Well I guess it’s about time I posted an update on the GTA.
I’m sure some of you had an idea what’s been up my sleeve, so here’s the deal. ..

I bought a new ATI ProCharger last summer from a local private party, for a steal.
After quite a bit of work by Bennie this spring, it’s pretty much done.
Still have some details to finish, but it has been drivable the past couple months.

I’ll give some details to reduce the Q’s and for those who don’t know much about this stuff.

It’s the P1SC kit (self-contained) with the big 3-core intercooler and smog legal, of course.
In addition to the new 24lb SVO injectors last fall, it has a new fuel pump (high pressure Walbro Racetronix kit).
I’m also utilizing the booster pump and FMU the ProCharger kit comes with.
Boost is about 7-8psi, but creeps past that it seems when air is more dense or forced into the intercooler (freeway).

So, as far as initial track times, I took it for 3 quick runs today (7/18).
Not very impressive E.T. wise thus far, but the MPH’s did reach about what I was hoping for.

13.3@107.8 – 2.0 60’s. Picked up ~7mph from last season, so mid-12’s should be possible I suppose.
I’m just not sure where to get those 7-8 tenths yet, but I’ll definitely be back there to practice when the weather chills more.

I didn’t launch at very high rpm’s and shifted at only 5K, so that’s a place to start.
Any suggestions are always welcome. It’s pretty dialed in tuning wise and feels very strong.
My car has never been a super freak though, so we’ll see where it goes from here.

Many thanks to Bennie for his time and ingenuity on this project!

. ..and here’s a few quick teaser pics for your viewing pleasure.

- Del

 

Best in the West.

 

about time you let the cat out of the bag

Now you need to really that thing

 

I wouldn't go that far, but thanks.
Many are going much faster with a lot less.
I'll be satisfied if I can pull some mid-12s eventually.

Yeah, I was a bit timid first time out with the setup.
I'll go all out next time.

My AS&M runners are still not here, but should be shortly.
Haven't installed the new Powermaster high-amp alternator yet.
A better cam than the mild ZZ4 probably wouldn't hurt in the future either.

 

haha sweet del! I knew something was up your sleeve when you were talking about upgrading your fuel pump and such. Looks like your trapping about the same as me, I bet now we could have an awesome race. Next time you go to the track, lets have a matchup!

very clean looking btw, i'm envious!

 

Once again Del, YOU SUCK! I've been toying around with buying a bigger cc head and getting an sc too. I don't know yet, I still want my T56 so I may stay n/a with the 10.1 for now. We should have some good races this time next year. Bastard!

 

Haha, thanks guys.
I'm sure I'll see you folks shortly.

I've been eyeing that Comp 268XFI cam that you have in your sig for a long time Steve.
It'd be a nice improvement over my current and streetable with some tuning from what I've read on here.
Maybe next year.

 

very nice del. i thought u were gonna sell the supercharger. well anyways i'll be racing at sac raceway on the 25 after i drop off my driveshaft at terrell house. anyone wana come. OH could anyone spare me a helmet. i have one buts its out of date.

 

I'm gunna need a soundclip.
Hajeet, I'm puting RS4 engine mounts and a dts in the Audi so if I install them intime I'll go.

 

I sold a different unit a long time ago.

I don't think a clip would do it much justice.
If you didn't know what it was, you'd think it was a really bad belt slipping whistle, haha.

 

slicks

 

word.
Yeah, just for fun sometime I should borrow a set just to "see" that nice E.T.
I need to figure out how to get 1.8 60's on what I have first though.

 

...what do you have?

 

DR's and a decent suspension setup.

 

what size drag radials?

 

How much was the seat of the pants difference?

 

275/40/17 - I'm going to need a new set soon.

I wasn't wetting myself with the increase, but I haven't been too heavy with the gas either yet.
I would say it definitely pulls throughout the entire powerband more noticeably now.

If you bolt one of these onto a practically stock car, you'd probably be wow'd more.
Since I had heads/cam and lots of bolt ons, early calcs are showing probably a 30%+ increase in power, as opposed to a stock application that might see closer to 50%+ depending on boost amounts.

 

get some 15" wheels already

 

what are the specs on that cam Del? I heard cams with + overlap are more prone to bleed off boost than a negative overlap cam so just curious the specs. I forget the specs on the ZZ4 cam you have. Anyways, turn up that boost man haha.

 

wtf is possitive and negative overlap?

and god this is sad but i remember

208/221 @ 50 and like .474/.510 (don't remember if that's with a 1.5 or 1.6 rocker tho) on a 112

 

Yeah, Jesse has the specs right for the ZZ4, except I have 1.6 rockers. So the lift is like, .506/.544.

I think there isn't just one XFI, but I recall looking at specs of 218/224, .570/.565 113 LSA.

Once I get used to and do what I can with this amount of boost, I will get a smaller pulley and go for 10psi, but not anytime soon.

 

Intake duration + Exauast duration /4 - LSA *2 = overlap

if its negative number it will have less lope and is generally better for boosted apps, and the the pos. overlap cam will be better in general for n/a combos. the s/c cars and turbo cars are usually matched with higher lsa cams. anyways, that looks like a good upgrade either way from the zz4.

 

how bout calling it a wide or tight LSA like a normal person

 

well when i was reading about that stuff they called it that not wider or tighter lsa which seems like its just referring to the lsa not the overlap. i don't know. no need to be ****.

 

No big Robby. Jesse just has a complex about speaking normally/politely online.

 

He wasn't the one getting bleeped out...

Car looks sweet as always Del, glad to see some progress on it.

 

What've you been up to Vin? You disappeared from the MS.

I've never heard of positive/negative, wide/tight, or short/fat if it makes y'all feel better.

