compression on 84 250r

[bad84]

Anybody have any idea what the compression should be on a 84 250R? Thanks.

[ATCRYDER]

6.6 to 1

"6.6:1" ratio

Rob

[Dirtsquirt]

actually, his compression ratio is :lala: :lala: 7.3:1 :lala: :lala:
and your compression should be anywhere from 56-256 psi :) (clymers manual... 156+-100psi)

Pretty much the safe range for a pump gas burner is from 120-180psi. if it is under that you either need to replace your rings or bore out and replace the piston, rings, needle bearing, and pin



-Dirtsquirt

[ATCRYDER]

well then..........the 3wheelerworld specs page must be wrong...

Rob

[86waterpumper]

ALOT of the specs are wrong :rolleyes:

[ATCRYDER]

Better bring that to mr. Doody's (howdy's) attenion and HondaATC's also......cause that aint good!

[86waterpumper]

no it isn't good, i've only noticed it on the R's, such as your issue was w/ compression i"ve got a 86, and one thing is alot of the spaces are empty, like the carb size, that ought to be an easy enough one..34mm keihin but also, I do not think the stock tire size on the 86 250r was a 22 in the back, mine has stock tires and they are 20s. The 83 185 is listed as having no front suspension, which it does, I also do not think the carb on the 86 350x was a 31mm keihin, I think it was a 33 or 34. I have found other misc stuff but can't remember it right now. The ???s are what bugs me the most though. I don't know if the gaps are being worked on, or if it hasn't changed since the specs have been put up. With all of that said, I am glad the specs are there, I have hondas, but I can appreciate the difficulty finding info on the other brands and I still refer to them again and again it seems like. I will try and shoot one of them an email when I compile a better list, no point in doing it if I don't have the proper information exactly right to tell them :doh: I still would like to see someone start a honda parts list number thing, that would be an immense help. I'm sure lots of people have microfiches, and I bought a parts cd off ebay for mY R, would be nice to know the part number ahead of time. :)

[ATCRYDER]

I spoke with him tonight, he is aware of it.

[86waterpumper]

well I hunted through all my mags and sent him a list of revised specs. hope they help.