looking to swap out my 1.3 in my 88 Sammy would like to know what is the best setup any of y'all run. I have heard that a 1.6 16 valve was a good choice. If so what can be done to juice it up if needed. My Sammy is sprung over with 33" toyos and 5.13 gears a minny spool in the rear, lockright in front stock tranny and T-case. Any and all help would be great.

Thanks: And Zukiup

Well you're going from 63bhp to 95bhp so you already get around a 50% power increase and a big increase in torque. You might want to add a header and big bore exhaust, apart from that I'd leave it stock to ensure reliability.

I already have 2 1/4 inch exahaust and a header on the 1.3....will the header fit a 1.6 block?
I have heard some one say before that using a 8 valve head on a 16 valve block or vise versa will increase the power or somthing like that. Not shure how it went.

Again thanks for any and all help on this. Would be interested in knowing what some of the motors are that you all run to see if iam making the right choice.

I have heard that using an 8V head on a 16V block will increase the power on an 8V motor, I'm not sure about this, I have also read the opposite.
The 8V header won't fit on a 16V block.

Cool thanks for the info and help.

  looking to swap out my 1.3 in my 88 Sammy would like to know what is the best setup any of y'all run. I have heard that a 1.6 16 valve was a good choice. If so what can be done to juice it up if needed. My Sammy is sprung over with 33" toyos and 5.13 gears a minny spool in the rear, lockright in front stock tranny and T-case. Any and all help would be great.

Thanks: And Zukiup

I run a 1.3 w/ 10.2:1 pistons and a wicked cam. Works for me and my friends!!!

I have heard that using an 8V head on a 16V block will increase the power on an 8V motor, I'm not sure about this, I have also read the opposite.
The 8V header won't fit on a 16V block.

1.6 8V and 1.6 16V blocks are the same.  So unless the pistons are different (bumping the compression ratio up), it won't make any difference if you run an 8V head on an 8V or 16V block.

Quote from: Rhinoman on October 05, 2009, 02:51:53 PM

I have heard that using an 8V head on a 16V block will increase the power on an 8V motor, I'm not sure about this, I have also read the opposite.
The 8V header won't fit on a 16V block.

1.6 8V and 1.6 16V blocks are the same.  So unless the pistons are different (bumping the compression ratio up), it won't make any difference if you run an 8V head on an 8V or 16V block.

The pistons are very different, so is the combustion chamber shape and so are the valve angles and valve timing. 8V and 16v heads are chalk and cheese, IIRC CJ has done some research on this.

Quote from: Skyhiranger on October 11, 2009, 11:43:28 AM

Quote from: Rhinoman on October 05, 2009, 02:51:53 PM

I have heard that using an 8V head on a 16V block will increase the power on an 8V motor, I'm not sure about this, I have also read the opposite.
The 8V header won't fit on a 16V block.

1.6 8V and 1.6 16V blocks are the same.  So unless the pistons are different (bumping the compression ratio up), it won't make any difference if you run an 8V head on an 8V or 16V block.

The pistons are very different, so is the combustion chamber shape and so are the valve angles and valve timing. 8V and 16v heads are chalk and cheese, IIRC CJ has done some research on this.

I know the pistons have different reliefs cut in them for the 8Vs vs. the 16Vs.  But is one of them higher compression than the other?  If not, and the only difference is in the reliefs, then there is no difference block wise between a 16V and 8V.
Yes, I know the heads are "chalk and cheese" but you are talking about block differences, not head differences.  The combustion chamber and valve angles and valve timing all have to do with the head, not the block.

Wait, when you say "8V", are you talking 1.3 8V or 1.6 8V?  If you are talking 1.3 8V, then yeah, there is a lot of difference between that block and a 1.6 8V or 16V block.  And, yes, swapping a 1.6 block in place of a 1.3 block will  bump the power up a little, simply because of the increased displacement.  1.6 pistons are the same diameter as .040 over 1.3 pistons....IIRC.