ESE's works engine tuner

[kel]

TeeZee check the following link:
http://www.pro-x.com/downloads/Technical.pdf
And check Connecting rod dimensions, there you will find all details.

Now thats a great catalogue/reference.
Be careful using the TKRJ catalogue some of the dimensions are incorrect, that said their staff are really helpful and a quick to sort out any problems

[speedpro]

On testing in such a shallow area he found that he could get very measurable better results by trimming back the plug earth strap, ultimately using a side entry racing plug. The strap of a normal EGV was shielding the burn it appeared.

I've tested "J" gap plugs in a bike on the dyno and recorded noticeable power increases. Same for tapered earth electrode plugs. Even better ignition systems were worth horsepower which was a surprise. Having said that they use "MONSTER" ignition systems in blown drag race cars way beyond what's required just to light the mixture and that's supposedly because it's worth horsepower.

[bucketracer]

they use "MONSTER" ignition systems in blown drag race cars way beyond what's required just to light the mixture and that's supposedly because it's worth horsepower.

Posted before but still interesting. http://www.madsci.org/posts/archives...3778.Ph.r.html

The normal ignition takes care of the ionisation channel; then as soon as the current starts to flow, the Emot-set sends a big extra current through this channel. It looks like this: http://www.youtube.com/watch?v=7BfQuxyWN90

[TZ350]

Before I start on my Wobbly engine I wanted finish the Ex side port mods on my old air cooled engine and run it up on the dyno.

First step is to prep a new piston, I have been using a dished piston but Wob tells me they are not that great so future ones will be flat top.



The oiler holes for the exhaust bridge need plugging.



Normaly I would weld them but was persuaded to try glueing them with some super duper stuff thats as tough as shark shit.

And hey, this is Buckets, we are allowed to try new ideas.

So the were prept up with a dremmil.



And the finished result.



Then new holes were drilled for oiling the bridge between the exhaust and transfers.



The Ex/Trans bridge

[F5 Dave]

I've tested "J" gap plugs in a bike on the dyno and recorded noticeable power increases. Same for tapered earth electrode plugs. . .

I think you have to test to be sure. The same racing plug pulled out of his bike & tried in mine 5 min later in back to back comparrision with my B9EGV gave not an ounce of difference. In my old fairly low spec H100 & found the garden variety B9HS was as good as anything else. Oddly that was with a marginal MB ignition that used to limit spark plug life to about 4 meetings, the CR ignition stopped that carry on, but I'm not sure it improved power (too long ago).

[F5 Dave]

Belzona? Never heard of it, presumably higher temp spec than Devcon? I struggle to see that holding on, but would be glad to be proven wrong. That was one compromise on my old 125 that I didn't get around to plugging while I was thinking how best to do so. Bad place to lose gas through, but such tiny holes & without super high CC compression I don't know how critical.

Sub port very close to the transfer tops.

[speedpro]

I understand you can get it from Morgan Engineering and they swear by it.

[wobbly]

Here is a test I did ages ago when I was pissed at having to pay $140 for shorty RS125 plugs - and more for the cap..
The test shows 4 different 10.5 plugs in a 3 time Nationals winning 125 kart engine,and each curve is a 3 run average.
Red is B105EGV .
Lime is Denso TAE01-32 ( later Honda replacement for the NGK shorty)
Brown is NGK R6252K - 10.5 ( kawasaki 125 special)
Orange is NGK R6120A - 10.5 Shorty Iridium as sold by Honda.
The trick plug is worth a couple of Hp , this can be bought now as a normal length plug with the Iridium center and Platinum Earth as NGK R7376 for about 1/2 the price, and uses a normal plug cap.

[RDjase]

Here is a test I did ages ago when I was pissed at having to pay $140 for shorty RS125 plugs.
The test shows 4 different 10.5 plugs in a 3 time Nationals winning 125 kart engine.
Red is B10EGV and each curve is a 3 run average.
Lime is Denso TAE01-32 ( later Honda replacement for the NGK shorty)
Brown is NGK R6252K - 10.5 ( kawasaki 125 special)
Orange is NGK R6120A - 10.5 Shorty Iridium.
The trick plug is worth a couple of Hp , this can be bought now as a normal length plug with the Iridium center and Platinum Earth as NGK R7376 for about 1/2 the price.

Hi Wayne,

Hows Steve and the Shop after the Storm? Hope all is well and you had no or minor damage

Lucky you are this side of the Tasman

Cheers
jase

[kel]

Before I start on my Wobbly engine I wanted finish the Ex side port mods on my old air cooled engine and run it up on the dyno.

About time, could this be the first 30hp bucket?

[gamma500]

Wobbly, what do you think about hydroformed expansion chambers?

[wobbly]

Spoke to Steve in Cairns last night - his email is still dead, and so are most of the trees in his front yard.
They were lucky the eye hit about 80 miles South and they only had 180Km/Hr winds.

I spent months learning how to do real nice blown pipes when I worked for JL in England and we were contracted by ZipKart to do some special pipes for the British Superkart GP at Silverstone.No matter what I did I couldnt get the same power as the hand made cone pipes.
The problem is that no matter how you do it, the changes in area are "smeared" together, especially around the mid section.
Finally we decided to make the curved header part only as a blown section, as this is very time consuming when welding alot of sections together.
This combination actually made 1.5 Hp per pipe more ( only the front pipe is curved on a Superkart).
If you look at Honda factory bikes the pipes are pressed in 2 halves and have very sharp "corners" where the angles change.
And the last GP pipes I had anything to do with - the 250 KTM, were made this way.

[RMS eng]

Spoke to Steve in Cairns last night - his email is still dead, and so are most of the trees in his front yard.
They were lucky the eye hit about 80 miles South and they only had 180Km/Hr winds.

I spent months learning how to do real nice blown pipes when I worked for JL in England and we were contracted by ZipKart to do some special pipes for the British Superkart GP at Silverstone.No matter what I did I couldnt get the same power as the hand made cone pipes.
The problem is that no matter how you do it, the changes in area are "smeared" together, especially around the mid section.
Finally we decided to make the curved header part only as a blown section, as this is very time consuming when welding alot of sections together.
This combination actually made 1.5 Hp per pipe more ( only the front pipe is curved on a Superkart).
If you look at Honda factory bikes the pipes are pressed in 2 halves and have very sharp "corners" where the angles change.
And the last GP pipes I had anything to do with - the 250 KTM, were made this way.

some times you have to go back to go forward ,have photos of 1990s NSR 500 GP bike they have blown pipes to the rear cones which look hand made.

[TZ350]

About time, could this be the first 30hp bucket?

It would be great if it is, but I suspect that if one already has 27hp it will be easer to lose a few than add two or three more.......but fingers crossed.

More chance of the new Wobbly motor cracking 30.

[TZ350]

Sub port very close to the transfer tops.

I am not sure what a good separation here looks like, but these do look a bit close.

Belzona? Never heard of it, presumably higher temp spec than Devcon? I struggle to see that holding on, but would be glad to be proven wrong. That was one compromise on my old 125 that I didn't get around to plugging while I was thinking how best to do so. Bad place to lose gas through, but such tiny holes & without super high CC compression I don't know how critical.

I am not sure how much difference plugging the holes will make and using glue, not to sure about that either.

I was sceptical about Devcon in the transfers at first and that worked, but hey who knows, and this is Buckets so we are allowed to experiment, fingers crossed.

I understand you can get it from Morgan Engineering and they swear by it.

Yep, thats the place .............. now we are about to find out if its any good in pistons.