Well I'm glad I have the low down on knurling now.
Thanks David! (BTW - My e-mail reverses my name for some reason - first
name is Rabin.)
Good thing Toni has that link to Sivalves - hopefully they can hook John up
with what he needs.
Rabin
- Original Message -----
From: "David A. Hueppchen" <ojrallye@excel.net>
To: "the505inme" <the505inme@yahoo.ca>; <peugeot-L@yahoogroups.com>; "Rabin
Rutten-James" <rabin505@sasktel.net>
Sent: Friday, September 09, 2005 6:27 AM
Subject: Re: [Peugeot-L] got N9TE ex guides?
> Hello James (?) and John,
>
> I have a very good engine machine shop to do what engine work I can't do
> here. For several years now I've had them install guide liners made of
> phosporus bronze (I think) in worn valve guides. I've never had a problem,
> even in high performance or race motors with these. I can get the name if
> you need it.
>
>> Any chance they can knurl the inside of the guide to build it up then
>> machine it to fit?
>
> Old poor technique for the low budget and desparate.
>
> (I've heard of this process years ago - supposed to be better than
> replacing since the guide can now hold oil in the grooves.)
>>
> That was part of the pitch/theory to make it sound good.
>
>> **Knurling is using a special tool that "threads: into the guide forcing
>> material into valleys instead of cutting material out. You then machine
>> the hole to the right spec - essentially taking the "highs" of the
>> grooves you just put in.
>>
> It makes grooves without removing much material. Most of what was in the
> grooves is pushed up, which reduces the ID. Then it is reamed to the
> correct ID.
>
> Sounds great but if the valve guide wore out with 100% of the material,
> how long will it last with 50%?
>
>> I've never approached a shop to see if they could in fact do it - but it
>> soulnded good when I heard about it...
>>
>> (I've heard the same thing done to stock pistons to get a bit more
>> diameter out of them...)
>>
> I have a set of used forged racing pistons here and 1 or more has been
> knurled. I have been advised to not use them, so they just sit here with
> other bits of history to go with that car if it ever goes to a new home.
>
> Best Regards
> David A.Hueppchen
> OJ Rallye Automotive
> Plymouth, WI USA
> www.vclassics.com/ojrallye.htm
> www.vclassics.com/ojrally2.htm
>
> "Racing makes heroin addiction look like a vague wish for something
> salty."--Peter Egan
>
>> As for the head gasket from a Dodge - no go just like Mike said. It's
>> actually surprising how beefy the pug engine is in comparison to the
>> TDodge. The TD is a much more compact motor.
>> ----- Original Message -----
>> From: the505inme
>> To: peugeot-L@yahoogroups.com
>> Sent: Thursday, September 08, 2005 4:24 PM
>> Subject: [Peugeot-L] got N9TE ex guides?
>>
>>
>> Oh yah, the machine shop says I need 4 new exuast guides, but they
>> can't find them.
>>
>> ANybody know where I can get some?
>>
>>
>> JOhn.
>>
>>
>
>
>
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Received on Fri Sep 9 19:11:40 2005