 

I know it's not the same thing , for the most part, the tighter the LSA the more overlap...for the most part, obviously we're talking about cams with the same amount of duration. However there are still things to consider. Ramp rates, ...duration (cuz chances are they won't be the same). with your equation you can have a cam with a 106 lsa angle and still get that "Negative" number...point me to a cam manufacturer that'll grind you a cam on a 106lsa for a boosted app.

So like i was saying, just say n/a motors in general like tigher lsa, (have you looked at grinds for fuel injected motors?) And wider for forced induction. Keeps it simple

 

Got a new / old truck and did a few new things to the IROC, you'll see it again very soon and I think everyone will be surprised.

Far as MS goes, I can live without it /shrug

 

Yeah I figured it was something like that.

Paint & bodywork?? Lookin' fwd to seein' the surprise.


Thanks for the clarification above Jesse.

 

ya i thought you might say that i guess i should of said negative overlap while on a wider lsa. my bad.

Del can you post a few more pics up of the new setup? It looks like it takes up a lot of room in there.

 

Well my engine compartment was pretty full before since all the accessories including smog & A/C are still there.

The washer fluid container is gone and replaced by a smaller one they provide.

Here's a few more pics.
I threw in one of the Supra since I had it painted recently, added a front lip, some clear front lights.

 

supra needs some MKIV wheels

 

sweet you let the cat out of the bag....


i say time for a new shortblock this one is obviously not peforming i cant wait to see you hit the 12's you should have called me to come out to the track i had the day off.


and off subject that was you rollin on 80 the other day i honked but you werent payin attention and than i thought it wasnt you cause the supra was too shiny lol

 

You called it. I been shopping for a set of MKIV or 90-92 (same 5 spoke style) for the past 6 mos.
I don't want to invest too much into it.

I didn't bother calling anyone because I knew it wouldn't be a wow-o performance.
It was more of a feel out trip. I'll get some 12's out of her.
You think the shortblock is just a dud? A shame with such low miles.

Yeah it was probably me, I was in a training class all week off Truxel.
Didn't see ya bud, but I'm sure I'll see most of you folks soon 'nuf if we ever get a gtg going.

 

whats ur cr?

 

not to be an insult or nothin but ya i think its a dud for some reason even you said it your self your car has never been a freak kind of a dud its always disapointing your car should have so much more horsepower than it does with that combintion on there as it sits should be 12's.

 

I think it's like 9.7:?

I'm just curious if there is something specific in the shortblock you think should be refreshed that would help.

Really not sure how fast it "should be" in comparison to other GTAs.
I read a lot of stats and have seen many a user's ride on here with varying outputs.

I've seen tons of just head/cam/bolt-on combos running mid-low 13's, and then some well into the 12's and better with a lot more extreme, non-smog legal parts.

I had a bit over 250 at the wheels before the blower, which is about right with the TPI on top still.
That should've been good for about a 13.2-13.5, which I was close to.

With the blower I'm only estimating a 30% increase to give ~325 at the wheels.
This is close to the ~108mph I trapped in the initial runs.
That should be good for a 12.5.-12.7.

From what I've read on the Power Adder board over the past year or so, there are quite a few mid-high 12's with similar setups, so I don't think I'm far off.
Don't get me wrong though, I have been a bit disappointed over the years at the track, but I don't know if it's the weight, the driver, or just how it is for the GTA.

Any suggestions are always welcome, but I think I'll have a better idea next time I visit the track to see if I can still pull another half second out of it.

 

I think del needs to push the gas pedal to the floor

 

I'll pretend my alternator is about to go out next time I'm at the tree.

We'll see how it goes next time out.
I think the +7mph was a good sign and about what I expected.
Just need to translate it to a better E.T.

 

Funny thing happened to me on the way home with the Supra today.

An older guy in a C5 Corvette pulls up and asks "how much?"
I kinda laugh and ask, "what're you offering?"

We pull into a parking lot and he says 4K cash, right now.
His passenger is checking it out meanwhile commenting to the guy how clean it is inside, the low miles, etc.

I tell him I'm not ready to part with it just yet and not for 4K, but for 5K I'd think about it.

He knows guys that would want it for drifting apparently down at Irwindale in SoCal.
I tell him about the few mods, minor oil leak, etc.
He doesn't give a shiet and tells me that they're just going to rip that all out and drop another drivetrain with 600hp+ anyways and that I can see it drifting in D1.
He insisted I take his # and think about it then call him even if I decide nah.

I call him back later and tell him I just can't sell for 4, but will keep the #.
He said no problem, didn't appear to want to go higher as he's owned tons of cars, including these when new and knows a fair price, so he said keep his # and if I'm tired of it within the next couple months to call him.

High blue (excellent cond.) is just under 4K, "Suggested retail" is like 5K.
4K woulda been OK, but I'm in no hurry to sell just yet.
Good to know there's still demand though!

 

he wanted to buy your gta or supra ?

 

The supra

Del selling the GTA for 5k

 

The Supra.

 

If only the GTA was for sale for 5K.

 

What's his number??
i'll sell him mine

 

thats odd because Supras aren't really the prefered car for drifting due to price and weight

 

Well not the new ones obviously for price reasons.
Many an MKIII can be found for under 5K.

As far as weight, it's heavy now, 3500lbs, but I assume they get stripped down pretty good.
I imagine the car has good weight distribution, just not as great as a 240 per say.
He just mentioned the drive train would be pulled and putting in a roll cage.

 

Don't worry, I'm not switching teams.
It was just too nice a deal to pass up and I needed a newer daily driver.
2001, 79K miles, 100% stock.

Supra is for sale if anybody knows anyone looking for one!
The guy who wanted to buy it started talking me down from his original offer of 4K, so I said nah.

 

so how much did you buy it for???

tell us more