Can't you use the adjustable jets from the ZS carbs on a TR4?
Bob Kramer
rkramer3@austin.rr.com
---- Bud R <levilevi@comcast.net> wrote:
> â??but what about the main jets."
>
>
>
> ZS jets actually are adjustable, just not easily. The depth (from the bridge
> to the top of the jet) of the jets on my 175 ZS carbs can range from 0.085 to
> 0.187 inches. I have mine set at 0.125â?? deep. Donâ??t know if 150â??s are
> the same but I suspect itâ??s close to the same.
>
> To adjust take a 3/8 inch bolt and grind it flat on the bottom. Put two nuts
> on to lock your â??depth setterâ?? bolt and then tap the jet down to a
> measured depth (with your dial indicator). To move it up tap from the bottom
> with a Honda valve guide (or similar protection) to protect the jet. Iâ??ve
> set the jets with the carbs still on the carb.
>
> 0.085 is lean and 0.187 is rich so adjust accordingly. Be precise this is not
> a big range but it can make a difference.
>
>
> Bud Rolofson
>
> Extreme Parts Racing (more than just a haircut)
>
> 71TR6 CC57365 (Good 6)
> 71 Spitfire MK IV Race Car #3
> 69 Spitfire MK III (back up FE engine/dinghy car)
> 93 Minnie Winnie Race Support Vehicle
> 77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
>
>
>
>
>
>
>
>
>
>
>
>
> On Oct 15, 2015, at 2:12 PM, Kas Kastner <kaskastner@gmail.com> wrote:
>
> > Did you check the plugs after the overheating so that you know it was from
> > fuel problems not the overheating??
> >
> > What needles are you running? How far open is the adjusting nut for the
> > mixture?
> >
> > Never be beaten by equipment.
> >
> >
> > On Thu, Oct 15, 2015 at 6:42 AM, <damys@charter.net> wrote:
> > Finally got the GT6 back together and had it at Brainerd for two track
> > days. First day still had overheating issues even with the oil cooler,
> > external octopus oiling and scirocco rad. Also had a vibration in the
> > rear.
> >
> > Then we fabricated a full rad shroud and re-did one of the 240Z rear axles.
> > Lost all but a very minor vibration that show up at around 100 MPH which
> > might just be from driving an 1800 lb car that fast.
> >
> > Cured the overheating and actually had to tape the rad and oil cooler.
> > After many laps the water was at 200 and the oil at 220. Outside temp
> > 65-70 degrees.
> >
> > Our new problem is we burned the electrodes off of number 1 and 4 plugs.
> > The other four looked a little lean, but not bad. We are running 1.50
> > Strombergs.
> >
> > It seems to me that the stock intake is starving 1 and 4.
> >
> > I've read that Kas drilled the float jets to cure starvation at high RPM's,
> > but what about the main jets. Will this cause serious bog at mid-RPM's.
> > Also would reworking the number 1 and 4 intake runners help the problem.
> > We are maxing out at 6000 RPM's.
> >
> > As for the minor vibration, we have a rebuilt, fully welded 3:89.
> >
> > Planning on Elkhart in the Spring. Any ideas?
> >
> > Thanks
> >
> > Dave and Alex Amys
> >
> >
> >
> >
> >
> > _______________________________________________
> > fot@autox.team.net
> >
> > http://www.fot-racing.com
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/fot/kaskastner@gmail.com
> >
> >
> >
> >
> > _______________________________________________
> > fot@autox.team.net
> >
> > http://www.fot-racing.com
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/fot/levilevi@comcast.net
> >
> >
>
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/fot/mharc@autox.team.net
|