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post #1 of 5 (permalink) Old 03-21-03, 11:38 PM Thread Starter
EL XR6 - w00t
 
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Question Are XR6 Engines tougher?

Hey All,

I have a question - are XR6 engines designed and built 'tougher' than normal 4.0L engines?

I was thinking about it today, and since everyone would be rev'ing their XR's occasionally.. wouldn't they have made the engine parts more durable? I mean to pull 164kW at 5000 rpm, they'd have to anticipate people would be reving to get the power? Whats stopping the engine blowing up if every second day someone races another person off the lights or snaps second gear occasionally?

Cya!
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post #2 of 5 (permalink) Old 03-22-03, 03:36 AM
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Talking AUs I assume?

There isn't a great deal of difference between the standard 6 and the XR6 HP. Basically it's a better cam that creates the extra kWs. The VCT has this and a better exhaust to create 172kW.

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post #3 of 5 (permalink) Old 03-22-03, 07:30 PM Thread Starter
EL XR6 - w00t
 
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I was actually thinking EF/EL :) But I'm guessing AU would be pretty much the same
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post #4 of 5 (permalink) Old 03-22-03, 08:01 PM
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The mechanical strength of the engines are the same.
The only part of the engine which has increased strength are the valve springs. This is to cope with the extra lift cam.
The block, crank, pistons, rods, etc, are all the same.

Rick.
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post #5 of 5 (permalink) Old 03-24-03, 01:57 AM
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Quote:
Originally posted by dcliff1
I was actually thinking EF/EL :) But I'm guessing AU would be pretty much the same
Yep, same deal with the EF/EL

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