Boring a 3a

[area53 at validpath.com (Jeff Toomasson)]

Yeah, but there's a concern about the I-shaft bearings or something between the 
two that's not 100% plug-n-play...

Hey, Bryan - still looking for pistons?:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?
ViewItem&rd=1&item=7925692685&category=33617&sspagename=WDVW

JT
> Hey man, that might just help me, if a 3A block is the same as a 9a. I can
> pick one up at a local yard and stuff it full of my good 9A internals.
>  
> Sweet.
> 
> Jeff Toomasson <area53@validpath.com> wrote:
> Dimensionally, the 3A is the same as the 9A (2L16v). The ultra-max has been
>  considered to be 84.5 w/ 84.0 considered to be the safest, IIRC.
> 
> If you have intentions of ever having to bore it out again in the future,
> don't  go beyond 83.5. I believe pistons can be custom made by JE to the
> 0.25mm, so  that would give two future bores (83.75 and 84.0). If you need
> to more than two  bores over the engine's natural life, then you shouldn't
> be playing with them  in the first place!! :)
> 
> HTH, JT
> 
>> Got my block measured by my cousin (a machinist) using an inside
>> micrometer today. The measurements seemed ok, but upon further inspection
>> we saw that cylinder number 4 was pitting.
>> 
>> http://memimage.cardomain.net/member_img_a/566365_41_full.jpg
>> 
>> Then, what we thought was the carbon ring, was actually the real diameter
>> of the cylinder wall...
>> 
>> http://memimage.cardomain.net/member_img_a/566365_42_full.jpg
>> 
>> Is it safe to bore the 3a out with it having thin cylinder walls? If it 
>> is, what is the most I can bore it out to?
>> 
>> Thanks
>> 
>> Bryan
>> Fort McMurray, AB
>> 81 Volkswagen Scirocco
>> 
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