My Engine specs...please help!
08-11-2005, 09:58 PM
#81
Advanced PassionFord User
Originally Posted by Hooligan
Right, I had a Nissan Sunny GTI-R for about a month some 2 years ago...
It was supposed to be a group N rallycar but I guess with a proper group A shell, big AP brakes, Proflex group A suspension and a very illegal engine it was what we call a mini-group A car...
The engine was a full group a engine with silly cams, God knows what compression and a restrictor on the turbo.
It would FUCK OFF at an alarming rate untill you hit 5-5500 rpm and it's like hitting a brick wall
The way it catapults out of corners from on 2000 rpm defies belief but you are forever changing gears...I used to love hammering it around town wich is fun as you have loads and loads of corners and jumps (some people refer to them as speedbumps) but it's thirst, constant need for fettling (the cams or followers needed some specific maintenance, can't remember) and the lack of top end killed it for me. On the motorway you'd be in top and topspeed in a second and next thing you know is you're droning away whilst every mondeo passes you...
Oh, and it broke several gearboxes and diffs, had a whole case full of them in the garage wich were destroyed by the previous owner!
So I would advise against it and recommend a nice 400-400 engine with shorter final drive for more resonsive feel (less laggy) and proper accelleration!
Oh dear...a sensible response to a post by Phil from me...what is the world coming to???
It was supposed to be a group N rallycar but I guess with a proper group A shell, big AP brakes, Proflex group A suspension and a very illegal engine it was what we call a mini-group A car...
The engine was a full group a engine with silly cams, God knows what compression and a restrictor on the turbo.
It would FUCK OFF at an alarming rate untill you hit 5-5500 rpm and it's like hitting a brick wall
The way it catapults out of corners from on 2000 rpm defies belief but you are forever changing gears...I used to love hammering it around town wich is fun as you have loads and loads of corners and jumps (some people refer to them as speedbumps) but it's thirst, constant need for fettling (the cams or followers needed some specific maintenance, can't remember) and the lack of top end killed it for me. On the motorway you'd be in top and topspeed in a second and next thing you know is you're droning away whilst every mondeo passes you...Oh, and it broke several gearboxes and diffs, had a whole case full of them in the garage wich were destroyed by the previous owner!
So I would advise against it and recommend a nice 400-400 engine with shorter final drive for more resonsive feel (less laggy) and proper accelleration!
Oh dear...a sensible response to a post by Phil from me...what is the world coming to???
08-11-2005, 10:01 PM
#82
Originally Posted by pee vee
lol.
so what are these DOHC diffs good for then?
would the rear one be any good if it was coupled with the
transfer box mods?
martin-reyland aimed at you mainly lol
so what are these DOHC diffs good for then?
would the rear one be any good if it was coupled with the
transfer box mods?
martin-reyland aimed at you mainly lol 
08-11-2005, 10:04 PM
#84
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Originally Posted by martin-reyland
yes that would be ok but in an ideal world you would use the rear 3.9cwp in an uprated diff. as far as i can remember when fitting the chain and smaller diameter gears in the transfer box you will have a bit of grinding to do as the chain catches some raised area's of the alloy casing, not a big deal but worth mentioning all the same. you can have your existing chain shortened if it's in good order.
learning all the time!sounds like a mod i'd like for my car, to make it suit my taste a bit
better!
08-11-2005, 10:05 PM
#85
Originally Posted by RichardPON
If you run a small diff cooler, I presume it wouldn't require any kind of pump, and that the oil would circulate through the motion of the diff?
09-11-2005, 11:30 AM
#90
Originally Posted by martin-reyland
Originally Posted by a.k.a
Originally Posted by martin-reyland
Originally Posted by a.k.a
An alternative to changing the step offs in the box is to use the front 3.9 diff from a 2 litre DOHC 4x4
As long as you match the diffs front and rear you dont need to touch the box
People say its not a strong front diff but then again neither is the 3.6 cosworth version
As long as you match the diffs front and rear you dont need to touch the box
People say its not a strong front diff but then again neither is the 3.6 cosworth version
edited
meant to also say a lot of the problems are caused when people do not use the 2 proper extra mounting brackets that only came with the cosworth front diff when they use the 3.9 front diff which then allows the casing to flex and crack
A lot of people read these threads and many of them pick up advice related to the topic even if there own vehicles may not be to the same spec - not everyone has a bottomless pit budget and some may have wanted to go the 3.9 route without having to spend big bucks, as they dont have big hp engines which need the stronger set ups.
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