Samurai cruise rpm

[dustin88]

Hi, I just got my first samurai, (ive been driving jeeps for 10 years)
88 1.3 carbed.

Anyways about what rpm do you guys shift and cruise at?

I was pulling 3000 rpms going 50mph, it just feels weird to me to cruise above 3K.

[VIRGOPELO]

Hi I have a samurai 1987 and I rebuild my engine but everything is stock and makes 45m/h at 2200-2300 rpm and is making 22 miles/gallon ,(not so good) I being tell that you can get like 30M/G,this is a small engine so the rpm it will go higer than a bigger engine

[kfc333]

I know it's strange to drive a vehicle that revs so high just driving down the highway, but that's normal for the Sami. If you hit around 70 mph you'll see the rpm's come close to 4000. Gas mileage, I get between 20 and 22. I don't think 30 is possible; for the amount of horses it has, it is heavy, it's got all the 4WD stuff, and it's just not designed to be a fuel-efficient engine. But I can tell you that the exhaust system and air intake system are limiting factors to performance. The cat has lots of backpressure and they are known to clog. Freeing up the exhaust system and enlarging the exhaust pipe diameter will help with power and gas mileage. A different air intake system will help a bit, too. The 3 most significant improvements I've made to my 88 Sami to gain horses and acceleration (quite noticeable) are: (1) 2" exhaust pipes, straight-thru muffler, and high-flow cat, (2) Bosch platinum spark plugs, and (3) an Accel high output coil.

[mule]

Originally Posted by kfc333

to gain horses and acceleration (quite noticeable) are: (1) 2" exhaust pipes, straight-thru muffler, and high-flow cat, (2) Bosch platinum spark plugs, and (3) an Accel high output coil.

a header helps as well. but honestly i think the addition of the 2 in exhaust was the best bang for the buck

(oh and BTW i don't have a cat, not by my design - was missing when i got my sami)

[mule]

i guess i could answer the original question

at 65 i am over around 4K rpms


my truck
90 Samurai
3 in lift (Sprung under axle)
header, no cat
hot spark ignition

[kfc333]

Mule,
As for the difference in rpm's between vehicles, might depend on tire sizes we're each using. Off the top of my head I don't know what mine are, but they are bigger than stock... I bought the Sami that way. I do know that I'm actually moving about 3 mph faster than the speedometer reads. Also, I didn't want to admit it, but I'm not running a cat -- would you believe it just fell off??????? Anyway, with no cat, 2" pipe from header to rear, and a Cherry Bomb muffler, it's straight through. The only bad thing is that it is too loud. At highway speeds it's deafening!

[VIRGOPELO]

Hi I Have Spark Plug Ngk Iridum And I Upgrade The Ignition Coil To The One That Cames On The 1995 Suzuki Swift 1.3 And Is Working Exelent But I Only Get 22 Miles /galons And Believe It Or Not My Samurai Get To 80 Easy (i Rebuild The Engine And It Have Now 1200 Miles ) So Is Like New ,the Exest System Is The Factory One ,

[VIRGOPELO]

Hi Mule
Do You Think That If I Put A 2 Inches Pipe Wider That The Factory One Will Increase The Performance Of The Engine ,and The Sound Is To Laud?
Thanks For Your Replay On The Leaf

[mule]

Originally Posted by VIRGOPELO

Hi Mule
Do You Think That If I Put A 2 Inches Pipe Wider That The Factory One Will Increase The Performance Of The Engine ,and The Sound Is To Laud?
Thanks For Your Replay On The Leaf

i think it is a general rule, if you have to replace a stock exhaust, go at least one size larger. i forgot to mention that i also have a flowmaster 40 series muffler - and yeah it is loud. but i love the little samurai, its loud, has little to know creature comforts - very spartan --> and that is why i love mine.

[mule]

Originally Posted by kfc333

depend on tire sizes we're each using.

oh yeah i for got to mention that i am running 235/75/15