vincentdds

I bet it's worthy every penny.

911/Q45

Up to $55K by 2005.

C.J. Ichiban

correct that jochen has the latest and greatest andial aircooler- a 993GT2 - I can't call it a replica because in reality with the andial engine it's better...I think it weighs 2850 lbs...wow.

chris walrod

For 3.8 cylinder stability over time, I feel the 'machine-in' jugs are the only way to go (with base O-rings). Many have told me to stay away from the 'slip-in' 3.8 kits.

Acropora

I've heard high RPM's are what cause the greatest wear on engines hence the 40hr cup car rebuild maintenance schedule.

Jean

Brad, you are spending way too much time over at the racing forum , most of the guys there don't have turbos and even less have aircooled engines. RPMs is one part of the equation that reduces the life of components, friction is another, heat is a an even bigger one and many other things such as vibration or imbalance in any of the rotating assemblies etc. In our cars, boost is the biggest evil, assuming a well built engine.

Per the GT2 race manual, after approx. 4 hours of race you need to check compression, check spark plugs and replace, check and adjust valve timing.
After 12 hours of racing: Recommended a complete overhaul of the engine.

You need to add to the above practice sessions.

The transmission needs to be completely overhauled after 30 hours of racing.

They didn't run insanely high Rpms.

Vincent, the above might shed some light as to the difference in wear between a race/seriously tracked engine and a street engine with aggressive driving... I would not be surprised if one single lap in racing mode at the track wears out your engine like 10 x 1 mile runs on an airstrip or probaly a throusand miles of hardcore street driving.

ScottMellor

Which makes 911/Q45s number quite astonishing.

dbf73

Jean - what kind of boost did the race GT2's run?

Jean

Doug, factory standard setting was sub-1 bar. However some teams used to run them at 1.2 bar in sprints. I know of a friend who races very aggressively his GT2 EVO in DMV Tourenwagen Divinol and runs it at almost 1.3 bar against full race Vipers and other DTM monsters, but it is a full Gt2 Secan engine and rebuilt about once a season.

Championship Racing and tracking a 993 are two very different things and many thousand miles apart in engine life.

JJayB

Jochen car was a full GT2 conversion not just a 3.8. Andial is still doing special projects and many of these are for their long time customers. One of the things that made their 3.8 special was the GT1 turbos. Currently, Gt1 turbos are not available. If they are they will most certainly do a 3.8.
Jimmy

Stummel

Rule of thumb is that 1 mile at the Nordschleife equals about 20 miles on the street.

The whole body of my track only BMW is visibly suffering after about 300 laps Nordschleife this year. And I am not racing that car (yet).

Jean

Jimmy
I am not sure whether the GT1 nomenclature of Andial is related to their own product or not, but the "GT1"'s turbos were KKK27.2 that were run with 35.7mm restrictors according to the literature. Those turbos are quite inefficient by today's standards.

I don't think Andial used those turbos obviously except for some special "full race track" conversions perhaps, at the time when they used some Thielert race programs, but they could not have used only one stock fuel pump then on those builds if they were to go to 550bhp safely

On the 3.8 turbo street conversions like yours and others here, they must have used KKK16 hybrids or KKK24 hybrids of some sort, most likely 26. The usage of one stock fuel pump gives away that it could not have been bigger than this. The GT1 name could be referring to the KKK24.2 that came with the 993GT race car of 1995-1997, widely known as GT2EVO.

All of the above turbos are still available in the market, but I think that Andial just is not focusing their business on this sort of conversions as there is no real demand among other things, and they give headaches to someone who is for quality and service above all, furthermore, there are a multitude of tuners doing them by now, which was not the case when they pioneered it in the US.

Irrelevant to this thread I know but the statement above about turbos triggered my curiosity.

TB993tt

I think Jean is correct - below are Cargraphic descriptions of the various turbos offered for the 993tt/GT2 - the GT1 description looks about spot on for what Andial were using at the time....
CARP93K1624LH
Turbocharger LH serie
P93 408HP
Price: 2.050,00 EUR /5

CARP93K1624RH
Turbocharger RH serie
P93 408HP
Price: 2.050,00 EUR /5

CARP93K2424LH
Turbo charger LH GT2
P93 450HP
Price: 2.085,00 EUR /5

CARP93K2424RH
Turbo charger RH GT2
P93 450PS
Price: 2.085,00 EUR /5

CARP93K2424LHGT
Abgasturbolader li. GT1
P93 550PS
Preis: 2.085,00 EUR /5

CARP93K2424RHGT
Turbo charger RH GT1
P93 550HP
Price: 2.085,00 EUR /5

CARP93K2426LH
Turbo charger LH Race
P93 650HP
Price: 2.850,00 EUR /5

CARP93K2426RH
Turbo charger RH Race
P93 650HP
Price: 2.850,00 EUR /5

CARP93K2727LH
Turbo charger LH Evo II
P93 850HP
Price: 3.480,00 EUR /5

CARP93K2727RH
Turbo charger RH Evo II
P93 850HP
Price: 3.480,00 EUR /5