300HP+

[RacerX11]

If you are running a blow-through turbo system (TB is between turbo and intake manifold), you don't necessarily need a bigger one. The boost pressure across the same diameter TB will flow much more than a NA engine, which only has atmospheric pressure to push the air in.

Marty

[nocutt]

I agree with Marty To put it into better perspective...hundreds of turbo buicks are in the 11's with stock TBs which is about 58mm...to run that much power we are talking about over 550RWhp...
When you are pushing boost into the TB, it isn't necessary to go big...as a matter of fact if you went big, you will loose pressure across the TB...which will cost you...throttle and turbo response will be affected independently, so while you might think you gained something, you actually will be loosing the other...the rule of thumb: If the turbo's inlet 1" in dia. then the tb would be better off @ 1" in dia. (consistency in dia. to be exact) especially for mild boost...

[Guest]

I'll add to this...

In my truck, I did a test when I went to the track, due to the somethings I noticed on the street.

I originally had a 56mm '99 3400 TB when I first installed the Franken60, this worked, but throttle was touchy due to a "large" opening and with a single blade TB it opens "quickly" as in given to different sized TBs the larger one will flow more at the same throttle angle as compared to the smaller one. I also noticed on a drive on the highway, that when I was passing a truck, I barley opened the throttle, maybe about 1/2" pedal movement (I don't know off hand what change in throttle position this produced, but it's not much), anyway, I was traveling at about 110 Kph when I started to pass, I looked down at the speedo as I was passing the front of the truck, I was at 140 Kph. This took place in about 4 to 5 car lengths (approx). So I did some seat of the pants testing on my home, seemed that I accelerated quicker (less distance and time) at part throttle than full throttle, I know not an accurate way to test, but still, I did notice a difference.

Now fast forward a couple weeks to track day....

I started off the day with the 56mm TB, I ran low 14s, then swapped to my already prepped 52mm TB (I have a stock S-series linkage on my TB), I dropped to a 13.8, 2 tenths from a smaller TB, I also had a harder time hooking, which seemed to me that I was making more bottom end torque, as I didn't have nearly the same problems with the 56mm.

I also think that velocity plays a role in this, not just flow.

[nocutt]

The_Raven wrote...I also think that velocity plays a role in this, not just flow

I concur ...Turbo response vs throttle response aren't one in the same, they are somewhat interchangeable...still different enough!!

[ikessky]

Well, it's always good when I can save $200+! I'll just stick with the stock one for now. Maybe I'll give it a little work out with the die grinder though..........

[Carlo1prix]

Any help on bolt on's for a 01 3100 to help performance

[BerettaMX]

lol 300hp is easily acheivable. Take for instance my buddy John at APOC 260 to the wheels and he doesnt have much. Yes he is running a sc but if someone actually "builds" a 3400 for na it could put out alot. One of the main downfalls is our heads, thats a big key issue. Also I noticed you guys are very worried about oem spec ecms and electronics. They arent that big of a deal, I would first off get all the power then dyno tune with the electronics.

[GPXSS]

Hey BerettaMX... how much power do you put down without the juice?

[Anonymous]

144.5whp 162.1tq according to one of his vids.

[demonte1997]

I wouldn't be worried much about getting to the 250hp mark. That wouldn't be difficult with turbo on a 3100 or 3400 engine. You just need to make sure the 4T60 tranny or whatever ya got can handle all the extra power.

[BerettaMX]

Yea I havent built my motor yet so its weak. I'm building my 3400 for a whipell sc and should be done by spring, plan is go deep 11s.

[ikessky]

Looks like the Skylark will be sticking around for a while more. That basically means I'll need to do an NA build before anything. Not much room for a turbo in my engine bay. I'll pull the NA built engine when I switch vehicles and turbo it once it goes in the Century.

[zyvx]

I have a 97 Malibu with a 3100 and i was wondering what are some of the smaller mods that i can do to get HP gains. I already have a CAI and i plan to get at least a muffler (hopefully full exhaust) in the spring.

[ikessky]

Depends on what you consider a "small" mod. Ported upper and lower intakes along with a 62mm throttle body, headers along with your exhaust, ported and polished heads, reprogrammed computer........ Like I said, it all depends on what you consider to be small and how much you want to spend.

[GRANDFURY]

RSM sells a kit for the 3100 it says it will be 260-270 hp I think. It says it is for the grand am but you could make it fit and work I think the whole kit is like 8000$ Canadian. Sorry I dont have link to their site.