Recent content by S351 R

yeah that's what Im figuring unless someone else has experienced this and it was ignition/computer signal related. I knew that the clutch was a gamble - hate this may be sign that its not gonna make it... This is on Nitto NT-01s with 478rwhp/488rwtq. Guess slicks arent going to improve...

Running 11 fields at 15 frames per second. I could go higher resolution or RPM HR, but there is still the issue of the up-down-up zigs associated with the RPM that has me concerned. Since this log is much rougher under a full drag run vice dyno, my guess is that it is more mechanical, but...

Took new setup to track yesterday (427W NA) and data logs show the RPM line to be vary jagged by as much as 300 RPMs between frames as it climbs at WOT in 3rd & 4th. 4th was smooth enough while on the dyno. Is this simply the result of drivetrain, suspension, and tires 'squirming' under...

Classic. Thanks Cal

Working on driveability with a large cammed 427. I grasp most of the tuning principles as Ive gotten my other two comobs worked out but this big cam and big motor is a different beast. Biggest issues are bucking/hesitating on throttle inputs. And, some really bad "trailer hitching" in...

Looks like I got it to idle ok at about 1000-1100, in open loop at about 13.5 with 24 degrees of timing. It liked the lower timing down from 30-36 everywhere else. I shakes like a cammed motor would but seems stable enough and recovers fine from throttle blips. Now to post another thread...

I did at first when it was on the engine dyno but abandoned it once I got SD to work for the dyno. Surely I don't need AlphaN with at least 10" of vacuum, right? One interesting thing is that after turning off engine and reconnecting and reading a dashboard, Actual A/F is still reading...

Got a 427 sbf with large hyd roller (242/254@.050, 585/585 112LS). Running FAST Classic. I can get it to idle at about 1250 but slightest closure of TB blade sends it hunting badly. A rough idle is fine, just dont want the 300 rpm up/down with borderline stall Pls clue me in on best...

thanks gents, I'm with ya on how all the valve train needs to be up to the task. Would not expect issues from new setup starting as early as 5k though. As for ignition - dont know how to trouble shoot that one. Engine dyno was run off of Yellow top battery with 12.2 steady. FAST, TFI and...

Vavle springs should have been fine. Matched to cam with 160 seat / 410 open. Ramps shouldn't be too harsh - 293/307 @ .006 and 242/254 @ .050. and 585/585 lift Would the corresponding bounce in RPM in the same area be fine too? More a matter of the sensitivity of the logging sensor? Thx

Reviewing some data logs for n/a SBF 427 with FAST Classic. From 5k rpm up the lines for kpa/vacuum are zig zagged thru 6k rpm shutdown. RPM likewise zigs that last 1000 rpms. It is very pronounced and eratic when overlayed in the VE table playback. This was on a DTS engine dyno. The...

Injectors are 42#ers with roughly same pressure as beforewith old combo. MAP sensor has +- 10" of vacuum line, same intake, just new motor. My originating file before modifying it came from my other car that had 72# injectors, and based off of my recent issues with corrupt file, I suspect...

Ok, reloaded software and started from scartch from an untainted file and all is well. Guess the windows stuff can get corrupted. When in doubt - reload and start fresh I guess... Thanks for the

Got off dyno recently with SBF 427W with good parts that put down 540tq@4700 and 532hp@5700. Wished it would have carried pk power higher and further but very strong until running out of steam. Big question is why are my WOT VE Table #'s 65-80 (at pk tq)? Is this anything to be concerned...

norbs, This is the internal FAST b2b logger, using version 1.02 disc (which is still same as what is offered online for download I think) I wont be able to check this again until Thursday, but will try reloading software again, (clearing EVERYTHING ccom related), connect to the "running...