running an Axial
 

We all know that if you put An Axial engine in any of the top ten at the worlds that it would produce the same result. As far as running the motor to 400 degrees in testing is not to see if it can run at that temp, but it was just a test the durability of the materials within the engine. Axial is commited to put the best quality into all of their products. If you had a little business sense you would understand why Axial decided to skip the worlds this time around. Time wil be the judge and those that acually own one.

Id have to agree ,as a Profi 12 user I have gone through some teething problems and have overheated engine a good few times where my temp gauge couldnt read the temp >400deg/c
I have stripped engine and everything is A ok.
Fianlly figured out the problem with engine was the hsn oring got too loose and when running car the hsn was turning clockwise ,leaning out the engine.
If anybody else had these hassles they would have given up on the engine but I had to find the problem.I found problem when I was blipping the throttle with car on the starter box and I saw something move in the corner of my eye,when i blipped a gain saw the hsn move.

I am convinced if I had this problem with any other engine I would have had a different result.Engine running sweet and is not showing any signs of power falling off.

The Palmaris Profi PR 12 rod is 25mm and should be the same as Axial 12RR.

You don't have a clue on what you are talking about, "put an Axial engine in any of the TOP ten at the worlds", :lol: :lol: :lol: What.............. you must be kidding, it is not going to even make the Y main :lol: :lol: :lol: you make me laugh :lol: :lol: :lol:

Enough already

The Orion Wasp CRF engine con rod length on centers is 26.6mm.

I will have more info to add later, as this is the only one I have data on stuck in my head at the moment. I have many other engines that I will open and measure, possibly this evening.

BK

you are right I thought that corex had a little sense but with his latest post it speaks for itself. ok onward with our education

thanks rmdhawaii
Peter

Ignore Corex. He is just a troll, and he is having fun with us now. Just ignore him and he will go away.

Thanks Brian! :smile: :smile:

I have a NIP STI conrod. I'll measure it tomorrow and post the results.

Dave

Sirio Evo 3 STI Conrod Information:

Length A (Inner Diameter) - 22.1234mm
Length B (Outer Diameter) - 29.87mm

Crank Bushing Diameter - 4.5085mm
Wrist Pin Bushing Diameter - 3.3782mm

Conrod Lenth On Centers - 26.067mm

Dave

Thanks Dave!

The rod/stroke ratio for the STI comes out to 1.90. :( While not the greatest news, this isn't exactly a surprise, as it has already been mentioned that the STI is a high RPM engine.

Hmmmm... Now I just need the OS TZ conrod length for comparison. :nod:

Oh yeah... and the Mega ZX12 and new DSII.

BTW: More reading

Rod Ratio - Kinematics
http://e30m3performance.com/tech_art...atio/index.htm

Rod Ratio - Dynamics
http://e30m3performance.com/tech_art...mics/index.htm

Connecting Rod vs. Stroke Analysis
http://victorylibrary.com/mopar/rod-tech-c.htm

Taking into account tolerances, and according to Sirio the rod lenght is actually 26.00mm.

Mega ZX, and ZX DSII have 26.00mm.

OS TZ's have also 26.00mm

So all these engines have a stroke to rod ratio of 1.86

The Orion CRF has a 26.6mm rod lenght and stroke to rod ratio of 1.90

1.75 : 1 ratio = wide power band
2.00 : 1 ratio = narrow power band

But to finish the chart you have to take into account the engine's timing diagrams.....Induction, Transfer, Exhaust

For example I have timings for:

Orion CRF OS TZ Sirio Evo 2
Induction 255º 206º 213º
Transfer

Hi Reiner. It is really valuble info, but please remember that not everything from real car engines is translated straight to our engines. So when you make decision please take to concidiration that factor.
Enjoy!!!!