kp

iTrader: (34)

347 CID, 9:1 CR, 222/228 115 XER cam, minor head porting, stock valves, LT headers, x-pipe, flowmaster mufflers. D1SC, FMIC, 7" crank (stock C5 balancer), 4.10 blower pulley (6 rib). 42lb lucas injectors started running out at 5200rpm but still made an easy 532rwhp on a mustang dyno (~600 dynojet). Shut it off when it hit 13.5:1 a/f at 6350rpm so it has a lot more with some bigger injectors. Thats with a 4.10 gear and 18" run flat tires on a C5.

The shop is 1000' elevation and it was hitting 12.5psi at 6300rpm according to the sensor on the dyno (see pic) and the gauge in the car. I'll finish it up when he picks up some bigger injectors, just was playing around today, cant wait to see what it does pulled all the way up. Only numbers on this printout are torque and boost, printed it so you guys could see the boost its making with this pulley combo with a FMIC.

Black Blown 02

Nice! What size intercooler? Do you have any numbers with the smaller twin intercoolers?

I just ordered a Griffen unit like PSJ's and I'm wondering what gains are possible with a better flowing intercooler.

NA$TY-TA

iTrader: (21)

I knew it............... These damn stock intercoolers can do the job..... hes only spinning that blower to 44,100 rpm's at 6300 and making that much boost on a 9:1 motor...... A FMIC is my next mod and i bet ill probably have to go up to a bigger blower pulley once i get it on there.
KP, How long is th epiping on his kit? Is it hard piping or rubber piping? What RPM does he plan on shifting at later down the road??? When are you going to redyno him with bigger inj. ??????
Kyle

kp

iTrader: (34)

Not sure of the exact core size, its not nearly as big as PSJ's though. I have done a couple regular D1 C5 ATI kits and this appears to be around 3-4psi more with the 4.1 pulley but every motor cam/exhaust will show a little different. This setup has a very nice straight inlet, big filter, ATI race bypass and very few bends in the pipes. Also very few hose connections, what is there is silicone hose and it comes with t-clamps so there isnt a lot of places to leak.

kp

iTrader: (34)

Its mostly hard pipe, 4 connections total on the outlet side. Some of boost increase is the intercooler and some is the piping, having almost a straight shot into the blower helps also.

As soon as he gets the new injectors I'll finish it, it will go around 6800rpm on shifts so it should see another 1-1.5psi of boost up there. Also had the old turbo tune in the car with only 16 degrees of timing so it has more, just wanted to get the car safe to drive around for now and see where it was at. 532 on a mustang is nothing to sneeze at

frcefed98

iTrader: (16)

Thanks for posting this up kp. I am looking at a few FMIC's and priced out tubing and connectors for this project. I mapped out the path to the FMIC and from the FMIC to the throttle body and the paths are pretty straight. Time to start putting things together.
J

kp

iTrader: (34)

No problem, figured you guys would be interested in the numbers. The dynojet I usually use wasnt available today and the mustang had the boost sensor so it was interesting to log the boost..

QuickSilver2002

I have a very similar setup and have been making 10 psi with a 4.25 pulley. 4.0 pulley is going on as soon as I get some body work finished up. I remember gaining about 2 psi going from the stock intercoolers to the front mount. I think the gain would be much larger if the boost was already above 10psi.

I had 42s in it before and those were almost maxed out with a 4.65 pulley at 8psi. I'm now running the mototron 60s with a rail mounted regulator.

Pro Stock John

iTrader: (34)

Where IAT's during the pulls?

C5 kits seem to have better luck, how long are the belts.

kp

iTrader: (34)

Its a long belt, over 80" if I remember, the same belt drives everything except the a/c. The C5 crank pulley is only like an inch behind the rack so no room for an add-on pulley.

IATs on the last pull were 93-116. Didnt have real good fans and it was pretty hot in the shop, above 90 for sure.

These injectors pretty much just die at ~5200, the blue line on the graph is the a/f. Going to try some 60s most likely. Car has the racetronix C5 fuel system but may need more, find that out when the bigger injectors go in and can pull it all the way to 7000.

NA$TY-TA

iTrader: (21)

What all do you have? Details.....?? On what??? We need more info like this to help all of us along so we can help each other with our kits...... FMIC for me...... hopefully by the end of this month...
Kyle

NA$TY-TA

iTrader: (21)

Kp can you take some pics of the kit and Intercooler for us?? Can you get the demensions of the Intercooler? Thanks
Kyle

kp

iTrader: (34)

Its an A&A corvette C5 D1 kit, easy to find using an internet search. Here is a pic of the intercooler.

Its not a big cooler.

BIGBOS

That cooler doesn't look big at all

GrezMunky

That thing doesn't look much bigger than two stock ATI's put together.

kp

iTrader: (34)

Yes its small, never said it was big

I dont think the ATI coolers are really that bad, I think the hoses and piping and especially the intake sucks. Wonder if nate ever did any before/after boost tests with the hardpiping he made. If you could move the radiator forward and get rid of that silly plastic intake hat I bet it would pick up. I think its just a combination of things and not just the intercoolers themselves that are hurting boost numbers on the f-bodies.

BIGBOS

I know my little twins were scolding hot

kp

iTrader: (34)

They get hot, its their job there is no way to keep them cool on the dyno unless you have a very large pair of fans. Mine have got to 130 on the dyno with the little boost I have. I just spray them down with a little icewater or nitrous, if not they get hotter and hotter every pull unless you wait a long time between them..

Ed Blown Vert

iTrader: (2)

I can't tell, but is your HP under the curve real low?

kp

iTrader: (34)

No

I dont have the HP graph here, I just printed that one off quick for the boost but I assure you its just fine.. These graphs are hard to look at, everything at the top is the max and it scales down from there, The HP line should be well above the yellow torque line - its just goofy scaling.