Crazy header ideas?

DeathBySnuSnu · Posted: Sat Dec 13, 2014 8:37 am Post subject: Crazy header ideas?

Trying to figure out a header for my scooter.
I don't have any place to put a normal merged header.
I am thinking anything will be of a better tune than my current 4 straights.

Not much area to cross over with pipes.
If I could get one pipe around the flywheel end and one around the pulley end I am think of a split header-ish contraption.
Joining 2 and 4 into a merge.
Joining 1 and 3 into a merge.

Sort of half Tri Y
Yes I do know it ain't ideal.
But i am thinking it may be better than unequal length open primaries.

DeathBySnuSnu · Posted: Sat Dec 13, 2014 8:49 am Post subject:

Here is an old pic so you can see the area I have to work with.
The straights have serves me well for the past couple decades.
But I am looking for a better tuned exhaust to go with my mega squirt fuel injection I am setting up now.

Image may have been reduced in size. Click image to view fullscreen.

raul arrese · Posted: Sat Dec 13, 2014 9:06 am Post subject:

I built this for my ragtop , im not racing anyone with this car so im not sure about performance but it works for me and my application .
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DeathBySnuSnu · Posted: Sat Dec 13, 2014 9:21 am Post subject:

Thanks for the reply.
Yes something along those lines. But two seperates.
Thinking if I go 180 from each other I can get half a tune.
I can't go under engine. My oil plug is 3-1/2" off the ground.

clonebug · Posted: Sat Dec 13, 2014 10:40 am Post subject:

DeathBySnuSnu · Posted: Sat Dec 13, 2014 10:58 am Post subject:

Independent throttle bodies.

43mm Mikuni
320 cc injectors

the rubber hoses on the far side you can barely see
Are the original map sensor and idle air connection points.

Anvil · Posted: Sat Dec 13, 2014 11:43 am Post subject:

mark tucker · Posted: Sat Dec 13, 2014 11:58 am Post subject:

looks great,paring #1&3 and 4&2 may of worked a little better....but ...that all depends on oh soomany things,like driving style,engine size,rpm range,camshaft etc. very nice work. Ive been thinken on a over the top of the tranie exhaust like the mid mounted buggys use,and doubble walling the exhaust after the merge for heat to the car.....well in my head anyway. as for the scooter I would pair 1&3 THEN 2&4 into that. with free flowing muff. or 1&3 with muff&2&4 with muff onthe other side.or duel it.

DeathBySnuSnu · Posted: Sat Dec 13, 2014 12:10 pm Post subject:

Yeah that is what I am thinking.
1 and 3 out one side
2 and 4 out the other
Prob never have a muffler on it.
Been running it since 81 without a muffler. ..lol

bluebus86 · Banned Joined: September 02, 2010 Posts: 11075

bluebus86 · Banned Joined: September 02, 2010 Posts: 11075

DeathBySnuSnu · Posted: Sat Dec 13, 2014 1:05 pm Post subject:

Well yeah......

The baby girls first yard cart.
This was a few years ago.
Girlie is 11 now.
She now races oval dirt track.
Getting pretty good at driving sideways.

Here she is getting scaled out before the big race.

DeathBySnuSnu · Posted: Sat Dec 13, 2014 1:07 pm Post subject:

Winner winner

Howard 111 · Posted: Sat Dec 13, 2014 1:46 pm Post subject:

What a proud look on her face!!! Very Happy

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mark tucker · Posted: Sat Dec 13, 2014 2:18 pm Post subject:

my brother just got back from daytona where he bought a "harly chooper" the rear tire is almost a foot wide,well it might be wider than a foot. it's new, no engine or trans.......first thing i thought of was my 2332 in it woukld be fun. (woukld= would, could....will be)

Busstom · Posted: Sat Dec 13, 2014 2:41 pm Post subject:

What's the history of that little taildragger in the background?

Did that come from an amusement park ride or something?

DeathBySnuSnu · Posted: Sat Dec 13, 2014 2:48 pm Post subject:

Yep.
It is pretty tough.
The 2110 I always estimated at 160hp. That may be a little generous with the open primaries I have always had.
It handily performs with a 100 hp crotch rocket that weighs almost 200 lbs less.
It is going back a 2286. 86 x thick92.
I had been fishing for cam suggestions. About decided on a fk10.
With the lack of a true header I am thinking I can not handle a duration over 270.

DeathBySnuSnu · Posted: Sat Dec 13, 2014 2:51 pm Post subject:

The plane is a Pitts special.
A real bi-plane kit "experimental" plane.
Gonna use it for a sign.

Busstom · Posted: Sat Dec 13, 2014 3:16 pm Post subject:

Cool, I suspected it was a real plane, but MAN it's short (as were Pitts'). It almost looks like the gear have been moved back. If I recall, Pitts take some skill not to ground loop!

clonebug · Posted: Sat Dec 13, 2014 3:25 pm Post subject:


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