All Things Mk5 > Performance Modifications
Audi TTs / TT-rs injectors
Teutonic_Tamer:
--- Quote from: KRL on October 19, 2010, 12:02:00 pm ---
--- Quote from: Teutonic_Tamer on October 19, 2010, 11:44:26 am ---S3 pistons are also uprated over Ed30 / Cupra. Made of a different (stronger) alloy - to cope with increased combustion chamber temps and pressures.
--- End quote ---
I think the S3 runs a different compression ratio to the ED30 as well iirc.
--- End quote ---
Yup, slightly higher. Which also adds to increased combustion chamber temps.
But I also recall that the S3 runs about a quarter bar (or was it 2psi) lower boost than other K04s such as the Eddy & Cupra - to offset the increased compression ratio.
Teutonic_Tamer:
--- Quote from: BDMAlex on October 19, 2010, 02:25:52 pm ---They also run a larger wrist pin than the K03 engined cars.
--- End quote ---
Is this a yankie forum? :booty: Stick to the Queens English - its a gudgeon pin! :P
--- Quote from: BDMAlex on October 19, 2010, 02:25:52 pm ---RS4 injectors run around 15% more than the S3/ED30/Cupra injectors. The main reason the RS4 injectors were used in the first place was due to the S3 ones not being available in the US as they dont have the S3. They had to wait for the TTS to come out over there. The only issue with the RS4 injectors is the spray pattern isnt perfect, but they still run ok and start up is ok too.
--- End quote ---
Oi - whadya mean the RS4 injector spray pattern isn't perfect? Don't you go dissin my ride, dude! :evilgrin:
Seriously, whats wrong with them? Is it that the RS4 injector pattern doesn't suit the combustion chamber design of the 2.0 TFSI? :popcornsoda:
KRL:
--- Quote from: Teutonic_Tamer on October 19, 2010, 10:48:02 pm ---Seriously, whats wrong with them? Is it that the RS4 injector pattern doesn't suit the combustion chamber design of the 2.0 TFSI? :popcornsoda:
--- End quote ---
The RS4 injectors spray at an angle:
Some people suggest this can lead to starting and part throttle issues.
vRSAlex:
--- Quote from: Teutonic_Tamer on October 19, 2010, 10:48:02 pm ---
--- Quote from: BDMAlex on October 19, 2010, 02:25:52 pm ---They also run a larger wrist pin than the K03 engined cars.
--- End quote ---
Is this a yankie forum? :booty: Stick to the Queens English - its a gudgeon pin! :P
--- End quote ---
Wrist is easier so spell :fighting2: :booty:
--- Quote from: Teutonic_Tamer on October 19, 2010, 10:48:02 pm ---
--- Quote from: BDMAlex on October 19, 2010, 02:25:52 pm ---RS4 injectors run around 15% more than the S3/ED30/Cupra injectors. The main reason the RS4 injectors were used in the first place was due to the S3 ones not being available in the US as they dont have the S3. They had to wait for the TTS to come out over there. The only issue with the RS4 injectors is the spray pattern isnt perfect, but they still run ok and start up is ok too.
--- End quote ---
Oi - whadya mean the RS4 injector spray pattern isn't perfect? Don't you go dissin my ride, dude! :evilgrin:
Seriously, whats wrong with them? Is it that the RS4 injector pattern doesn't suit the combustion chamber design of the 2.0 TFSI? :popcornsoda:
--- End quote ---
I am sort of dissin your ride :love:
As KRL has pointed out with the perfect picture. They are not 100% suited to the 2.0 FSi combustion chamber design. Looks like there is less overall spray to help with the air to fuel mixing?
Teutonic_Tamer:
--- Quote from: KRL on October 20, 2010, 10:20:10 am ---
--- Quote from: Teutonic_Tamer on October 19, 2010, 10:48:02 pm ---Seriously, whats wrong with them? Is it that the RS4 injector pattern doesn't suit the combustion chamber design of the 2.0 TFSI? :popcornsoda:
--- End quote ---
The RS4 injectors spray at an angle:
Some people suggest this can lead to starting and part throttle issues.
--- End quote ---
Thanks - very interesting. Just goes to show the subtle differences in design requirements of differing inlet tracts and combustion chambers.
Anyone know the spray pattern of the TTRS injectors?
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