That right there is crazy! Imagine what he would do with a Novarossi! I ran my TR R-Spec in the race today and I was not very happy with it. The motor did not run fast enough under 255 degrees. I was getting killed on the straight. I'm going to have my friend open up the motor for sure.

If you are not racing, some of this is irrelevant. I just wanted to clarify one point and make a suggestion or two with regards to cooling holes.

1st: The legal diameter for the hole in the front windshield is 50mm not 2". Unfortuneately 2" is a little larger than 50mm.

2nd: You would be better off removing the entire back window rather than cutting a few large holes in it. This give better airflow.

3rd: As somebody else stated, you can remove both "front seat" side windows, but you can't cut the "back seat" side windows.

Also the roof glow plug access hole can only be 30mm.

I wish I could find some metric hole saws... Anybody know where to get some?

yeah, i cut my hole at 2" and had to make a lexan peice to attatch cuz it was too big.

Tower sells them for $158.00 with a $20.00 rebate!

Tower is currently out of stock on this motor an will not have any more in until after September 19th. This is what I was told on Sept 3rd.

I raced this past weekend with the R-Spec and had absolutely no problems besides keeping it fired after the rain passed over and high humidity. I decided not to retune for the humidity and just warmed the engine up to temp and raced a 15min main with no problems. I thought the engine performed flawlessly, even in the straight portion of the track and the temps never went over 226 with the P6 plug and 30% racing fuel. Awesome engine and I would recommend this engine to those that race at club level tracks.

Does anyone know why Tower discontinued to carry this product?

Yeah, I just noticed this on another thread. Why is the R-Spec being discontinued??? Certainly can't be because it didn't live up to expectations...

Be realistic guys this motor can not keep up with the high end novas and evo2s on a large track, my tr-p 5 port is slower than than my ns12 3 port. Great small track club motor though.

It's still available as per OS web site

http://www.osengines.com/engines/osmg2007.html

That's weird. They were going pretty cheap though...maybe there is really a novarossi killer in the works.

i just went to place my order for the r spec and tower says that it is discontinued!?
http://www2.towerhobbies.com/cgi-bin...?&I=LXGPF1&P=0

maybe that was a typo on Tower's part ... as of Monday 9-20-04 at noon they show it in stock for $159.

guys, which glow plug works best with the ostr 3 port engine??? the engine came with an a5 plug. should i use an a3 or an r5 plug??? what's the difference between the above plugs mentioned??? thanks