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~79 T/A ATI ProCharger Track Info & Install Pics~
Update 4/05/04:
Got it all installed Friday on Karen's 79 T/A and made the Dude Scoop mount
Saturday. It fits all under the hood with about a 1/2" to spare under the flat
part of the hood with a Performer intake and Holley carb.
In the pics you will see that I even left the scoop mounted to the intake (now a
true shaker) and can still pull the hat and carb bowls to make adjustments. Cool
!!!
Trying to make this a daily driver with no noisy fuel pump plus try and pick up
at least 1.2 seconds with a P1SC unit. The car looks stock from the outside.
Under the hood will be void of boxes and exotic fuel cell system. A real street
sleeper.
Everything works great, no fuel surging, no mis-alignment & plenty of component
clearance. Fits the same in the car as it did on the stand. Even have a flex fan
installed without the use of an electric fan. Runs 160 degrees down the road.
At first I referenced the mechanical Holley Fuel pump to reduce noise, but it
wouldn’t keep up after the 1/8th mile. But ran awesome for that first 1/8th mile
or so on the street. We ended up switching to a different fuel system.
Still got a lot more to do, but she's been driving it all week to work. And
drove it for over 4 weeks everyday till we left for a weekend of Pontiac racing.
Just the 3 lbs of boost at 3000 rpm is killer. Karen says so far it seems to be
getting better gas mileage then when it was Naturally Aspirated!!!!
Also have the ‘Dude Scoop’ mounted in a way that I don't have to take it off to
remove the carb hat or fuel bowls. Plus, I put the Scoop on wing nuts if I have
to take it off.
Another added benefit is that with the gauges (Auto Meter 2 5/8") mounted in the
larger scoop opening, hot air can escape out each side.
Another Update 5/16/04:
Finally got more testing at 'Pontiacs in the Park' weekend in Virginia.
Tried to get a BR220HR to work, by trying to cheat the return system. Wouldn't
work. Ran a new #10 line from the bottom of the tank to the pump, then 1/2" from
the pump to the BG return regulator. Then tried to use the original 5/16" line
that ran from the canister back to the tank. My bad. To much resistance and
wouldn't come down off 18 lbs at idle. Overloaded the carb, surging, etc.
Made some 13.80 with 86 mph and worse passes. Just laid down with black smoke
and dying in the upper gears.
So, I tried different stuff for 2 days and finally just installed a spare Holley
blue pump with the Moroso 19lb spring. Borrowed a Holley regulator from Bob Cobb
of Renegade Racing. Drilled the Holley regulator in the top and installed a tube
to reference the pressure. "Worked Great!!!!!!"
First pass the regulator was set at 9 lbs going to 18 lbs on boost to be safe.
12.80 ET, Good, Black smoke on the leave, but didn't lay down. Pulled to 109
mph. Made 6/7lbs of boost at 5000 rpm. Great!!!! Heading in the right direction.
Karen's was smiling and loving the mph.
Then I lowered the initial fuel pressure to 7 lbs going to 15 lbs and raise the
shift point to 5200 from the 'engine only' passes at 4800, which it liked.
Trying to keep this fairly mild combination in the power band.
Next pass 12.33@111. OK, Now we're cooking. Still fat but workable.
Boost was reading 7 lbs.
End of the day rolled around so I couldn't do any more. Spent Friday and
Saturday just trying to get a fuel issues worked out.
Sunday's here and really didn't want to make any changes as it was "Bracket
time" and Karen was hitting some killer .009 and .016 lights. They gave us two
time runs on Sunday morning so we decide to just leave it alone.
First pass of the day............. 12.36 at 11.93
Second pass........................ 12.36 at 11.97
WOW consistent. If she hit her lights and ran those #'s all day. The money was
hers.
So, we dialed a 12.36 and let Karen do her thing. It was getting ready to rain
and cooled a bit. It was actually hotter there then back home here in Florida.
Rain delay for about 20 minutes then go. I should a dialed it down as I saw
others breaking out, but not knowing how the Supercharger was going to re-act. I
decided to just let Karen do her thing.
The other dude red lighted and she ran it out the back door to see what it would
to for next pass. 12.30 FLAT@ 111.95 and still a muggy day. But the temps were
dropping. Talked to Jack Gaydosh and he said the air was about 1800/2000 ft
above sea level.
Anyway, it's there. Her car would have run in the 13.30 range there on motor. A
full second increase with now the basic set up in place.
Ok So here's the package. I KNOW there is 11.90's in her combo which would make
it act like a 250 nitrous shot on Spray.
As it ran then with 7 lbs of boost and needing more tuning.... it's like running
like a 175 shot of Nitrous!!!! But with No bottle pressure to worry about. No
re-fills, no solenoid issues, etc.
