stock internal psi limit???

[racing all the time]

I was wondering what the psi limit on a stock j-spec b6t interanals would be. what kind of boost could I run with a upgraded turbo, boost control, intake, exhaust, big intercooler etc...etc... what kind o hp could I reasonably get out of the b6t without any internal mods but mabee forged pistons and better rings. I have also considered a better set of cams shafts and valve seals.Then what kind of boost could I run. All the help I can get would rock. Thanks alot

[maldo]

400whp....do some research on the subject. I had mine up to 18psi. The headgasket is good till 18psi, although I destroyed my pistons at 12psi due to a lean condition. With the proper tuning anything is possible. There are many B6 motors pushing 220-240whp, you just need to research how.

[marshmallow15]

technically, doesn't the amount of cfm flowing matter which will be the total horsepower and tq. your motor makes that limits your psi... example my car can handle 5 psi... shouldn't it be like my car can handle x amount of hp which is x psi instead?

[Ryencool]

psi is the amout of pressure and engine can take before the componenets cant take the stress. Horsepower and pressure are diffrent, correct?

[boostedmx]

actually psi is not a good reference for hp at all. all that number is telling you is how hard the turbo has to work to get the air crammed in there. for example a ported setup would only need 10 psi of boost to get lets say 250hp. that same engine unported would have to boost to 14 to get the same results. thats why porting is a huge factor in hp goals when turbocharging. turbo trims and sizes are a huge factor also. a t3 turbo wont dish out nearly as much air at 10psi than a 60-1 would. so that is a factor too. <p>all this came really hard to me at first and i didnt understand much of it. when it comes time to buy or build a turbo system the people you are purchasing it from will guide you in your selection. there are many sources on the web for information and on this site.<p>but a more specific answer to your question would be, around 400hp. that is with alot of tuning and a standalone. rods are your weak part of the engine so instead of investing in pistons get some rods or have them treated.<p>[ June 03, 2003: Message edited by: boostedmx ]</p>

[marshmallow15]

exactly.. its better to go by amount of horsepower rather than psi of boost. horsepower is more accurate and what you're looking for, not how much psi your motor can take.

[racing all the time]

So the best idea is rods and porting? How much could I port a b6t for, and does anyone know where they do it? Thanks

[jaydog5678]

I would check around Denver for a head porter. There has to be someone in your area that will do it for around $700 - $900. It's not cheap, but it's very benificial on a turbocharged engine vs. an N/A engine. The rods on these B6T engines are superior to the later 1.8 BP-T rods. They're much thicker in the rod beam section. If I were you, I would replace the piston's with forged units, and coat'em (skirts, rings and the top). Nitride treat the rods, or shotpeen them for added strength. You should have a near bullit proof bottom end with these mods.

[jaydog5678]

<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by jaydog5678:
I would check around Denver for a head porter. There has to be someone in your area that will do it for around $700 - $900. It's not cheap, but it's very beneficial on a turbocharged engine vs. an N/A engine. The rods on these B6T engines are superior to the later 1.8 BP-T rods. They're much thicker in the rod beam section. If I were you, I would replace the piston's with forged units, and coat'em (skirts, rings and the top). Nitride treat the rods, or shotpeen them for added strength. You should have a near bullit proof bottom end with these mods.<hr></blockquote>