2E tacho readings

[GDII]

I just installed a cheap after market tacho in my 1990 corolla 2E, just for fun. It reads 700rpm at idle, 1700rpm at 50kph in 4th gear and 2750rpm at 100kph in 5th.
I have 175/70/R13 tires on. I do not have a standard tacho and was just wondering if anyone had one and could confirm these numbers were correct or if my speedo was out or the tacho just read wrong?

[xsspeed]

doesnt sound wrong but then mine doesnt have a tacho does it. 1700 at 50 in 4th sounds maybe a bit low, 2750 sounds about right. 700 is on the low side, but then thats comparing it to cars with the likes of aircon etc which i am assuming your 2e doesnt have. 700 rpm to maintain oil pressure yeah sounds about right.

by the way, im putting in a fxgt cluster that has a tacho, where did you get your signal off the coil from? spliced wire or what?

[big-ben-007]

My Starlet runs a 2E with a 5 speed, also has a factory rev counter, so when I head to work tommorow I'll take a gander and see what we get

[Bling]

the size of your wheels makes no difference to the revs the guage will show at a certain speed. if they are different overall diameter to factory tho, the speedo will be out

[xsspeed]

the size of your wheels makes no difference to the revs the guage will show at a certain speed. if they are different overall diameter to factory tho, the speedo will be out

meaning wheels plus tyres, if you know the overal gear ratios you can work out roadspeed from revs, or vice versa

[GDII]

When I got the car it had 185/65/R13 on it but were a little wide for the wheels so when I got new tires I went back to factory size. The tacho is crap as I noticed it was running at 2000rpm at 50kph in 4th. Was driving home on the motorway this morning and it was reading 3200rpm at 100kph in 5th but just as I got the the top of the hill it suddenly jumped back to what it was yesterday. I got the tacho off my brother, (burning angel) he bought it for $40 2years ago and had it on his KP starlet but it was running jerky.

xsspeed, I have a plug that comes off the negative wire off the coil. That would be where the factory one would be taken off if I had one. ie big-bens starlet would have a similar loom to mine. But if you do not have that plug then find the negative wire off the coil and connect it to that. Thats what my brother did in the KP. And the i just hooked the negative and positive plus the light power wire into my cigarette lighter wires.

I do not have air con or PS. My engine is pretty hard to stall.

Big-ben-007? Have you noticed a flat spot in the power around 2000rpm? Mine does from 1000-2500rpm then takes off, with the little power it does have [/quote]

[slighty_sykotic]

Big-ben-007? Have you noticed a flat spot in the power around 2000rpm? Mine does from 1000-2500rpm then takes off, with the little power it does have

[/quote]

It's called a 2e carb.

They are pretty shocking

[GDII]

Yea they are very bad engines. Mine leaks oil everywhere.
I'm looking at buying either and ae92 Levin or fxgt. Or something RWD like corolla or starlet, but they are starting to cost lots when they are not worth that much.

[xsspeed]

have to disagree with you guys. my 2e engine is nothing but perfect, no leaks or anything, and compare it to the 4a engine of the same time its lightyears ahead. either that or i have a good mechanic whose done a miracle tune on it in the past. for an entry level motor i reckon they are pretty good.
im planning on keeping mine when i put the 20V 4age in to do an efi conversion, and hopefully 4efte hybrid.
2efte anyone?
quite a few rally guys do the 2agte hybrid so they can race in the same class as 4k motors, but make around 50% more power than them.

[GDII]

If an engine is looked after it should still be good. I don't think my one was because its full of dirt and smokes badly after going down hill then booting it.
Just got the car till I can find one I want. Goes fine. But want something faster and something that doesn't have heaps of body roll. Its not safe lol.

[xsspeed]

lol i agree on the body roll, but mine will soon have fxgt suspension and new springs so that will help.

[GDII]

One of my mates picked up a crashed ae92 Levin for $250 so he could use the red top in his ke70. He said he would give me the struts off it. I can just swap the struts over so he can still move the car.

I wonder if the spring rate would be higher on the levin? I already have Caldina GT-T springs from AJz car in the front. Helped the handling alot. But my car has no potential for performance unless thousands are spent. I want to get into gravel hillclimbs and would prefer something better.

[Bling]

the size of your wheels makes no difference to the revs the guage will show at a certain speed. if they are different overall diameter to factory tho, the speedo will be out

meaning wheels plus tyres, if you know the overal gear ratios you can work out roadspeed from revs, or vice versa

why would one bother to do this?

i was mearly point out the overall size of his wheels has no affect on the speed the speedo will show.

[xsspeed]

cos he was tryna see if his tacho was reading right, so if he had the final drive ratio, he could use his speed in m/s, divide it by the perimeter of his tyre, times by 60 to get rpm of the wheels, then divide by the drive ratio to get true engine speed.

[GDII]

I told you what my tyre size was in case you had a different size on your car. The tacho is cheap and doesn't work correctly all the time. Its seems to have gone up. 2000rpm at 50kph in 4th. 3200rpm at 100kph in 5th. I think thats what its meant to be. Im not too concerned now what it reads. But i don't think revving it over 6k is good for it lol.

[big-ben-007]

Big-ben-007? Have you noticed a flat spot in the power around 2000rpm? Mine does from 1000-2500rpm then takes off, with the little power it does have

[/quote]

No mine seems sweet in between 1000-2500rpm (and shoots off above 5500rpm), although from what I can gather yours is a carb whilst mine in injected.

Anyway at 50kph 1900rpm in 4th, and 2750 in 3rd. havnt been 100kph for a while so ill have to check that out and stop driving the levin around

[GDII]

Yea its carb. And has the smallest exhuast pipe ever. A KP61 starlet has a bigger one. I have heard of a 2E carb with 24 degrees timing on it and runs only on 96 feul. Goes well I heard.

Thanks for your help. Its obvious that my tacho and speedo do not read correctly