bergenfelter Posted January 12, 2013 Report Share Posted January 12, 2013 I have a few mods going in to my '13 - 2.4" VMP Pulley, 90mm idler, 65mm CobraJet TB, air intake and a Lund Racing 93 octane tune. One of the things that I question is with the Lund tune they raise the rev limiter from 7000 to 7600. Can the 5.8 mill handle 7600 RPM for short bursts? I am assuming it can or Lund would not have raised the limiter that far. Link to comment Share on other sites More sharing options...
svt13 Posted January 12, 2013 Report Share Posted January 12, 2013 If it could I am sure ford would have raised it to 7600 from the start. It barely can sustain 7000 I would think 7600 is nuts. Thats how lethal finally broke their engine because they reved past 7k. To sustain 7600 you would need the MMR titanium retainers which safely raise up the rev limiter and also true forged manley or carillo rods. I question everything that is John Lund. IMO he rushed everything he did to be the first. Link to comment Share on other sites More sharing options...
bergenfelter Posted January 12, 2013 Author Report Share Posted January 12, 2013 If it could I am sure ford would have raised it to 7600 from the start. It barely can sustain 7000 I would think 7600 is nuts. Thats how lethal finally broke their engine because they reved past 7k. To sustain 7600 you would need the MMR titanium retainers which safely raise up the rev limiter and also true forged manley or carillo rods. I question everything that is John Lund. IMO he rushed everything he did to be the first. OK - any links to the story on the blown Lethal engine - any other tunes out there that would be better? Link to comment Share on other sites More sharing options...
mullens Posted January 12, 2013 Report Share Posted January 12, 2013 4.16" stroke X 7600 RPM=5276 FPM piston speed.That's Nascar territory. Engine will go boom with stock internals. Don't do it. I have no idea why Lund would raise the limiter to that level. Even if you don't do it intentionally and miss a shift, still a good chance of catastrophic failure. Link to comment Share on other sites More sharing options...
Iceman5000 Posted January 12, 2013 Report Share Posted January 12, 2013 I have a Lund tune, my rev limiter is still 7000. No way I would go past that with the stock rods. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted January 12, 2013 Report Share Posted January 12, 2013 I have a Lund tune, my rev limiter is still 7000. No way I would go past that with the stock rods. Do you have a 5.4L or a 5.8L? There's a BIG difference between the two, internally. Phill Link to comment Share on other sites More sharing options...
bergenfelter Posted January 12, 2013 Author Report Share Posted January 12, 2013 Do you have a 5.4L or a 5.8L? There's a BIG difference between the two, internally. Phill Phill - it is a 2013 5.8L Trinity. Link to comment Share on other sites More sharing options...
bergenfelter Posted January 12, 2013 Author Report Share Posted January 12, 2013 I have a Lund tune, my rev limiter is still 7000. No way I would go past that with the stock rods. Jon II told me it was raised to 7600 - it came with their canned 93 Octane tune on the SCT tuner. Link to comment Share on other sites More sharing options...
mullens Posted January 12, 2013 Report Share Posted January 12, 2013 Is there an option on your SCT to lower it? If so I'd bring it back to 7k. Link to comment Share on other sites More sharing options...
svtkeith Posted January 12, 2013 Report Share Posted January 12, 2013 OK - any links to the story on the blown Lethal engine - any other tunes out there that would be better? VMP tunning. JDM engineering. Steeda. Evolution performance. Link to comment Share on other sites More sharing options...
0201212 Posted January 12, 2013 Report Share Posted January 12, 2013 VMP!!! One of the best tuners IMO! Link to comment Share on other sites More sharing options...
svtkeith Posted January 12, 2013 Report Share Posted January 12, 2013 Phill - it is a 2013 5.8L Trinity. I agree would never rev that eng to 7600..thats looking for trouble IMO. Link to comment Share on other sites More sharing options...
