Hi guys,

I recently got a sami with 1.6 EFI 8v swapped in. History unknown unfortunately.

Just did a tune-up - plugs, wires, 02 sensor, Accel Coil, seafom - the basics.

With some help from guys on here, finally got it started...

It runs quite well 1-3 gears pretty peppy actually, but once you hit 4th, she falls on her face...no power, 5th is a rare occurence. Tops out at about 50-55mph.

It has 31s and SPOA, I don't believe it's been re-geared.

Is it that necessary to re-gear for just 31s? Is there anything I should look at?  I've never driven a sami with this motor swapped in before, so I am not sure what to. compare it to.

With the condition of the motor unknown, I'm probably doing a leak down test this weekend and check the timing.

I have no intentions of driving this thing at 70 or 80mph, but I'd like to know that it could get there!

Thanks!

I would say it needs regeared.  4.62s are a popular option with 31s.
Timing check, compression check and leakdown test are all good ideas.  The last two will give you a good idea on what kind of condition the engine is in.

Thanks for your response, and thanks for the help in my previous thread...I felt like an idiot, I wasn't very clear...

So 4.62s are popular for 31s, I don't plan on going any larger, as it sits this is just a decent little trail rig. SPOA and 31s.

Definitely doing those tests this weekend!

Do you have any experience with a Torquer cam? Header recommendation? Is it worth spending the extra money going Thorley vs others like Pacesetter?

Thanks for your response, and thanks for the help in my previous thread...I felt like an idiot, I wasn't very clear...

So 4.62s are popular for 31s, I don't plan on going any larger, as it sits this is just a decent little trail rig. SPOA and 31s.

Definitely doing those tests this weekend!

Do you have any experience with a Torquer cam? Header recommendation? Is it worth spending the extra money going Thorley vs others like Pacesetter?

I put a cam, header and high flow exhaust on a 1.6 8V sidekick I had years ago.  I didn't really see any difference....at least not enough to warrant the cost of it all.  Others may have different opinions.