Stinger Length?



HumanPerson

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Joined
Oct 12, 2019
Messages
1,921
Well the crmachine exhaust flange thing cracked, so i took the SBP expansion chmbr flange and used that.
Guess what, lol, it works better than the crmachine flange thing.
That being said, the crmachine header flange lasted a while.

I think the cold and heat screwed the pooch.

I modified the SBP flange to be at sort of an angle then when it enters the 1 1/8" street sweep fitting it fit perfectly.

Took it for a ride and NO leaks! :)

It is only due to you, those which have helped me and guided me through this that i was able to get to where i am at.

Thank you for the Friendship and the Teachings.

Ride Safe Friends! :)

HP
 

Street Ryderz

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Joined
Oct 14, 2016
Messages
3,637
I think i should shorten the length of the intake.

Is there a prefered length and how short are the shorty intakes?
It's working well as it is so I wouldn't! The shorty intake is very short like 2" and won't yield any gains other than air filter clearance.
 

GreasyChris

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Jan 3, 2019
Messages
1,379
This is probably one of my favorite threads. There is a ton of valuable information here by very experienced builders. A big thanks to everyone who contributed to it. 👍👍👍
 

GreasyChris

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Joined
Jan 3, 2019
Messages
1,379
So today i used this https://www.summitracing.com/parts/pte-h7000
to make the header part going from the exhaust flange to the first divergent cone on the expansion chamber.

Alot better flow i guess. Seems to idle smoother and respond to the throttle a bit better.

The hill pulling power has increased quite a bit. (y)

Ya'll are amazing Humans :bowdown:
This is what I've been using. They're stainless, super smooth and come in whatever size you need and in 45° and 90° elbows.
15826512516072087492813851513292.jpg
 

HumanPerson

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Joined
Oct 12, 2019
Messages
1,921
Would have been perfect for the flange.
had to make my own step down from pipes the welder had and some JB weld :p LOL

It all worked out though, in my redneck backyard workshop :D

All i really notice is the get up and go and the power, pulling up hills, gets better each time, which is what i am after.
Seems as though i am getting to the point that it wants to be as far as the power.

Speed is still around 35'ish with the i think the 44th or the 40th rear sprocket lol i forgot which one is on there o_O
I guess it would go up in speed with the 36th sprocket, just don't need speed :)

With peddling twice/three times to get going, it takes off and gets up to 30 really quick now :love:


Thank you for that link Chris, i'll look at the US ebay and see about those, seems smoother than my fabbed step down :p
 

Chainlube

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Joined
Jan 5, 2020
Messages
1,990
So, looks like for right around the $100 mark I could make a pretty nice expansion chamber.


This is what I've been using. They're stainless, super smooth and come in whatever size you need and in 45° and 90° elbows.
View attachment 93034
 
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