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i just rebuilt my engine. while i had it apart i put in a new clutch and pressure plate. now, it's been a while since i drove it "2 years" but i don't remember it being at 2500 rpms at 45 mph in 4th gear. any idea's? has this ever happened to anyone. or is that normal? i'm at a loss. oh and i've tried adjusting my clutch. it's a cable clutch. any help would be awsome. thanks in advance

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1980 luv 1.8 finally running!!!...... and then like a moron i sold it
got another one!!! 1980 mikado. v8 swap here we come... nope divorce and cross country move happened.
got another one!!! 1980 4x4 mikado sport. rusty beater for now...

That sounds right to me.

A slipping clutch will let the engine rev at various RPMs with the truck in gear and the pedal all the way up.

You've been driving a V8 too long to remember the familiar sound of an Isuzu engine all wound up.

-DK

dkay, I've got a question about what you just said.

I gotta tell ya, that at 4000 rpm, I'm starting to wonder if this little motor is gonna stay together. I know I'm in a tin can, no carpet, so the noise is exacerbated, but does this sound "kinda normal"?

Last vehicle I pushed to 6k was a 'Vette. It was a deep roar thru the headers, but this little thing sounds like a blender.

well before mine spun a crank bearing it had 286000 miles on it and i had it up to around 5-6 grand all the time. ok not all the time but if some punk in a honda thought he could take me i did. haven't lost to a honda yet

_________________
1980 luv 1.8 finally running!!!...... and then like a moron i sold it
got another one!!! 1980 mikado. v8 swap here we come... nope divorce and cross country move happened.
got another one!!! 1980 4x4 mikado sport. rusty beater for now...

I used to dump the clutch at 6K. With only a tonneau cover on the back it would sit and spin for quite a bit.

My Series 9 shop manual has the HP rated at 80HP @ 4800 RPM and torque at 95 lb-ft @ 3000 RPM.

They do not list redline or maximum RPM, just where they took their measurements.

-DK

If you have a 4x4 with 185/75R14 tires they rotate 834.34 times per mile.

You were curious about 2500 RPMs...

2500 * 60 = 150,000
834.34 * 4.10 = 3420.794

150,000 / 3420.794 = 43.8 MPH

If you have a 2WD with 3.73 gears it would be: 48.2 MPG. Watch out for cops if you are using the stock speedometer gears.

So, 2500 is perfectly normal for goin' about 45 MPH.

I prefer to run 205/65R15's on my 4x4 which would put me at about: 44.8 MPH since they rotate 816.01 revolutions per mile. No chance of me getting a ticket reading the stock speedometer.

-DK

wow another guru with very useful wisdom thanks man i was freakin out about maybe a defective pressure plate or something. i guess i just need to find a 5 speed to get my r's down then. i'm thinkin about getting a rear end out of a diesel. i hear they're taller geared.

_________________
1980 luv 1.8 finally running!!!...... and then like a moron i sold it
got another one!!! 1980 mikado. v8 swap here we come... nope divorce and cross country move happened.
got another one!!! 1980 4x4 mikado sport. rusty beater for now...