[Fot] SU oil/refurbishing race suit?

[John Styduhar]

I found the opposite response with my CD175 Strombergs.  If the piston
rises too quickly the venturi effect is reduced and adequate fuel is not
drawn through the jet causing a lean mixture.  I use marvel mystery oil.


On Tue, Nov 24, 2020 at 3:19 AM Rocky Entriken via Fot <fot at autox.team.net>
wrote:

> Re Oil:
> I once did a race at Woody Creek Raceway, Aspen, CO (8000 feet) and could
> not get the car to rev over 5000 rpm. A friend diagnosed the problem ...
> got out his wire cutters and snipped the posts off the rods in the SU caps.
> Never had a problem again!
>
> He about gave me a heart attack when he did it. Thing is, the purpose of
> the oil in the SUs is to retard the piston going up and down, mostly up. It
> was explained to me, you don’t WANT to retard the carb piston on a race
> engine. You hit the gas you want it WOT. RIGHT NOW! Street car, sure. Race
> car, no.
>
> But a tip: Clean the inside of the carb, piston & cylinder, regularly.
> Before each race. Brakleen. Fuel residue will gum it up if you don’t.
>
> --Rocky
>
> *From:* Henry Giffin via Fot
> *Sent:* Tuesday, November 24, 2020 12:58 AM
> *To:* fot at autox.team.net ; fot-bounces at autox.team.net
> *Subject:* [Fot] SU oil/refurbishing race suit?
>
>
> FOTs, I have two questions for the knowledgeable ones.
>
>     Do you use light oil in your SUs on your racing engines?  I have heard
> both sides of this.  I have not been using any oil, but have heard from
> friends I should be.
>
>      A number of years ago when my son-in-law started racing we sent my
> old racing suit to someone to be refurbished.  It came back in great
> condition.  My current suit could use some work.  We lost the name of the
> company who did the work.  Can anyone recommend a source for refurbishing
> my suit?
>
>      Thanks, Hank
>
>
>
> Hank Giffin
>
> 757-375-1491
>
>
>
> ------------------------------
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