Pablo

iTrader: (1)

I went to adams tonight, had the fastest time of the night. Ran a new best of 45.63 and several other 45s and 46s.

Since the last time I was there I moved the seat dramatically more upright and fwd, and lowered the phb. I also got much more powerful headlights and got my highbeams working. Being able to see and having the steering wheel much closer helped my driving DRAMATICALLY.

One evo showed up and ran a 45.68 and a couple of s2000s ran 47s but the majority of cars were in the mid 50s.

Frank (with the red thirdgen TA) showed up and did amazingly well on 245 street tires before he blew a brake line. I'm sure he will share his times if he wants.

As it stands right now the biggest gain I can make is in the center hairpin, the car pushes like crazy at full lock if I'm even touching the throttle at all. If I'm off the throttle it loses massive speed and still pushes on that center hairpin. The rest of the track the car is almost 100% balanced now with a slight oversteer.

Just wanted to give my thirdgen brothers some motivation. Thirdgens CAN handle with the best.

BTW Fingers told me the fastest time ever on the track was in an evo with a japanese pro driver at the wheel, 43.3

Pablo

iTrader: (1)

http://www.youtube.com/watch?v=6wNMPI-rmbY here's the clearest video my wife got.

I reeled the S2000 in that was in front of me

Z28FAST1

Way to rep the 3rd gens...drop in an LS1 and go for that record!!!

skinny z

Well done.
I would assume that you now have your posi working. What was the problem?

Frank 84 Bird

Yesterday was my first time to run at adams. My best time was a 50.08 on the third session my rear brake line blew so I had to call it quits for the night.

Pablo's car is crazy it sticks to the track like glue. It shows you don't need alot of hp to be fast around the track.

Running around the track was a blast I hope some more third gens will give it a try

Pablo

iTrader: (1)

Z28Fast1, No LS1 for me for awhile. Some plans have changed for me so I am just rocking the 305 for now. Its got to be a pure handling car to make up for the lack of power. I kind of like it that way. Part of me wants to prove that first off, Thirdgens are a great foundation for a handling car. Second off, you don't need a single aftermarket tubular part from any of the vendors to have a world class handler. No STB, Wonderbar, SFCS... stock torque arm, stock a arm, stock brakes. Put money into the wheels and tires instead of all that other stuff and you will lay waste to the competition that does the opposite.


SkinnyZ yes I fixed the posi. I know I promised you pictures and I have been slacking on that. I have just been really lazy about uploading them from my phone. The trac lok diff doesnt use clutches in the sense that you would think of a clutch. The disks dont have a friction material. They are all metal and one disk has an outward swirling circle (sorry don't know the proper name for that shape) machined or pressed into the surface. The opposing disk has lines that are perpendicular to the circle. The only way I figured that this can work is through hydraulic resistance. The swirl pulls diff fluid in and forces it to compress and then shear as it makes its way across the perpendicular slots. After looking at this I decided not to put any posi additive and use the heaviest fluid I could. I got 75w140 iirc. It works much better now, no chatter at all. The only problem is that with this design, I think the viscosity of the fluid more heavily affects the performance of the posi. On the track, as the fluid gets hotter I can tell the posi starts to not work as well. The fluid is getting thinner and thus not resisting flow out of the clutch grooves as well as it did when it was cold. If you just drag race then I do not believe you would ever notice this. Road course stuff is way more brutal on the differential in this regard I believe.


Frank, it is a great time out there indeed. Hope you get your brake line fixed. I will let you know next time I go in case you want to come out again. It's good to have another thirdgen out there.

TPI TERR

iTrader: (9)

Looks like fun!! Great job. Iirc you have minimal suspension work huh? I saw your roll cage, tubs and nice sticky tires on ur ccw classics.. adjustable shocks, and lcas?
I think I would be scared driving at those speed with stock brakes. What are your future plans?

