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Re: [Spridgets] '59 sprite engine tuning data

To: richard@kleihorst.com
Subject: Re: [Spridgets] '59 sprite engine tuning data
From: Brad Fornal <tequila.brad@gmail.com>
Date: Fri, 18 Jun 2010 08:11:57 -0500
FWIW, the valve settings will affect the strength of vacuum draw on the
carbs. Set them a bit loose, and not as strong a pull.

On Fri, Jun 18, 2010 at 6:44 AM, Richard Kleihorst <richard@kleihorst.com>wrote:

> Hi All,
>
>
>
> I am trying to get my new obsession through testing here to get it road
> legal.
> Main challenges are the front shock absorbers, the DPO work on the front
> brakes and the emission.
> During the initial tests the emission showed a CO rating of 9.5% which is
> way
> too high.
>
> At home, I was able to set it to 1.5%, reasonably smooth running at around
> 850rpm.
> It is a 948cc dual H1 setup, K&N filters, with a skimmed head (1mm off) and
> a
> fast road Kent camshaft.
> Although the running is pretty regular, only a little bit of "galoping"
> sound
> at the back,
> feeling from the seat the car shakes at this idle speed. I achieved a good
> balancing between the carbs but noted that the front carb gives me more
> feedback with the mixture control screw than the rear carb.
>
> What I am missing in the owners manual and factory manual are data for idle
> speed
> and also ignition advance at idle speed.
> Does anyone has good numbers for these and the emission figure I should be
> looking at?
>
> I am also missing the pointers on the chaincover, or are they usually
> hiding
> from the timing light? The notch is there (I don't need to get out the
> Dremel)
>
> Should I bring the car back to testing like this (with good CO figures,
> running smoothly but a bit shaking?) and set it better afterwards?
>
>
> On the front brakes side the DPO mounted the springs at the outer side and
> you
> can guess what happened to the shoes after a while...
> For the front shocks, the intial test showed that they are slightly under
> the
> damping limit. Taking  a shortcut I ordered new ones from Angloparts.
>
> Richard, waiting to be roadworthy.
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