K26/27 #10 hotside

[elijahallens2]

Audiman, you are talking 500WHP right? I don't see any problem even with RS2 injectors getting 500CHP. Where does your current turbo come up to full boost now? I am a KKK turbo fan as well since both Garretts I had blew out after less than a year. I'm only running a k26#6 hot side but have the turbin clipped at 15 degrees to give it the top end of a #8 housing and full boost by 3200rpm but now with the tube header I will go to the #8 housing with same turbin and use the K29 compressor wheel with K27 machined cold side housing. This turbo has made over 600CHP on other cars but I'm only going for 500chp to keep it safe and to learn to drive the car better before spinning the tires off coming out of a turn in third gear .

Elijah

[karlblues2]

Off Topic ( sorry ) 500bhp eh Tom. That sounds nice. So supposing I need to get mine from a theoretical 350bhp, to say 420bhp, what do I have to change, and in what order? Is there a thread to point to what you have in yours now?

Would love to see what times you could post down the 1/4 mile too
Cheers
Karl
Oz

[Doug_RS2]

Tom got 3.6secs 0-60 and 11.9secs 1/4 mile with his car just now.

When you go to approx 420bhp you are getting very close to the point you will need new rods(depending on turbos you will need to be careful on the torque) - it is a big step going past that so if you are, you want to decide before if 420bhp is enough or you really want 500bhp as it will be cheaper to go to that in the first step.

The other thing is tuning it becomes more important - so you will not maximise what you have unless you get some hands on custom work.

[Mihnea]

Elijah, 500 cHP on RS2 injectors is fantasy, it can't be done, not even running them at 8 Bar fuel pressure as Hap did!!!! The RS2 injectors flow 360cc/min per injector at 3 Bar and 415cc/min at 4 Bar, which by regular and widely-accepted calculations is good for 415-420-ish crank HP and that's it.


Additionally, K26#8 is good for max 450-460 cHP on a good EM (420 to 450 cHP on an RS2 EM tops), any more than that and you'll ruin your engine because of too high back pressure caused by that #8 hot side, if we're talking about the KKK one, the turbonetics K26#8 hot side knockoff is something radically different!!!


HTH,


Mihnea


PS: YGM

Audiman, you are talking 500WHP right? I don't see any problem even with RS2 injectors getting 500CHP. Where does your current turbo come up to full boost now? I am a KKK turbo fan as well since both Garretts I had blew out after less than a year. I'm only running a k26#6 hot side but have the turbin clipped at 15 degrees to give it the top end of a #8 housing and full boost by 3200rpm but now with the tube header I will go to the #8 housing with same turbin and use the K29 compressor wheel with K27 machined cold side housing. This turbo has made over 600CHP on other cars but I'm only going for 500chp to keep it safe and to learn to drive the car better before spinning the tires off coming out of a turn in third gear .

Elijah

[Greg_S]

so how does the turbonetics one compare to the KKK original?

[Jeffer]

Hopefully next week I'm having my car on the dyno. (if the turbo doesn't go nuts)
Then we know what power we can make with a k27#7 hotside. I will also make an updated spec list from my car. Dual HG worked out well on my car.
Looks like it did pass the 500 hp mark.

Cheers

[Doug_RS2]

Did the HG go then?

[karlblues2]

Tom got 3.6secs 0-60 and 11.9secs 1/4 mile with his car just now.

When you go to approx 420bhp you are getting very close to the point you will need new rods(depending on turbos you will need to be careful on the torque) - it is a big step going past that so if you are, you want to decide before if 420bhp is enough or you really want 500bhp as it will be cheaper to go to that in the first step.

The other thing is tuning it becomes more important - so you will not maximise what you have unless you get some hands on custom work.

Thanks Doug, as ever, I appreciate your responses mate Love to know a list of things to buy though, so I can prioritise between feeding the kids and my addiction
Cheers
Karl

[Billman]

The RS2 ex manifold is too small for over 450 BHP? Gow does the Turbonetics K26/8 compare to the KKK one?

