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No intercooler

Well this is how I want to run my 930. Without driving it. So will it be a problem.

Reason for this is the rebuilder of my 7006 has sent me footage of the turbo running on the vsr and no oil leaks visible, then disassembled and turbine and compressor sides appear dry.

So when I get it back I want to install it without the plumbing to the intercooler with the scavenge picking up from free flow from a bucket.

I want to do this so I can see for myself the oil coming out of the compressor.

Is this possible without doing any damage???

Thanks a heap
In advance.
Old 09-25-2017, 12:11 AM
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Crotchety Old Bastard
 
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You don't need to remove the intercooler to watch, clean everything and remove it after you run the engine. If there is a lot of oil in the up-pipe you have a problem.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-25-2017, 03:36 AM
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Quote:
Originally Posted by RarlyL8 View Post
You don't need to remove the intercooler to watch, clean everything and remove it after you run the engine. If there is a lot of oil in the up-pipe you have a problem.
That is what is happening Brian. After running there is oil in the up pipe. However when the turbo rebuilders run it they are not seeing the same problem and have sent me videos of this.
I just do not know where the problem is if I have normal crank case pressure and the scavenge circuit is perfect.
Old 09-25-2017, 11:00 AM
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Does the oil feed have a restrictor? Does it need one with k27?
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Turbo powa!
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Old 09-25-2017, 11:32 AM
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Quote:
Originally Posted by quattrorunner View Post
Does the oil feed have a restrictor? Does it need one with k27?
Not aware that there is a restrictor however it ran fine before the damage and rebuild.

I would like to take footage of the turbo running without the up-pipe connected. So can anyone tell me if this is possible and also not damaging.

Thanks
Old 09-25-2017, 01:25 PM
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If you're running cis system then no you can't run it like that
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Old 09-25-2017, 01:44 PM
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Crotchety Old Bastard
 
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To run the turbo without an intercooler you need to connect the air meter out pipe to the throttle.
The turbo will be sucking in and spitting out ambient air.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-25-2017, 03:14 PM
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Quote:
Originally Posted by RarlyL8 View Post
To run the turbo without an intercooler you need to connect the air meter out pipe to the throttle.
The turbo will be sucking in and spitting out ambient air.
Am I able to run it at idle with the intercooler connected and the pipe from the air cleaner disconnected???
Old 09-25-2017, 03:49 PM
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Do you have any friends with a spare K27 you could swap in its place? Hell I'm sure someone on here has an extra laying around they would loan you...
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'78 930 #441
Old 09-25-2017, 04:00 PM
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Quote:
Originally Posted by patina View Post
Do you have any friends with a spare K27 you could swap in its place? Hell I'm sure someone on here has an extra laying around they would loan you...
I would at a guess be the only 930 owner for a couple of hundred klms.
The only other person I know with a Porsche has a 365.
Old 09-25-2017, 04:57 PM
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Brando
 
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The intake needs to be sealed. In other words the throttle needs somehow to be connected without leak to the air meter.
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Old 09-25-2017, 06:00 PM
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Crotchety Old Bastard
 
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Quote:
Am I able to run it at idle with the intercooler connected and the pipe from the air cleaner disconnected???
Yes but it is tricky and probably more trouble than it is worth. The throttle position and the air meter plate deflection need to be synchronized. If you have an AFR meter you can crack the air metering plate then adjust the throttle plate until your original idle AFR returns.
If you insist on watching the turbine cold side outlet it would be easier to connect the air meter to the throttle or drill a hole in your up-pipe and stick in a remote camera lead with light.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-26-2017, 03:32 AM
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I can't remember why, but for some reason I needed to run my engine with the intercooler removed so I paid a visit to Bunnings (that'll confuse them!) and came home with a bunch of PVC fittings. After a bit of work with glue and heat gun, I ended up with this pipe which connected the turbo outlet to the throttle body. It also had connections for all the other stuff that hangs off the intercooler.
Had to tie it down with a bit of rope 'cos the boost kept blowing it off!



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Old 09-26-2017, 05:43 AM
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That's awesome! Love the rope!!
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Garen (87 930 track rat)
Old 09-26-2017, 05:46 AM
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I have tried to come with parts to plumb out the IC (and turbo) just to work on the car and have it run.

you can run it without the muffler or anything attached to the hot side of the turbo to check for oil leaks. you can even drive it that way.

I have the same turbo.
at the oil supply side to the turbo I have an adapter at the rear of the engine with a check ball in there. on the bottom side of the turbo I have a catch can about the size of a soda can.
I did the pump test a long time ago. I don't remember a lot of oil coming out of the turbo but my scavenge pump kept up.

what is going on exactly
where are you seeing oil?
check the return line for blockage
rebuild the scavenge pump.
sorry, I don't remember everything you have done.

when I filled my muffler with oil it took a long time to burn it off. man I left a smoke screen like you would not believe for a good 30 minutes. I even tried to wash it out first
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ [__] RUNNING: [__] NOT RUNNING:
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[] RUNNING:[_] NOT RUNNING:__2000 MER E320 WAGON [_] WRECKED:[]RUNNING:
Old 09-26-2017, 06:03 AM
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oh, you wont hurt anything by bypassing the turbo up pipe or remove the IC.
trouble is getting it to run if you don't plumb around it.
you could have someone start it and you work the air sensor plate by hand. its tricky, I think I tried it.
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ [__] RUNNING: [__] NOT RUNNING:
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[] RUNNING:[_] NOT RUNNING:__2000 MER E320 WAGON [_] WRECKED:[]RUNNING:
Old 09-26-2017, 06:06 AM
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Bill, that PVC pipe is the tits! Love it.

You should sell those.... 😂
Old 09-26-2017, 07:09 AM
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Quote:
Originally Posted by billjam View Post
I can't remember why, but for some reason I needed to run my engine with the intercooler removed so I paid a visit to Bunnings (that'll confuse them!) and came home with a bunch of PVC fittings. After a bit of work with glue and heat gun, I ended up with this pipe which connected the turbo outlet to the throttle body. It also had connections for all the other stuff that hangs off the intercooler.
Had to tie it down with a bit of rope 'cos the boost kept blowing it off!



Rube Goldberg eat your heart out!!!!! I love this
Old 09-26-2017, 07:10 AM
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I made one of those home depo test pipes for an Audi once anditbdidntnlast long. It was heat and pressure it couldn't take.
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Turbo powa!
1977 911s. it's cool
Old 09-26-2017, 07:34 AM
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Quote:
Originally Posted by T77911S View Post
I have tried to come with parts to plumb out the IC (and turbo) just to work on the car and have it run.

you can run it without the muffler or anything attached to the hot side of the turbo to check for oil leaks. you can even drive it that way.

I have the same turbo.
at the oil supply side to the turbo I have an adapter at the rear of the engine with a check ball in there. on the bottom side of the turbo I have a catch can about the size of a soda can.
I did the pump test a long time ago. I don't remember a lot of oil coming out of the turbo but my scavenge pump kept up.

what is going on exactly
where are you seeing oil?
check the return line for blockage
rebuild the scavenge pump.
sorry, I don't remember everything you have done.

when I filled my muffler with oil it took a long time to burn it off. man I left a smoke screen like you would not believe for a good 30 minutes. I even tried to wash it out first
Crank case pressure normal, scavenge works perfectly.
So I want to view the compressor side while running.
The rebuilder sent footage on the vsr and no oil leaks.

When on my 930 I end up with a puddle of oil in the compressor side.
Old 09-26-2017, 09:19 AM
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