crank markings

[KY250r]

hey my 86 crank has a ha4 then a 10 at the end. well dan hungs crank has a ha2 then a 1 on it. what do these markings mean. mine is a short rod i do believe.

[danhung11]

This is what KY250R is talking about - will this work on all of the 250R's? He has 86 and I have 87....

[DPR250R]

You have to know if it is a short or long rod....

All the years will work with one another. Just make sure you use the right piston or piston/spacer plate setup with the right crank.

Also... make sure the OEM (Wiseco complete cranks hove no such mark) crank has a mark on it for the counter balancer. One of my buddies got ripped off on Ebay. Someone sold him a CR250 crank and told him it was a for a TRX250R.

[KY250r]

if its a 87 its a long rod. where can you get spacer plates? imn trying to get this thing back together i got the fever to ride.

[danhung11]

Originally posted by DPR250R
You have to know if it is a short or long rod....

All the years will work with one another. Just make sure you use the right piston or piston/spacer plate setup with the right crank.

Also... make sure the OEM (Wiseco complete cranks hove no such mark) crank has a mark on it for the counter balancer. One of my buddies got ripped off on Ebay. Someone sold him a CR250 crank and told him it was a for a TRX250R.

Where is the marking on for the counter balancer at? I can get more pics.... I will look at my manual tonight and do some research. I am sure Service Honda has part #'s too....

Hey KY250r... do some research also.

Thanks DPR250R!

[danhung11]

:ermm:

[86 Quad R]

the markings will be on the splined end of the crank. here is a pic.

[DPR250R]

Originally posted by 86 Quad R
the markings will be on the splined end of the crank. here is a pic.


That is funny man....lol...

I posted that pic on R-Riders a couple years ago.. I can't belive you still have it....

That was an 85 ATC motor I built for a buddy and "OUT" was spelled wrong... lol...


And yes... the mark on the crankshaft (highlighted yellow) is the one I am talking about...

I do not know the mearusement off the top of my head of a "Long Rod" vs. "Short Rod"... I have an extra long rod at home I could get the measurement for you...

There should be a 5mm diff between them...

[86 Quad R]

that is phunny....... thats the very pic alright. :blah:

there is a 5mm difference in the two rods. one is 125mm(85/86) and the other is 130mm(87-89) but, for the life of me cant remember the identifying numbers/markings. :confused:

[danhung11]

:ermm:

Thanks for your guys' knowledge!

[danhung11]

:D

[KY250r]

crank pic 1

[KY250r]

2

[KY250r]

piston

[honda350r]

HA2 = long rode 87 and newer

HA4 = short rod 85/86