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May 6, 2023 | 07:20 PM

#21

John Harper

HDF Community Team

Joined: Dec 2011

Posts: 8,591

Likes: 4,021

From: San Diego, CA

Quote:

Originally Posted by Rob Roy's Revenge

V-Power is 99 RON.

Good Lord, good petrol and great Scotch. Sounds like Heaven.

John

May 6, 2023 | 07:38 PM

#22

Madnss

Grand HDF Member

Joined: Dec 2012

Posts: 3,782

Likes: 1,202

From: river

What’s the timing set at?

May 6, 2023 | 11:54 PM

#23

rocketnorton

Tourer

Joined: Mar 2015

Posts: 421

Likes: 249

From: surrey bc can

Quote:

Originally Posted by OCSpringer

This comment made me remember that I am running all 10 disks in my exhaust. I am going to start removing disks and see if I can tune the ping out on the exhaust end. The more disks the more airflow so 180 is too lean and 185 is too rich I can see if removing some disks richens it up enough.

Maybe tomorrow I will give that a shot. On my way up to the flat track races in Ventura tonight.

i had 20 + open cap on my supertrapp
s&s e, 29.5 & 72
565 cams
10 choked it...
im @ sea level, too

May 7, 2023 | 06:18 AM

#24

Andy from Sandy

Seasoned HDF Member

Joined: Sep 2017

Posts: 12,254

Likes: 4,946

From: England

Quote:

Originally Posted by John Harper

Good Lord, good petrol and great Scotch. Sounds like Heaven.

John

We use a different scale so 99 here is like 93 with you.

What most use here is 95 which is like your 91. We don't go lower.

What might be confusing is the pumps in America might show the MON number of 87 but a pump number of 91.

Last edited by Andy from Sandy; May 7, 2023 at 06:27 AM.

May 7, 2023 | 08:09 AM

#25

John Harper

HDF Community Team

Joined: Dec 2011

Posts: 8,591

Likes: 4,021

From: San Diego, CA

Quote:

Originally Posted by Madnss

What’s the timing set at?

Yes, I had to dial my 2000i back about 2* per Hammer instructions. The softest curve on the 2000i throws in 30* total advance, and Hammer said no more than 28, so you have to retard 2*, about the width of a line drawn with Sharpie (at least I did) to mark plate position.

John

Last edited by John Harper; May 7, 2023 at 08:10 AM.

May 7, 2023 | 08:48 PM

#26

OCSpringer

HDF Community Team

Joined: Aug 2019

Posts: 1,847

Likes: 1,948

From: Santa Ana, CA

Quote:

Originally Posted by rocketnorton

i had 20 + open cap on my supertrapp
s&s e, 29.5 & 72
565 cams
10 choked it...
im @ sea level, too

It turned out I had 17 disks in there and am running 45/175, so 1 size up from stock on both the pilot and main. I went down to 12 disks and the pinging stopped and the hesitation came back a bit and the plugs looked rich. I added 2 more disks back and I didn't get any pinging, even without octane booster, but there is still an slight hesitation if you hold wide open throttle for a bit. I may retard the timing a bit per John's suggestion and see where that lands me but as of now it's the best this bike has run so far.

Last edited by OCSpringer; May 7, 2023 at 08:52 PM.

May 8, 2023 | 06:31 PM

#27

OCSpringer

HDF Community Team

Joined: Aug 2019

Posts: 1,847

Likes: 1,948

From: Santa Ana, CA

Per John's suggestion retarded the timing 2 degrees or so and it made the bike hesitate again at WOT but the bike really woke up. Night and day. I threw all the disks I hade (18) on the supertrapp and no more hesitation and the bike really, really woke up. Still pings a little if you hold wide open throttle but that's without octane booster. But to be honest it pings way less than it ever has before so I am gonna scrap the octane booster and just ride it as is. I may try and find 2 more disks to throw on the supertrapp as well as it will hold 20 max.

OP sorry for hijacking your thread but I guess we were still kind of talking about octane booster.

Last edited by OCSpringer; May 8, 2023 at 06:32 PM.