85 250r intake and carb on a 84 250r ???

[a-camp]

Has anyone done this ? What Jets to start with ?? I have a few extra carbs and intakes of 85 250r 's and a friend with a stock 84 who needs to go faster. Is a D.G. the pipe for him ?

[resto250r]

I have an 83 also when I got it it had a 85 carb on it (34mm round slide) I hear the best carb upgrade would be a 38mm flatslide (Keihn PWK, or Mikuni TM). I upgraded to a 36mm Mikuni flatslide and she screams, my jetting hear in phx is a 55 pilot, and a 300 main(needle is @ sea level). I still had to put on a bigger front sprocket for more top end though(wish II had a 6speed). She's got clean response all the way threw though. Oh yeah but I'm running a DG pipe and silencer, boyseen reeds, and an open uni filter. Hope this helps!!

[resto250r]

Oh as for the jetting neededd for the 85 carb mine had a 55pilot and 155 main. I think the 155 might have been to fat though but it's a start.

[Derrick Adams]

I'm planning to do this to my 83 as well. From what i've seen, I think i'm going to warm up the stock rubber intake and slip the new carb in and let it cool. The 85-86 intake is a different angle.

[a-camp]

I want to know if that works . I was going to just not use an air box. Sand only for this guy.

[resto250r]

Yea I was told the same thing. To put the intake in the oven to heat it up to stretch the boot over the bigger carb.

[a-camp]

Sounds like i may need one wiyhout cracks.

[dirtface]

Yea, No cracks, cracks are definately a bad thing.

[John mendolera]

I put a 34mm on mine and I did use the 85-86 intake it is a differant angle but it work's.My atc looks' stock except I have a dg pipe and silencer.Stock 84 airbox and hose .I run stock jet's It seem's ok.My atc fly's,I haven't run againts my 85 but it seem's very close in speed.Way faster then stock and wheeles all the time.