I have a Samurai on 29 inch Swamper's and I'm at 3500 rpms doing 60 mph running down the freeway. Is this normal? The stock one (205/70r15) I have can do 70 mph before hitting 3500 rpm on tach.

I just got it back on the road after the 1.6 swap and never realized the deferents. Does it sounds like it's been geared down? How can I tell or Help would be great. 

i wouldnt worry i run mine on the streets all teh time and cruise at 4300 to 4500 rpms.

but its a 1.3

two things:

a - Running around 3500 to 4000 is normal at high speeds.  Mine is a 1.6 8-valve.

and

2 - You are probably not running 60MPH at 3500 with those 29 inch tires.  I ran those numbers through the gear calc ar Ack's FAQ assuming stock gears and pre-85 fifth gear and came up with 72 MPH.

Yep, like many asian engines, the 1.3 and 1.6 are high-RPM engines.

This might help or greatly confuse you

My sammy
30"mtr's
4-1 t-case
70M.P.H. on the speedo 4250R.P.M.

now 70 M.P.H. is probably more like 75 or so. hope this helps.....

I might be able to help also


31" tyers
5.12 gears
4-1 tcase
= to fn low on the hi way
but nice on the trail 

BigZook... Thanks for the good info, very helpful. Thats the info I was out to get. 

My speedo is dead on at 40mph and at 60mph on the speedo I get passed by everyone including big rigs so I know I'm not doing 70 +

So I set off down the freeway, got to 60 mph and it was 3500 rpms like normal then put my foot in it some and got the samurai up to 70mph and it was sitting at about 4300 rpms, give or take a few. I think we have the answer to my question, theres been some regearing of this samurai before i got my hands on it. 

Now how do I figure out if its been done in the transfer case or the diffs?

Now how do I figure out if its been done in the transfer case or the diffs?

You can get a solid estimate of your rear-end ratio (actually, you might even get the exact ratio this way if you've got mad Jedi ninja skills..) by jacking it up and counting how many times the driveshaft rotates for each rotation of the rear wheels. 

Quote from: MiniFJ on September 04, 2008, 11:49:57 PM

Now how do I figure out if its been done in the transfer case or the diffs?

You can get a solid estimate of your rear-end ratio (actually, you might even get the exact ratio this way if you've got mad Jedi ninja skills..) by jacking it up and counting how many times the driveshaft rotates for each rotation of the rear wheels. 

i'm not a big star wars fan, but i dont remember Jedi ninja's. i think your messin with us