..How much boost were u running? 
Breakdown of a previously supercharged engine reveals.....
Breakdown of a previously supercharged engine reveals..... Been awhile since I've posted. Last year I had a D1SC kit on my LT1 t/a that I pieced together from a member on here. Pieced the kit together on a mean budget and it worked out great, had a few snags here and there but that was more attributed to me learning boost. I had the car tuned by Herter @ PCM4Less, we won't go into that though.
Long story short I ran the blower for 400-500 miles and life was pretty good, the tune was way off but it was still fun to drive. Took it to Pittsburgh raceway park and by the time I got it there it was in rather poor condition, seeing how it was the end of the season though I ran it anyways three times knowing full well I was building another motor for the car.
I got around to tearing down the block that was supercharged and was inspecting the pistons to see what I could use in a hotcam motor I'm gonna stick it in while I build something substantial.
Just some lol pics to look at.
Long story short I ran the blower for 400-500 miles and life was pretty good, the tune was way off but it was still fun to drive. Took it to Pittsburgh raceway park and by the time I got it there it was in rather poor condition, seeing how it was the end of the season though I ran it anyways three times knowing full well I was building another motor for the car.
I got around to tearing down the block that was supercharged and was inspecting the pistons to see what I could use in a hotcam motor I'm gonna stick it in while I build something substantial.
Just some lol pics to look at.
How much boost were you running?
I tried stock pistons and they won't take much boost and won't last if it detonates. I tune my own and would not consider running a boosted setup if I couldn't tune it
I tried stock pistons and they won't take much boost and won't last if it detonates. I tune my own and would not consider running a boosted setup if I couldn't tune it
In the summer time the car only ran about 7 psi at redline. It actually rarely saw boost since the tune was so far off it wasn't worth anything for more then three - four seconds sustained. Never saw the rev limiter or anything like that either when it was boosted. I took it to the track on a cold *** day after it hadn't been running for a week or so. I put the pinion gear out on my 4.10 set that's why she was down. The temperature dropped drastically and when I took it to the track it was running 13 psi at redline.
I ran it three times at Thompson Raceway, first run was 1/8 mile and I cant remember the time. Next two runs were 1/4 mile and it ran 13.0x. My car with bolt ons ran 13.38 at best so theoretically my 13 psi, fuel system, hotcam, upgraded springs, and tune gained me what.....50 hp haha.
My two 1/4 mile runs I was getting into 5th gear because the car was pulling timing so bad it wasnt making any power up top but when I came across the line it put the head gasket out in top fuel fashion. The second I let off the gas it went up in smoke under decel so I parked it and waited for the return trip home. Drove it 60+ miles home with those two bad pistons and a blown head gasket!
I ran it three times at Thompson Raceway, first run was 1/8 mile and I cant remember the time. Next two runs were 1/4 mile and it ran 13.0x. My car with bolt ons ran 13.38 at best so theoretically my 13 psi, fuel system, hotcam, upgraded springs, and tune gained me what.....50 hp haha.
My two 1/4 mile runs I was getting into 5th gear because the car was pulling timing so bad it wasnt making any power up top but when I came across the line it put the head gasket out in top fuel fashion. The second I let off the gas it went up in smoke under decel so I parked it and waited for the return trip home. Drove it 60+ miles home with those two bad pistons and a blown head gasket!
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And to those of you who are gonna argue that's WAY too much boost for a stock motor keep in mind by the time I got it to the track where it ran 13psi, it never saw more then 8. The damage was done well before I got there, the 13 psi just really helped tear stuff up in the end.
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Verdad Gallardo Did you have a wideband on it? It sounds to me that with the tune off it was running pretty lean and the rings got alot hotter then normal and they butted an pulled the ring lands off.
From the sound of it he never had it tuned well. But gave it hell anyway because he was building another motor and didn't care if he blew that one up...
The car only had a few hundred miles on it but it had the blower for weeks. I didn't get to drive it since it was such a hassle to drive, it wouldn't hold an idle, it wouldn't go wide open it wouldnt do anything like that. When I went to the track I was with a friend and we did mess with the tune up before I ran it.
I didn't wanna go into detail on tuning because it was a bad experience. I got my initial tune and put it on the car and it never ran. I datalogged it and sent about 10-12 e-mails back and forth and was told there was nothing wrong with it.
I did run a wideband and at WOT it ran about 11.2-11.7. It definitely wasn't lean. It was a learning experience we'll put it that way, instead of it being a learning experience for two people though I was just told it was fine and that I can pick up the bill essentially. Well I learned two things, boost is more complicated then my level of tuning knowledge, mail order tunes are a great way to get a baseline tune but aren't supported after the initial tune up.