Anyway here ya go.
Karen's 79 T/A info:
The car has the original T-350 tranny and "Stock" converter. Another tenth or
two is possible with a 2200/2400 holeshot converter.
This is also the BASE ATI ProCharger P1SC unit making only 7 lbs of boost at
"5200" rpms with Karen’s combo.
More rpm, more boost. But, the cam won't go that far. LOL. It's a 212/225@.050
with .450 lift. A 068 Pontiac cam copy. Idles at 600 in gear with 8.5-1
compression on 87 octane driven every day.
So I feel the pulley set up is worked out to make over 10 lbs at 5800 or so in a
modified engine. We retained the K & N air filter over the passenger side
headers. Install a cold air system would be worth .2 seconds or possibly more.
Had 1 3/4 degrees of timing pulled out for every lb of boost with 89 octane. To
be safe. More playing with 92 for track testing or racing, I feel no timing
would need to be pulled (And pick up more ET) or.......... go back to 87 octane
and run the same #'s?
This car has no trick suspension work. No frame connectors, trick springs or
shocks, etc. Stock all the way thru. Just a set of Slapper bars to try to
control any wheel hop. Weighs 3700lbs with fuel and the additional Supercharger.
Next weekend.
We decide to go to Bradenton on Sunday for their once a month all day Test &
Tune. Have to see what if will do in Florida weather. LOL.
Took the Air Cleaner off and installed a 180 degree bend to pull cooler air from
the front of the car. Extended the blow off tube so it didn't push warm air at
the filter and blow it out the side T/A fender vent.
Well......... as Karen left the line black smoke just rolled like I never saw
before and she said it just laid over and shuttered, so she lifted and brought
it back to the trailer.
I lifted the hood and the bottom pulley was wobbling so bad I thought it was
going to come off. If it wasn't that the fan and blower belt were in line it
would have unloaded.
So we loaded up and came home.
Just pulled the balancer. Half the neck is gone.
Somewhere in the bottom of the pan is have the balancer neck. Looks like the
balancer split right up the keyway.
Installed a new SFI type balancer and back running. Not going to worry about
where that piece is.
I now highly recommend using an SFI balancer!!!!
With Pontiacs using a slide fit balancer. More strain is developed on the
balancer when loading the ATI ProCharger belt.
Anyway, Pulled the unit and going to install a D1SC unit on my 76 T/A.
The issues are worked out. I have the brackets ready to go. Karen's Belt looks
awesome with no side wear or rib cuts after a month of driving and racing.
Making pulleys as I post and will be selling and shipping out pre-sold units
right after this Memorial Weekend. Thanks for being patient for the people that
sent deposits and hope they realize that, as with everything I do. I cut "NO"
corners and don't want any future issues.
Update 6/12/04:
Have more info as I have installed a D1SC on my 76
T/A.
Ok, here it goes. Had a 500 cu.in. Plus combo in my T/A with a hyd. roller and
86 cc E-heads. Tried to run the D1SC at the local track and slipped the 8 rib
belts trying to make over 10 lbs of boost with 10.5-1 compression. It also
lifted the heads. Decided to try my 428 I was going to use in the Funny Car as
it was more like what is needed to run a blower and make the power I wanted.
Here’s that combo:
“Dude Select” 400 block with 3 center billet caps.
“Dude” bearing kit to use a large journal crank in a small journal block.
428 factory cast crank, mains cut to fit a 400 block.
Filled to the bottom of the front water pump passage.
Stock length BME aluminum rods.
455 BRC Pistons (4.185 bore) Teflon coated skirts with heat barrier top coating.
Put the piston .045 down in the bore.
O-rings heads and block with Butler gaskets.
270 plus duration Nitrous/blower cam on a 114 L.S and .700 plus lift.
#197 455 H.O. with 107cc chambers. Ported to 260/270 cfm.
T & D shaft assembly with 1.65 rockers.
Holley Street Dominator ported intake for hood clearance.
“Dude” Modified 850 Holley for blow thru application.
All the other stuff that goes into building a reliable combo, scraper, windage
tray, SD brace, deburred, ARP studs, restrictors, etc.
D1SC unit with Extreme Velocity carb hat.
8mm Cog belt, 8 rib belt set up.
Here’s the rest of the car:
76 T/A; weight 3575lbs.
3.90 gear w/Ford 9”.
New ET Street Tires. 29.5 X 10.5 X 15.
Power glide with a 9.5 converter out of the 500 cu.in. plus Pontiac combo. (it
would stall 4500 and flash 5500 in the big motor)
Landrum springs with Cal Tracs and Hal 12 way shocks.
Stock front suspension with Moroso springs and 3 way shocks.