Iceman5000 Posted January 12, 2013 Report Share Posted January 12, 2013 Mine is a 2013 5.8. Canned tune from Lund. 7000 RPM limit. I haven't checked the SCT to see if it can be changed. I have been running it since July ~4000 miles. No issues whatsoever. Link to comment Share on other sites More sharing options...
bergenfelter Posted January 12, 2013 Author Report Share Posted January 12, 2013 Mine is a 2013 5.8. Canned tune from Lund. 7000 RPM limit. I haven't checked the SCT to see if it can be changed. I have been running it since July ~4000 miles. No issues whatsoever. Sounds like Jon II is not dialed in with the program - I will verify - Is there any way to look at this on the SCT? Link to comment Share on other sites More sharing options...
rdrawkit Posted January 13, 2013 Report Share Posted January 13, 2013 Iceman...With 4000 miles on her....How many times up at 7000 rpm???? Link to comment Share on other sites More sharing options...
Iceman5000 Posted January 13, 2013 Report Share Posted January 13, 2013 Iceman...With 4000 miles on her....How many times up at 7000 rpm???? 50 or so. Link to comment Share on other sites More sharing options...
svt13 Posted January 13, 2013 Report Share Posted January 13, 2013 OK - any links to the story on the blown Lethal engine - any other tunes out there that would be better? They said it on a post on SVTP. That they were reving the car constantly past 7k RPM and finally a rod broke. Ford put the limited time there for a reason. Link to comment Share on other sites More sharing options...
bergenfelter Posted January 14, 2013 Author Report Share Posted January 14, 2013 They said it on a post on SVTP. That they were reving the car constantly past 7k RPM and finally a rod broke. Ford put the limited time there for a reason. Do you have the link? Link to comment Share on other sites More sharing options...
Iceman5000 Posted January 14, 2013 Report Share Posted January 14, 2013 It wasn't Lethal. It was Evolution. svt13 was partially right as usual, LOL. Here is the link. Post #185 http://www.svtperformance.com/forums/2013-shelby-gt500-413/866989-evolution-gt500-goes-boom-8.html Link to comment Share on other sites More sharing options...
bergenfelter Posted January 14, 2013 Author Report Share Posted January 14, 2013 It wasn't Lethal. It was Evolution. svt13 was partially right as usual, LOL. Here is the link. Post #185 http://www.svtperformance.com/forums/2013-shelby-gt500-413/866989-evolution-gt500-goes-boom-8.html Iceman - Gracias - I sent a note to Lund to have them adjust my tune to 7000 rev limit - I am still not so sure Jon II knows what is going on - I would bet my tune is set at 7K rev limit. Thanks for all the input from the forum. This is what it is all about... Link to comment Share on other sites More sharing options...
svt13 Posted January 14, 2013 Report Share Posted January 14, 2013 It wasn't Lethal. It was Evolution. svt13 was partially right as usual, LOL. Here is the link. Post #185 http://www.svtperfor...oes-boom-8.html My mistake. I confused them Link to comment Share on other sites More sharing options...
bergenfelter Posted January 17, 2013 Author Report Share Posted January 17, 2013 Talked to Jon Lund II and he told me they set the rev limiter at 7600 to "get it out of the way". That's fine for good drivers with perfect shift reaction times - I don't trust myself that much. Jon was more than happy to set the rev limiter back to 7000 and email me a new custom tune. Just received my 65mm Cobra Jet TB today - what a beautiful piece of work!! The size of those throttle bores looks like it could inhale a bowling ball. Link to comment Share on other sites More sharing options...
svt13 Posted January 17, 2013 Report Share Posted January 17, 2013 What does that even mean "get it out of the way"? Link to comment Share on other sites More sharing options...
Iceman5000 Posted January 17, 2013 Report Share Posted January 17, 2013 I believe it means move it up so you won't hit the rev limiter. But still shift before 7K. Its always better to not hit the rev limiter. Link to comment Share on other sites More sharing options...
svt13 Posted January 17, 2013 Report Share Posted January 17, 2013 I believe it means move it up so you won't hit the rev limiter. But still shift before 7K. Its always better to not hit the rev limiter. I see Link to comment Share on other sites More sharing options...
mullens Posted January 19, 2013 Report Share Posted January 19, 2013 I believe it means move it up so you won't hit the rev limiter. But still shift before 7K. Its always better to not hit the rev limiter. The rev limiter is your safety valve put there for one purpose- to save your engine. They want you to shift before 7k, but it's better to move that annoying limiter out of the way because you may make a mistake and hit it. Makes zero sense to me and says they're not to concerned about your engine. Link to comment Share on other sites More sharing options...
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