Putting a turbo on the ol' 1915

With Turbo and Super charging you can create massive horsepower with vw motors.
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madmike
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Re: Putting a turbo on the ol' 1915

Post by madmike » Tue Apr 28, 2020 7:27 am

:oops: forgot u use a internal wastegate

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Tue Apr 28, 2020 8:37 am

Haha, I was actually considering tapping right into the turbo outlet before the boost coupler. I didnt know if the smaller diameter would cause issues though. The charge pipes are already only 2", the turbo outlet is 2" OD but the ID is tiny.

Eh, ordered 2 60ml nozzles and a splitter to run two of them, seems like the safest bet. Im liking this, been reading a lot and learning new stuff.

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Sun May 03, 2020 5:17 pm

Okay, so water injection install is complete and pretty clean looking.

Installed 2 60ml/min nozzles in either side. Set the boost solenoid thing to 6psi. Took a couple of tries to get the system to work but once I did, huge improvements. Used a 50/50 mix of denatured alcohol and distilled water for about 7 dollars a gallon. No changes in power/driveability noticed, other than drops in intake temp its like its not there. I even milked the throttle to see if I could sense when it turns on but I cant (other than temp gauge)

No alch:
Outside temp: 70*f
Boost: 10psi
AFR: 11.8-12.2
Charge Temps: 175-180*

50/50 Alch:
Outside temp 70*f
Boost: 10psi
AFR: 11.1-11.3
Charge temps: 85-89*f
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buguy
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Re: Putting a turbo on the ol' 1915

Post by buguy » Sun May 03, 2020 5:48 pm

Nice! What kind of timing?

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Sun May 03, 2020 5:59 pm

I havnt adjusted anything yet, fuel, spark, or boost. So right now its at 24* max which is what it was without the injection.

Clonebug
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Re: Putting a turbo on the ol' 1915

Post by Clonebug » Sun May 03, 2020 6:42 pm

Nice...I'd try bumping up the timing 1-2 degrees at a time where the high load area is right when you hit full boost. That should be around 3200 rpm or thereabouts I'm guessing.
I'll bet at those temps you might be able to hold 28-29 degrees timing. Just go at it slow and listen carefully for detonation. Just watch your intake temps carefully because as the ambient temps go up so will your IAT's after boost.
I would leave the AFR's alone for now........that is probably helping a little on the temps.
Stripped66 wrote:The point wasn't to argue air temps with the current world record holder, but to dispel the claim that the K03 is wrapped up at 150 HP. It's not.

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Sun May 03, 2020 7:25 pm

Thanks for the suggestion, and your help with the system overall. Before your post I pretty much dismissed the idea. I was curious where ballpark spark would be. I actually ordered a new fuel pump that can put out 25 psi max, so I was thinking of increasing the boost to 1 bar. Small increments at a time while watching AFR

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buguy
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Re: Putting a turbo on the ol' 1915

Post by buguy » Sun May 03, 2020 7:36 pm

I agree. Start bumping the timing. Just listen carefully. I would certainly start inching up boost too. Boost starts happening fast when you get to the 12-15 psi range.....so be careful.

madmike
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Re: Putting a turbo on the ol' 1915

Post by madmike » Mon May 04, 2020 9:29 am

i'm jealous,haven't even started to tune mine to Wi, :lol:

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Mon May 04, 2020 5:00 pm

Well get on it!!

Made a bracket and installed a little manual boost controller. Verified that it doesnt increase boost when at the minimum setting. Fuel pump should arrive soon.
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madmike
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Re: Putting a turbo on the ol' 1915

Post by madmike » Tue May 05, 2020 6:03 am

I'm ready but this michigan weather :shock: gonna snow up here by friday :roll: :( :lol:

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Sun May 10, 2020 3:45 pm

Anyone have a fuel pump suggestion that will work with my regulator from CB performance? I got this one but uhhh, its a big boy. Supposedly good for 25 psi but I kinda expected it to be around the size of the holley blue. Feels weird necking down a -16AN to a 3/8 fuel line lol.
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panel
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Re: Putting a turbo on the ol' 1915

Post by panel » Sun May 10, 2020 5:03 pm

Can you go with a Bosch 044 or a Walbro ?
'65 Bus with a JDM Subaru EJ20 Turbo
Built by Germans powered by Japanese and brought together by Canadians

Therealkoop
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Re: Putting a turbo on the ol' 1915

Post by Therealkoop » Sun May 10, 2020 5:25 pm

Maybe! I dont know if the pressure on something like that is simply too high or not. I think those inline universals are running 65+ PSI!

EDIT: Sticky states an E2000 ford pump works fine, Ive seen some sources online saying it works with the CB performance reg!

Bruce.m
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Re: Putting a turbo on the ol' 1915

Post by Bruce.m » Mon May 11, 2020 1:08 pm

You need to think about how pressure works in a system like that.

The fuel pump will have a max psi rating. That’s what it will reach if you push into a dead-end blocked pipe. If you push fuel into a bucket, the output psi will be zero as flow is unrestricted.

The regulator places a restriction in the flow back to the “bucket” (fuel tank), so it maintains a certain level of pressure in the pipe & fuel rail. The regulator adjusts the size/amount of restriction to maintain the required pressure level. If injectors are flowing a lot of fuel into the engine, the regulator will reduce the amount of fuel flowing back to the tank and similarly, will let more return to the tank when demand from injectors are low, to keep pressure at the desired level at the injectors.

There will be some “matching” of components required. For example if you fit a huge pump that feeds enough flow for a jet engine or ship, then a small regulator (or even return pipe to tank) may cause excess pressure at the injectors because the flow back to the tank doesn’t have enough capacity. Or, a pump with a max psi of 3bar (like older bosch unit), will never hit 5bar at the injectors, even if you fit a 5bar regulator. The regulator may shut and stop all flow back to the tank, but the pump will top out at 3bar (& probably overheat).

Hope that’s helpful?

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