RS2 Competition Turbo

[Jon441cc]

[Jamo]

#6 hotside...same as the RS2 Jon. Just done a bit more reading, and I'm a bit confused - i think the "7200 comp" has the housing and wheel changed, and then some ppl have engineered their own by machining the rs2 housing to fit the 2772 wheel - perhaps you know a bit more Jamo?

At the end of the day, the hotside is the limitation - i've heard the comp. has slightly higher efficiency at higher rpm, and therefore delivers full boost ~500rpm closer to the redline. Works for me but not really worth much extra cost - if you're gonna splash out, seems the 3071 is the way to go.

Theres 2 rs2 comps, one with the 2.7 comp wheel only and one with the 2.7 wheel and increase compressor housing side (rs2 housing +1)

[Jon441cc]

#6 hotside...same as the RS2 Jon. Just done a bit more reading, and I'm a bit confused - i think the "7200 comp" has the housing and wheel changed, and then some ppl have engineered their own by machining the rs2 housing to fit the 2772 wheel - perhaps you know a bit more Jamo?

At the end of the day, the hotside is the limitation - i've heard the comp. has slightly higher efficiency at higher rpm, and therefore delivers full boost ~500rpm closer to the redline. Works for me but not really worth much extra cost - if you're gonna splash out, seems the 3071 is the way to go.

Ross, are you saying your getting a 3071 ? :mischeif:

[Jamo]

He wants over 400 BHP it makes more sense

[Jon441cc]

He wants over 400 BHP it makes more sense

It was only a matter of time with all the garrett porn ive been posting to him
In my opinion the Garret gt3071 offers really good value for money

[Jon441cc]

http://morten.myphotos.cc/probefahrt/gt2871

What about one of these Jamo ? super fast spoolin :mischeif:

[Ross]

Hide it!

I think the 3071 is great value for money, but at the moment I'm still comitted to going the more genuine RS2 route... atm I'm struggling to figure out how to go about prepping the engine... it's a case of how far do I go - bottom end rebuild splash out and have the head rebuilt, new seals etc while it's all apart, all cleaned up and almost like new - and somehow figure how I can live without her for a few weeks while she's off the road!! Decisions....

[Jon441cc]

Hide it!

I think the 3071 is great value for money, but at the moment I'm still comitted to going the more genuine RS2 route... atm I'm struggling to figure out how to go about prepping the engine... it's a case of how far do I go - bottom end rebuild splash out and have the head rebuilt, new seals etc while it's all apart, all cleaned up and almost like new - and somehow figure how I can live without her for a few weeks while she's off the road!! Decisions....

Ross
When i had my cylinder head freshened up they fitted new guides,stem seals,ex valves,refurbed the inlet valves,cut new seats, skimmed very little off for flatness.
You should of seen the old ex valves

[Chris M]

Thats some bling there Nice and clean

@Ross, get yourself to 3071, just think as anything over the 400bhp mark a bonus mate

[Jon441cc]

Ross are you getting the RS2 from BorgWarner?

[Jamo]

Ross
When i had my cylinder head freshened up they fitted new guides,stem seals,ex valves,refurbed the inlet valves,cut new seats, skimmed very little off for flatness.
You should of seen the old ex valves

Who did the work Jon441cc?

i'm asking alot about head work, BaltiboyS2 has given me a great contact, Corey can also do some work and Aelred is also looking like he's got a contact that can do head work.

Just getting a feel as the price vary quite alot from company too company.

[Jon441cc]

The RS2 is all K26 turbo. I've had a couple dozen of RS2 and RS2
Competition turbos apart in the past 6 years. The hot side is based on the
smallest of the K26 series housings, with a Porsche spec'd hot side wheel,
and the appropriate milling of the housing (which results in a slightly
larger downpipe opening). The center section is stock Audi K26 WC, and the
cold side is a K24 cold side housing with a K26 cold side wheel. The
RS2/Comp both use the larger K26 shaft for the wheels. The RS2 Competition
uses a larger cold side wheel and housing, the hot side stays per early RS2.
What throws most folks off, is that KKK left the K24 designation in their
part numbers on the cold side tag.

The actual answer to the years of the K24 cars in the US is up for some
discussion. The audi "claim" is that as of 1989.5 (late MC dual knock
MAC-14) Audi switched to the K24 turbo on all I5 turbo applications. This
switch also "supposedly" came with a revised cam profile, flat flywheel (+
different TOB fork), and 2pc exhaust manifold. IME, 1990 was the *******
year for previous year pieces parts. I've seen 1990's with single pc
exhaust, K26 turbos (but all have had the flat flywheel and the revised cam
profile).

As of 1991 + intro of the 20vt cars worldwide, all Audi 20vt (I5 only -
thought I'd miss that turbo cars except for the RS2, were K24 based
turbochargers.

Maximum boost to the K24 is altitude corrected at 16psi. At 3200ft the 1991>
stock 20vt cars lowered maximum boost threshold to prevent overspin of the
turbo. You guys with modded 20vt computers with K24 turbos should reread
that last sentence.

Scott Justusson
QSHIPQ Performance Tuning

[porkkis]

Here's two pics of Kalsket's filter installation at the audi club finland ice track day

First he drove over it. And the he smashed the bumper etc...

[Jon441cc]

Ross
When i had my cylinder head freshened up they fitted new guides,stem seals,ex valves,refurbed the inlet valves,cut new seats, skimmed very little off for flatness.
You should of seen the old ex valves

I was sorting out some stuff to bin and found these from the rebuild... These exhaust valves are from a standard 154,000 mile motor