Revs too high ? - Toyota Nation Forum : Toyota Car and Truck Forums

DJR-TRD · 07-10-2010, 05:12 PM

Hi guys,
I have a problem with my 95 Corolla. Since I live in Central America, it's a jap spec. I swapped in a 3EE engine (1.5L).
My problem is that my revs are too high while cruising. At 5th gear, 60mph= 3500rpm. I tested on an empty strip and will top at 95mph at 5600rpm.

When it used to have the original 2E engine (1.3L) revs were lower and normal. At first I thought my speedo was off, but checked with gps and both speeds match closely.

I'm using the same tranny and diff. Stock tire size. My tranny is a C150.

Ratios are:
1st 3.555
2nd 1.904
3rd 1.310
4th 0.969
5th 0.815
final 3.526

Any ideas ??
Thanks!!

BigDAT · 07-10-2010, 05:35 PM

3500 is too high in 3rd gear @ 60?
5600 is too high for 95?

I dont see an issue, but maybe its just me.

DJR-TRD · 07-10-2010, 05:49 PM

Its 5th gear not 3rd

BigDAT · 07-11-2010, 10:11 AM

oops, I misread, sorry.

Steelballz · 07-11-2010, 06:18 PM

the revs are definately off man, I have a 4e-fe engined corolla and I'm at around 2800rpm when at 62.5mph (100kmh)....

I want imagine why, as you said its still the same gearbox, diff and wheelsize?!? :o

Bitter · 07-11-2010, 06:23 PM

slipping clutch possibly?

Steelballz · 07-11-2010, 06:42 PM

thats possible, but if the clutch was slipping as bad as they do when they go in these shape corolla's he'd be very very lucky to see 60mph top speed never mind 96 lol...

there has to be a gearing issue in the car, I'd say try fitting the gearbox that was bolted to the donor engine and se if that solves the problem...

cipher93 · 07-11-2010, 09:27 PM

I don't know what your transmission options are. I am not an expert, but by looking at that either your transmission gears are too short, or the differential ratio is too short. What is the power band on the engine, and where is the engine after each gear change? That will help you figure out the ratios in either the trans or differential you need. I would also highly suggest putting on a gearbox matched to the engine though if you've not already.

DJR-TRD · 07-15-2010, 10:53 AM

Thanks for the replies!!

I was told that the clutch may be a possible cause.

I did my homework and both engines, old and new use the exact same transmission. I even checked with another car that has the same engine and on the vin plate says the same model tranny I got.