so what does it take to go from 95.50 to 100MPH in the 1/8th?

[Quick6'n'-K.C.]

last night we took a local turbo regal buddies GN to the track and it went 7.85 at 95.50 on radials last night with a non spinning 2.0 sixty foot-
and went 11.94 at 120.82 at 23PSI pump gas and alky during that same pass

our goal was to hit 120 in the 1/4, it was done after 7 passes

mph was getting better and better every pass- 105,108,113, 114, 116, 117, 117, 120, 120
the heads and exhaust housing netted 5 MORE MPH at 7 psi less boost!!!!!!!!

now that goal has been accomplished, we want it to go 100 in the 1/8th, what can we do besides race gas and slicks?

here is the combo below, just wondering if more timing and more fuel will help for more 1/8th mile MPH the chip is on its way THANKS ERIC

it has a te45a with garret .82 housing, 3600 multidisc PI, MSD 50's, 3 inch downpipe,ford powerstroke intercooler, DIY alky kit with NOS dry fitting and .035 nozzle, ERIC MARSHALL CHIP, home ported heads, 204/214 cam, stock t-body, stock upper plenum, RJC power plate- 91 OCTANE

does anyone have any back to back horsepower gains/ track gains for a 70mm T-BODY with the PTE upper and power plate for the PTE UPPER?
we went to PRECISIONTE.COM and their upper is not listed on the site

like to hear some comments THANKS GUYS

LETS JUST SAY IT WAS A GOOD NIGHT AT THE TRACK
BW

 

[azgn]

100 in the 1/8 will translate to 125-7 in the 1/4

so my guess is you need about 50 more hp

turn up the boost to 28 lbs and you'll prolly have it (will require 116 fuel)

you won't see any significant (or insignificant for that matter) gains from a bigger TB....don't waste your $$ until you are running 130 or so in the 1/4

I tried a 65 mm Hemco one time and it actually slowed me down (I run a stock 62mm JJ special)

 

[Quick6'n'-K.C.]

woody-

did you gain anything going to the JJ larger t-body? this one has the stocker on it ... and the lower intake is port matched to the felpro gasket

what times does your car run in the 1/8th to get the 127 at the top end?

i guess we can lighten it up some too

thanks

BW

 

[azgn]

100 mph in the 1/8 will usually = 125-6 in the 1/4 on my car

I need 102 for 127-8

dunno if the 62 mm gained anything or not....it was done a while ago

yeah, the cheap & dirty way to go fast is lose weight (my pig weighs 3720 with me in it, but the a/c blows cold on the way home from the track....)

 

[Quick6'n'-K.C.]

what were your 1/8th mile times when you were going 100?

6.90's??
what was the 60' like

thanks

BW

 

[turbonatr]

My GN runs 6.80s in the 1/8 at 100-101mph. 60ft. in the 1.50-1.52 range with a best of 1.47 off the foot brake. In the 1/4 the car runs 10.70s at 125mph+.

You're going to need more boost to up the trap speeds. I would do that before dumping money in the car with more parts. Run straight race gas (116) and crank the boost. Like already mentioned, you are going to need a good 50hp to pick up 5mph. Run race gas, 28psi and tune her. She should do it.

 

[Quick6'n'-K.C.]

thanks for the reply,

well adding race gas is just too easy, i know it would be possible to run 100 with dialing the car in on race gas, but then during the week on pump gas it wont do it-
he just wants it to run faster on the streets all the time...

this is his daily driver car

so its a radial tire,pump gas/alky, drive to the track and take to work the next morning kind of car-

we are just trying to get the most out of the combo without pushing the envelope too much.. kinda staying conservative with the lower boost levels... for now


i guess next friday with the new chip from ERIC MARSHALL we might be able to gain 1 mph with more time with the new convertor and chip... the chip is has more timing and higher duty cycle


we were battling low EGT'S all night, only 1500 all night, finally when it got to 1580 it gained 5 mph
once it got to 1620 it gained 3 more mph netting the 120.86 as the highest the car has ever gone-
i think it was the fastest MPH street car at the track last night, good to be envied by everyone watchin

 

[turbonatr]

There is one guy around here (or ones of his buddys?) that went a high 10 second pass on pump gas/alky, don't remember who, though.

Maybe a dyno tune is in order to try to find the 50hp you are looking for. It is there for sure with an increase in boost and race gas. Perhaps an upgrade to a Precision .85a/r housing may get you 1 or 2mph.

 

[Quick6'n'-K.C.]

i do have a PTE .85 housing setup for his downpipe sitting on one of my te45a turbos.

since his is a garrett maybe the PTE will give mo power???

once the te45a is dead, its getting upgraded to a 70

do you think 50 horses is enough for 4.5 MPH more in the 1/8th?

i was thinking more like 70 ish or more...

i guess we will find out

thanks for the input

BW

 

[turbonatr]

50hp at the wheels should be good for appoximately 5mph.

The PTE .85 housing should be worth a few more ponies over the Garrett housing. Since you already have one available, it's definately worth a shot. PTE claims their turbine housings are worth 20hp over Garretts.

 

[azgn]

and PTE is trying to sell stuff......the housing deal falls into the same catagory as bigger TB's....when you are going real fast, you may see some gains.....my experience (and I've tried 'em all) says the Garrett is best

 

[Scott231]

we want it to go 100 in the 1/8th, what can we do besides race gas and slicks?

