Honda TRX250R Forums banner

77mm R stroker crank

2400 Views 16 Replies 6 Participants Last post by  blasterman88
2
250R 77mm (+5) OEM stroker crank done by ESR. Needs a new rod. Very low hours on this crank, it was brand new OEM purchased and stroked by ESR. Has surface rust from sitting around. Threads are perfect.

$75 OBO ($400 new)



See less See more
1 - 17 of 17 Posts
i am really interested but what else has to be done to run the stroker crank if using with stock cylinder and head and what rod does it use?
i am really interested but what else has to be done to run the stroker crank if using with stock cylinder and head and what rod does it use?
It uses a 250R long rod (OEM or Hot Rods) 88-89 style.

Also need to run a cylinder spacer to bring the cylinder up. ESR sells them. (If you have a Pro-x cylinder I have one).

If using a stock head, you might need it cut, depending on squish, etc. ESR sells cool heads w/ cut domes for both OEM and Pro-X if you are running a cool head or want to buy one.


Teddy
i am running a long rod with a 86 piston now so i have a 5mm spacer but what style piston does it use.

matt
i am running a long rod with a 86 piston now so i have a 5mm spacer but what style piston does it use.

matt
Not real sure about stock cylinders, but with my pro-x's it is just a standard wiseco pro-lite. Anything that I can't help you with ESR can answer, they are good about that.

Teddy
what i was looking to do if i decide to get it, rebuild the crank then swap it with my crank now and run it like this until i can save some money for a big bore cylinder or big bore sleeve. if it is a 86 style piston i can run my ported cylinder. if it is a 87-89 style piston i will have to run my stock cylinder. i am not to sure when i will get the big bore because i am in college and going to be taking 20 credits and in class from 8-8 m-f :eek:
what i was looking to do if i decide to get it, rebuild the crank then swap it with my crank now and run it like this until i can save some money for a big bore cylinder or big bore sleeve. if it is a 86 style piston i can run my ported cylinder. if it is a 87-89 style piston i will have to run my stock cylinder. i am not to sure when i will get the big bore because i am in college and going to be taking 20 credits and in class from 8-8 m-f :eek:
Depending on your port timing, I do not believe you will be able to run this crank with your ported cylinder. You can ask ESR, I am still not quite sure if you can use your 86 style piston or not. It all depends on how aggressive the porting is.

If I were you I wouldn't worry about getting a big bore cylinder right now, just build a nice motor using that stock cylinder. Have it ported and run it. In the future, if you wanted to add a 270 or bigger sleeve you could.
is it possible to get a shot of the crank from the clutch side?

thanks
2
Sorry the pics are not the best, but here ya go! The threads on both sides are perfect.


See less See more
Still available, will do $75 shipped to your front door guys!

Teddy
Still available, will do shipped to your front door guys!

Teddy

still got it??? Ive got an 88 with a stock cyilinder i cant remeber right now but i think its a 30 over bore and a cool head what am i going to have to do to make it work?
Still have it, $50 shipped to your door. All you will need is a cylinder spacer to make it work, since you already have a LR cylinder.
Still have it, shipped to your door. All you will need is a cylinder spacer to make it work, since you already have a LR cylinder.

ted how did that rod break pro x ? i heard bad things about hot rods i went with est 4mm pro x rod
Overrev contributed to this failure, other than that I don't know. That $100 +/- rod caused a lot of damage (took out my cases + cylinder=both were unable to be repaired) I have used Hot Rods and OEM and never had a failure. I guess its just the way it goes.

If you are building a stroker motor, I would probably recommend an OEM rod, JMO.

Going a different route now and don't need this crank anymore.
teddy ill take it if you got it still!
teddy ill take it if you got it still!
still have it!!

My paypal addy ID is [email protected]
ill pay pal ya
1 - 17 of 17 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top