Grey Goose

Well done Pablo! It’s good to see you putting down some amazing numbers. I’ve been super busy as of late but as soon as things settle down I’ll be back out there playing with the local talent

Pablo

iTrader: (1)

Tpi terr, I would say I have functional suspension work. Koni yellows all around, tall low friction ball joints, poly bushings on stock sway bars and front ctrl arms. 850ish/250 springs. Aluminum rear lcas and phb. Phb lowered. Rear axle moved fwd 1.25". Dana 44 w/ 3.73s, pbr rear disks, jegs adj prop valve. 1.75 neg camber, max caster, 0 toe. No interior but 6 pt cage w/ al race seat and harness. Ac delete, headers and cat back And a lot of little tweaks. Everything else is stock.

Nothing to be afraid of with the stock brakes unless you plan on doing a big track. With a prop valve and pbrs they have plenty of heat capacity for this stuff. My brakes are awesome now.



Mike, thanks for the kind words, I hope to see you back out there soon.

skinny z

[QUOTE=Pablo;4849833]
SkinnyZ yes I fixed the posi. I know I promised you pictures and I have been slacking on that. I have just been really lazy about uploading them from my phone. The trac lok diff doesnt use clutches in the sense that you would think of a clutch. The disks dont have a friction material. They are all metal and one disk has an outward swirling circle (sorry don't know the proper name for that shape) machined or pressed into the surface. The opposing disk has lines that are perpendicular to the circle. The only way I figured that this can work is through hydraulic resistance. The swirl pulls diff fluid in and forces it to compress and then shear as it makes its way across the perpendicular slots. After looking at this I decided not to put any posi additive and use the heaviest fluid I could. I got 75w140 iirc. It works much better now, no chatter at all. The only problem is that with this design, I think the viscosity of the fluid more heavily affects the performance of the posi. On the track, as the fluid gets hotter I can tell the posi starts to not work as well. The fluid is getting thinner and thus not resisting flow out of the clutch grooves as well as it did when it was cold. If you just drag race then I do not believe you would ever notice this. Road course stuff is way more brutal on the differential in this regard I believe.
QUOTE]
Thanks for that. Yes, I understand that the TracLoc may not be the best for road racing. There are others such as a Zexel Torsen type that don't suffer from the typical issues associated with cone/clutch type posi units.
Good to see you're out there racing and having fun!
Thanks again.

injdinjn

Need to release some pent up pressures, guess I will have to remember to go in a week or two.

1989GTATransAm

iTrader: (3)

Hmmmm, I thought for sure Jerry would be a participant.

Guest

Very impressive. Your short wheelbase is showing , that car is on rails around the rear banked hairpin. I would like to get a lift out there next time and see it in person. I will check with a few friends and see if anyones interested in driving out there.

You have a spare seat for ride alongs?

Pablo

iTrader: (1)

I don't have a seat in there right now but I've been thinking of putting one in precisely for that purpose. If I get one in there I'd gladly give you a ride.

And yes, that banked turn is really something. I kept hitting it at faster and faster speeds yet it just felt like it stuck harder and harder. I was having to keep my speed down simply because the exit speed was high enough that it made the next turn problematic.

I will be heading back out there probably in a couple of weeks. There are also rumors that Apex will be having an event on the 17th. If that is true I really want to make it out for that. Apex is a higher speed track.

Pablo

iTrader: (1)

Yeah I've been hoping jerry would come back out of the woodwork. I'm guessing he has been busy with work lately. His car is awesome, I would love to see it back out there.

92purplehaze

iTrader: (8)

if a shorter wheelbase works better you should get this and start building it up....http://cgi.ebay.com/ebaymotors/85-CA...item1e621be2c3

Pablo

iTrader: (1)

Hah... I smell a photoshop on that one. No one would go through all that work and run cheap stock 15" wheels. Then again I have seen some pretty weird stuff over the years.

Guest

No, that thing is real. Its been for sale for quite some time though... after all, who wants it?

Grey Goose

Yeah... I tend to prefer a little junk in the trunk myself LOL!