Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

VAF on Twitter:

Prev Previous Post   Next Post Next
Old 10-29-2021, 03:24 PM
togaflyer togaflyer is offline
Join Date: Apr 2013
Location: Fl/Ga
Posts: 888
Default G100 UL

I did some reading on Gami G100UL fuel that is working its way as a replacement for the 100 LL. This company has spent years developing a potential direct replacement for 100LL fuel. Reading their testing, they utilized a number of engines including a Turbo Continental TIO 550 with 8.7 to 1 compression ratio. This got me thinking about our experimental engines. I run 9:1 and I know there are engine that run up to 10:1, so I sent a question to Gami regarding how their fuel would work in higher compression engines. I received a response the same day, which I did not expect. Here is the answer received from Gami…….

The "lean rating" octane performance of the G100UL exceeds that of 100LL, so any engines that can run on 100LL will run well on G100UL.
That being said, the "rich rating" octane performance is WELL above that of 100LL (160+ octane equivalent). I don’t know what the limit of detonation-free compression ratio would be when full rich. That limit might be hard to find using currently available engine parts.


Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 10:58 AM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.