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how hard can a ef/el 6 rev 

 

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 Post subject: how hard can a ef/el 6 rev
Posted: Sat Aug 18, 2007 12:37 pm 
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how hard can a ef/el 6 rev without breaking something
and what can be done to make them rev further
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Posted: Sat Aug 18, 2007 1:12 pm 
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Posted: Sat Aug 18, 2007 1:16 pm 
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what would need to be done
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Posted: Sat Aug 18, 2007 2:25 pm 
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michael1045 wrote:
what would need to be done


how far do you want to rev it?
and why?
With boost they'll make loads of power with out going past the factory redline.

 

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Posted: Sat Aug 18, 2007 2:34 pm 
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man past 5k they stop pulling hard, ud want some decent work done to want to push it past 5,5...
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Posted: Sat Aug 18, 2007 3:18 pm 
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just wanted to know what would have to be done to the motor
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Posted: Sat Aug 18, 2007 3:28 pm 
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lol the 4.0 i6 is a small scale truck motor (with obvious tech differences), its not designed to rev. its designed for low down torque. If you want revs get a v6/v8. There is just too much piston mass for the length of the crankshaft for High rpm to be feasable.

 

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Posted: Sat Aug 18, 2007 4:28 pm 
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i allways reved my'n out to 6000 flat never had a dramer that was a stock moter with no limiter .. it did advenraly melt a piston and break a few rods and snap the cam but that was because off ecu malfuntoin (leaning out) and mabee lack off oil changes... but it used to pull them revs for 3 to 4 min at a time every weekend wasting tires for about a 1yr with 365555k's on it
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Posted: Sat Aug 18, 2007 4:38 pm 
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spaz ef wrote:
i allways reved my'n out to 6000 flat never had a dramer that was a stock moter with no limiter .. it did advenraly melt a piston and break a few rods and snap the cam but that was because off ecu malfuntoin (leaning out) and mabee lack off oil changes... but it used to pull them revs for 3 to 4 min at a time every weekend wasting tires for about a 1yr with 365555k's on it


6000rpm for 3-4 minutes at a time? I don't think your ECU malfunctioned, it would have committed suicide!

 

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Posted: Sat Aug 18, 2007 4:47 pm 
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lol it was'nt that bad temp is more the concern moter gets a bit warm but iv reved all my i6 hard and never had a prob
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Posted: Sat Aug 18, 2007 4:53 pm 
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5600-5700 is the max for mine, im not a fan of taking it to redline

 

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Posted: Sat Aug 18, 2007 5:12 pm 
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na niether am i normaly but it was only a $1500 work car just testing it really just to see how much they can take and i was very surprised they are a bloody good moter..
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Posted: Sat Aug 18, 2007 5:33 pm 
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I take my BA to its rpm cutout averaging once or twice a week (never when the engine is cold). Still runs as good as when I first got it.

 

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Posted: Sat Aug 18, 2007 8:14 pm 
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6000 to 6500 is ok NA. My EF is smooth and still pulling hard at 6k (mov here)

For boosted engine there are lots of variables that come into play but you really dont need to spin them up anyway. I'd say in any case you would want to keep it <6500 for a modified bottom end and <6000 for a stock bottom end.

 

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 Post subject: Re: how hard can a ef/el 6 rev
Posted: Sat Aug 18, 2007 8:40 pm 
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michael1045 wrote:
how hard can a ef/el 6 rev without breaking something
and what can be done to make them rev further


Best to check at what RPM the tailshaft is rated at particularly if you like your Tacho needle to visit 6000 RPM or more.

Aluminium tailshafts can fold and break, get it balanced and checked for alignment or change to an ED steel tailshaft if they fit, they are supposed to be good for 6500 RPM

 

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