Beyond that you are also going to change chips, so you may also be changing timing, fueling and/or boost.

You may not need "another 50-70HP" if you simply launch the car harder. This guy's biggest problem is the little radials(?) that only allowed a 2.0 60'. I found on my car that harder launches brought the 1/8 and 1/4 miles ETs down and the 1/8 MPH up, but the 1/4 MPH didn't vary as much. Essentially, you are applying the maximum 'overall' HP for a longer period, earlier on the track. But a motor that only puts out X amount of HP, will only go so fast (MPH-wise) in the quarter mile.

I attained several passes in the 1/8 mile 6.90 range at >100MPH and only went 121 in the quarter.

 

[azgn]

Scott, if you were only hitting 121 in the 1/4 and 100 in the 1/8, I'd say you were pooping out on the top end....any TR worth its salt should pick up 25+ mph in the last 1/8?

don't think an improvement in 60' time is gonna help out the 1/8 mph much (if at all...we are still talking hp)

he's gonna need more ponies....

 

[Quick6'n'-K.C.]

thanks for the info Scott-

well, the reason for the 2.03 is it has a pretty good size header leak and it was test and tune night-
once the car hit max boost, it would haze the tires to about the 1/8th mile- last few passes it finally hooked good and got the MPH we were looking for-

i agree that the car could use a few 1.9s on radials, but we noticed that the boost comes on too hard and does nothing but head for the wall got it on video, not cool

i guess we will get some more tune in time friday and see what happens

BW

 

[Scott231]

Originally posted by azgn
Scott, if you were only hitting 121 in the 1/4 and 100 in the 1/8, I'd say you were pooping out on the top end....any TR worth its salt should pick up 25+ mph in the last 1/8?

Yeah well, mine wasn't worth salt See!

don't think an improvement in 60' time is gonna help out the 1/8 mph much (if at all...we are still talking hp)
<snip>

Sure it will...he's already hitting 120 in the 1/4, he has the power. What he needs to do is move up on the HP curve sooner.

 

[azgn]

I will go waaay out on a limb and say if he doesn't change his HP and just gets a better 60' (because of traction) he will actually slow down in mph in both the 1/8 and the 1/4..

this is what happens with every car I have been around..add HP, go faster......don't add HP, get better traction, slow down (better ET, of course, but slower mph)

now, if he can change the characteristics of the engine such that it develops more power quicker (and stick it to the ground), then what you say is probably true (and maybe that would happen if he launched the car at, say 4,000 rpm)

BTW, 120 in the 1/4 usually equals about 95 in the 1/8....

 

[turbov6joe]

I believe that night Zak's GN was picking up at least 25 mph from the 1/8 out the back door. IMO the radials spinning some in the 1/8 allowed the motor to come into its "sweet" spot sooner than if it is being drug down by some good hook'n slicks, not to forget that the hard radials just give more MPH anyhow.. I agree that the quicker ET with the help of slicks might drop a little bit of MPH overall, and with the local track bust'n balls about rollbars, this might be the only way he will be allowed to run there for any lenght of time; don't ask me how I know My TTA slowed down MPH wise switching from Nitto DR's to MT's, on the other hand because of obvious reason my ET's also dropped. I think Zak his going to hit that perverbial wall real soon with the alky/pump combo and will need to step up to some 114 to take it any further. Alky is only going to take someone so far before it cannot do any more. It we were to convert his 60's down to a decent 1.6, his car would have been running DEEP into the 11's no prob.....not too damn shabby for a NAPA car and the low boost he was running. That TE45a he uses really isn't singing as good as it could untill 24-25 psi anyhow, so maybe it has a little more in it??? All I can say is it took me literly years and mucho $$$ to get my GN to run 120+ mph, and he has done it with minimal money and a whole lot of driveway parts. Now I finally have another local LC2 powered car giving me a run for my $$$

 

[Quick6'n'-K.C.]

Originally posted by turbov6joe
It we were to convert his 60's down to a decent 1.6, his car would have been running DEEP into the 11's no prob.....not too damn shabby for a NAPA car and the low boost he was running.

All I can say is it took me literly years and mucho $$$ to get my GN to run 120+ mph, and he has done it with minimal money and a whole lot of driveway parts.

Joe-

not too shabby for 160K pistons, napa rings,bearings,cam,lifters,timing chain,valve springs,trans cooler,intercooler pipes,DIY alky kit,head gaskets and TTY headbolts, ect ect...

seems to work for now, time will tell, I believe he has 7K on the new motor so far...
i think he could give you a run for your money this friday

dang, just realized your trans is kaput

BW

 

[8UWITH6]

Dont worry about the rollbar problem. I think Ive got Zak talked into going to MOKAN Dragway in Pitt on the 17th. Maybe he can do low 11s on slicks there...........

 

[Quick6'n'-K.C.]

as of tonight

with the new chip the car did the following

car picked up to 95.56 in the eigth and 121.01 at the top-

sixty foot dropped off from 2.03 to a better 1.94 and the car went 11.78 at 121.01 at 23 psi of boost on pump gas and alky-

has header leak fixed and still gettin used to the car...

went 7.72 at 95 on a 1.94