esr 310 or psi genesis 265 ?

[sbjones73]

k guys , i have the chance to get either a esr 310 set up, or a 265 psi genesis.

i have a 85 250r and will be using it for ice racing mainly. race gas, and running a 38mm pj from a cr 500, i have a fmf fatty pipe and a fmf powercore silencer, most likely boyeseen reeds in stock housing. or maybe duncan pyramid, (not sure on this yet, most likely stock with boyeseen though)

need to know what set up you all would recomend,,

thanks!!!

[sbjones73]

any one ? need some information here

thanks

[El Camexican]

Racing? An abundance of cool air? Race fuel? No brainer, go BIG Dude!

[250rmanfmf]

Go to trx250r.net and look in there forums or ask the question. That site is has lots of info on performance Big Bore 250r's. I heard to stay away from just bolt on esr jugs because of siezing and such. But I have no experience with esr or PSI cylinders.

[sbjones73]

thanks, good information on there, !!!!!

[BWard]

I would contact Eric Goerr of Forward motion he is near Madison WI. have him build the engine then send it off to Dyno Port to build you a Killer Pipe, I had one of Erics motors in my 86 trx250r and it was Fantastic. When I build my next 250r thats what I'm doing.
my 2 cents

[sbjones73]

that name sounds familiar, i live like 25 miles south of madison.

thanks !!!

about how much for him to build one, just a ball part number would be good,
thanks

[D-dub]

Ive heard good things about CT racing, also try LRD and FTZ

[sbjones73]

thanks, i will check into them for sure. i gotta make a decision very son here. i am a very inpatient person, and want this thing running like a top before it starts getting cold, in wisconsin that can happen in like a week !!!! crazy weather i swear!!!

[D-dub]

i want this thing running like a top before it starts getting cold, in wisconsin that can happen in like a week !!!!
Tell me about it.....Im in Manitoba!

[sbjones73]

oh yeah so you more than feel my pain when it comes to the weather changing !!!

[ceaserthethird]

I have a LRD Ported Cylinder, Pro Cross ~ Power Valve. 265cc.

Really Nice Cylinder's.