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4.0l lifespan
Posted: Wed May 16, 2007 7:05 pm
by known 2
whats the lifespan of the 4.0l six
Re: 4.0l lifespan
Posted: Wed May 16, 2007 8:37 pm
by Gonzo
known 2 wrote:whats the lifespan of the 4.0l six
Longer than all the other components in the car!
They are an old school, bombproof motor (mostly).
500 000 is not unheard of.
Posted: Thu May 17, 2007 11:18 am
by Wooders
Just killed our XJ 4.0L with only 135,000 on the clock.....but it had been fairly abused and I'd basically cooked the engine twice and now the piston skirts have gone in #4 cylinder....
But a replacement engine wasn't that expensive (will be fitting it this weekend) and then I plan to rebuild the old engine bored & stroked
Don't let my expeience put you off - overall thy are a solid an reliable donk.
Posted: Thu May 17, 2007 5:25 pm
by known 2
what can be done to them to improve power. has anyone turbo'd them in or is a 4.7 v8 a better option if u want power.
Posted: Thu May 17, 2007 8:15 pm
by Steve F
Best option is to stroke them, take it out to 4.6lt and it'll still look stock, no problems with rego etc. Plenty of power as well. Golen in the US quote 260hp for thier stroker, 190hp is stock.
Cheers
Steve
Posted: Fri May 18, 2007 11:29 pm
by franco
i agree with steve, stroker kits are avail in the US...you ca even supercharge them too
Posted: Fri May 18, 2007 11:39 pm
by tjm_tj
mmmm... i'm saving for a stroker kit
Posted: Sat May 19, 2007 11:57 am
by known 2
sweet.
how does the drivline handle abuse running 35's. are breaking uni's a problem in the steering?
Posted: Sat May 19, 2007 7:33 pm
by stu
yes and yes, your steering rod ends will flog out a little quicker, your power steering pump will flog out a little quicker and your uni's will flog out a little quicker. i also have had the problem of the extra weight doing a little damage to the CA brackets.