info on running FF in Mexico

[swiftdrivr]

It looks like my Swift is going to Mexico, but the buyers have questions I don't know the answer to. If anyone has some information, I'd appreciate hearing from them
.
Question one; Will carb jetting need to be adjusted going from the southeast [VIR, Roebling} to racing in Mexico City [2000m]

Question 2: Apparently they only have 98 octane fuel. Is this a problem with the Kent engine?

Question 3: They run on Toyo tires, but my buyers don't know anything about appropriate tire pressures or toe and camber. These are apparently street tires. Anybody run these?

Question 4: Any info on Gearing for the tracks in Mexico. The F1 circuit looks like it will need a one over at least for 4th, but I am totally guessing. Anyone ever run down there?

Many thanks for the help

[Fred Michael]

Take this with a grain of salt but
1. Absolutely
2. It will be fine
3. No idea
4. More than likey gearing will not be as tall as you think because the altitude will limit the engine, although the thin air may reduce drag enough to make up for some of it

They will need to talk to some locals even if they are in different classes

[TimH]

The Canadians run their Kents on Toyos and pump gas. I should think jetting would be different than U.S. avgas at sea level.

We like about 2.5 degrees negative camber on our Toyos, run pressures 17-18 psi. About 1/4 inch toe out at the front and toe in at the rear. YMMV, but that's a good place to start.

[Lotus7]

The Canadians run their Kents on Toyos and pump gas. I should think jetting would be different than U.S. avgas at sea level.

We like about 2.5 degrees negative camber on our Toyos, run pressures 17-18 psi. About 1/4 inch toe out at the front and toe in at the rear. YMMV, but that's a good place to start.

agreed, years ago we ran cdn FF on various brand street radials... they all have stupidly stiff sidewalls, so pressures were lower than typical; also to get any heat in them we ran LOTS of toe out and toe in. YMMV

[Larry H]

There are several DB1s running in Mexico on Toyo tires. The FF series has a Facebook page “Club Vintage Formula Ford Mexico”, your buyer can ask the members.

[alangbaker]

The Canadians run their Kents on Toyos and pump gas. I should think jetting would be different than U.S. avgas at sea level.

We like about 2.5 degrees negative camber on our Toyos, run pressures 17-18 psi. About 1/4 inch toe out at the front and toe in at the rear. YMMV, but that's a good place to start.

One quarter inch?

Total toe I'm assuming, but still: that seems like an awful lot.

[swiftdrivr]

As always guys, many thanks for the information.

[TimH]

Total toe I'm assuming, but still: that seems like an awful lot.

Yes it is, but it works. It probably hurts straight-line speed but our tracks are pretty tight anyway.

[Lee Johnson]

The Canadians run their Kents on Toyos and pump gas. I should think jetting would be different than U.S. avgas at sea level.

We like about 2.5 degrees negative camber on our Toyos, run pressures 17-18 psi. About 1/4 inch toe out at the front and toe in at the rear. YMMV, but that's a good place to start.

Tim H --

Are you defining toe out at

A) rim diameter or at tread diameter?
B) total or per side?

B). of course, makes the biggest difference (factor of 2!).

[billtebbutt]

I "think" Toyo publishes some info for these tires in terms of optimal pressures, tire temps etc. I've not seen it actually, but have heard tell of it.....

cheers,
bt

[TimH]

Tim H --
Are you defining toe out at
A) rim diameter or at tread diameter?
B) total or per side?

Total, and actually at the length of the toe plate slots (don't have any right now to tell you that figure, but it's roughly 23", so maybe 0.6 degrees for 1/4 inch).

[TimH]

I "think" Toyo publishes some info for these tires in terms of optimal pressures, tire temps etc. I've not seen it actually, but have heard tell of it.....

Given that the tires were made for street sedans of more than a ton I'm not clear what those optimums would mean for us.