MTDI building and tuning. New Holset p.7, plan runing 30 psi!

[vic003]

The intercooler I use is an eBay one, 410x155x65mm the standard size.
Unfortunately I can't measure intake temp, do you have a good Idea of temp sensor like this?
But the fmic I use is approx the same I used before and I always had good temps.
Of this is the turbo I'll get faster with a holset one. But in my head k24 could do lot better than 160hp.


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[deepgrooves74]

What about possibly thinking of running A water methanol mixture? Injecting that just before the intake manifold, and maybe just before the intercooler?

You could also get a gauge that has two readouts on it pre-and post intercooler temperatures. That would tell you whether or not you were efficiently cooling the charge...

Then also ultimately and EGT gauge. I assume you have to have one of those already?

You have to forgive me if this is a stupid idea I haven't done this myself, but I have read things that showed good promise.


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[vanbcguy]

Auber Instruments have some reasonably inexpensive temperature probes that can be used for intake air temperature. It's a difficult thing to measure if you aren't doing it "live".

Remember the K24 shipped on engines putting out 68 HP and went in to production over 30 years ago. You're asking it to produce 2.5x the airflow it was doing in its stock application. Sometimes a little less boost will actually provide a little more power if the turbo is just generating a ton of heat and restricting the exhaust.

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[vic003]

Hi guys, I'm back with relatively bad news!

So first, to answer you deepgrooves, the water-methanol injection seems good, but I would think about it only with a completely tuned engine, with a good reliability and nice power output. I didn't find the good tune already, so it's not a good idea to think about that now!

Let's talk about the K24, we won't have do talk about it anymore as he died tomorrow! On saturday, I drove back home, and the intake piping popped out on a hard acceleration, I think the turbo didn't love that instantly RPM increase...
Yesterday, on a hard acceleration too, I heard a big whistling noise with low power, thought about intake again but nothing, I think K24 has died!
Next week-end I'll check it, I've just buy a rebuild kit so I will make that tentatively cause I'm thinking about a Holset one!
I contacted Alcaid that advised me to go for a HE200WG, it's probably my next turbo, the only problem is that I didn't want to change mine so soon and it's a little expense I didn't plan!

Two weeks ago I bought a new car, so the golf is in stand by as I have a new toy! I took a Seat Leon Cupra, with the amazing engine of the new S3, the 2l TSI with 280hp. The only problem of this car is that contrary to the S3 and Golf 7R it's not a AWD, it's lighter and more reactive, ok but tires have troubles to transmit power to the ground!!
I'm thinking about next upgrade on it, bigger Alu FMIC, 200 cells cata and chiptuning, power will grow to 380hp and 500NM torque (approx 370ft/lb), this engine is a beast!

I just need to get money!

[vic003]

Regardind this, it was maybe the reason I had poor power output with black smoke, the turbo wasn't in good shape I think!

When I see the flow map of the k24 it's approx 20-23lbs/mn so it will do a 160-180 bhp, maybe mine wasn't capable to give more then 20lbs/min.

But now doesn't matter anymore as the new one will be 31lbs/min with a faster spool than K24!   

[vanbcguy]

Sounds like fun!

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[vic003]

That could be fun yeah!

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[vic003]

Hey, just some infos of my golf!
I just put my k24 off and here is what I found




He's dead, but i had spare one with turbine dead and rebuild kit so I made a new until I get my k24.

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[vanbcguy]

Ha. Yeah that isn't a happy turbo.

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[vic003]

Lol he has seen better days! But now it's brand new and will be great until holset is here!
New holset will be happy running at 30 psi!
The thing that's weird, I always had Garrett turbos before, and the the kkk had no shaft play compared to them, I still don't understand how it happened, but all compressor parts were worn, from wheel to backplate!
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[damac]

how much was the holset turbo?

what injectors are you using?

i got an alh motor i want to make mtdi and i have rover 300 pump i want to leave stock.  i want to start fresh with nice parts but just want bang for buck performance whatever that is, not looking to make a race car but i want to get good mileage.

[vic003]

Hi damac,

Holset turbos he200 series are 650 USD inc. shipping from Alcais.
For the nozzles I'm running, these are french one from DSS 0.260 but probably want to go bigger in future.
In this configuration, with a 300tdi pump you can hope have 200 crank hp with just a modified LDA fuel cone.
I highly recommand to go with a stage 2 or 3 clutch, mine is XTD, not the best but do the job for the price!

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[vic003]

Today is a great day! Holset is here!!



Very good quality abd shipping was very fast, Alcaid is top!
The only problem I have, he said me holset has T25 flange, so I bought a new t25 manifold, but my holset came with T3 flange...


So I refilled the drills on the manifold with inconel and I would try to re drill like a t3 flange.
Flanges are the same for T25 and T3 manifolds from TA, the only differences is drilling. Hope it would work.

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[vic003]

Hum, there isn't a plenty of room between firewall and turbo!

This week-end I'll get my vband and my t3 flange gasket, so I'll begin to build my new downpipe and properly fit turbo on manifold.
The next steps will be the adaptation of the intake piping and build a bracket to support the turbo on the engine, I don't like it only hang on the manifold...

Thinking of a brand new IC piping, but I don't now where to fit it, the mk2 underhood isn't big!

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[ORCoaster]

I would also be adding  heat shield between that unit and the firewall.  Otherwise things are going to get warm under the dash.   Might get by with thin reflective shield or add to that with 1/2 inch metal deflector.