Why shoudl my '93 FZE be more gutless than the 96/97 cars ?

Discussion in '80-Series Tech' started by jlbuk, Feb 21, 2009.

  1. jlbuk

    jlbuk

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    As above really... the 93 drives fine, but when switching between the cars, you really notice it - feels like 20% difference !

    Details.
    I drive like a granny, rev counter generally below 2000, occasionally 2,500 when I'm really going for it ;)

    Both cars stock, except the 93 has slightly smaller tyres (which should help it) 265/70 as opposed to 275s, both auto.

    Also the '93 is dual fuel (petrol / LPG), which means there is a slight intake restriction, but that really isn't going to have any effect at the revs we're talking about here. Performance is the same on either fuel, which I guess rules out the injectors / fuel supply.

    93 has had new plugs / rotor, guess I should check the leads.
    93 has no brake problems / rubbing or any such.
    93 has no codes, although it did once throw a 25/26 when I floored it after a misjudgment, and got up to 3,500 rpm - probably scared it !

    Both cars have exactly the same fluids, both around 125k miles

    Bascially, I want to make sure there are no good reasons for the performance difference before trying to find the problem... if I hadn't the opportunity to drive the cars side-by-side, I would never have imagined the '93 had any kind of problem.

    I know the gearboxes are different but this doesn't seem quite right !

    Thanks in advance - JB
     
  2. Highspeed

    Highspeed

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    My 93 was super gutless and then blew the HG. After milling the head and replacing PHH and the new HG I have about 20% more power. Might want to check your compression...
     
  3. jlbuk

    jlbuk

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    Not exactly what I wanted to hear, but thanks...
     
  4. Highspeed

    Highspeed

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    ya, sorry man. the good news is that it might be nothing right? :cheers:
     
  5. tblume

    tblume

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    nothing to add, hope it's nothing.
    but?? why is the US spec computer an upgrade to your JDM truck?

    oh, and also, highspeed is an arrogant bastard. :flipoff2:

    (no offense, good taste in beer)
     
  6. Highspeed

    Highspeed

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  7. jlbuk

    jlbuk

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    hehe, all good info ;)

    Ref the computer, it's not the fact that it's from the US per se, it's just an upgrade from the older (hestation / ECM communication error ridden) factory one to the newer one that is known to solve the problems - which it did. I just thought it noteworthy that I couldn't find one (after looking for months) in the UK, so I had to get one from a boneyard in the US !!

    Cheers all - JB
     
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