in general,
what would it take to run 15-18 psi

What pistons should i go with, and if i just get the rods shot peened will they hold up?

what bore and compression would be best for my goal?
and how much porting will need to be done to the head?

also, what other head work should i look at, any recomendations for valves, springs, or cams?

Thanks for the help.

97-RS

Your going to get the best reuslts to your questions but using the SEARCH function.

its your first post ill go easy on ya. This is the best place on the net to get 2gnt info its been here for years. So im gonna go out on a limb and say this question has been answered about 1000 times please use the search feature you will find what you are looking for.

http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=80274&mode=full

this should get you started 60+ posts of turbo setups

First off, welcome to the sight

Secondly, there are so many different answers/options, to respond to your questions with, that you aren't just going to get one answer that everyone agrees with and says is exactly what you should do. Like Mike said, the search button is your friend, do a few searches on these things, spend hours (yes hours even days) reading up on this stuff and then you will know what your choices are and be able to make decisions based on what you are trying to accomplish. You'll be able to decide if you want to do headwork or get new rods instead of using the stockers based upon looking at all the positives and negatives of everything

Originally posted by cs82685
First off, welcome to the sight Secondly, there are so many different answers/options, to respond to your questions with, that you aren't just going to get one answer that everyone agrees with and says is exactly what you should do. Like Mike said, the search button is your friend, do a few searches on these things, spend hours (yes hours even days) reading up on this stuff and then you will know what your choices are and be able to make decisions based on what you are trying to accomplish. You'll be able to decide if you want to do head work or get new rods instead of using the stockers based upon looking at all the positives and negatives of everything

it took me about a year of reading information posted up on here before having the confidence to under go a rebuild

to answer your questions directly

Originally posted by MadRS
in general, what would it take to run 15-18 psi

It is recommended that you get forged internals before boosting past 7 or 8 psi.
There are cases of motors surviving around 10 psi consistantly but almost exclusivley using a somewhat sifisticated fuel setup (which I would recommend for anything running 12 psi or more)
Search for:
bottom end rebuild
8 inj setup, port fueler and/or MSnS/ megasquirt

Originally posted by MadRS
What pistons should i go with

I'm not the one to ask about piston brands, haven't bought aftermarket (yet)

Originally posted by MadRS
and if i just get the rods shot peened will they hold up?

I dont know what that is, I read this site alot, so I bet not. (you better do a searh on it)

Originally posted by MadRS
what bore and compression would be best for my goal?

Look this up I cant remember

Originally posted by MadRS
how much porting will need to be done to the head?

You dont have to port out the head to physically turbo your motor, but it is one of those things that will be worth more the more you turn up boost. I would recommend it. You could always go the half way and do like me. I had the exhaust ports machined larger, and I polished the texture out of the intake ports.

Originally posted by MadRS
also, what other head work should i look at, any recomendations for valves, springs, or cams? Thanks for the help. 97-RS

all recomended none required. you should research the benefits of these, also add to that adjustable cam gears


of course these are only recomendations based on my research and experiences.

Originally posted by hs_elrod
There are cases of motors surviving around 10 psi consistantly but almost exclusivley using a somewhat sifisticated fuel setup (which I would recommend for anything running 12 psi or more) Search for: bottom end rebuild 8 inj setup, port fueler and/or MSnS/ megasquirt

You also forgot to mention the SFMU with larger injectors as I find that setup the most straightforward and easiest to setup (IMO) out of all of those choices.

Originally posted by MadRS What pistons should i go with

Your two most common choices are Wiseco or JE Pistons. I personally plan to go with 8.8:1 ratio JE Pistons when I ever get to rebuilding.*

Originally posted by MadRS and if i just get the rods shot peened will they hold up?

I also don't know for sure about this one (as I never wondered), but most people usually replace the rods with forged pieces while they are in there anyways for piece of mind.*

Originally posted by MadRS what bore and compression would be best for my goal?

I usually see people using 8.8:1 or 8.6:1 compression pistons for a turbo rebuild with a .020 overbore.*


*I admit I'm not too keen on engine rebuilding yet as I haven't researched it myself, this is just info I can remember from reading other people's threads. If my info is wrong, please someone clarify.

Originally posted by totaleclipse_05
You also forgot to mention the SFMU with larger injectors as I find that setup the most straightforward and easiest to setup (IMO) out of all of those choices.

Fair enough, though I personally had an easier time grasping the concept of adjusting pulse width over fuel pressure. Seems like adjusting fuel pressure to get it tuned was going to be a headache. Guess that's why I'm still NA.:P

So you see MadRS there are many options and for each his own. Good luck with your project.:thumbsup

Hey,
thanks alot guys, i appreciate the help.
i've already found alot of helpfull information on this site, and i look forward to researching more.
thanks again.

97-RS