Laydown Enduro with Sudam131 anyone?

[RAFellows]

Anyone running a Buller Billet Sudam131 Open in a laydown Roadrace kart? I’m moving from an open K35 to a Sudam131 and could use some pointers on jets, flex, pipe, gearing, etc.

 

[Chris Cooper]

Anyone running a Buller Billet Sudam131 Open in a laydown Roadrace kart? I’m moving from an open K35 to a Sudam131 and could use some pointers on jets, flex, pipe, gearing, etc.

What tracks ?

 

[RAFellows]

What tracks ?

PNW area: Pacific Raceways, Portland International, Ridge Motorsports Park, Oregon Raceway Park. All long road courses.

 

[RAFellows]

My 150 open kart with the K35

 

[moebiusgold]

What are you going to do with the K35?

 

[RAFellows]

What are you going to do with the K35?

Sell it eventually, either this winter or after start of 2024 season.

 

[rainman]

You are gonna need a huge tank if running a stroker Sudam on a laydown. Gas or alky?

 

[RAFellows]

Alky. Local roadraces are 20 & 25 minutes long, rolling start. I was able to go 45 minutes on alki with the K35, what's you estimate for a stroker Sudam on Alki, how many gallons? I'll find out on the 1st practice day but your advice will help.

 

[rainman]

Alky. Local roadraces are 20 & 25 minutes long, rolling start. I was able to go 45 minutes on alki with the K35, what's you estimate for a stroker Sudam on Alki, how many gallons? I'll find out on the 1st practice day but your advice will help.

I can just tell you on dirt ovals I had 2 tanks on my chassis, like 3 gallon. I know 1 1/2 gallon wouldn't make it through a 10 to 15 min race on a dirt ovals if using dual Buller carbs or a big single carb. On a big track I doubt you can even make it with 2 gallons of alky and you don't want to find out when you run out of gas on a long straight and seize the engine. Never ran the stroker Sudam on my laydowns or my sprint enduro though. If I would I would run gas.

 

[RAFellows]

I can just tell you on dirt ovals I had 2 tanks on my chassis, like 3 gallon. I know 1 1/2 gallon wouldn't make it through a 10 to 15 min race on a dirt ovals if using dual Buller carbs or a big single carb. On a big track I doubt you can even make it with 2 gallons of alky and you don't want to find out when you run out of gas on a long straight and seize the engine. Never ran the stroker Sudam on my laydowns or my sprint enduro though. If I would I would run gas.

Thanks Rainman, I’ll boost my tank capacity. A Question: why didn’t you run a stroker Sudam on your laydown enduro?

 

[rainman]

Thanks Rainman, I’ll boost my tank capacity. A Question: why didn’t you run a stroker Sudam on your laydown enduro?

I only used my Susan for dirt ovals (UAS). I have just sold it. On my laydowns I run a Yamaha pipe though I have a bunch of 100 cc Reed's I could use. Keeping a good stroker Sudam is not cheap and long WKA enduro races wouldn't have helped.

 

[Komet99]

There was a dude several years ago that had a fn fast 100 open laydown. He had to start the race with 8 gallons to make 45 min.

 

[RAFellows]

There was a dude several years ago that had a fn fast 100 open laydown. He had to start the race with 8 gallons to make 45 min.

Thanks for real data. Based on this 5 gal should just barely make it 25 minutes. Appreciate the reply.