Polaris Engine - Page 2 - Snowmobile Forum: Your #1 Snowmobile Forum

palmrose2 · 03-16-2008, 05:39 PM

I'm looking at these pics and wonder if there may be another place on the engine where you can find the number. Seems like there should be a tag somewhere instead of just cast into the aluminum.

oldie yungin · 03-16-2008, 09:49 PM

I'm 90% positive there isn't another tag on the engine but if there was one it'd be either on the blower housing on the side or above the clutch on the jug.I'm pretty sure mine has a tag above the clutch but mine is a 1990 l/c 400 indy.

**RJ Gleason** · 03-17-2008, 04:20 AM

There should be an ID tag mounted in the front of the block, below the exhaust by the recoil housing.

palmrose2 · 03-17-2008, 08:24 AM

From my Intertec manual that covers Polaris up to 1986.
"Typical engine decal located on engine crank case."

To bad I don't still have my old Apollo, I could just look at it and tell where to find it.

maggiemay199819 · 03-17-2008, 06:10 PM

I think the "fan belt" you all are referring to is the belt on the clutch. That sled is supposed to have a triple in it. TXC is the TX centurian 500. Racing sled. On any 340 fans we have in the tx"s colts geminis ect we use B8es. You can use a nine but you may foul a plug if your oil to gas ratio isnt right. Better check the specs on the helix too. One would assume though if the guy was driving it they have allready done extensive clutch work

maggiemay199819 · 03-17-2008, 06:18 PM

delete Newby at the computer

Skligmund · 03-17-2008, 08:02 PM

Quote:

Originally Posted by maggiemay199819

That sled is supposed to have a triple in it. TXC is the TX centurian 500.

No, there is a TXC 340 Polaris. It came with a free air 340 twin. Do a google search for "TXC Polaris".

Skligmund · 03-17-2008, 08:05 PM

Oh, just run BR8ES's. Resister plugs offer advantages with NO losses, non-resister plugs only offer shorter CDI life and electronic interference. There are no power advantages. If it won;t fire properly with a resister plug, then soemthing is wrong (kinda like if you need to run splitfire spark plugs).

scuba · 03-21-2008, 03:11 PM

i have checked 4 times and the engine # is as follows EC34PM 05. i know this is NOT original engine, but i still have not found any referance to the 05 part of the engine number.

scuba · 03-21-2008, 03:15 PM

check the pics that are posted.

scuba · 03-21-2008, 03:19 PM

the engine # is EC34PM 05 i know that this is not original engine and i cannot find any referance to the 05 part of the number. that is what determines the year of engine correct?

**RJ Gleason** · 03-22-2008, 07:58 AM

No, the 05 is a performance designation. I am not exactly sure what it refers to though.

I once had an engine that I had in a Colt SS that was designated by EC34FA/06. It was 340 Free Air. Fuji/Star Motor from a race sled.

oldie yungin · 03-22-2008, 01:53 PM

But i'm positive that the 'fa' in the code means that it was a free air engine. If that one had the original engine in it and it was a 340 free air engine it would most likely have the same letters to designate free air but it doesn't and its fan cooled. The guy just wants to know what year sled its out of so he can buy parts i honestly don't think he cares whether its the original engine in it or not.He's been buying parts for a f/a and he needs parts for a f/c engine.

Skligmund · 03-24-2008, 11:51 AM

And what we are saying is to our knowledge, that engine doesn't exist. Some sort of one off thing, probably a test engine or a race engine of some sort. We are trying to figure out what it is.

oldie yungin · 03-24-2008, 10:12 PM

I was just thinking it was a regular ass fuji engine but i guess i was wrong. It looks so oddball that i have no idea. From the pics it looks like a free air to me(duh,right?). Well you can call up polaris in roseau and ask them i'm sure they have a 1-800#...or a reputable dealer near to you i don't know whats up in big lake but i've always had good luck at garceaus over in vadnais heights with finding old polaris parts

**RJ Gleason** · 03-25-2008, 05:08 AM

And, what I was saying is that the EC34PM is a fan cooled designation, not a free air.

scuba · 03-25-2008, 07:53 PM

so if the 05 portion isn't the year code, how do i find out what year the engine is? and thank you guys for all the help and advice i really appreciate it!!!!!!

**RJ Gleason** · 03-26-2008, 02:03 AM

All you need it the size code when ordering any parts. Pistons and rings will be the same for all the 340s the main difference will be in the top end gasket sets.

PolarisBlood · 04-02-2008, 05:08 PM

Quote:

Originally Posted by RJ Gleason

TXC is a free air engine.
Should have EC34PT-07 in it.
You need to run resister plugs wit the CDI, or you could have problems.(burn it out)
The Br9ES is the correct plug for most of the engines.
The EC34PM01/02 is a fan cooled engine.
I had one of those and it was a nice little sled, quick and agile on the trails.

Got any pictures of it and in the engine compartment?

RJ, I have a 76 Tx250, BR9ES would NOT work in it..make one lap around the yard and it would die...the heat range was too cold for it...he might be better off with the BR8ES..its a little warmer plug, but yet cold enough to keep it from burning down...Definitely DONT use a BR7 or 6ES...way to hot of a plug for a free air engine...

**RJ Gleason** · 04-03-2008, 08:25 AM

I have run the 250's and 295's as well and never had any trouble running the 9's. If you are fouling plugs then there is a problem with either too much fuel or low compression.

If the air screw is set too rich, that would contribute to the problem.