Custom 2 1/8” to 2 1/4” headers into 4” collectors and 4” tailpipes that stop
right before the rear end housing.
NHRA certified (cage, safety equipment, etc) for 7.50 and slower.
All this was set up for my Nitrous 8.93 pass for the BFG Radial tire class
racing.
Update 07/08/04:
Now for test results:
Showed up for the Norwalk Thursday Track rental with an 8mm cog setup and set
the tension at what ATI recommended. Using a Gates HTD power belt. Tried leaving
off the Trans brake as I felt I needed more rpm to launch and hold boost with
the glide. Wouldn’t go over 3400 rpm, wouldn't come up on the converter. Tried
shifting at 6400 first pass. Stripped all the cogs off the belt first pass.
Smooth as a babies butt. Ran a 13 something. Found out that they told me I was
setting it too loose.
As it was a special order and only one belt to be found before I left I was down
to using the 8 rib pulley set up I brought as a Demo unit. I really thought I
would be good for the weekend with one belt. I wanted another back up belt but
couldn’t get it in time before I left.
Changed all the pulleys and idler pulleys. 4 in all. Half the day gone. Then
tried the 8 rib. Wouldn’t leave on the brake as it would only go 3400 rpm and
bog on launch. 2.0 to 1.68 60 ft’ers. 2 runs in the mid 12’s with 128 mph. LOL.
Disappointed, but not giving up. I know the glide isn’t the ideal tranny for
this but is what I use for the radial tire class with nitrous and the converter
was out of my Big motor. But still felt if I could leave it would work. You
could feel the power there.
Would have cost me $2,000 plus to do up a 400 tranny and converter with
everything. Plus had only 3 weeks to get all this done before Norwalk.
Time to relocate for Friday and the Open track then. Replaced the belt as it was
starting to show signs of wear. One more pass and decided this wasn’t working.
Then decided to try and leave at and idle and see what the converter would flash
to. Bingo. 1.44 60 ft’er and 8 lbs of boost dropping to 4 near the end.
10.83@134. Now I’m feeling better, but the belt was slipping at the shift point.
Really cranked down on the tension and next pass. You could have launched the
space shuttle off the belt. LOL.
10.68@135. 1.44 60 ft’er again. 11 lbs of boost down to 6 in high gear. What was
happening and showing on my VDO recall tach was that the rpms fell to 5200 when
shifting at 6400/6600. Made a few more passes and tried a different shift little
at a time and replacing belts every third pass. Had top go into Norwalk and
order (5) 8 ribs belts at the local parts house. LOL.
Had 2 more times in the mid 10’s.
So now it’s time to do or die. Decide to up the rpms to 7200 and hope the shift
would be in the high 5000 range to hold boost. It helps.
Left at an idle the converter flashes to 5000 and had a 1.42 60 ft’er, ran a
9.92@136.92
Ran another 10.07 and a 10.10 on Saturday. Now I happy, other then replacing
belts. Boost was in the 14/15 lb range dropping to 6. Danee’ located another 8mm
cog belt and had it over-nighted to get there Late Saturday. Installed it and
made one time run on Sunday. Was warmer out and everyone was slower by .2 or so.
Ran a 10.01@137. But the boost went to 16 lbs and dropped to 6 and the rpms fell
to 5600, and then dropped to 4900 as the boost fell and the carb went fat/rich
big time, blubbered bad and then slowly picked up. With the belt not slipping,
the boost fell with the rpm drop and re-acted totally different then the 8 rib.
But you could feel the power difference over the 8 rib set up.
First round of eliminations it was on a Mission from GOD, LOL. 1.42 60 ft’er and
16 lbs of boost, then when I shifted the power just went away. Got back to the
pits and the cog was totally smooth. Another HTD belt wasted. Later talking to
Brad Spidel (he working with an F-2 ATI unit) that he went thru 3 of the HTD
belts before he found out that they won’t hold up. He recommended that I go to
the GT-2 Fiberglass/Rubber Gates belt. Oh well, live and learn, just expensive.
All in all a productive weekend and learned a lot. Carb and fuel pressure were
not an issues. Plugs read great. Fuel pressure was 7.5 lbs at idle and over 20
lbs under high boost.
The pulley set up I’m running needs 6800 to max out the ATI unit at 64,000 rpm,
but ran it at 7000 without issues. I feel that with a T-400 and the right
converter and 8.5 or 9-1 compression (it should make 20lbs plus then) that this
D1SC unit would have run mid to low 9’s.
UPDATE: Later found out that I needed a larger 'blow off valve' to handle/vent
all that air when I lifted off the throttle with 15 lbs of boost. That was
destroying the belts as it was backing air up in the head unit and trying to
keep the Charger from spinning.
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