which plug would be better the 97T or OS P4? i ran P4 with my GRP tuned and had great success.... the TQ plugs are hard to get for me.

The TQ H4, H5, and H6 are all in stock at http://www.amainhobbies.com/advanced...words=tq+plugs

If you must use the Odonnell or OS, just try to stay with one brand or the other to keep from damaging your head button's plug seal. I would use the P4 or 99T for Summer racing, and the 97T for Winter.

ok thanks. ill just run the 97T and 99T.

Updated Carb to Prevent Vapor-Locking
 

The engines now shipping from the warehouse I'm told will have the updated carburetor. The only difference is that now a composite material neck sleeve insulator has been fitted in place of the previous steel neck sleeve. The insulator sleeve is not available separately since they are press-fitted at the factory.

The composite material insulates the carb's temperature significantly, so the incoming nitro fuel keeps the carb-body cool. This will eliminate the chance of vapor-locking in the warm/Summer months. Using the correct glow-plug helps also.

I have a TQ-501T for sales, it's broken in, but barely used. comes with 2 H6 plugs, I'm open to offers ;)

http://www.rctech.net/forum/r-c-item...ml#post8722985

Don`t know if i missed it or not but will the grp parts interchange with this model?

yes I do beleive they are. Im surprised you dont see many of these engines around. The original GRP was awesome

yea i have a few grp mills lying around was scared of running them due to parts shortage. guess i will start running them again and stock up on the speedlab parts.

I have a Marrio Rossi Tuned .21 GRP and i`m looking for a piston and sleeve, i heard the .21 TQ`s works, anyone know where i can still find these ??

Thank`s !

tecnopower outlet

I don`t see engine names, which one is for the GRP ??

You have a few options....

One... http://www.tecnopower-motor.com/OUTL...897000130.html

Two... See if Ascendancy has P/S/R combos for the Ascendancy G5. That is also the same. PM 'SoonerNate' or 'janderson78'.

Three... Just get your piston/sleeve resized and put a new rod on it. Ascendancy has rods.

part#0104001-01 (5T.21) or (5T.23) fits also. all grp, tq, ascendancy and tecnopower parts (b01,b02,t01,t02)are interchangeble.