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Old 02-09-2010, 03:05 PM   #1
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which is better the silver or orange head grp.21?
thanks
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Old 02-09-2010, 03:14 PM   #2
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which is better the silver or orange head grp.21?
thanks
silver is non-tuned orange is tuned better performance. The crank shaft and rod are different between the two not sure about the P/S.
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Old 02-09-2010, 03:25 PM   #3
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Unless you are getting a great deal on this motor, do not buy it as it will be hard to get parts for it, they are no longer made. I would not pay more than $150.00 for a New GRP tunned.
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Old 02-09-2010, 04:02 PM   #4
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there an awesome engine and sadly like stated above there not being made anymore. at least with the GRP name on them anyway. Falcon has the exact same engine but is very expensive. at least you could buy parts if necessary. the tuned GRP was my favorite engine for a long time. its not the most powerful but smooth as silk. runtime is awesome when piped rite.
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Old 02-09-2010, 04:08 PM   #5
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ok thanks
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Old 02-09-2010, 04:15 PM   #6
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ok thanks
THE GRP TUNED IS ONE OF THE BEST ENGINES EVER MADE I THINK GREAT RUN TIME FAST AND SMOOTH AND WOULD EASY LAST THE 10 GALLON MARK PLUS EASY TO TUNE IF THE PRICE IS RIGHT DONT BE AFRAID TO BUY IT IT WILL LAST YOU A LONG TIME IF YOU TAKE CARE OF IT
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Old 02-09-2010, 04:17 PM   #7
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alright ill buy it, i just got a mbx6 and i cant wait to get it race ready
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Old 02-09-2010, 04:22 PM   #8
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THE GRP TUNED IS ONE OF THE BEST ENGINES EVER MADE I THINK GREAT RUN TIME FAST AND SMOOTH AND WOULD EASY LAST THE 10 GALLON MARK PLUS EASY TO TUNE IF THE PRICE IS RIGHT DONT BE AFRAID TO BUY IT IT WILL LAST YOU A LONG TIME IF YOU TAKE CARE OF IT
noticed you pickup some spare parts always miss the good sales off to ebay??
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Old 02-09-2010, 04:59 PM   #9
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THERE IS ALOT OF PARTS THAT ARE DIFFERENT TURBO HEAD BUTTON CARBURATOR CRANK SHAFT REAR COVER HEAD JUST SO YOU KNOW
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Old 02-09-2010, 05:02 PM   #10
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Amain has tuned cranks for under 60 bucks. I just put a tuned rod and crank in my silver head GRP, i get around 11-12 min on a tank in my RC8B depending on track layout. Great motors, just a shame there almost extinct.
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