I didn't wanna go into detail on tuning because it was a bad experience. I got my initial tune and put it on the car and it never ran. I datalogged it and sent about 10-12 e-mails back and forth and was told there was nothing wrong with it.
I did run a wideband and at WOT it ran about 11.2-11.7. It definitely wasn't lean. It was a learning experience we'll put it that way, instead of it being a learning experience for two people though I was just told it was fine and that I can pick up the bill essentially. Well I learned two things, boost is more complicated then my level of tuning knowledge, mail order tunes are a great way to get a baseline tune but aren't supported after the initial tune up.
The car only had a few hundred miles on it but it had the blower for weeks. I didn't get to drive it since it was such a hassle to drive, it wouldn't hold an idle, it wouldn't go wide open it wouldnt do anything like that. When I went to the track I was with a friend and we did mess with the tune up before I ran it.
I didn't wanna go into detail on tuning because it was a bad experience. I got my initial tune and put it on the car and it never ran. I datalogged it and sent about 10-12 e-mails back and forth and was told there was nothing wrong with it.
I did run a wideband and at WOT it ran about 11.2-11.7. It definitely wasn't lean. It was a learning experience we'll put it that way, instead of it being a learning experience for two people though I was just told it was fine and that I can pick up the bill essentially. Well I learned two things, boost is more complicated then my level of tuning knowledge, mail order tunes are a great way to get a baseline tune but aren't supported after the initial tune up.
I didn't wanna go into detail on tuning because it was a bad experience. I got my initial tune and put it on the car and it never ran. I datalogged it and sent about 10-12 e-mails back and forth and was told there was nothing wrong with it.
I did run a wideband and at WOT it ran about 11.2-11.7. It definitely wasn't lean. It was a learning experience we'll put it that way, instead of it being a learning experience for two people though I was just told it was fine and that I can pick up the bill essentially. Well I learned two things, boost is more complicated then my level of tuning knowledge, mail order tunes are a great way to get a baseline tune but aren't supported after the initial tune up.
Nice..scrap metal now..
I would find someone local and in person to tune your stuff..and make sure they are dependable aswell. I had a guy tune mine and when I needed to get ahold of him to fix some stuff he was no where to be found.
I would find someone local and in person to tune your stuff..and make sure they are dependable aswell. I had a guy tune mine and when I needed to get ahold of him to fix some stuff he was no where to be found.
Im not trying to throw anybody under the bus or bad talk anyone but if you could me I personally know more then three people who have had less then ideal experiences with the same gentleman that tuned my car. But yea, unless I can tune it myself it's going to be in person from now on. The LT pcm isn't the most ideal for tuning boost either it's a guessing game. I switched over, I'm building a forged 383 over the summer and already bought everything I need to run a 200 shot. Got a Mallory 685 to pull timing for my nitrous and a 12 bolt to come off the line. This was just last summers project but....I spent WAY more time wrenching then I did enjoying the car and that's not what I want this year.
I had boosted lt1's for over 4 years. I have had SC and still have two turbo setups with no problems. A boosted LT1 setup is not that hard to get right. I ve used Speed Density and MAF and make ~675 rwhp in my drag 377 so I disagree that the stock PCM can't cut it.
I do agree mail order is not the way to set up a boosted setup. BUT in their defense boosted tunes are NOT interchangeable and the tuners I have heard about tell you the tune is to get you to the dyno!
So it isn't fair to dwell on that part of it. I tune my own and I will tell you I tweak my tune whenever I go to the track. Would my car be hurt if I didnt tweak? No but I wouldn't get all out of it.
Good luck tuning your new setup
I do agree mail order is not the way to set up a boosted setup. BUT in their defense boosted tunes are NOT interchangeable and the tuners I have heard about tell you the tune is to get you to the dyno!
So it isn't fair to dwell on that part of it. I tune my own and I will tell you I tweak my tune whenever I go to the track. Would my car be hurt if I didnt tweak? No but I wouldn't get all out of it.
Good luck tuning your new setup
Oh I never said it wouldn't cut it, I said its not the most ideal since it doesn't actually see boost. It's kind of a guessing game above atmosphere. If I'm wrong though please correct me, that's why I paid somebody money to tune it though, because I dont know everything there is to know about it in the first place.
The luck however, I will take haha and is much appreciated.
The luck however, I will take haha and is much appreciated.
226, badringlands, bbc, breakdown, detonation, drive, engine, ls1, lt1, lt4, motor, piston, previously, supercharged, year
