Dear Vette-Forumers,

I bought a Procharger D1SC (sn: 28172) type supercharger for my CHEVROLET CORVETTE CONVERTIBLE 6 speed manual (VIN number: 1G1YY34UX55132048), in August 2006. The car has run till now totally 2.200 mile, from which I drove 930 mile with the Procharger. Each time I used the best quality octane 100 fuel used in Europe, plus NGK TR6 plugs are mounted in the car.
For your information: in Europe the purchase of the Procharger is not easy neither cheap, for this reason we were totally careful of mounting and using it in the car.
Last week, after a 50-km highway-use, I heard a "knocking" from the motor before stopping the car. I took it to the service, where the mechanic astonishingly realized that the motor was burnt down, the valves were also burnt, the sparkplug was melted down, one of the pistons head was tore off, another one was sintered, which finally caused the "knocking" sound.
There were already two oil-changes in the Corvette inspite of the moderately few-miles-running, and I already changed the oil also in the Procharger, according to the instructions.
Please give me advice what kind of new engine I shall purchase, because I do not trust repairing the existing one.
I wonder whether the guarantee of the Procharger covers such cases, but this special incident was shocking to me. I want to mention that the Procharger unit is unharmed.
Please check the pictures at ftp://ftp.acomp.hu/pub/Vette/

Waiting for Your suggestions.

Best Regards,

Gabor Keresztes

[IMG]ftp://ftp.acomp.hu/pub/Vette/[/IMG]

 

feel sorry for ur car man ...
but if u don't mind me asking few q

what level of boost ur running?

what tune you used ..i mean did u get the procharger handheld or u send ur PCM to be prorgrammed..?

please I'm just trying to figure out what went wrong coz it the 1st time i heard such thing and a lot of people here are running 1DSC unit in their car it could be wrong A/F ratio
and for the new engine u can always go bigger CC now and there are a lot of forum vendor are willing to help...

 

It sounds like the tune on the car was way off, 100 octane should give you a fairly large safety margin...so it must be WAY off.

Good luck!

 

It is hard to say exactly what caused the piston to crack from the pictures, but there is a lot of oil or varnish deposits on the pistons and combustion chambers of the heads. Oil on the pistons can cause detonation, if it was there before the damage occured than the use of forced induction just added to the problem.

Purchase an engine built with forged rods and pistons with a compression ratio of 9.0/1 to 9.5/1. Bob

 

- My dealer sent the PCM by mail to fastchip.com and they made the programming. As I know they made a simple 6psi to D1SC.

Until this time, the Procharger D1SC was excellent. The car has run strong and without any problem.

Has anyone an idea how to get a new complete engine, which fits well with the Procharger D1SC?

 

First, sorry to hear about your engine failure.

On your future build consider adding fuel pressure and A/F (air fuel ratio) gauges to warn you if problems are about to arise. If you can’t do both then at least A/F is a must.

As far as engine builders there are lots of good ones to choose from. I would select very carefully as it is being shipped overseas.

Double check your PCV system because as mentioned above you do have allot of oil buildup present.

Oh, for a good mail order tune check with Charlie @ RPM Motors (a forum vendor).

Good Luck,
Mike

 

How much boost did you really make, because it was more than 6 psi.

 

Sorry about your engine, this is why i'm afraid to mess around.

 

It is very unfortunate and highly unusual. The apprent trouble stemmed from too much boost and not enough octane to handle it. The gentleman has a D1SC upgrade supercharger which was never meant to only make 6 psi and is unlikely that it can be pullied down that low on a 364 LS2. He likely has the pulley that is supplied with a P1SC-1 kit as there is a limit to the diameter of the pulley that will fit on the system.

 

How does everyone else run <10psi on these? Restrictor plates?

 

Typically they would run the P1SC-1 @ 6-7psi. If you're not after big airflow why would you want an upgrade?

 

Today I want 6 psi


12 months from now I have a forged motor


Now I need 12-14 psi

Cost to upgrade from a P1 to D1 = 1/3 the cost of the kit

This is the reason some want to run a larger setup, that and if you run a restrictor plate you push the power more under the curve and it comes on earlier...

 

Trust me, I understand the motivation and making the purchase once, but understand there are things that need to be considered. If one size fit all ProCharger would just ship the capable F1C and let it go at that, but you can't always tame a larger supercharger on a stock engine and get the appropriate results, or at least the results you're expecting. In this case he says 6 psi but was likely at 10, however unexpected it may be.

 

True - no method of preventing types of boost spikes are FULL FAIL PROOF

 

That was definitely not the fault of the charger so I cant see why you would ask for warranty info from Procharger, maybe your tuner, but not Procharger. If it made too much boost then it should of been tamed by the installer, and mail order tuning always needs to be thoroughly checked.
Sorry for your issues, but now you can look forward to forging the bottom end and making big power.

 

Hey! thats a Paxton trick.

 

One that is going to create a budget deficit in my household.

 

Still could be an octane issue.. 100 euro octane does not equal 100 octane here in the U.S. Different rating systems.. and looser production tolerances as well probably.

 

- I originally bought a D1SC, because the price was only a bit higher than a P1SC, so my kit was not an upgrade...

- www.fastchip.com makes a standard tuning for D1SC. I do not asked them to made it stronger than normal.

- In Europe the "Normal" gasoline is 95 Ocante, "Super" gasoline is 98 Octane and If You want a really good You can buy 100 Octane gasoline also. I always bought 100 Octane.


DO YOU KNOW ANYONE WHO CAN BUILD ME A LOW COMPRESSION LONG BLOCK FOR THE D1SC?

Thanks for Your help!

 

Actually your kit was a "forced" upgrade to a D1SC with programming as ATI does not offer programming with a D1SC through FASTCHIP normally. Your 4.625" pulley was likely making 10# instead of the normal for a stock LS2 6#. As mentioned before your European octane ratings are different than used in the US. In the US we use a Research+Motor/2 method of determining octane based on set US standards. Your 100 octane is likely the same as our 93/94 pump fuel which isn't sufficient for 10# of boost on an 11:1 stock shortblock LS2. There are several great builders in the US for the LS platform. Check the forum sponsors or Google.