T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

With Turbo and Super charging you can create massive horsepower with vw motors.

Moderator: seabeebuggy

Post Reply
User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Thu Mar 01, 2018 2:38 am

Hi Walter, yes its the display.. if it was the sensor I agree with you, the engine was running way to rich.. I think I will score a Autometer AFR next month..
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Fri Mar 09, 2018 3:52 am

Ok got it back running..
Idle = great..

But it doesnt rev.. if you want to rev the engine it dies completely.. No black smoke.

I got 155 mains, and 170 air.. no luck.. Tried also 135 vs 200 air or 155 va 200 air..

I need to put smaller venturi's, I got now 36mm , I think i will go to 32.. Looks like the airspeed is to slow in the intake...

Any recommendations?
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

GARRICK.CLARK
Posts: 596
Joined: Fri Aug 26, 2011 12:01 pm

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by GARRICK.CLARK » Fri Mar 09, 2018 1:44 pm

If it dies and no black smoke then it needs more fuel surely.

User avatar
petew
Posts: 3748
Joined: Sat Oct 07, 2006 6:05 pm
Location: Sydney/Australia
Contact:

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by petew » Fri Mar 09, 2018 4:45 pm

^ That's what I was thinking too. Is something blocked?

User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Wed Mar 14, 2018 7:56 am

The carb is ok, it's rebuild now, and same error. I really think the venturi is to big. I will order some 32mm.
At the moment I'm in Swiss, but when back to NL we will continue.

Thanks.
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Thu Mar 22, 2018 2:23 am

Ok got the 32mm venturi's in. Much better , I was able to drive true the street. Still some popping and black smoke.

Then I checked the engine , and again a olie leak at the melling oil pump.. also my carb is leaking fuel everywhere due to the boost pressure.

Since I have not much time and need to got for MOT, I will put back the 1600cc engine..

the turbo engine will go into a corner, because I'm done with it at the moment..
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

User avatar
rubenski
Posts: 892
Joined: Mon Jun 30, 2014 5:28 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by rubenski » Thu Mar 22, 2018 2:26 am

Better to be blown than to suck!

User avatar
panel
Posts: 3719
Joined: Sun Sep 24, 2000 2:01 am
Location: Victoria B.C. Canada
Contact:

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by panel » Thu Mar 22, 2018 4:11 pm

I know I'll catch sh*t for this but can you turn down the boost enough that it won't leak?
Subaru JDM EJ20 Turbo bus
Built by Germans powered by Japanese and brought together by Canadians

66brm
Posts: 258
Joined: Mon Apr 12, 2010 8:55 pm
Location: Perth, Western Australia, The Southern Hemisphere

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by 66brm » Fri Mar 23, 2018 7:10 am

:lol: Moderators... Clean up in aisle 3, really though I don't think the oil leak is boost related, those melling pumps leak, it's a known problem

User avatar
Piledriver
Moderator
Posts: 21917
Joined: Sat Feb 16, 2002 3:01 am
Location: Van Alstyne, Texas

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Piledriver » Fri Mar 23, 2018 9:06 pm

...unless you oring them.
It's really required anyway since they don't expand with the block like an aluminum pump.

Oil pukage can definitely be boost related, depends on the blow-by that gets by the valve guides and rings.
If you have more airflow from blowby than the evac setup can deal with, you are going to have oil coming out of places you didn't know were places ...
I, for one, regularly embrace our new robot overlords, as I am the guy fixing the robots...

User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Mon Mar 26, 2018 1:13 am

@ Panel, I think you mean the carb? IT's at 0.3 bar ( I will go for EFI next year..)

@ 66BRm, not its the casting of the melling pump.. will machine a O ring in it..

@ Pile, I had no issues with boost and Oil :)

1600 kadron engine is in, almost MOT ready :)
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

User avatar
panel
Posts: 3719
Joined: Sun Sep 24, 2000 2:01 am
Location: Victoria B.C. Canada
Contact:

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by panel » Mon Mar 26, 2018 6:29 pm

Udo Airbus wrote:
Mon Mar 26, 2018 1:13 am
@ Panel, I think you mean the carb?
Oh I know you meant carb , hence the leak. You won't leak fuel with EFI at 0.3Bar.

Oil pump info here...... viewtopic.php?f=15&t=108777
Subaru JDM EJ20 Turbo bus
Built by Germans powered by Japanese and brought together by Canadians

User avatar
Udo Airbus
Posts: 165
Joined: Thu Oct 23, 2014 8:22 am

Re: T4 1971cc - Blow Through Turbo - VW Splitscreen - NEW Movie @ page 13

Post by Udo Airbus » Tue Jun 05, 2018 6:26 am

Ok All, I'm back. _ thanks for the support so far!

I made a long story but was unable to post, since i got some errors of the forumboard.. drafts did also not work. So here is the short version.


For now I made a new test stand to run the engine outside the car.
Directly I saw a fuel leak on boost at the choke part of the weber.
I plugged the choke channels see picture, and made a blind plate.
Now the carb is not leaking fuel anymore under boost! I can also now open full throttle, and it revs much better! :)

Next step is to make the oil filler a bit longer and add a second engine case breather..
IMG_3767.JPG
Carb choke block
IMG_3760.JPG
test stand..


To be continued...
You do not have the required permissions to view the files attached to this post.
VW T1 1964 - Mouse Grey - Pearl White OG paint

Bagged, Porsche steeringrack/brakes..IRS, AMR Supercharged 1600 (sold) building a 1971cc EFI turbo/supercharged engine

Post Reply