[HEADWORK] Port Match and Polishing

[pbureau@attbi.com (ATS - Patrick Bureau)]

Very Sweet... What did you use to do the P&P on the head, I am about to do
this on my 8v JH Head, and I have been looking for information on what
materials to use to do this (BY Hand or mechanical means?)  0.40" shaves
eh..? thats a lot indeed... I have thinking of sending mine out to be shaved
0.20" (to push the compression from 10:1 to 10.5/11:1 maybe, what kind of
compression you have now with a 0.40" shave doen to the head, I am very
curious of the results on that !

==========================================
ATS - Patrick Bureau
1985 8v "ATS GTX" <- About to embark in ABA/JH project
1988 16v "ATS 16V" <- For Sale : 1500.00
Web Site : http://longcoeur.com/scirocco


=>-----Original Message-----
=>From: scirocco-l-admin@scirocco.org
=>[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Dave Ewing
=>Sent: Sunday, April 14, 2002 4:36 AM
=>To: Scirocco List
=>Subject: Re: [HEADWORK] Port Match and Polishing
=>
=>
=>I installed a head that I port and polished myself last week.  I
=>didn't take
=>a bunch off but smoothed things out mostly.   Runs very strong and quiet.
=>The following is what I did:
=>
=>1.  Shaved head 40 thousandths  (the MAX for shaving a 16v head without
=>having to move the tensioner stud--I can flip the tensioner all the way
=>over!!!)
=>
=>2.  New intake valves, exhaust valves, and valve guides.
=>
=>3.  Exhaust cam on intake side which creates an asymetrical cam set and a
=>nice lumpy idle but not radical.  Have heard that this is similar
=>to a 268?
=>I might, and probably am, wrong but I measured the lobes and the exhaust
=>lobes were much bigger over all and longer duration.
=>
=>4.  2.0L cam gears for quieter chain operation.
=>
=>5.  Adjustable cam sprocket--almost a necessity for shaving the head so
=>much.
=>
=>6.  Autotech HD springs.
=>
=>7.  Ground vave seats.
=>
=>8.  Deshrouded valves.
=>
=>9.  Slight combustion chamber polish.
=>
=>10.  Minor port and polish.
=>
=>11.  2.0L 16v head.
=>
=>12.  STOCK TIMING BELT ADJUSTER STUD!!  I installed the head with the
=>adjuster on the stud so I didn't have to pull the stud to install the
=>tensioner.  From now on, I will jack up the motor to replace this
=>so I don't
=>wear out the threads in the head.  Heck, it's only time and I have more of
=>it than money!!
=>
=>I like this setup and feel it flows nicer and smoother than the
=>P/P 1.8 head
=>with euro cam.  I still need to play with the timing a little since I
=>adjusted it advanced because of the increased compression and cam
=>setup and
=>still don't get even one ping so I think I might need to play with the
=>adjustable cam sprocket a little.
=>
=>Check out pictures of the head not installed here:
=>
=>http://pages.prodigy.net/dcewing/_uimages/2.016v1.JPG
=>http://pages.prodigy.net/dcewing/_uimages/2.016v2.JPG
=>http://pages.prodigy.net/dcewing/_uimages/2.016v3.JPG
=>http://pages.prodigy.net/dcewing/_uimages/2.016v4.JPG
=>
=>These weren't the final product but it was nice to be able to
=>take pics then
=>shape and smooth more accurately after looking at the pics.
=>
=>Dave
=>
=>
=>
=>
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