ESE's works engine tuner

[TZ350]

The exhaust you posted pictures of, according to you, with the plenum, makes 20hp, but with-out makes 17.

That is a head scratcher for me.

Do you have any clues as to why?

Attachment 222276

"The exhaust you posted pictures of, according to you, with the plenum, makes 20hp, but with-out makes 17."

Actually it's 20 and 18, ...... still a lie repeated often enough I suppose........

"That is a head scratcher for me. Do you have any clues as to why?"

Could it be, 20 with the Plenum, means it's working .......

There is always someone who needs it spelt out for them.........

[Buckets4Me]

All very interesting.

Try not to take offense here TeeZee, but the confusing thing for me is, previously you tell us you had 21 Horsepower WITHOUT the Plenum, now you have 20 with, and, what is it, 17 without?

Why is that?

Attachment 222276

"The exhaust you posted pictures of, according to you, with the plenum, makes 20hp, but with-out makes 17."

Actually 18 and 20

"That is a head scratcher for me. Do you have any clues as to why?"

Could it be the Plenum....

or the fact that you are choking it with a 24mm carb ?

come on and wake up will ya

[Spearfish]

or the fact that you are choking it with a 24mm carb ?

come on and wake up will ya

Is 24 the largest allowed?

Is there any restriction on injection?

[F5 Dave]

equiv to 24mm. Read the rules,there's plenty of links about or just MNZ site.

[bucketracer]

Is 24 the largest allowed?

Is there any restriction on injection?

Section 24.2.4 of the MNZ rule book.

F4 2 stroke engines over 104 cc are restricted to carburetion equivalent to a single 24mm carburettor.

Definatly 24mm carb and do the words "restricted to carburetion" really mean to exclude fuel injection?

[Slingshot]

Section 24.2.4 of the MNZ rule book.

F4 2 stroke engines over 104 cc are restricted to carburetion equivalent to a single 24mm carburettor.

Definatly 24mm carb and do the words "restricted to carburetion" really mean to exclude fuel injection?

The important bit is "equivalent" - so you'd be pushing shit uphill if you tried to use a 30mm throttle body.

[speedpro]

I drafted that rule and fuel injection was not considered at the time. The wording does inadvertantly exclude fuel injection.

[bucketracer]

...........have you thought about putting a clear cover over the plenum chamber and seeing if you can see any interesting fuel/air movements inside the chamber? Could give some real insight as to how the air is moving around inside there and I assume you would be able to see it as the air will be mixed with fuel which will give it a misty look? -Sketchy

In a couple of weeks we are going to have another go at this, and will try this idea and one or two others suggested to Dad by Yow Ling and Speedpro.

Old Youtube vids of the plenum engine in action........

Very easy startup http://www.youtube.com/watch?v=YxiEo8cgopg

Power Run up the drive http://www.youtube.com/watch?v=p4ef-WUO1Qs

Not exactly the same setup as the vids, (different pipe) but a dyno graph of the engine with ordinary carb setup giving 18rwhp and with the plenum like in the vid's and that gave 20rwhp in back to back tests showing the plenum idea definitely works and probably has much more potential yet for TeeZee to wring out of it.

Attachment 222347

The engine was running a pipe I designed myself and I am grateful to Dad and the rest of the Team for letting me have a go and paying for the dyno time to test it.

Its one of those funny things, the pipe isn't a keeper but it's still a success in it's own way and will be joining the karate suit and acoustic guitar in the cupboard as mementos of the times I am most proud of.

My chamber and plenum, dyno graph is especially pleasing to have, to hang over my bed, as on my very first try I was able to equal Bavaria's best, or the best we have seen anyway, and I have the proof.

Totally chuffed, and will always be reminded of my success whenever I hear talk of karate suits and acoustic guitars and probably be inspired to show my graph off again.......... actually I might just show it of from time to time just for the heck of it anyway......

Thanks TeeZee and the Team.

[bucketracer]

The important bit is "equivalent" - so you'd be pushing shit uphill if you tried to use a 30mm throttle body.

Yes, good point, and I agree, sorry, I should have made it clear I was thinking of an equivalent 24mm throttle body.......

[SS90]

Its one of those funny things, the pipe isn't a keeper but still a success and will be joining the karate suit and acoustic guitar in the cupboard as mementos of the times I am most proud of.

My chamber with the plenum, dyno graph is especially pleasing to have and hang over my bed, as on my very first try I was able to equal the Bavarian best and have the proof.

Totally chuffed, and will always be reminded of my success whenever I hear talk of karate suits and acoustic guitars and happily show my graph off ..........

.

Im flattered to be your idol Bucketracer.

Any chance of a video of that pipe on the dyno?

I am glad your are proud of your work.

Are you able to explain why the old cylinder and exhaust made more power with out the Plenum than the new cylinder and pipe with the plenum, but 2 HP less with out?

Easier to follow... Using TeeZees data

Standard cylinder, piston, head, just raise compression, and RG250 chamber

17 HP

Modified ex. Port,squish head,single ring piston,A.G. Bell Pipe
21HP

same as above, with Plenum (Hard to decipher Teezees data), but I think....

20hp

Cylinder by Thomass and you, your pipe, Plenum, various precious metals...

21HP

same as above, no Plenum

18HP

See what I mean?

The new cylinder makes less power (2hp) than the old with out the Plenum, but it makes essentially the same, with the Plenum.

That makes no sense.

I can't work out why, or how that would be.

It's your work, so best to ask you I suppose.

if you want to try and run with the Baverians, then I will ask the same questions they would ask you if you presented this data to them.

I am sitting in a room with 3 Baverians, and these questions are being asked by them, just so you know.

[bucketracer]

I am glad your are proud of your work.

Yes I am proud of my work.

The rest of your post is a bit rambily, it would be smarter if you could explain how TeeZee's plenum idea tops your best efforts to date........

[SS90]

Yes I am proud of my work. The rest of your post is a bit rambily but maybe you can explain how TeeZee's plenum idea tops your best efforts to date........

Don't change the subject.

[Buckets4Me]

Im flattered to be your idol Bucketracer.
.

I dont think he was saying you where his Idol

[Buckets4Me]

Don't change the subject.

why not your good at it

[bucketracer]

Don't change the subject.

No...... your the one that keeps talking about the plenum and dyno graphs

Here is yours and mine to help you,......... now why is the plenum better than the graph of your best efforts?

I think we will be ignoring you again until you can say something sensible.