stop and think about what your saying for a moment here....theres a 780HP talon running 9:1 compression without a problem(engine wise anyway) now 9:1 isnt especially high I just gave that as an example, theres a 650hp honda running 11:1 dont go around saying it cant be done...read maximum boost by corky bell, it can and has been done, I am currently building a twin turbo v6 right now with 10.5:1 compression, as long as your internals can handle the power level and you have good tuning, your good to go...but you must have COMPLETE control over your fuel and spark, besides people boost stock 5.0s all the time and the compression is what? like 9.5:1 on those?

 

tats crazy, what happens when you sell the car or something?

 

Look, of course it can be done. But go follow the life of those cars you are talking about. "One time I saw this car and it had 12:1 compression and 15 psi boost." Well that's great. How long does it last. I think you can do anything, but being practical and logical, you would not do that. All engines are different, all engines tune different. On vince's conversation with that stang guy, I would have to agree with vince. Just to prove a point you can do something and then once you achieve, it makes 2 passes and blows up is arrogant and foolish. Just my .02. But I'm just a newb.

 

I heard of alcohol guys that run real high compression with alot of boost and get away with it,only with alcohol though

 

Yeah, apparently 11:1 compression is considered low when using alcohol.

 

on the other hand, look at all the high compression turbo motors that have lasted, again, its all in the tuning, if you have control of fuel and timing and keep the boost mild always using the correct grade of gas you wont have a problem, its only when you get stupid thinking your stock computer and some crappy RRFPR setup can handle 10psi is when you get blown motors....again, there are honda guys with 100k+ miles since turbocharging on their 10.5:1 motors, and really 11:1 is not much of a step up....I again refer you back to the book Maximum Boost by Corky Bell, he is after all, an expert, now that being said, I probably wouldnt want to turbocharge an 11:1 engine just because of all the hassle I would have to go through for a small amount of boost, to me installing and tuning a standalone is not worth 10psi....to others it might be

 

OK, so he said you could run LOW boost when the timing was retarded and the tank is full of race gas. I don't think that's actually TOO out of line. Now if he was suggesting that you do this everyday, well yeah he's smoking something. That recipe sounds like a track/dyno tune.

I'll agree with whoever said that making a turbo setup to work on that combo is a waste of time.

 

why is it a waste of time? low boost(under 10lbs) is fine for a high compression engine on street gas, just because most people dont want to buy a standalone computer to control fuel doesnt mean it isnt possible or reliable, you people are getting too caught up in the "because the OEM said so" mode(and we all know how OEMs make the BEST POSSIBLE parts for cars right?Thats why everyone upgrades, no high compression turbo motors arent reccomended by the OEMs, but neither are huge cams), again, the reason the OEMs go with low compression for turbo engines is because they cant possibly afford a custom computer for each car, or the time it would take to tune each car...therefore its easier to throw in a computer that will work at lower compression levels rather than risk what could be disastrous consequences at high RPM using a computer that was tuned for one particular car, by the way, theres really not much difference in the static compression of say 8.5:1@25psi and 11:1@11psi, I dont know about other standalones, but the one I'm using for my neon allows me full control of spark(timing) and fuel...so therefore if I need to retard or advance timing....not a problem, this is all I'm saying, with a standalone it is quite possible and reliable, I currently have 8.6:1 compression in my neon because I originally didnt plan on a standalone, but the 10.5:1 compression motor I am building will have a standalone...therefore I went higher, I personally wouldnt go any higher than 10.5:1 but it can and has been done, done well and reliably with the help of a standalone

 

on turboford site,it has been proven that more boost lower compression yields more horsepower-with a fully tuneable system

I have seen a couple threads on this on that site

 

yes, this is true...but I was just talking about possibility...the main reason I want a high compression boosted engine is for part throttle driveability, and just to prove it can be done