[Doug_RS2]

RS2 won't do much more than 450bhp.

For big power you need to do the bottom end which means, new rods, custom pistons (or machined stock pistons for lower CR), probably a rebore, new shells all round, alloy flywheel with stong clutch and get all that balanced.

You should get some headwork done to clean it all up and get a bit better flow.

You will need a bigger IC which means a front intake manifold would make the plumbing easier.

A tubular EM and obviously a custom DP to go with that. A big turbo.

Then you have custom oil and water lines to the turbo. Custom silicon boost hoses to plumb everything in.

Move the MAF to pressure side (eaier to fit in) Mafs are still holding up on several cars with 500bhp ish power.

I would also put an RS2 water pump in (I haven't but should have) as it should pump the water round quicker and heat management is starting to get critical at these power levels.

Oil Catch Tank will be required.

Big injectors.

That is all I can think of just now.

HTH

[AudiS2Au]

Karl - add getting someone to Oz to map it!

[Doug_RS2]

Get a big group of 1.8T and TDIs together for a group session and a mapper might travel to you.

Karl - add getting someone to Oz to map it!

[AudiS2Au]

Been trying - need to carefully convince some people of the virtues of custom mapping when there are a myriad of local distributors of generic Wett, APR, GIAC, Revo, etc etc chipsets. TDIs have never been so popular down here for some reason. But there is certainly a good deal of 1.8T owners.

Call me lazy, but I just don't have the energy to start another chapter of 'my chip is better than your chip wars' .. people take stuff too personal .. Anyway might talk to you guys about getting some fact to help ... Karl .. your thoughts?

But Tom - err sorry, I'll give you back your big mutha turbo thread now... sorry!

Get a big group of 1.8T and TDIs together for a group session and a mapper might travel to you.

[elijahallens2]

Mihnea,
I don't get it about the RS2 injectors. I know the flow rates are low compared to some of the water spickets people are using but there are several urs4/6 people that have dynoed there cars and have seen 380+WHP using RS2 injectors and RS2 EM's. Doesn't 380WHP equal close to 500chp?
As for the K26 #8 hot side, if the fins are clipped at 15 degrees I have seen several porsche guys putting down 550-600whp using a K27/29 cold side with this setup. I really need to get my egt meter hooked up so I can see whats going on. I must be close to blowing the engine running a #6 hot side to 7000rpm at 25psi but man does it feel good .

Elijah

Elijah, 500 cHP on RS2 injectors is fantasy, it can't be done, not even running them at 8 Bar fuel pressure as Hap did!!!! The RS2 injectors flow 360cc/min per injector at 3 Bar and 415cc/min at 4 Bar, which by regular and widely-accepted calculations is good for 415-420-ish crank HP and that's it.


Additionally, K26#8 is good for max 450-460 cHP on a good EM (420 to 450 cHP on an RS2 EM tops), any more than that and you'll ruin your engine because of too high back pressure caused by that #8 hot side, if we're talking about the KKK one, the turbonetics K26#8 hot side knockoff is something radically different!!!


HTH,


Mihnea


PS: YGM

[Doug_RS2]

Mihnea,
I don't get it about the RS2 injectors. I know the flow rates are low compared to some of the water spickets people are using but there are several urs4/6 people that have dynoed there cars and have seen 380+WHP using RS2 injectors and RS2 EM's. Doesn't 380WHP equal close to 500chp?

US dynos have some strange correction factors for altitude and temperatures (we don't get much altitude or temperature here ). If you switch those factors off then you get more accurate figures. The correction factors are fine if you have a basic ecu that controls timing, boost and fuel but not much else. Our cars ECUs are already correcting for these factors.

What turbos were these cars running? What power levels do full RS2 specced cars do - that is probably a good indication of correction factors.