cruzin2

Hey werks. If I am following the the links above correctly, it looks like he put in a 2nd stage stage scavenge pump and some baffling in the pan and sump. Looks close to an ARE solution but using gm hardware. Can't say this was the cause of the piston failure but less than optimal oiling is never a good thing.

Z06Ronald

Is this the car that you mean?

http://www.lsxtv.com/news/video-app-...pe-horsepower/

Z06Ronald

I have a question that is related to your second upgrade. Can you elaborate a bit more about the advantages of the Vacuum Adjust Valve than what is said on APP's website?
Thanks in advance!

Ronald

Katech_Zach

You should probably consider the whole story. This engine had over 75 hard track hours on it when it was sold. I don't know how many hours were put on it after that. We recommend a rebuild at 30 hours with new pistons. When you go over double the service life road racing, pistons are going to crack. That's like running the 24 Hours of Le Mans over three times back to back to back without rebuilding the engine. I'm not surprised.

AORoads

I thought the "universal way" for gauging wear and tear on many mechanical things like engines was hours of operation and not miles. No criticism of OP.

08velocity

Amazing car !, Amazing tracks ! and I am now completly envious !!!

KimZ06

Yes.

As I understood it with the vacuum valve it controls the pressure in the crank house to not more then 0,7Bar. Over this the engine will throw oil in to the inlet and burn it.

KimZ06

As written before I am not complaining about the build quality of the engine. Do you track it these things can happen. But if what you say about the hours of the engine is correct and you have informed the pervious owner about this then he did a sneaky move to sell it instead of fixing it. According to him the engine was only gone 2-3 track days a year and 1 last year before he sold it. And after the springs where changed the engine had much more life in it :/ This just confirms my decision that next time i build a car from the scratch! All in all even if its been a long and expensive way to go I am very happy with my Toy.. There is nothing touching it on the track and it looks amazing

Z06Ronald

Thanks for your clarification.

KimZ06

Yes, I was very lucky. If the pistons had split it would have bin a whole different story!! So all in all I am very happy it went as it went! I don't know what was available in 2007 but it is just normal that things evolve and we learn as we drive The thing for me is that i live and Work in Norway, So I need the car to be maintained here in Europe. But Now I know the exact milage and runtime of the engine and can plan the maintenance after this!

Katech_Zach

Not saying that you would, but the way this thread was going actually swayed one reader from purchasing an engine from us. I had to clear the air.

Werks

That's is true, now that you know the time on the engine it is a lot easier to plan out maintenance. That's the thing with buying used cars, it is a bit of (as the saying goes) a double edged sword! You save a ton of money over building it your self but at the same time you are taking some risking. If you look at things though to have bought the same year used car completely stock and built something like what you got you would have probably spent around $100-$120k. So if memory serves me correct picked up the car for around $75k so you saved a whole lot of money going the "grey market" route that you did. Having lived in Europe I do not even want to think what it would have cost you if you bought a car there and did same level of build lol!

The key though now I think is just staying on top of the maintenance like you mentioned. If the car starts idling rough or seeping oil, get it looked at don't drive around it. These maxed out track cars are almost like having a super model girlfriend, they take work, need to be pampered a bit, like to go to the spa (garage) frequently for facials, massages and "regular maintenance" and if you do not treat them well, they will through a temper tantrum and completely ruin your day. But if you treat them right they make you look like a super stud, make all of your friends envious and at the end of the day (or night) will (hopefully ;-) rock your world

Me2d

No no, I can live with 30 mh interval - for me to get the car to Netherlands is about the same cost as to get the engine to the USA and back. The difference is in time as the shipping to the USA is about 6 7 8 weeks one way.

You have wider range of engines - I'd like Your 472 TA tuned for E85 which is not the substitute for APP race engine (really proven with Callaway competition - Euro GT3 champions) I'know the guys from them, and they are busy all season long

I want to say that the decision is quite complex

Me2d

Base price of Z06 is 110k USD
And no-one except about 3 racing teams is able to do a build for You.

There is only a few Corvettes here because of GM's incompetence.
And they are struggling in racing because of rules tailored for Audi and Mercedes (typicaly maximal displacement :-() - e.g. one large importer of Corvettes is seller of and races with Merc SLS - he does not want to see 7 year old model beating brand new supercar....
Typically Callaway Competition shifted from GT3 to ADAC GT Masters because of this...

carpe dm

Please update us when you can! Enjoy!

Z06Norway

You might want to talk to other customers with the 472 track attack, do a search and see if you find one ;-)

Rune

Me2d

I have just "heard" that we already met F2F in Spa 07/2009 - in Les Combes (the black Z06 behind You)...

KimZ06

This years first outing at Spa, Belgium:

Z06Ronald

^^^ Nice track, nice car, nice video.

1bdvet

Welcome!