Originally posted by Ludin203
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h22 turbo???
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Originally posted by djkiley View Postnot exactly. you can boost with high compression but your just very limited in how much you can run(no more than 8-10 pounds) and tuning is much more critical since there is far less room for error, which is why most people dont do it. theres people boosting new si's which are 11:1 but theyre running low boost with a good tune. with high compression you can achieve around the same power goals from running low boost compared to low compression with more boost. more boost doesnt always equal more power. but again, most people dont boost with high compression. it can be done but it requires a very good tune and your limited so the choice is yours
i will recall saying to not do it but take djkiley's statement as a warning of what you might be getting yourself into if you go this route depending on your power goals and budget.
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Ring lands fail first on a boosted h22. 7-8 lbs is safe all day (why greddy set their kit to that). You can run around 10-12 but will eventually have catastrophic failure of the piston and will tear up the frm sleeves. If you want 400 hp you'll need more than 13 psi. I'd sleeve the block along with the new pistons.
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Boosting the h22 with even 8psi of boost the motor will OVER-HEAT, Due to the fact of the cylinder walls are very thin, When the cylinder walls are so thin it heats up the coolant in the block so fast it will over heat and crack a sleeve.. Even if you go piston and rods setup you still can run over 10psi of boost!!
Sleeve that motor!!! Or go b-series, those stock sleeves are thicker..
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Anyone that is sitting here telling you to run 8-10psi are talking straight out of there ass. Do t go by boost pressure, it means very little with knowing the size of turbo you will run
10psi on a t3 super60 is like 220hp
10psi on a 6765 is like 350hp
Pick a power level, pick a turbo that will meet that power and ask your tuner for the rest. most all of the info in here is bullshit
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