10 vT EM?

[JShadzi at aol.com]

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<<No response??>>

Easy, I don't work well under pressure  =)


> >> <<I know Your solution, didn´t we discuss Your too small K-26
>> turbo last year, when You were thinking to get bigger IC?>>
>

Yes, I guess we did

> >> <<We have done lots of 10v headers and mods, I posted pics
>> of some last Year too, remember? Here is one that dynoed
>> +450 Hp, of course all those were with EFI:
>> :
>> <A HREF="http://groups.yahoo.com/group/audifinns/files/boosts/01-10.jpg">http://groups.yahoo.com/group/audifinns/files/boosts/01-10.jpg</A>
>>  >>
>

Yes, I remember, nice piece, but I've only seen about 2 or 3 designs, that's
not a whole bunch in my book

> >> <<And my one ( ok it´s now a 20v project ) . With a Holset H1
>> with 59mm turbine and 50 compressor A/R  0,65. I am looking
>> for some 350-380. But that is different story. Anyway -the pic:
>>
>> <A HREF="http://groups.yahoo.com/group/audifinns/files/TEMP/H1ps.JPG">http://groups.yahoo.com/group/audifinns/files/TEMP/H1ps.JPG</A>>>
>>
>> Nice
>>
>> <<Both headers are made by same header specialist here.
>> Main difference to Your header seems to be; our runners are
>> longer and a flange ID sized collector. Your collector seems to
>> be done by putting all runners together. May I ask, what are
>> Your T-4 turbine and compressor diameters? A/R ? Just trying
>> to figure Your final target :) Ok that is another story, too...>>
>

Yes, I wasn't too concerned about having totally equal length runners, all of
them fall within about 25% of each other, which is 100% better than the stock
manifold.  All the runners come in and merge into each other, I wanted to
keep the volume of the collector low, I didn't want to dump each runner into
a larger chamber than necessary.  I'm running a T03 .63 AR hot side Stage 3
with a T04E cold side with 57 trim wheel.

> >> <<About 10v: CIS limit You mentioned is known. Is it just 250 for
>> a 200Hp 10v 1B engine, or 180 Hp KG  (only in Europe), I do
>> not know, maybe a little more.
>>
>> Propably I did not make in the last post myself clear:
>> We are not looking to those KG-cars more than +250 Hp.
>> But as we all know, it needs 1.1 Bar at 5500 and it is not
>> very smooth with oe EM and K-24, or 26. There will be lots
>> of backpressure.>>
>

Well, that seems clear, but I don't know if its really worth all the trouble
for a little smoothness (if that is a problem as you say), I don't really
have any doubt that the stock manifold if more than suited to 250hp, I think
300 is where the stock manifold starts causing real performance losses.

> >> <<In my former 10vT I had that 1,1-1,2 Bar, it spooled fast to
>> max, but started to decrease when closing the top. Reason
>> is sure that EM and restrictive K-24 turbine ( only 46 mm ).
>> Now we plan to get that 250 with less boost and smoother,
>> just by making exhaust flow.>>
>

Well, no doubt there, the K24 is definitely going to hurt top end power, but
the CIS is going to limit top end power also just by restricting air flow,
for good top end performance at the 250hp level, the stock CIS must be
removed, the cam upgraded, and a bigger exh. side housing used, even bigger
than the K26 IMO/E.

> >> <<Idea is to use a modified K-26. It´s 55 mm turbine is ok, but
>> that small 42 mm compressor will be chanced to a 48 one.
>> IMO any EM  will be better than OE. Also WG will be placed
>> in the collector, not like OE has. That´s all. >>
>

Ya, I just don't agree that the stock manifold is the real problem at those
power levels

> >> <<I have seen some tuning EM:s for 10vT CIS. Homemade, but
>> didn´t Dialynx have a cast one? >>
>

The Dialynx manifold is hardly a solution...

<<Here is a pic I found in the net,
> >>
>> look at the location of the fuel system, ok -that will not be our way:
>>
>> <A HREF="http://hem.passagen.se/anordman/trimm100turbo/peter/engine.jpg">http://hem.passagen.se/anordman/trimm100turbo/peter/engine.jpg</A>>>
>

Wow, very interesting, for that amount of work, CIS could have been replaced
with EFI twice  =)

Javad
80tq.com