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Blowers, Gas & Altitude ?

J

Jimbemotumbo

Full Member
Joined
Jun 23, 2004
Messages
49
Location
Rocky Mountains
Here in Colorado there is no 93 octane. We have 89 premium
(Our regular is 85, mid grade is 87).
What does this mean for a potential blower install? Based on what I've read in this excellent forum, it would seem detonation is a given.
I'm not looking for huge gains or racing. Just a nice kick in the seat without having to mod the heck out of everything ... Oh, and the occasional ricer-boy dusting!

Thanks to all - really love this site!
 
not absolutely sure i have the answer you are searching for. one of the more experienced in that area will read this soon. i do however believe that you are correct. detonation seems likely without the higher octane fuel when using a blower.

why is it Colorado has no 93 Octane, or 87 Octane? here on the east coast, and any other place i have been as far as Texas to the west, there is 93 Premium, 89 Mid-Grade, and 87 Regular. on rare occasions i have seem 94 Octane and Cam2 (102 or 105? ???).
 
I believe its because of all the eco conscious hippies in Colorado (just kidding, I love it out there)

But actually, I think the extra octane is not needed due to the altitude. I'm sure an someone who really knows what their talking about will confirm
 
Hi there,
I was not able to tell what part of the State you were from, so I went with the average. The average elevation for the state is 6800 feet. Calgary is at 3700 feet. Premium here (and I think much of the country) is 91.
I'm running a whipple and the sticker that came with it said that 91 was the grade to be used. On days like today, 33 degrees C / 96 degrees F, I wish we had 93 as I do getr the slightest knock under HARD throttle.
My guess is that 89 would be OK, and if needed you could dop in a small amount of octane boost.
You might want to work your way up to a blower by upgrading the air intake, exhaust and maybe headers (all needed to get full pop from a SC) and then decide if you still want/need one?
 
Thanks much. I'm at 5800 feet and driving in this state can go anywhere from 4000 to 12000 in a single trip.

The suggestion to do the basic mods first is a good one. I plan to do the intake/exhaust and tranny upgrades before considering forced induction of any kind.

I'm not greedy either. A nice reliable 80-100 hp would make me real happy :love:
 
I think you should talk to a member who goes by the name of "kodiakz". He's got a magnuson RADIX on his truck and I believe he lives in CO.
 
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