Sports Cars Team

[D.O.G.]

Originally Posted by MGB=MPG

that torque curve is very flat, gets a plateau and hold it pretty even..
i think you could be OK to economy cruise at 1600-1700 RPM , but with a strong head wind or a Hill it would be downshift time.

I suspect you're right, I think 1680rpm is a bit too far down the torque curve, especially when you consider my normal commute has me climbing 600m on the way home.
But, having said that, because the 3.54 is already in the car (and those things are heavy), I'll give it a try at first.
At least I know third gear handles that climb OK and I can still change to the 3.9 after a month or two.

[UltArc]

Gear swaps are way out of my league, but if I were doing it for myself, I would probably use the taller gear, since at 29-34 mph uphill I am more efficient in 5th than 6th. So the new gear would be great otherwise, and I'd still be using my fifth for that anyways. Thats my view, O don't know of it helps any.

Sorry for causing any drama! It can be difficult to communicate just over text, and I don't think anyone ment to bother or insult anyone. I think a few of us were discussing different topics lol, and we were all on different pages.

[MGB=MPG]

thats on ZED.. ? you are getting the new shift box and may or may not change the diff. currently the long legged diff is in it ?
do what takes the least work and try those long legs .
if i understand right the hill climb wants a downshift anyway
i see that machine has a vacuum gauge.
keep an eye on it as i said i try to keep a manifold pressure that will wind in all the dizzy vacuum advance , on my thing ..stock.. it starts at 3 and ends at 12 . INHG but i have a custom curve dizzy in there and do not know what it is.
i have the idea that the more advance that is wound in the better the FE should be

on a different subject . i think i will take a drive today , as you may or may not know i have a big Duct on my chin fin that feeds the induction. . i did a DIY manometer to measure the overpressure , gonna measure a series of test points , with and with out a prefilter.

the theoretical over pressures in clean air at 55 MPH is 1 inch water, at 78 Mph 2 inches water

my first try i saw 2 inches at 55 MPH. .. way above the expected value
i wonder if i should put a string up here about the readings .
and should it be in the general forum in its own string or here ?

[MGB=MPG]

i just ran some measurements today on my ram induction

i have a NA 110CID old school gasser with a ram air down on the deck
2 in pipe feeding to an air box in front of a Skinners Union Carb

my ambient temps were about 100F on the intake

my test points were out side the pipe at the funnel and inside the pipe
with and with out a pre filter..

on the test point outside the pipe i saw
1 inch water at 40MPH
2 inH20 at 50
2.5 inh20 at 55
3 inh20 at 60
3.5 inh20 at 65

then i moved the sampling point inside the pipe

i saw i inch H20@40
1.5 in H20 @ 55
2 inh2o at 60..

then i put the prefilter on
saw
1 INH2O @40
1.5 INH2o@50
2 INH20@60

as i was going along with the sample tube in the pipe i became aware that it made a BIG difference if i was in neutral throttle or trailing throttle

i mean what throttle setting i had . i became aware that as my manifold pressure went down ..so did the over pressure in the pipe

at WOT 0 INHG manifold i was pulling vacuum in the pipe [ level not noted maybe 2-3 inh2o]

at my cruise setting of 15 INHG manifold i was showing

1.5 inH20 Over pressure in the pipe

i noticed at 55-60 mPH cruise AND 15 INhg MANIFOLD I WAS SHOWING 1.5 INh20 oVER PRESSURE
ON A HILL CLIMB 5% grade 40 mph top gear 10 inhg showing 1/2 in H2O over pressure

finding that throttle setting and the resultant manifold pressure transfers directly in to the induction pipe near the inlet makes my test series much more complex..
i need a data logger .. in my vintage vehicle a data logger is a rider with a stubby pencil
..
of some interest ..when the sampling pipe was Outside the pipe , i noticed i could detect overpressure increase Bow waves off of oncoming traffic and over pressure reduction when i entered the draft following a vehicle
[slipstream]

this test sequence is much more complex than i had counted on

.... next i intend to move sampling point to the air box ahead of the filter
try to record ..
speed . manifold pressure and measured pressures
then after the filter in the air box

INTUITIVELY .. i perceive this manometer very useful ..
as long as i can read an induction pressure Positive , i think i am in the increase FE zone

what do you think
who can plan a proper test sequence for me ?

my final config will be with a sensor pipe after the filter in the air box and a nice little u-tube manometer on the panel [yet to be fabricated]

i expect to see the same kind of values before the filter . hard to know what i will sample after the filter..

comments ..remarks .. suggestions?

[UltArc]

So what is everyone doing for the coming winter with their eco rides? Hiding them, modding, another alternative I didn't think of?

[Sporty Modder]

Mine is getting a newer 16v dohc motor, to replace the broken 8v motor.
The truck I am taking it out of is rated for the same mpgs as my car, I should see a mpg increase with the mod.

[turbovr41991]

Originally Posted by Sporty Modder

Mine is getting a newer 16v dohc motor, to replace the broken 8v motor.

Not doing the 4AGE 20V swap??? I thought that was a popular swap in those cars.

[Sporty Modder]

No putting a 2rz motor in it out of a 98 taco. Mild hp and tq jump30% same weight and displacement. I love the tq the 22re has and want to keep the same charicteristics(spelling) the 2rz trans plant is almost a drop in too. Plus parts are avalible in any parts house in the US, it might be a bit harder to find parts for the black top jdm motor you describe.

[turbovr41991]

Parts are getting easier and easier to get for the Black top or silver top. The 4AGE or MR2 forums do a good job of having alt part numbers that work on other cars. Alof of 97 Camry parts interhange with them.

In any case, good luck with the swap. That 2.4 Tacoma engine is pretty solid as well. I have had it and its larger 2.7 version in my tacomas and had no issues wiht either.

[vrmilionzx]

And to think - some people like to tease people who keep the KA in their 240's about it being a truck motor.

I love the torque too! Something about those 2.4's......