Ported and polished

[Deanihilator]

I want to take one of my TRX 2.5 engines and try to port and polish it......anyone have experience with this ?

I have four so if I mess one up , who cares ;D

If someone can do it for me , I might have some ca$h in my pocket.......besides other things

At the very least , if I could find a good article on how to.I have a few in my vast collection of R/C mags , but I really need an in depth article

[Dr. Paint]

I got expirience, but don't want to do it.. LOL

[rccanuck]

i have not seen the insides of one of the trx engines yet but would love to take a crack at it . Gimmie a shout and ill hook ya up . start mellow and just improve flow and see how it goes . if we can find some info on optimal port timing for that crank then we can sqeeze open the ports a little more but that is best done with solid info and as yet i only have that for the nitro star .25 .

I have seen a siro crank for that motor and i think it included support info on port timing and such , that would be and intersting project .

[toycar]

There's an article in this months issue of R/C-Car magazine by Rick Blake (RBMods) on modifying the TRX2.5 engine. Timing wise I'd follow the same guideline as the mod for the 25 engine 210 degrees intake and 170 exhaust. Gear up when you run it the first time. I know I've over-revved and blown 3 rods on my Nitro-star 21 engine. Rod is not up to the job. However, got lucky the rod is the same as on an OS 21 99V so I've got that one now.

[Deanihilator]

Thanks guys ,I'll check that out

Hey rccanuck.........once I do a trade in on an old trx 2.5 then we can test and tune with one and I might even be able to hook you up with a trx2.5 if you want

[rccanuck]

im on that like a bear on honey, a magnet on a fridge like **** on toilet paper, im all over it baby.

[Lt. Roast-a-hoe]

If you need a cheep engine to test it out on I have an HPI .15FE that could use a rebuild. I'll give it to ya for $50.