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  1. T

    Spun a rod bearing - SC Aluminator block

    Here's another thing to consider. Detonation can/does pound out rod bearings. Do you run pump gas with your blower setup(s)? It does not provide alot of margin IME. Another possible root cause. TurboTR
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    Long Awaited Turbo build...

    If you're wondering about exh backpressure, just measure it. It's not hard to do at all. You'll likely have difficulty measuring much of a difference between the .96 and the .81. You will however get the turbo to spool earlier/faster with the .81, with little if any actual penalty in terms of...
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    Did the oil filter relocation today

    Nice work. But man, especially for the oiling system, I'd take out the hose barbs and clamps and put in AN adapters and braided stainless AN lines! JMO. TurboTR Oiling plumbers nightmare on the street v6 Buick, lol.
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    Whipple HO calibration 2006 GT

    No explanation. Combustion noises that sound like pinging are almost certainly pinging. Best test would be to run a full load of high octane fuel and see if it changes or stops. Or take several degrees of advance out of the calibration and see if it changes or stops. Assuming your wot a/f...
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    Long Awaited Turbo build...

    That's part of the answer to the spool question, above. .96 is really too big for this app. It'll work but it's a bit oversized at this level, and there is a response penalty to pay for that. Personally I'd keep a single street app at .81. It would still support 1000+ hp like that, and spool...
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    Brenspeed B302- anyone have one yet?

    And taken a look inside or run it yet? TurboTR
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    Can the stock oil pressure "gauge" be converted to a real gauge?

    Well I ask because older cars (pre-S197) can apparently be converted ~ easily by removing a 20 Ohm resistor and changing the sender. Assume our S197 gauges are just on the CAN bus, no? Thanks, TurboTR
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    Can the stock oil pressure "gauge" be converted to a real gauge?

    Anyone know about this for S197 GT? Thanks, TurboTR
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    New FRPP 3v CNC'd heads

    I'm wondering how much the new C&L 3v heads will come in at! TurboTR
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    Problem with boost on the dyno

    The way they show it is the old standby "deltagate" mode. Like shown here: If I follow the thread right, the boost dropping as you describe seems to suggest the controller can't get enough pressure to the top of the wg to keep it closed enough when the flow and pressure gets higher. So...
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    Problem with boost on the dyno

    Well it's maybe not the cause here, but I do recall years ago that some turbo Buicks with big turbos (back when a 76 was new and big) were dropping boost like that and it was very puzzling. Turned out that some part of the intake setup was actually collapsing under heavy air draw. Like the cone...
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    closed loop/open loop

    If you mean closed loop at WOT, basically no in our case with switching O2s providing the feedback. The regular switching O2s are designed and good for one thing only really- sensing stoich a/f ratio, by telling the PCM that the a/f ratio is either rich of stoich or lean of stoich. But it...
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    06 GT with FRPP/Whipple HO kit- can we get a 2.9L onto it?

    Thanks. I contacted Adam and apparently he only deals with K-B now. TurboTR
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    06 GT with FRPP/Whipple HO kit- can we get a 2.9L onto it?

    Has anyone here done the conversion? Car has a Cervini cowl hood, so hood clearance is not much of an issue in my case. Seems doable with a few key pieces. The alternator is in the way. The water crossover is as well. Can the Shelby water crossover setup bolt on to fix that? And need a...
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    This cam good for turbo?

    If you're running alot of boosted power, generally the exh side is having trouble getting the exh out. That's not hard to imagine. Seems it should open earlier is what it should do, not have "less duration" in general. That seems like an odd generalization, to me at least. It does make sense...
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    HTA OR VGT Turbo = Better Turbos

    The VNT is the sh*t. Too bad we don't have many Garrett options for gasoline use, though Holset has several. I worked on a diesel emissions research project back in '98 that had a VNT turbo- the turbo could even spool at idle lol. We were closed loop controlling exhaust backpressure using the...
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    Dyno results after installing Pypes LTs

    If you're interested 470 (and it seems you're into engine tech already, good man :) here are some related comments. Modern engines have moved a cat or pre-cat to as near as possible to the exh ports as they physically can. The reason you quote from the article is exactly why. On an EPA emission...
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    Dyno results after installing Pypes LTs

    Well maybe we can have a good, interesting tech discussion, even in the year 2010. I'm game :) I'll start off with these questions 3 (hehe)- if the hp increases because the air flow through the engine increases with the headers- how does that increased air flow sneak past the MAF then without...
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    Dyno results after installing Pypes LTs

    Good article 470, all valid points. TurboTR
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    Dyno results after installing Pypes LTs

    Don't forget 470, there's also a MAF meter at the front of the whole process telling the PCM how much air is flowing in, so it will register more MAF if there's been any flow increase. Since it knows the airflow, it can still provide the right a/f ratio. TurboTR

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