Hi list,
i just got a 4 speed gearbox.the ratio's are as follows,
1st 3.38 : 1
2nd 2.00 : 1
3rd 1.31 : 1
4th 1 : 1
and what i have now is
1st 3.57:1
2nd 2.24:1
3rd 1.41:1
4th 1:1
is anyone here is a gearbox expert who can help me.i run a 4.1 locked diff with
175/13 tyres.
Mohit.
-----Original Message-----
From: Mohit K. Autar
Sent: Monday, September 06, 2004 8:16 AM
To: '[EMAIL PROTECTED]'
Subject: RE: weber jets...
Hi there,
well i fitted the twin 40mm webers in my datsun but it not running right.on idle its
missing which is very hard to tune but after 3000 revs it starts to get normal and it
has good response upto 6500 rev.
the other thing is,im losing power but this is not for the carbs but the engine is
giving up.i have to overhaul it soon.
one thing i have to know.since i made the manifold at home.the webers are slightly
tilt when you look from the front of the car.
do i have to get it level.
Cheers
Mohit.
-----Original Message-----
From: Errol Smith [mailto:[EMAIL PROTECTED]
Sent: Saturday, September 04, 2004 1:19 AM
To: [EMAIL PROTECTED]
Subject: RE: weber jets...
I can disagree and will very strongly.
I think a lot of time dyno operators produce a result you want. More
often the decision to buy a dyno is seen as a licence to print money.
The people that run it have no ability how to use the equipment at even
25% of its capacity for diagnostic purposes or do not care. The prime
purpose seems to be to relieve you of large amounts of money for no gain
or very small increases in performance.
The bill for "dyno time" often represents about 5 - 8 times the actual
amount of time the dyno was used. A lot of work that should be done else
where is done "on the dyno" (parked of course) and you end up paying
exorbitant rates for a costly work bench :-)
As for results, "The result you want is often achieved by no more than a
change of the air temp correction data or a change of wheel diameter"
until a suitable "ego massaging" positive result is obtained, regardless
of how driveable the machine is.
There are a few who know how to use them and are conscientious. The
prices for their work seem to be a lot less than the high flyers and
often after 5 minutes they will take the car of the dyno and send it for
further work so the dyno time is very small.
Some of the self promoting experts charge Tattslotto number for results
that could be achieved by a 3 year apprentice with a 20 year old vane
tune up scope.
As for tuning webers, if you have been doing for 30+ years you should be
able to pick the setup to use on a car easil within a jet size or two,
have it run and be driveable immediately. Later have it dyno'ed to fine
tune mixtures with only a small amount of dyno time.
When you see people getting a bill for 3 days of dyno time to set up an
ECU, you have to wonder about the person using the gear. Did they get
past first year apprentice engine tuning 101 :-0
Aaaaaahhh, that feels better. This is aimed at incompetent dyno tuners
who rip off Datto owners where ever they may be. There are a lot of them
who's bills should make them ashamed of claiming they are engine tuners.
When you see a professional on good equipment, you realise how bad some
dyno "experts" are.
I am tired and going to bed. Night all,
Feral Errol
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