orthojoe

Just watch the main straight action at 3:15. My exit speed should be the same as his since I had to stay off throttle to avoid hitting him from behind. And watch the in cabin view so there is no distortion.

audipwr1

yeah see your point - he was later to gas at exit and def lifted at 1 - but yeah not as quick as one would think

ChrisF

I think you're correct about heat soak being a problem. It should have stomped you down the straight.

As far as driving, your lines were MUCH better. Z/28 was pretty sloppy. Not comparable drivers.

OT: How did the M4 hold up throughout the day? Given the E92's propensities for melting brakes, curious if they solved that problem on the M4. Also curious if it suffered from any apparent heat soak given it's also boosted.

Nice driving!

orthojoe

Thanks. Agree it should have stomped me on the straight regardless. Still 2 seconds off my PB that day, still off my game lately, but I'll take the compliment anyway.

I can't say much about the M4. The only time I saw it was that brief amount you saw on the video. Didn't get a chance to talk to the owner. Great looking car.

surlynkid

That was not a fair fight. That was no pro. Good job though.

orthojoe

Fellas, I'm purely commenting on the power down the main straight at 3:15 in the video and ignoring driver ability.

savyboy

1. Was he adhering to the factory specified break-in (or trying)? It's sub 4000 rpm for 1500 miles. If you don't know the answer with certainty, there is really nothing to talk about. Z/28's are still most all new, so most not broken in. What are the facts in this case?

2. In 98f ambient conditions my Z/28, after being broken in and track prepped as specified in the owners manual ran 100% ok during a track day, no overheating (at all, period, full stop) and certainly no heat soak. Most of each session it was between 3500-7000 rpm and no mercy was shown. Get over it already with the ill-informed magazine article about overheating. The Z/28 suffers with overheating to the same degree as a Boxster or 911, that's a fact I've personally experienced.

Cheers

orthojoe

Pete, do you know any facts about this driver and the car, or are you also making assumptions that suit your side of the argument?

Do GT3s overheat?
I will admit my spyder ran hot (oil temps in the 270F range) until I installed the OEM 3rd radiator (now never higher than 240F), but that car isn't marketed as a track car.

If it's not from heat, then another possibility is the power isn't has high as advertised from the factory. The only facts here are that I have video of a Z/28 that isn't hauling *** down the straight like it should. From there, people can come to their own conclusions. My conclusions aren't any less valid than yours.

savyboy

I just watched the video, after having posted my previous comment. Having owned and vigorously track a Boxster Spyder, and now owning a Z/28 in which I have two track days under break-in and one out of break-in, I can assure you the Z/28 in the video was not using all that was at his disposal. In my opinion he was shifting at 4000 rpm, otherwise things would have looked much different. That Z/28, 100% stock, is a 1:36/1:37 car at Laguna Seca (that's GT3RS on slicks lap time).

orthojoe

That may be true. OR, the car makes less HP than advertised (will be interesting to see what times Pobst does if the z/28 makes the MT DCOTY competition), OR heat is slowing the car down.

I guess we'll never know for sure...

savyboy

I don't know the car or driver. GT3's most certainly can overheat, I've hit the coolant temp red zone in a Spyder, GT3RS and 4.0 on a 100+f ambient track day.

Multiple dyno pulls on stock z/28's have shown it to be massively underrated, when converted to crank hp they have all been around 550hp.

Your conclusions are invalid as you do not know if he was driving gentle while in a break-in period. If you are going to create a kill story, the onus is on you (not me) to know the facts.

orthojoe

So because I'm posting something negative about a car you like, the onus is on me to get some facts, but it's ok for you to make an assumption like the guy was purposely short shifting while trying to stay ahead of me?

I see how this works...

orthojoe

Btw, Pete, I think we both get a kick out of getting a rise out of people. I fully expect you to come right out at me. This is all for the fun of debate.

savyboy

Let's see a video of a Spyder vs a Z/28 where it is known as fact both are running WOT around LS. Then we have something to discuss. It has nothing to do "with a car I like". Dealing in unknowns is worthless if you are trying to reach a definite conclusion.

savyboy

You more than me I greatly prefer to deal in conclusions reached from known inputs. No one can accuse me of not preparing a strong case, with strong foundation for whatever argument I put forth.

Spyder, Z/28. GT3, Mono, other toys are all mighty fine and I like them all, no axe to grind. Well other than coolant fittings, centerlocks, clutches, oh dang it...