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 Post subject: What connecting rod?
PostPosted: Sat Jan 20, 2007 11:07 pm 
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Joined: Thu Nov 10, 2005 3:28 pm
Posts: 12
Location: Michigan
I have a 1987 Suzuki Samurai with a g13a engine. I have a forged crankout of a g13b. My plan is to build a high compression (around 14:1) n/a engine running on propane using my g13a block, my forged crank, and a 1.6l 8v head. I'm trying to figure out what connecting rod to use to make up for the difference in block height. Are the g13a and g13b rods the same length? If so, are there any taller pistons that I can use?

Any help will be greatly appreciated.

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1987 Suzuki Samurai 1.3 g13a 4x4, getting toyota axles soon!

1998 Chevy Blazer 4.3l 4x4


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 Post subject:
PostPosted: Sat Jan 20, 2007 11:58 pm 
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Joined: Sat Jun 03, 2006 11:54 pm
Posts: 673
Location: Illinois
G10's and G13's have the same bore, stroke, rod length, deck height, etc. The G16's have a taller deck, and a longer rod, a longer stroke, but they share the same bore size as the 1.0's and 1.3's. For compression like that, mill your head (superfly says you can get really crazy on how much you can cut off of it, PM him for an answer to how much will give you that compression) or, install dome pistons that are custom made, or from ssgti.

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 Post subject:
PostPosted: Sun Jan 21, 2007 12:12 am 
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Joined: Thu Nov 10, 2005 3:28 pm
Posts: 12
Location: Michigan
The g13a is a 1324cc engine, and the g13b is a 1298cc engine. The g13a has a longer stroke, and, I believe, a taller block.

Also, out of curiosity, why was this thread moved?

All help will be greatly appreciated.

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1987 Suzuki Samurai 1.3 g13a 4x4, getting toyota axles soon!

1998 Chevy Blazer 4.3l 4x4


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 Post subject:
PostPosted: Sun Jan 21, 2007 12:23 am 
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Joined: Sat Jun 03, 2006 11:54 pm
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Location: Illinois
Ok, sorry, I need an education in the a, b, c, h, l, z designation then. Just a dumb Norweigian here,

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 Post subject:
PostPosted: Sun Jan 21, 2007 5:33 am 
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Joined: Tue Nov 23, 2004 7:34 am
Posts: 84
Location: Sydney
yeah stroke changes between a g13a and a g13b (not much)

I got a g13a and g13ba (Australian 8v '89 onwards) siting in the garage, externally they measure up the same. i'm pretty sure the extra displacement is in the crank and not the rods.

Regardless of which rod it comes down to the piston, the g13ba and g13a both take a 17mm pin and a g13b DOHC takes a 19mm pin. I'm not sure how you intend to get near 14:1 compression. If you are decking the block or head then you need to stick to the g13a rods for the pistons as i'm sure you will have valve and piston contact.

If you are getting custom pistons made, then either!

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