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.
Tuning for altitude
Moderators: notoptoy, S Allen, Solex68
- bikermike
- Site Supporter
- Posts: 1761
- Joined: Wed Jul 06, 2011 4:06 pm
- Location: Denver Area, CO
- Model: 1500/1600
- Year: Low Windshield-64-67.5
Tuning for altitude
-Mike
1967.5 SPL311
1972 240z / L28
2003 BMW 525i Touring
2014 Jeep KL
1967.5 SPL311
1972 240z / L28
2003 BMW 525i Touring
2014 Jeep KL
- keith0alan
- Roadsteraholic
- Posts: 905
- Joined: Wed Sep 22, 2004 10:07 am
Re: Tuning for altitude
SUs compensate for altitude pretty well. Normal adjustment should do it.
- sfdaugherty
- Roadster Fanatic-Site Supporter
- Posts: 929
- Joined: Tue Jul 08, 2008 7:22 pm
- Location: Albuquerque, New Mexico
Re: Tuning for altitude
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.
69 2000 SRL311-10088 (Type 4 Solexes)
68 SR20DE SPL311-18735 (SR20DE S15 Autech)
68 2000 SRL311-01179 (Restoration underway)
68 1600 SPL311-20462 SOLD! After 41 years in the family
68 SR20DE SPL311-18735 (SR20DE S15 Autech)
68 2000 SRL311-01179 (Restoration underway)
68 1600 SPL311-20462 SOLD! After 41 years in the family
- bikermike
- Site Supporter
- Posts: 1761
- Joined: Wed Jul 06, 2011 4:06 pm
- Location: Denver Area, CO
- Model: 1500/1600
- Year: Low Windshield-64-67.5
Re: Tuning for altitude
Sounds good. Thank-you both.
-Mike
1967.5 SPL311
1972 240z / L28
2003 BMW 525i Touring
2014 Jeep KL
1967.5 SPL311
1972 240z / L28
2003 BMW 525i Touring
2014 Jeep KL