Datsun Roadster Forum-311s.org

My Roadster and Z now reside at 5600 feet in Colorado. Since they came off the truck I haven’t had a chance to tune them. Previously they lived pretty close to sea level.

I expect my weekend cruises will be at higher elevations rather than lower.

Would going through the normal tuning procedure be sufficient or should I be looking at different needles for the SUs?

Any other advice for altitude?

Thanks.

SUs compensate for altitude pretty well. Normal adjustment should do it.

Ztherapy does have an option when rebuilding carbs for high altitude (over 6000 ft is the definition of high altitude if I recall). It is a needle change. I have a set of those still in the box from ztherapy waiting for the time to get my 68 2000 back on the road. My house is about 6100 ft and the altitude at the Albuquerque airport is about 5200 ft so I'm close to your altitude. I have run stock SUs at this altitude and, Keith is correct, the SUs compensate pretty well for altitude.

Sounds good. Thank-you both.