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Author Topic: Pressure testing  (Read 1069 times)

Offline rio_gti

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Pressure testing
« on: 02 September 2014, 23:50 »
Hey all!!! (Again!!!)

When doing a pressure test, if I block at the tb and pressurise from just after the turbo, it holds.
But, if I block the tb and pressurise from the tip, I get a gloopy bubbling sound from the back of the engine (sounds like its coming from in the sump  :undecided: )

Is this normal?
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2000 GTI 1.8t ARZ, S2000 filter, DSG intake, Forge 007 dv, Catch can, R-tech custom remap, 3" Supersize Silicone TIP, Powerflex dog bone, 'The Beast' FMIC, Ultimate delete, LCR fuel pump, 3" Turbo back, K03 hybrid, Ported Manifold, S3 injectors, 80mm maf = 280bhp 270lbft :evil:

Offline Dalo Harkin

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Re: Pressure testing
« Reply #1 on: 03 September 2014, 12:38 »
you got a modern pic of the bay?

surely any bubbling would be the pressure making the oil in the sump bubble?
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline rio_gti

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Re: Pressure testing
« Reply #2 on: 03 September 2014, 14:44 »
Well that's what I thought but is air meant to get it there via (I think) the turbo?

I'll get some pics soon!!!
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2000 GTI 1.8t ARZ, S2000 filter, DSG intake, Forge 007 dv, Catch can, R-tech custom remap, 3" Supersize Silicone TIP, Powerflex dog bone, 'The Beast' FMIC, Ultimate delete, LCR fuel pump, 3" Turbo back, K03 hybrid, Ported Manifold, S3 injectors, 80mm maf = 280bhp 270lbft :evil:

Offline Tezmax

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Re: Pressure testing
« Reply #3 on: 21 September 2014, 17:46 »
Cut my pressure tester down to a reasonable size and plugged into tip and it held preesure until dip stick or oil filler cap was removed then i got the gurggle/bubbling sound. Blew some smoke through the system and came out oil filler cap only. Does this mean i have no vac leaks?
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1.8t Aum. forge 007p. 17" bbs. R-tech stage 1 map.205/235. catch can.

Offline rio_gti

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Re: Pressure testing
« Reply #4 on: 21 September 2014, 21:39 »
You still got the hockey puck etc all connected?
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2000 GTI 1.8t ARZ, S2000 filter, DSG intake, Forge 007 dv, Catch can, R-tech custom remap, 3" Supersize Silicone TIP, Powerflex dog bone, 'The Beast' FMIC, Ultimate delete, LCR fuel pump, 3" Turbo back, K03 hybrid, Ported Manifold, S3 injectors, 80mm maf = 280bhp 270lbft :evil:

Offline Tezmax

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Re: Pressure testing
« Reply #5 on: 22 September 2014, 00:09 »
Yep, didn't disconnect anything else. Was hoping to find a leak somewhere but it doesn't appear to have one.  :angry:

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1.8t Aum. forge 007p. 17" bbs. R-tech stage 1 map.205/235. catch can.

Offline rio_gti

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Re: Pressure testing
« Reply #6 on: 22 September 2014, 08:12 »
Makes sense.... As my breathers are straight to atmosphere that's why my 'bubbling' is straight away, so if I were to block them both it should hold pressure in the block (didn't think this was any good to do  :undecided: )

Did you block the pipework at the tb?
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2000 GTI 1.8t ARZ, S2000 filter, DSG intake, Forge 007 dv, Catch can, R-tech custom remap, 3" Supersize Silicone TIP, Powerflex dog bone, 'The Beast' FMIC, Ultimate delete, LCR fuel pump, 3" Turbo back, K03 hybrid, Ported Manifold, S3 injectors, 80mm maf = 280bhp 270lbft :evil:

Offline Tezmax

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Re: Pressure testing
« Reply #7 on: 22 September 2014, 17:42 »
Held pressure under my own breath and it blew back when releasing me gob :sick: Didn't connect my compressor with regulator yet as not totally confident in what i'm doing.

Left tb alone, i guess it would be in the closed position when engine not running but would that be air tight :undecided: I wouldn't of thought so

Finished product:

« Last Edit: 22 September 2014, 18:05 by Tezmax »
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1.8t Aum. forge 007p. 17" bbs. R-tech stage 1 map.205/235. catch can.
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