I would say if you run on a high traction track you would notice a fairly big difference between the .25 and the 5 port. The .25 just explodes out of the corners, if you run on a slippery track it might not help much. They both may top out about the same.

Rex

i think either motor u pick the 5port or .25 would be a good choice....hope u have a heat gun

i have a heat gun lol. both engines are about the same price. I just dont like buying something and question if i made the correct choice.

if i ran an rc8t i would go with the .21 5port since its a lighter truggy just my 2 cents ive had both engines .25 in a truggy and a .21 5p in my buggy, sold my truggy i only run buggy now and i believe .21 5p has enough power to be awesome in a truggy i have tried both recomended pipes dynamite 053and a 086 loved both 053 to much bottom 4 me in a buggy but IMO would rock a truggy

What if i used a bottom end pipe with the go tech 3 port race??

I ran my PTM .21 5 port in my truggy for the end of last season with an 086 and the 8mm restrictor and the truggy wasnt the lightest and had tons of power all over. My question is this same mill and pipe are going into a D8 which is really over kill, what is the most economical and practical way to tone the bottum down a bit?

run a smaller restrictor,run a softer clutch spring like a 1.0 or even a .9,alter yoru gearing go up 1 tooth on your clutch bell

me personally i'd go 7 mm restrictor,1.0 clutch,and 14 tooth bell to start and see how that works for ya..also a good throttle finger will do the trick

Does anyone have a dyno specs on the go tech 3 port race, i cant find the hp and max rpm, and rpm range. Im comparing it to the sportwerks v2 .21 which puts out 34000 rpm and has 2.5 hp and the dynamite platnium .21 xp also cant find specs on this engine..pissing me off !!!!

Here you go Derek.

Maximum power: 2.79 hp
R.P.M: 33.000 rpm
Practical Range: 6.000/38.000 rpm
Bore/Stroke: 16.26mm/16.80mm
Ports: 3 + 2
Crankshaft: 14mm SG
Glow Plug Type: Turbo
Exhaust Type: Rear

http://www.massivemods.com.au/produc...products_id=72

thanks you dont happen to know the dynamite platnium .21 xp specs do ya?
it between the dynamte and go tech 3 port r

Nah, sorry mate. Only knew where to find those ones because I am looking at running one next season. I'd say go with the GO. From what I have seen and heard, they are an awesome engine at a great price.

Cheers,
Gary

You have made the correct choice if you purchase either of those motors, both are phenomenal.

will da 5 port crank work in the the 3 port race. thanks

yes it will work in the 3port race my crank on the 3 port wore out rather quickly so i put a used crank from a 5 port gen 3-4 - crank metal is alot stronger

All .21 Go's use the same crank, Gen 5 cranks look differerent. Go is coming out with a Titanium nitride coated crank soon.

Rex