Marcos Maniacs

Hi Dave,

The forecast for the weekend has temperatures in the high 50s so I wouldn't
worry.

My carbs are Solex 45s, which are similar to Webers. I'm not sure if your
question on tuning refers to jetting or balancing. However, I had extensive
correspondence back in the early 80s with Andre (don't immediately recall
his last name) in Sweden who had done A LOT of tuning on his 3 litre Volvo,
to the extent of boring it out and changing the crankshaft profile,
resulting in 3.6 litres. He also used Solex carbs so he sent me a number of
recommendations for the jets and choke tubes for them. When I checked, my
carbs conformed to one of his recommendations, which was fortunate because
Solex parts are very hard to come by. It would appear that the rebuild kits
are only available through a few places in England. I've been told that
Weber jets would fit in a pinch, but it hasn't been necessary to check that
out.

Balancing them is a bit tricky, but it helps to have an airflow meter which
I use to equalize the three carbs. I then use a colourtune kit to balance
the mixture at each choke. That part is a bit tricky because if I follow the
colourtuune instructions exactly, the mixture ends up being too rich. I
found that out when I  took a run up the highway following a tuning session
and then pulled a plug to see the result. I believe  the colour of the plug
is a truer indicator so I leaned out the mixture until the plug colour was
correct. I need to repeat the exercise now I've rebuilt the carbs because
the idling speed went up quite a bit. That might be because the middle carb
had screw plugs missing from both choke tubes. The holes were underneath
between the choke tube and the butterfly, and I haven't a clue how long the
plugs were missing. Fortunately I'd kept an old set of idle screws I'd
replaced 15 years ago which had the same thread size. I just shortened them
and they fit perfectly.

I hope that helps answer your question. If you need more details, I'll be
happy to oblige on Sunday. I guess you'll be driving a TVR. See you then.

Regards,
        Paul

-----Original Message-----
From: Dave Barton [mailto:dbarton62@...]
Sent: April 16, 2003 6:27 PM
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] Re: Door waist seal



Hi Paul
 I thought Ron was joking about the weather but it doesn't look good 
right now..........how do you find the Webers for tuning, I just put 
triples on my TVR ,I haven't road tested yet but expect to have to 
fiddle with it a bit
    Cheers Dave






--- In MarcosManiacs@yahoogroups.com, pauldransfield@i... wrote:
> Hi Dave,
> 
> Yes, I'll have the Marcos at the show. I rebuilt my triple carbs 
over the
> winter and got everything back together last weekend after waiting 
weeks for
> the snow to melt around my way. I don't really understand why but 
there is a
> very noticeable improvement in performance. The service kits mainly
> consisted of gaskets and needle valves, but the car definitely has 
a lot
> more oomph. I'm really looking forward to the outing.
> 
> You probably saw Ron McLeod's note, so look out for a light blue 
Mantis and
> a Porsche tangerine coupe. See you on Sunday.
> 
> Paul Dransfield
> 3 litre Volvo
> 
> 
> -----Original Message-----
> From: Dave Barton [mailto:dbarton62@y...]
> Sent: April 15, 2003 5:43 PM
> To: MarcosManiacs@yahoogroups.com
> Subject: [MarcosManiacs] Re: Door waist seal
> 
> 
> Hi Paul
>   Will you have the Marcos there?.......there are going to be a few 
> TVR's also........I will try and get there before 11
>         Cheers Dave #5577
> 
> 
> --- In MarcosManiacs@yahoogroups.com, pauldransfield@i... wrote:
> > Hi Dave,
> > 
> > You mentioned that you were going to the Ancaster British car 
show, 
> which is
> > this Sunday, and I thought I'd let you know that I'll be there 
from 
> around
> > 9:30am to 11-ish. It's Easter Sunday and my wife's family always 
> make a big
> > thing about getting together so I gotta be there too. Hope to see 
> you on
> > Sunday.
> > 
> > Regards,
> > 
> > Paul Dransfield
> > 3 litre Volvo
> > 
> > -----Original Message-----
> > From: Dave Barton [mailto:dbarton62@y...]
> > Sent: April 14, 2003 6:21 PM
> > To: MarcosManiacs@yahoogroups.com
> > Subject: [MarcosManiacs] Re: Door waist seal
> > 
> > 
> >   
> > 
> > 
> > Good tip Don
> >     Just got the shell back from the upholsterer......will be 
> > tackling the reassembly in the next few weeks........by the way I 
> > have finally figured out my digital camera or at least my 12 year 
> > daughter did , so I will post some decent pics soon.
> >    Cheers Dave #5577  
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > --- In MarcosManiacs@yahoogroups.com, "Don Lattimer" 
> > <donlattimer@p...> wrote:
> > > I finally tackled the door window seal replacement.  It's the 
one 
> > > that is on the outside of the door glass that is almost 
> impossible 
> > > to change without 3 hands(or one arm that's REAL long).
> > > 
> > > The seal that fit is from the Triumph Spitfire.  About 4 inches 
> > have 
> > > to be removed from each end and then the metal strip that the 
> > rubber 
> > > is bonded to has to be slit so that the seal will conform to 
the 
> > > curve of the frame.  Not too bad looking after install.  Just 
> take 
> > > your time and keep testing the fit as you trim it.
> > > 
> > > Don Lattimer
> > > #3m5759
> > 
> > 
> > 
> > To unsubscribe from this group, send an email to:
> > MarcosManiacs-unsubscribe@yahoogroups.com
> > 
> >  
> > 
> > Your use of Yahoo! Groups is subject to 
> http://docs.yahoo.com/info/terms/
> 
> 
> 
> To unsubscribe from this group, send an email to:
> MarcosManiacs-unsubscribe@yahoogroups.com
> 
>  
> 
> Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/



To unsubscribe from this group, send an email to:
MarcosManiacs-unsubscribe@yahoogroups.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/