Max boost on stock internals
12-28-2018, 06:00 AM
#43
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just read trough this discussion about the limits of the stock engine. i find it very interesting that from my experience the pure torque level is not equivalent to the stress the engine experiences.
I am currently running my 99' B6 NB (yes with had the 1.6 in the NB in europe) with a TD04L-13T at 15psi@4500 tapering up to 17-18psi@redline. with 13psi all the way it pushed 300nm and 220hp on the dyno (talking fly power).
this setup is going strong for about 22tmiles now.
friend of mine bent his rods on his 1.6 rotrex supercharged after bout 15tmiles. on the same dyno as mine it did 243nm and 255hp (on the fly). much less torque but more top end power. he ran on excellent fuel with great intake temps massive amounts of timing, tuned on the dyno, no knock detected and as the dyno told, it made good power and felt aggresive.
What i want to say is, that from the torque standpoint, there was no concern at all, that this setup would harm the engine. In my opinion you can't limit the stock engines capability by Torque nor Boost levels. Just exceeding the peak cylinder pressure, the engine (the rods to be honest) can take, will wear it down over time. i ended up tuning my timing to a point where the engine still sounds very flat and soft, not aggresive and hard working, even if i could ran more without knock, i don't think thats the way to make it reliable on the long run.
Daniel
I am currently running my 99' B6 NB (yes with had the 1.6 in the NB in europe) with a TD04L-13T at 15psi@4500 tapering up to 17-18psi@redline. with 13psi all the way it pushed 300nm and 220hp on the dyno (talking fly power).
this setup is going strong for about 22tmiles now.
friend of mine bent his rods on his 1.6 rotrex supercharged after bout 15tmiles. on the same dyno as mine it did 243nm and 255hp (on the fly). much less torque but more top end power. he ran on excellent fuel with great intake temps massive amounts of timing, tuned on the dyno, no knock detected and as the dyno told, it made good power and felt aggresive.
What i want to say is, that from the torque standpoint, there was no concern at all, that this setup would harm the engine. In my opinion you can't limit the stock engines capability by Torque nor Boost levels. Just exceeding the peak cylinder pressure, the engine (the rods to be honest) can take, will wear it down over time. i ended up tuning my timing to a point where the engine still sounds very flat and soft, not aggresive and hard working, even if i could ran more without knock, i don't think thats the way to make it reliable on the long run.
Daniel
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