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Underbody braces, turbos and more!

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PostPosted: Wed Jan 06, 2016 12:33 pm 
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Location: AZ
Figured some of the swift fans might enjoy this project I'm working on. I'm swapping a 92 Swift 8v SOHC 1.3L into a 2006 Joyner SandViper. I bought the engine from some drugged out kid in Phoenix for $160 with the intention of rebuilding it and adding a turbo. If you want to check out more about the buggy build process, I've got a build thread here http://buggynews.com/joyner-800-suzuki-swift-1-3l-swap-t47879.html, otherwise I'll update some engine related stuff here.

Some planned upgrades:
-75mm vitara pistons
-Custom intake/exhaust manifold
-T25 Garrett Turbo
-MegaSquirt v3/MS3X
-Boost Control
-Fully sequential MPFI
-COP Ignition
-Porting (especially exhaust)

Here's what the engine is going into (has since been repainted):

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Here's the 92 engine with 160k miles before tear down:

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Pulled off the dirty head

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Lovely surprise thanks to the kid destroying the clutch prior to selling this engine to me. Those are all clutch fibers.

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Made this little bracket to hold the main crank pulley to get the bolt off. It worked so well I had to share it. I was hitting that bolt with a 1200ft-lb impact hammer for about 20 minutes before making the bracket. Once I made that bracket, the bolt spun off with the impact in a few seconds.

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After 25lbs of soda blasting

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The H-beam rods and vitara pistons going into this build.

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Block was dropped off to be bored out yesterday, so I should have some nice updates on the engine over the next few weeks.


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PostPosted: Wed Jan 06, 2016 6:01 pm 
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Location: columbus, ohio
the ms3 is overkill, save some money and use the ms2 ver3.

the ms3 is all set for 8 cylinders and the kit includes 4 extra coil and injector drivers, more than you'll need. :wink:

if you want to run sequential and direct, use this quad driver board http://jbperf.com/quad_ign_inj/index.html and omit the injection and ignition drivers on the heat sink for the enclosure. the quad driver board runs way cooler.

i'm taking for granted that you will do a multiport injection with the turbo mod.

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PostPosted: Wed Jan 06, 2016 8:10 pm 
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Those rods are overkill, too and the Vitara pistons not a great choice. You'll need a cam if you want to make some decent power. Stock cam is WAY too mild

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PostPosted: Mon Jan 11, 2016 5:47 pm 
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t3 ragtop wrote:
the ms3 is overkill, save some money and use the ms2 ver3.

the ms3 is all set for 8 cylinders and the kit includes 4 extra coil and injector drivers, more than you'll need. :wink:

if you want to run sequential and direct, use this quad driver board http://jbperf.com/quad_ign_inj/index.html and omit the injection and ignition drivers on the heat sink for the enclosure. the quad driver board runs way cooler.

i'm taking for granted that you will do a multiport injection with the turbo mod.


Well the MS3+MS3X setup was purchased a while a go, but I appreciate the recommendation. I'm a software engineer, so I sort of specialize in electronics overkill anyway. Not to mention I got it from a part-out for $350!


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PostPosted: Mon Jan 11, 2016 6:07 pm 
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suprf1y wrote:
Those rods are overkill, too and the Vitara pistons not a great choice. You'll need a cam if you want to make some decent power. Stock cam is WAY too mild


Yeah the rods are overkill...this project exudes overkill.

What's wrong with the Vitaras?

And I'll end up with a cam from someone who makes them for this engine. Wish I knew someone...


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PostPosted: Mon Jan 11, 2016 7:46 pm 
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The Vitara piston sits too low in the block.
People used them in the DOHC application because that's all that was available, but with the size of your combustion chamber, you could have really low compression.

SOHC 16V 1.3 pistons are the best choice, but I think I told you that before.

226/395 cam is what you want

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PostPosted: Tue Jan 12, 2016 11:05 am 
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suprf1y wrote:
The Vitara piston sits too low in the block.
People used them in the DOHC application because that's all that was available, but with the size of your combustion chamber, you could have really low compression.

SOHC 16V 1.3 pistons are the best choice, but I think I told you that before.

226/395 cam is what you want


Well it'll be interesting to see what the compression ratio ends up being. I'm expecting significantly lower, but too low to tune around? I guess we'll see. Those other pistons do look quite a bit less dished too. Maybe a fallback piston.

Cam noted. Thanks.


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PostPosted: Tue Jan 12, 2016 12:20 pm 
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It's not so much the dish as it is the deck, or pin height. The 1.6 piston sits too low in the bore. The 1.3 would be flush, or possibly even stick out a bit, which you could easily machine off for a (perfect) zero deck height.

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PostPosted: Tue Jan 19, 2016 12:07 am 
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Took some quick measurements today while assembling...

0.8mm deck clearance
74.9mm bore
75.5mm stroke

32cc combustion chamber volume
12.5cc dish volume
~.7mm gasket thickness

I calculated 7.51:1 compression ratio.

About what I was expecting to see, leaves much room for boost. Totally doable.

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PostPosted: Mon Feb 08, 2016 12:25 pm 
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New synchros and bearings

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Hydraulic slave with a fairly crude bracket.

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Started fabbing the exhaust

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PostPosted: Mon Feb 08, 2016 4:14 pm 
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calco88 wrote:

32cc combustion chamber volume
12.5cc dish volume
~.7mm gasket thickness

I calculated 7.51:1 compression ratio.

About what I was expecting to see, leaves much room for boost. Totally doable.


That's optimistic. Gasket thickness will be 1mm and I think (could be wrong) that the chamber is larger than that.

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PostPosted: Mon Feb 15, 2016 11:02 am 
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Completed the header and turbo mounting this weekend.

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