Is anybody else reminded of Slick50? Since NHRA, CART, & NASCAR rebuild
engines every day, why would they car about long life?
Paul
----- Original Message -----
From: Bob Davis <rdavis4@cfl.rr.com>
To: <datsun-roadsters@autox.team.net>
Sent: Tuesday, June 25, 2002 7:38 AM
Subject: Engine rebuild: coatings
> I am in the process of rebuilding the engine for my racer and was turned
onto
> a company that impregnates a polymer coating into/onto a variety of engine
> components. The most significant benefit being the reduction of engine
heat
> that effects and reduces the life of expensive parts. In the case of a U20
> engine it will virtually eliminate chain stretching. The information
> originally came from Malvern Racing, David Webber, www.malvernracing.com,
a
> long time Datsun/Nissan racer and race car preparer located in Virginia
(by
> the way, if you need forged pistons, Malvern has them in stock). The web
site
> for the coating company is www.polydyn.com. In the message stream below
are
> quotes for doing a variety of engine components for the U20 engine.
>
> thxx
> Bob Davis
> 67.5 2L
> Vintage Racer
> ----- Original Message -----
> From: Carl Benton
> To: Bob Davis
> Sent: Monday, June 24, 2002 7:40 PM
> Subject: Re: coatings
>
>
> Bob
>
> First the machine work needs to be finished. Check the rod and main
bearing
> clearances,piston to cylinder wall clearances,valve job finished,valve
guides
> size for the new valves and make sure the cylinder head deck is true and
flat.
> Send your parts for coatings.
>
> Crankshaft counterweights coat with PolyDyn PD-14
> Silver..........................................$ 115.00
>
> Camshaft coat with PolyDyn
>
DL..........................................................................
.
> ......$ 30.00
>
> Timing Chains coat with PolyDyn PD...
> ea...................................................................$
15.00
>
> Timing Gears coat with PolyDyn
> DL..............................................................all 3
for....$
> 25.00
>
> Chain Guides and Chain tensioners do not coat.
>
> Cam Followers coat with PolyDyn
> DL............................................................each.......$
> 3.50
>
> Valve springs coat with PolyDyn
> DL.......................................................per each pc.....$
> 1.75
>
> Rod bearings coat with PolyDyn
> DL......................................................set of 4
jor........$
> 16.50
>
> Main bearing set coat with PolyDyn
>
DL.........................................................................$
> 33.00
>
> Piston coat skirts with PolyDyn RP,tops with PolyDyn HS comp
> Gold.........each.............$32.00
>
> Cylinder head and valves coat with PolyDyn HS comp Gold combustion
chambers
> and exhaust ports,face of
>
valves......................................................................
.
> ..per chamber...........$ 35.00
>
> Best Regards
>
> Carl Benton, Polymer Dynamics Inc.
>
> 713-694-3296 office
>
> 713-694-6915 fax
>
>
> Bob Davis <rdavis4@cfl.rr.com> wrote:
>
> I race a 2 litre 4 cylinder overhead cam Datsun roadster and am in the
> process of an engine rebuild. Needless to say, new parts are scarce and
> expensive, especially timing chain components. At what point in the
> rebuild/machining should coatings be applied and what is the apprx. costs?
>
> - Crankshaft (5 main)
> - Camshaft (new)
> - 2 Timing Chains (new)
> - 3 Timing Gears (new)
> - 2 Chain guides (new). These have a hard rubberized surface the chains
run
> across.
> - 2 Hydraulic Chain tensioners (new) - These have some kind of hard
> rubberized blocks that the chains run across.
> - 8 cam followers (rocker arms)
> -Valve springs (dual)
> - Rod and main bearing shells
> - Forged pistons (new)
> - 8 Valves (new)
> - Cylinder head (aluminum)
>
> thxx
> Bob Davis
> 67.5 2L
> Vintage Racer
>
>
>
>
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