middle and one in the elbow before the return of the BOV ,but my main compain is if they are going to move for not having the ends ...

pipster11 Grand Master

pipster11

Posted
Posted

So using a couple of 3" aluminum pipping should help to stiff the intake rubber ...nice have some from work and they don't have ribsat the end may give it a go and put one in the middle and one in the elbow before the return of the BOV ,but my main compain is if they are going to move for not having the ends ...

its all under vacuum so you just won't be able to pressurise the system pre-turbo to do boost leak tests

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