justaguy

Just wondering. What do you think a sub 2 min car over the top at T-Hill would cost? Just wondering if any one has done it in an honest to goodness sub $ 10,000 car?
Brian is getting close real close. I'm a few seconds behind but still getting my car sorted. We probably have about $7K a piece into each of our cars at the moment.

I would like to hear from some one who has done it and I would like to know what you were driving.

Also wondering about miniumn power to weight required to break 2 mins. Brian and I are about 10:1 with no aero at the moment.

I'll grab another beer and look foward to reading your comments.

IcemanG17

damit...no drinks for me for another 30 minutes

It appears the "minimum" is a GTS3 car thats well sorted (11-1 power-weight) with fresh tires and lots of aero..... I have "heard" the local top GTS3 "can" run 1:56 over the top under ideal conditions with an excellent driver

I signed up for Saturday the 29th at Thunderhill....hopefully the weather is good.....if it is warm enough I will try my Michelin slicks!!!!!!! I have heard the Michelins are two seconds faster than Pirelli's.....but who knows....worth a try since they were FREE

justaguy

Brian
Your car should be much quicker now with the left front upper control arm firmly attached. I found 5 seconds after I tightened the bolts. Makes a huge difference apparently.

IcemanG17

bolts-schmolts......you just had the "advantage" of variably changing toe out....makes for an exciting ride!!!

Don't forget you were also short shifting far too low....my little 4.5L engine must be spun to 6000rpm to get peak power....

mark kibort

Not in a 928. i think mine is the fastest thing at laguna at the cheapest price. ON DOTs, i never would have broke 2min with the old 320rwhp engine at about 18K to build it. 10k? no way. not possible. just the racing equipment alone i factor at $8k with any car (i.e. seat, belts, rims, tires, cage, fire system, suspension)

with the stroker, which you could do that cheaply, and end up with the same HP bolted to the stock stuff underneath, that gets you to 1:59 but for another 5k min, but could be $10k more if done right, and still much of it yourself. (375rwhp)

the BMWs are probably the cheapest, if you do a lot yourself, as you can get some pretty hot e30s with 230rwhp and weigh around 2400lbs. on slicks, they can break 2min at thunderhill, but not near as fast at Laguna.

remember, thunderhill is a rare track, where handling is good for ripping up half the course ( start finish, to turn6) the rest is mostly hp-weight.

danglerb

Maybe as tires improve some really really good tires would be the best investment from a do it once perspective?

Cheapest power I am thinking is Euro hybrid, maybe with more cam? Greg's tuned X exhaust, maybe some special Porken chips, maybe 104mm pistons? Should be around 350 rwhp.

dprantl

How cheaply can you get an old '85 US 32v for? Slap on a supercharger and that's ~$10k total and not even a lot of work, with up to 500rwhp possible. I don't think it can be any cheaper than that with pretty much any car.

Dan
'91 928GT S/C 475hp/460lb.ft

ptuomov

If stroker is cheap and 104mm pistons are cheap, you guys have figured out some way to build these things that the rest of us are not aware of.

I agree basically with this. If you can get a running 1987 S4 that has 9.4:1 CR and thick top pistons and then slap a centrifugal supercharger on it, it'll make a huge amount of power and S4's not "GTS fat." The S4 cams start falling off the cliff when the centrifugal supercharger really kicks in, so two negatives multiply into one big positive. It still won't be under $10k all things said and done, but might be under $25k.

69gaugeman

It also depends on what you mean by $10k. If you do all your own mechanical work, you could go Imo000's route and grab a supercharger off of a camaro and fab up your brackets and intake and such and you will only be into it for max a couple of grand, plus the car....

mark kibort

cheap is to find the used 968 pistons and they are out there. get the rods and the stroker crank and slap it all together. bottomline, you are talking $23k min for the entire car. (based on starting with a decent 5 speed S4 at about $8k car cost)
Now, if you get a freebee like scot or Brian, you can make a pretty decent car for about 0-$2k plus all the race stuff of $8k = 10K, but its not going to break 2min.
you need to kick up the HP to at least 330 rwhp to do it. $10K plus the 50 might to it.

one thing that brian is really distorted on ,is his crack cocain slicks! it tosses all the performance costs out the window, because slicks do SO much, expecially at thunderhill. But, if the question is getting around t-hill in 2min and nothing is barred, then a very nice set of slicks. (hopefully free throwaways) and a light 928 with 275 to 300rwhp, might do the job.

mark kibort

spec mustangs are going for $40k right now. near 2:01s

if you build it yourself, its still going to cost about $8k for just race car type mods (to get it legal to race).
Now, if we are just talking s-box, DE type of cars ...............well, then its possible. NO safety equip, just super light and on a set of slicks? certainly possible.

Speedtoys

Colin's cams with a cent. SC...OMFG...

Jim Devine

This:

http://blog.cheapoair.com/image.axd?...rd+Branson.jpg

Plus this:

http://thecoachcoach.org/files/2010/06/stig.jpg

Should get it done...

IcemanG17

Everyone......don't be fooled by the BIG HP bandwagon......yes it is important, but it is by far the least important part of a racecar.....handling is #1, weight, balance, braking are far more important that power alone....

Casper is quite light...& there is more room to go lighter....possibly 2550lbs with some extreme measures... Casper also is surprisningly NOT nose heavy....52.6% with me in the car and 1/2 tank....it is the fastest turning (think direction changing) race 928 I have ever driven..... Small steering wheel, solid steering rack bushings, hard A arm bushings and heim jointed suspension all contribute to this....

My opinions....my best is 2:02.12 right now with a 2:01.41 theoritical best....on USED slicks with NO aero at all.....Fresh slicks is probably a second easy.....aero is much more.... I am going out again the end of this month.....if the weather is decent we shall see... I think Casper at 300whp could break 2:00 over the top....for sure with aero....

justaguy

The $10K figure is an all in figure I paid $5k for the car I have since spent $2G's getting it sorted. I have bought a 5.0L bottom end to build a euro Hybrid 5.0L.That should give me about 300RWHP or 10:1 HP/weight ratio. That would keep the price under $10G and bring the 2:00 min goal closer but might leave it just out of reach.

It seems to me to be competive in any class the 928 would run in at T-hill you have to run sub 2:00 Min laps. Any thing slower is just a fun DE car.