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 Post subject: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 2:17 am 
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Posts: 6838
Location: Brisbane
Benefits:
Replaces the narrow angle 16 valve SOHC design fitted with throttle-body injection for a 16 valve DOHC equipped with multi-point EFI.

Mods Required:
Firstly (in case you're thinking of another way), the 1600 engine's crank is slightly too long to fit in the 1300 twin cam block, which is why this head conversion is the only viable option for a big cube Swift.

A 16 valve 1600 bottom end is the best platform, as it already has valve recesses in each piston. Stud patterns, bolt sizes and galleries all match perfectly. The block should be then equipped with a 1.8mm Vitara head gasket (Part No 1114171C00) to lower the CR to a more manageable level. Compression ratio with this head gasket will work out to just over 10:1.

A cam belt sourced from a belt supplier (such as Gates), is also needed to compensate for the 1600's 30mm taller block. The belt must be connected to the GTi's crank pulley (Part No 12631 53B00) while a smaller diameter tensioner (Part No 12810 53B01000) may give more flexibility when choosing the belt. In addition, custom cam belt covers will need to be fabricated.

The safest and most effective method of controlling fuel and ignition is to use an aftermarket ECU suitably programmed.


Regarding the Suzuki head conversion: yes the head fits on easily enough. However to get the block to fit into the Suzuki GTi's engine bay, the gear box must be removed, the block alloy welded, and new holes drilled to match the existing holes on the gearbox. When this is done, shavings will enter the cylinders and the heat from the welding may distort the block. Also, new engine mounts must be fabricated to mount the new block. The engine will sit a lot higher, so cooling is an issue. In many cases, the oil pump will need rebuilding to provide enough oil pressure to operate the buckets properly. These are just a few extra things to consider if you wish to under take this conversion.

I hope this helps some of you


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 3:21 am 
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soudns like alot of work - and minor stuff aswell to make sure u dont boj it up. also papa know anywhere to get some $$$$$$$$ :D;)


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 3:33 am 
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Sounding good


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 3:44 am 
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Location: Brisbane
$$$ equity mate !!!


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 6:25 am 
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Location: Holland
In Europe are all the 1.6 headgasskets the same.


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Sun Mar 23, 2003 6:47 am 
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check these sites out
http://www.ssgti.net/tech/swap2.htm
http://pub83.ezboard.com/fteamswiftfrm9 ... D=58.topic


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 Post subject: RE: Twin cam G13B head onto G16A block.
PostPosted: Mon Mar 24, 2003 12:43 am 
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Location: Jimboomba, Qld
or do what i did :D


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 Post subject: Re: Twin cam G13B head onto G16A block.
PostPosted: Tue May 02, 2017 12:42 pm 
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Location: Pennsylvania
I don't know if anyone will reply, seems like an old post but I'll give it a shot. I just got an X90 with the g16a, 16 valve. Would a g13b head swap be easy and worth it, the process seems easy enough compared to other mods. Are there any more specifics I'd have to know too? I'm new to the G series, so I might ask stupid questions


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 Post subject: Re: Twin cam G13B head onto G16A block.
PostPosted: Wed May 03, 2017 12:21 pm 
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Location: Brisbane
The biggest problem they had was with the head gaskets catching the pistons and dragging s**t into the bore.

If you use a custom gasket it should help.

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