[V8] Ball hone

[Dave Saad]

I hear it (coke) does wonders on toilet bowl scale...


On Aug 15, 2007, at 7:50 AM, Coleman, David wrote:

> I recall that alusil / refurbish chatter as well, but hadn't  
> recalled if
> a ball hone was invasive enough to do damage.  I have no reason to
> suspect any of the cylinders in my 4.2 are anything but pristine...  
> When
> I finally get into it, I'll stick to something relatively harmless.  I
> wonder if coca-cola would work (j/k).
>
>
>
>> -----Original Message-----
>>
>> I see some talk here about nikasil - and AFAIK, these motors
>> are all Alusil. I am unaware of any model year differences
>> and the Audi Technician training manual from I believe 1989
>> says they are Alusil.
>> You can have either technology refurbished - but it takes
>> very specialized equipment.
>> I had a link to a shop that could do it, and I believe Ron
>> found it as well.
>>
>> All I had to do was clean out the bores (my machinist did
>> this so I don't know exactly what he used) and install the
>> new rings. Since I was mechanically in spec everywhere, I
>> have had no problems, and oil usage has dropped dramatically.
>> The one thing I did not do was change the lifters, and they
>> are clacking a little. Not a big deal I think but slightly  
>> irritating.
>> I have not driven the car too much lately but last week I
>> took a 350 mile trip with extended driving time at 100MPH
>> (gotta love southern Idaho). The oil level on the dipstick
>> did not change. My old motor would have sucked down a 1/2
>> quart on that trip.
>>
>> Dave
>>
>>
>> On Aug 14, 2007, at 8:20 PM, Coleman, David wrote:
>>
>>> So what exactly are you saying Dave?  It's safe or not?
>>>
>>> ;-)
>>>
>>> I'm going over in my mind the top end work I'm planning, and was
>>> thinking about doing the rings (and bearings if needed) while the
>>> heads were off. I'd leave the  block in the car and not touch the
>>> crank (that stuff will rot your brain).
>>>
>>>
>>>
>>>
>>> --------------------------
>>> David A. Coleman
>>> BlackRock
>>> Sent via BlackBerry Wireless
>>>
>>>
>>> ----- Original Message -----
>>> From: v8-bounces at audifans.com <v8-bounces at audifans.com>
>>> To: v8 at audifans.com <v8 at audifans.com>
>>> Sent: Tue Aug 14 21:43:22 2007
>>> Subject: Re: [V8] Ball hone
>>>
>>>
>>>
>>> IT IS NOT SAFE TO RUN A BALL HONE THROUGH THE CYLINDERS!!!
>>>
>>> DO
>>> NOT DO THIS!!!
>>>
>>> YOU WILL DESTROY THE BLOCK!!!!
>>>
>>> If the
>>> cylinders are within wear limits, just clean them up with a
>> chemical
>>> cleaner and call it good. If they are out of wear limits,
>> well - you
>>> are hosed unless you want to find a qualified shop to refurbish the
>>> block. It can be done but you may as well just buy a new
>> A8. It will
>>> probably be cheaper and easier.
>>>
>>> Are you replacing the rings?
>>>
>>> I
>>> would start talking to pashamad. He helped me get my motor
>> rebuilt and
>>> it seems to be running great. His method - and the one I
>> used - was to
>>> leave the crank in place, just replace the rings, and
>> re-use the old
>>> rod bearings. Of course everything was measured and
>> verified to be in
>>> spec.
>>> (bearings and bores)
>>>
>>> For that matter - he just listed a rebuilt motor here a few
>> days ago
>>> from a wrecked car. That might just be the easy fix for you
>> - unless
>>> you are a glutton for Audi punishment like I am
>>> :-)
>>>
>>>
>>> Dave
>>>
>>>
>>>> Just to be sure, it's safe
>>> to run a ball hone through the cylinders?  Or
>>>> is there some
>>> detrimental effect on the lining?
>
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