Twin-turbo ls1 problems NEED HELP (bs3 logs inside)
05-11-2006, 04:32 PM
#41
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It was a problem involving the stock crank sensor. Once I try the new fix, I'll report back but John is 100% that was the problem and is 100% this is the solution. And I'm not going to argue with him! lol
05-11-2006, 05:40 PM
#44
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Originally Posted by LTLHOMER
It was a problem involving the stock crank sensor. Once I try the new fix, I'll report back but John is 100% that was the problem and is 100% this is the solution. And I'm not going to argue with him! lol
05-11-2006, 05:47 PM
#45
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Originally Posted by redvictor
i told you so a while back eh.........glad you've found the problem...
But you were right...and that's hard to admit since you're a Brit and all.
Originally Posted by Boostaholic
Thats good news, injectors are still on the way though
05-12-2006, 07:56 AM
#49
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Didn't you say a while back that you replaced the crank sensor and it didn't change anything?
Good to hear you've got it figured out! Would have been a shame to sell it.
Good to hear you've got it figured out! Would have been a shame to sell it.
05-12-2006, 11:53 AM
#51
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Has nothing to do with the sensor wheel itself or getting a new sensor from what I understand in talking to Sean. For some reason the signal strength is going away in upper RPM's.
Since the crank sensor wheel was never removed from the crank (it came out of my original 382 solid roller motor), there wasn't anything that should have changed as far as the signal goes. For whatever reason though it isn't seeing it above that magic RPM and hence it falls on its ***. I already talked to Sean previously about a crank trigger to test out. It seems that John Meaney has already created a crank trigger of his own, so he knows something is up with the sensitivity of it in some cases and has a quick fix for it. Hopefully it works out and Sean can get it all up and running soon.
Since the crank sensor wheel was never removed from the crank (it came out of my original 382 solid roller motor), there wasn't anything that should have changed as far as the signal goes. For whatever reason though it isn't seeing it above that magic RPM and hence it falls on its ***. I already talked to Sean previously about a crank trigger to test out. It seems that John Meaney has already created a crank trigger of his own, so he knows something is up with the sensitivity of it in some cases and has a quick fix for it. Hopefully it works out and Sean can get it all up and running soon.
05-12-2006, 12:44 PM
#52
i guess what i was getting to is that the same crank wheel and sensor worked perfectly fine with the stock computer as you say.. so it must be something with how sensitive the bs3 is to a proper crank wheel allignment or sensor proximity etc.
there was another guy who had crank sensor problems until he machined the mounting surface down and moved the sensor closer to the reluctor at which point the problem also dissappeared.
there was another guy who had crank sensor problems until he machined the mounting surface down and moved the sensor closer to the reluctor at which point the problem also dissappeared.
05-12-2006, 02:06 PM
#54
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John said this was the first time he's seen a crank signal just go away on the ls1 stuff (other examples he mentioned all had to do with assembly problems such as too much crank endplay and the reluctor wheel itself getting somehow installed wrong or tweaked but even then they still didn't just disappear from what I understood). He probably could have had me take apart the motor, and confirm that something was amiss, but weighing the cost to fix the problem (simple crank trigger setup) vs pulling the motor apart the best solution was quite easy to see.
Big stuff will work fine with the stock crank. My car was an isolated incident which was probably due to the wheel on the crank being somehow tweaked in the build process. All it would take was it falling over and getting moved a tiny bit to cause a problem at that high of an rpm. If this was a typical LS1, spinning to <6700, we would never know the problem existed.
Any aftermarket ECU is going to read the stock reluctor wheel the same way, so it's not really fair to say bs3 might not be the best for it because it works identical in that regards to FAST, ACCEL, etc, but it also has a hell of a lot more feautures.
Hope that helps. I'm sure that even if I pulled the motor apart, and found the crank wheel to be tweaked, there would be little anyone could do because who's to say I didn't knock the crank over myself, or a friend while it was in my garage, and it could have been doomed from then on.
Big stuff will work fine with the stock crank. My car was an isolated incident which was probably due to the wheel on the crank being somehow tweaked in the build process. All it would take was it falling over and getting moved a tiny bit to cause a problem at that high of an rpm. If this was a typical LS1, spinning to <6700, we would never know the problem existed.
Any aftermarket ECU is going to read the stock reluctor wheel the same way, so it's not really fair to say bs3 might not be the best for it because it works identical in that regards to FAST, ACCEL, etc, but it also has a hell of a lot more feautures.
Hope that helps. I'm sure that even if I pulled the motor apart, and found the crank wheel to be tweaked, there would be little anyone could do because who's to say I didn't knock the crank over myself, or a friend while it was in my garage, and it could have been doomed from then on.
05-12-2006, 02:08 PM
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Originally Posted by Birdie2000
Didn't you say a while back that you replaced the crank sensor and it didn't change anything?
Good to hear you've got it figured out! Would have been a shame to sell it.
Good to hear you've got it figured out! Would have been a shame to sell it.
05-12-2006, 02:11 PM
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Originally Posted by z28draco
was wondering why i didnt get that phone call...lol
05-12-2006, 02:51 PM
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Originally Posted by LTLHOMER
But you were right...and that's hard to admit since you're a Brit and all.
Just glad you found your trouble before you sold it all.....
05-13-2006, 07:05 PM
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Hard stuff is done thanks to my buddy Pat. He designed the bracket, made it on his cnc mill, and put it on for me. Definitly mad skills. Will be up and running good by next weekend.
