Inliners International Forums General Discussion Blown and Injected snowman4839 turbo build

I'm really not crazy though. Slowly rolling into the throttle (so that the accelerator pump isn't really necessary), I stare at my gauge as I'm accelerating (and getting closer and closer to full throttle). It stays at about 13.0-13.5 up until I hit 10" of vacuum. Then I get about an 11.3 anywhere under 10" of vacuum until it gets into boost which slowly rises back up to low 13s. I know I still need to drill it out a little more to get it into the 12s or high 11s under boost.
When into boost @ W.O.T. your A/F ratio should be in the high 10's like 10.8 to 11.0 as a safe A/F ratio
EDIT: I cruise at about 18-20" of vacuum and if I let off the gas going fast, it bottoms out the gauge at 30"+ of vacuum.

Any suggestions on the intercooler? Are air-to-water intercoolers worth the extra money and effort to setup?
For your budget & to keep it simple, stick w/an air to air intercooler.
I had been reading a few of the other threads on here and I liked the intercoolers that had outlets on the same side. 2.5" or 3"?
If you are ever going to up the boost levels & run a bigger turbo etc, go w/a 3" tubing. An intercooler w/3" in & out. If not intending to do any upgrades, 2.5" is fine.
I was just thinking something like this and just having a muffler shop bend me a bunch of pipe 2.5" to connect it up.
Not a good idea, muffler shops use benders that crush the tubing & will restrict airflow. If you can, stay away from 90 degree bends,each 90 degree bend will cause a drop in pressure. The ebay intercooler tubing kits are very reasonable. all mandrel bent tubing,get the ones with the bead rolled ends, example: http://www.ebay.com/itm/2-5-INTERCOOLER-...=item5adfd9f727 http://www.ebay.com/itm/Intercooler-27x1...#ht_6343wt_1392
That intercooler is a bad design.The air has to make a 180 degree turn.
You would need something more like this
http://www.ebay.com/itm/23x11x3-Turbo-In...=item5ae1a32c79
*Note*: I am not recommending for you to buy this one, it's just for you to look @ the design.
Another one: http://www.ebay.com/itm/CXRacing-Interco...=item562d6f381b
Get as big of an intercooler as you can possibly fit (even if it requires some sheet metal trimming),,,your engine will greatly appreciate the lower intake manifold air temperature (less chance of detonation)
If I had an intercooler like this, would I be able to put it back up to 15psi if I got the carb down into the low 12s or high 11s under boost?
It's hard to say until you try it.,,, Like I stated & Harry turbo6 has stated,,, your A/F ratio needs to be richer.
I say start off w/10.8, Harry says 11.0 for W.O.T (wide open throttle)

Also since the intercooler would create a denser air charge, would it actually give me more power at 15psi, [/b]
Yes, I have told you many, many times, you will ask your self, why did I not put this in the first place,really, it makes a big difference in power. & also than it did without the intercooler as well as giving me better detonation prevention?