T4 - Blow Through Turbo - VW Splitscreen

[Udo Airbus]

No big updates yet.. still searching for a affordable turbo.. possibly a TD05 ? or a T25..

After 3 engine cases I finally found one that's in perfect original shape

Also made myself an oil filler + dipstick and a crankcase breather on the distributor hole...

[behappy]

Hello Udo.

I am also from Amsterdam. And I have a type 4 turbo. Stil working on it. I had some oil problems so had to take it all apart. I am using a td05 16g turbo it maked 200hp at the wheels at 0.7 bar.

[blue thunder]

For a 2 liter engine with approximately 200bhp, alot of Mitsubishi TD04 framed turbo's would be more than enough. A smaller framed turbo will spool quicker and provide the low end torque you are looking for. The cam/engine combo should be just fine with such a turbo. The GT3076R would be way too large for your application (500+ bhp all day) and a GT25 is not only a bit too small, but also a quite old design.
Modern turbo's have larger compressor and turbine efficiency, which will result in lower backpressure and lower compressor temperatures.

Good luck,

Cheers Robin

(ook uit Nederland)

[Clonebug]

I'm using the TD04L-13T from a 2002-2007 Subaru WRX/Forester..
It is good for 270 plus hp.
It should be a perfect turbo for your 2L T-4. They spool real early on a WRX and those are 2L engines also.
I love mine.

[Udo Airbus]

Hi All, ok perfect, many thanks for the reactions.
Yes Robin, en Wim? Ik ken jullie via de Keversite.

I will search for a Td04/05 turbo.
Will you recommended that I will use the internal wastegate? Or made it external?

I have Rutgerbuggy his old turbo exhaust + wastegate (that you welded Robin )

Thank you.

[Udo Airbus]

hmm I'm looking how to find out what fuel injectors I need, and I found this site: https://www.rceng.com/technical.aspx#Fu ... Worksheet_
I need around 360-400cc max 200 hp?

Any suggestions? thanks.

[behappy]

What c.r are you planning. And how much deckheight.

Gr wim

[Udo Airbus]

8,5-1 I think.. Deck height unknown yet. Maybe it's better to assembly the short block first to do some measurements.

Update: Yesterday I bought a TD04L-13T on eBay ... hope it's here soon.

[behappy]

Any update yet !!

[Udo Airbus]

Hi Willem..

Small updates..

- trigger wheel is almost ready.
- I assembled the crankshaft
- busy with the engine case.. it need some welding to close the part under the Porsche fan, because I want 0% oil leaks
- my Dad refurbished the 1700 heads..
- Td04 turbo came in, and flanges.. and I ordered a rebuild kit for it

[Udo Airbus]

Update:

I Ordered 2 sets of Lifter bushings... 1 for me and 1 for my Brother in law.

I've seen a lot of broken t4 lifters, so I would prefer to use T1 lifters..

[behappy]

Hello Udo.

Good idea on the type 1 bushings in a type 4 engine. Are the lifters also from webcam. It,s better to do so.

I like the exhaust maby i am gonna make a same one

keep up the great work.

[Udo Airbus]

Thanks!

Yes I will order T1 webcam lifters..


For now I'm rebuilding the turbo..

[Udo Airbus]

So, the engine case is ready for the lifter bushings..

Also my new Webcam T1 lifters came in.

Just brought the engine case to the welder who will do some custom work for me on the case. (under the Porsche fan part)

Need to wait for: rod bearings and stronger valve springs, and then the build fun can begin

[Udo Airbus]

Small updates:

Engine cases welded.. I'm for sure that it will never leak oil under the Porsche fan
Insert lifter bushings..
Grinded some oil draines on the crank rods.. all new bearings..

Case closed