The only mod's that you can do is put zipties around the top. But it looks like you have that down pat already. :ha:

I change mine as I see needed...and I have never seen any particles on the inside of the filter/filter housing and tube....the mugen oil has something in it that evaporates.....on the same track my son(s) used some regular foam filter oil and both of theirs was caked....same laps....same condition....I apply the oil pretty good to both the inner and outer filters....and they are done in a zip lock and stay oiled...before I install them....I just dab the outside with a clean lint free rag ....outerwear is also good...but ya need to buy a few and keep them clean too... Iv'e seen sooo many people just wipe the outerwear off and send it back on the dusty track:eek:....outerwear is best used in sand.

[QUOTE=devilchrist;6188063]I wish modders would go at this motor and see what it can do with some porting/polishing.

BTW.. anyone know will Vspec bearings fit this motor? is it 14 x 25.4x 6?[/QUOT

polishing yes porting no no no .

I would not recommend mods on any engine especially if your after fuel economy.I have never come across an engine that has been modified and can keep its fuel economy and when you add something you lose from elsewhere you just never win so i suggest forget the mods.

they are are 25mm bearing not a 25.4

cool just wanted to make sure.

what's a 3M Vet tape?

Golpher, Zipties don't seem to be necessary with this motor. Cooling head sits soooo damn low. it's 1/2 shorter than my speed motor.:weird: but wider. and seems to be much better than the magnesium alloy.

I bought the 6pack of the filters. and keep spares as well. but get's kinda old cleaning 3-4 sets every time I go out.

I mostly run at dirt bike track with couple of guys, we got a track set up and get pretty competitive, even a little destruction dirby style.. but because it's very loose fine sand, its gets everywhere, after a few laps it looks like a fog over the entire track.

If anyone else wants to run 20% nitro. here are my carb settings

LSN 1/2 turn out from full close
HSN - 1.5 turns out from full close
IDLE screw - 1.5 turns out from flush with carb body
MID - flush, (factory setting)

You'll need to find tune it from there.

Just some info for the odonnell engine owners .

The SS.21 as you are aware comes with an odonnell 97T glow plug.After extensive testing ,Steve Odonnell Has found that this plug gives you the maximum performance and superb durabilty.

please remember flames outs occur and blown plugs happen for many reasons.

1.Wrong plug selection(wrong temp)
2.Change of fuel(brand,blend)
3.Stretched conrod.(must be changed After 7 litres)
4.To rich
5.To lean
6.Different brand of plug.
7.Your engine has finally bedded in .
8.High level of nitro without re-shimming
9.Not enough oil content (castor and synthetic must be used not only synthetic.
Recommended (9% synthetic,3% castor)and a maximum of 30% nitro.Engine is already set for
25% nitro using anything higher you must re-shim engine with a .1-.2 of a thou shim.
10.Different brand and temp glow plugs will drop your idle which will need to be reset so will the finalbedding in of your engine (can happen anytime 5 litres or even 50 litres there is no time frame

It is very important to re-tune your engine if you use different branded plugs and types .This is very important and the re-tuning must not be done during a pitstop during a race it takes time to re tune (or use the same brand and temp plug and retune to a different plug when racing is completed)

Also when you change your restrictor the engine needs to be re-tuned 7mm is already installed when you go to the 8mm or even 8.5 (not supplied) restrictor everything changes and you must
re-tune your engine (richer mixture) .
Dont be aggressive with the idle ,lsn and hsn needles as you will damage the screws plus the rubber o rings.

Alot of racers think that just put the plug in and off you go im sorry it just doesn't work that way .
You have to re-tune when using another plug like when you change brands or blends of fuel same thing .

I REPEAT PLEASE READ THE MANUAL JUST DONT DO WHATEVER YOUR PAST EXPERIENCE TELLS YOU .

thank you for your time .

OD motor
 

Cobra,
I just curious and looking for an unbiased opinion, you don't have to sell the product to me. But can you tell me how the motor is in compariosn to a V-Spec, Speed, Nova 5K? these are the motors I currently have running and I know that theres alot of variables involved traction driver clutch and so on, but overall whats it like. We are currently running the Speed with 6 mm res, with thunder tiger pipe, it has plenty top end, and pretty smooth mid, this is in the ZO1B
thanks

Akiyama,

I have 2 speeds and the Odonnell motor, I will tell you pretty much what everyone else says, speed is smoother. Odonnel motor feel like a regular vspec but more power.

if you can afford the speed, stick with it. or you can get the odonnell motor for back up :)

Thanks for the opinion, I'll be buying the OD motor soon, just not in a hurry, I have 1 speed and 2specs all of which are great motors, the speed has more than enough power for the buggy, the specs we run the RE11 pipe and it tames the bottom down. But I do want to get the OD motor, and stay all OD

my next motor will either be the Ninja JX21 b01a or get the b01a crank and put it in the SS21 if it fits.

First off I have waaaaaaaaaaaaaay too many engines..lol:eek::eek: But I am on the opposite of opinion than devilchrist.....To Me the OD SS.21 has more all around power than the Speed and to me it is way more smooth from bottom to top.....I guess liniar is the word I'm looking for......the SS .21 has more Top end than the Speed and Vspecs. Don't get me wrong I like my Speed engine's and V-specs and I also have some crazy modded Vspecs and its hard for me to admit this but the SS.21 is even out pulling them:eek:....This is just my opinion:D

someone needs to dyno this motor.

I agree with Johnny the motor is smoother and more powerful and very reliable .

I believe in the motor and i believe in steve odonnell .The speed and the vspecs are great motors .off the top of my head im sure the vspec was the most selling engine worldwide period was killing novarossi in sales for a very long time .

At the Australian truggy nationals one of the drivers using this engine in his xray was pulling away from other drivers and some were using .28's.He was getting 11.5 minutes a tank using a longer header with a 2047 pipe.

so im not trying the salesman spill im just trying to teach people more on the engineering side of things than the sales spill.

The information that i give on the forum is info that has been proven through testing its not just from the sky so they are true facts .

take care guys .

The odonnell engine is much smoother and more powerful than the vspecs and the Nova .

Nova 5k was one of my favourite motors when i was distributing nova and runs well and has alot of bottom end if your using odonnell plugs in them as the Novarossi plugs are to unreliable and way to many to choose from which i believe is a myth and a scam with these special plugs etc etc .

The speed and vspecs are great motors and always have been ,great design excellent power but not as linear as the odonnell or as powerful in all areas.