So when i got my compression test my last cylinder took about a half second longer to register the same PSI as the other 3, and the mechanic said it was probably because of a worn ring. So i was thinking, and one of my friends who i just talked to for the first time in a year or so, works at car shop, and would be more than glad to help me work on my internals. If i picked up some Vitara pistons, it'd lower my compression to be safer for boost (8.5:1 right?), and i'd also get all new rings to fix cylinder #4. So what i am asking is if i lower the comprssion and run the same level of boost, would i be making less power since the compression isn't as high? I'm eventaully gonna be Eagle rods and probably new headstuds the same time i do the new pistons/rings, but overall if i ran the same level of boost would the new pistons be a good thing?

 

Im no expert but i think that it wold be sligtly less. The thing is that if you up the boost a tad i think you can make up for it without to much issue.

 

lol, You take long enough to install a turbo kit. Rebuilding an engine would take you like 2 years.

Anyway, yea you would have to turn the boost up a little more to make the same ammount of power but if you are reenforcing the internals why not make more than you were planing on with a stock motor? With lower compression you are gonna lose some power when the turbo isn't spooled also.

 

yeah, you'll lose power with lower compression pistons, but you'll be able to up the boost more than you would with stock pistons.

 

Mobsta being out of a steady job and being in college is not easy for a boost project, but finally getting like $150 a week (would work more but i have 18 credit hours, so i'm happy, even if its not THAT much, i dont care [8D]), so it should come togetehr quick now.....but anyway what i thought was right about losing a bit of power, but i'm just leaving it internally gated for now, might get a manual boost controller and up it a little bit, but i havent heard good things about my turbo over 10-12 psi [&:]oh well, thanks guys

 

You can make less power and you can make more power, all depends on who and how it's tuned.

Honestly you will not see much of a difference.

 

Sov you have Vitara's dont you? So i wont see much a difference.....will there be THAT much bigger of a difference in reliability?

and also i was just speaking techincally, since lower compression = lower n/a power, i'd be starting off with a lower hp right off the bat, so boosting would still give me gains, but not as much as the original, higher compression (but i'd be adding reliability)

 

Arguably lower compression will mean more power for a boosted car due to all of it's advantages. I haven't had any issues at all with my engine, if you build it correctly there should be absolutely NO problems, it should run just like any other engine.

However, beware. Vitara blocks have 0 low end torque lol.

 

Well what the hell is the point of a redline if you dont use it? lol

 

Hahaha! Hey, I use it all the time, but I when you're just driving around in traffic or whatever you need to downshift a lot.