ESE's works engine tuner

**bucketracer** · 30th January 2010, 22:46

Interesting dyno results here:- http://www.factorypro.com/dyno/true1.html

Those big hp Honda RS125's measured on a DynoJet are really only making 35 or so and a stock one 30 - 32 rwhp.

A big database of all the bikes imaginable, your bike will be there.

**craisin** · 31st January 2010, 07:27

So if there no advantage at pointing the carb forward
Oh right its dust injection off the front wheel

**TZ350** · 31st January 2010, 08:36

No….it’s there because it looks good, it’s all about individuality don't you know! If you have a great carb, why hide it? It looks just the bis... with all that copper and it was also a convenient place to attach it to the engine.

**=cJ=** · 31st January 2010, 08:49

Couldn't you have just 'leccy taped it to the subframe or somewhere it won't get so dirty?

I'm following this thread with quite some interest though

**Yow Ling** · 31st January 2010, 10:54

There are other awesome bikes with forward facing carbs, TZR250 3MA , some TZ500's. When I had a forward facing exhaust , I was getting lots of advice about the extra backpressure etc, that adventure solved itself as it kept falling off because of the vibration. I think the extra pull from the enoumus suction of that engine will give you a huge advantage , hell the suction may even affect other nearby bikes.

**craisin** · 31st January 2010, 11:53

yeah right if it was a multi cylinder i would understand your choice in induction systems

i guess losing some volume off your chamber would be easy

**TZ350** · 31st January 2010, 12:09

Originally Posted by Yow Ling

There are other awesome bikes with forward facing carbs, TZR250 3MA , some TZ500's. When I had a forward facing exhaust , I was getting lots of advice about the extra backpressure etc, that adventure solved itself as it kept falling off because of the vibration. I think the extra pull from the enoumus suction of that engine will give you a huge advantage , hell the suction may even affect other nearby bikes.

For me its all about style, nothing to do with performance........I have a real bling carb and want to show it off.....next I am going to learn how to hang of the side of my bike while cornering and look all fancy......

.....style is everything......everything important that is...

Watch out for a real bling copper vacuum cleaner coming to a race track near you soon

**jasonu** · 31st January 2010, 12:21

[QUOTE=Yow Ling;1129629914]There are other awesome bikes with forward facing carbs, TZR250 3MA , some TZ500's.

The 2010 YZ450 has the induction on the front side and a rear exhaust but I guess you lot in NZ won't see it for another couple of years...

**F5 Dave** · 31st January 2010, 16:58

Originally Posted by bucketracer

Interesting dyno results here:- http://www.factorypro.com/dyno/true1.html

Those big hp Honda RS125's measured on a DynoJet are really only making 35 or so and a stock one 30 - 32 rwhp.

A big database of all the bikes imaginable, your bike will be there.

Yeah that is all very well, but there needs to be some sort of comparrision & Dynojet has become the std as it has been the most popular & is equivilent to all the tests you read in bike mags etc.. Several dynos are more inflated that Dynojet, a local one is 15% both by rumour & my own comparison & another is supposed to be more than that.

An std customer RS125 on a dynojet does put out about 32-35hp. the earlier ones to the lower end of the scale, the 94s were good & the 95s slumped a little but have gotten progressively better so a pretty hot one is probably 40 until you start spending the big bucks & gas etc. A few years back the GP level ones were reputably hitting 50 & I suspect the factory Aprilias etc are tweaking on a bit now, but it has to be near the limit on the gas they can run.

**TZ350** · 1st February 2010, 06:51

Ok...I may never live this down,

but my arse has been saved by an FXR.

I have purchased a real good looking pod filter from FXR150.co.nz for my plenum carb. The filters come in 47mm and 50mm fitments and look just the biz for keeping rocks and crap out of my forward facing carb....

I will be able to finish dialling in the carburation when I get the filter then its of to the dyno.

**Buckets4Me** · 1st February 2010, 07:59

Originally Posted by TZ350

I have purchased a real good looking pod filter from FXR150.co.nz for my plenum carb.

now you are asking for trouble

**F5 Dave** · 1st February 2010, 08:55

They look just like K&Ns. Bet they were somewhat cheaper & probably just as good, made in the same factory etc etc. . . . Or so the story goes until you back to back test them on the dyno. Those Emgo ones lose quite a bit of hp compared to K&N.

**TZ350** · 1st February 2010, 12:05

Originally Posted by F5 Dave

They look just like K&Ns. Bet they were somewhat cheaper & probably just as good, made in the same factory etc etc. . . . Or so the story goes until you back to back test them on the dyno. Those Emgo ones lose quite a bit of hp compared to K&N.

Have you done a back to back comparison yourself, has anyone done a trial? if not then its something I might try. In the mean time the www.FXR150.co.nz filters look pretty good and they will do the job while I run the plenum through its "proof of concept" trials.

.

**jasonu** · 1st February 2010, 15:34

Originally Posted by TZ350

Have you done a back to back comparison yourself, has anyone done a trial? if not then its something I might try. In the mean time the www.FXR150.co.nz filters look pretty good and they will do the job while I run the plenum through its "proof of concept" trials.

.

I know Dave Dip (a long time ago) did back to back dynojet 100 runs and found a simple wire mesh rock screen over the intake of the otherwise open carb significantly reduced HP. (sorry for divulging one of your secrets Dave)