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I don't have any knock retard whatsoever. I have 101 octane unleaded in it right now, because I went racing on Sunday. I'm measuring boost with an Autometer gauge. Boost has definitely dropped. I usually run 13.6s at 97 MPH on the 14.7 psi, this Sunday at 10 psi I could only get a 14.3 at 92...

Ian, I have the same problem with a closed exhaust as well as when I open my cutout, which is before the cat. All the boost hose connections are tight and don't seem to be leaking boost. Also, I've tried the initial timing from -1 to +4 with no change. No retard at all. The boost actually...

JWaller, I thought so too. But I completely bypassed the solenoid with a grainger valve that previously allowed me to set my boost as high as I liked. However, no matter where I set the valve, I can NOT get higher than 10 psi. I don't get it.

Okay, I can only build 10 psi of boost at WOT in any gear. Just Saturday night I was building the standard 14.7 psi in all gears. This is with the ECM controlling the boost with the stock chip with new vacuum lines. BUT ALSO, with a manual boost controller that totally takes away all ECM...

I'm at 5,800ft and the lowest I've raced at is 4,900ft. Altitude will effect a turbo vehicle much less than an N/A car. At 5,800ft an N/A engine will lose about 20% of its horsepower. A turbo engine will only lose about 8%.

That's Brian Hartman's house. He builds killer trannys for the trucks on this board. But, I believe, there should have been 4 Syclones and 2 Typhoons. Welcome. I've had my Syclone for little over a year. I LOVE it! It was beat to hell, but I'm slowly restoring it. 70,000 miles, almost all stock...

THANKS!!! Going to do it this weekend. Just the info I needed. Sounds like a clean set-up.

Thanks Brian for having a Sy/Ty mecca less than 2 miles from me. FWIW, I think you have the coolest address in the snobbish neighborhood. Clark. :smile:

Thanks for the replies. I didn't make it to the track because it snowed yesterday. However, when I do go to the track in the next couple of weeks I'm going to try 0, 2 and 4 degrees advanced. I'll post my results.

17.1 degrees scanned at full throttle. That is the total figure. Multiplying it by two would be incorrect. 34 degrees would be excessive on a Sy/Ty. It doesn't knock until the outside air temp gets up to over 85 degrees. And then only a few degrees. So NO it isn't knocking. <font size=-1>[ This...

I have a brand-new GM balancer installed. But the stock 73,000 one hadn't slipped anyhow. The truck is almost all stock except for the mods in my sig and now a manual boost controller, adjustable fuel pressure regulator, Walbro, relocated rubber IC lines and a Jabsco pump. The stock chip maxes...

Right now I have the timing at the recommended spec 0 degrees. I have been running 16 psi on 91 octane and have ZERO knock retard. I'm racing it on Sunday and I was thinking of advancing the timing by 2 degrees and using 101 unleaded for a little extra performance. It is worth the trouble? Will...

My tailgate weighed 35 pounds on a bathroom scale. Which is pretty close, I believe.

At the gate to the dragstrip the girl says, "Is this your tow vehicle?"

HaHa! Great replies! I'm going to replace all the heater and radiator hoses along with a new harmonic balancer and adjust the timing this weekend. Wish me luck! I guess I'll be making a trip to the emergency room. :smile:

How could I identify L35 heads by casting numbers or other identifible features?

Thanks! I'm going go at it again this weekend.

I have two different distributor wrenches and I can't reach the bolt to loosen it for adjustment. Anyone have experiances with a specific wrench(and procedure) that I can use to get to this bolt? Thanks.

Over the weekend I did plugs, wires and cap/rotor. I also installed rubber hoses to replace the metal IC lines. Installed and adjustable fuel psi regulator and a Spal fan in the lower heat exchanger. The total count of cuts on my hands number twelve with two being deep bleeders. OUCH! I really...

Thanks Kris. I will be upping the boost to 18psi this year and I'll definitely be trying the lock-up mod.