05 head gasket gone and hydrolock blahhh

[shawn3389]

ok i think i am buyin a 05 yfz450 cheap buddy was just crusing and the head gasket went and fulled the top end....hydro lock it, he said he was just goin into 2nd in a tight spot in the trail and it lock up.....whats the worst that could have happen??? thanks
p.s. if i get it i am sell the 400ex and fixing it :D

[Ride1Rob]

What?

[shawn3389]

what do u mean what????? he got hydro lock, what else do u want to know i am goin to buy it and rebuild it...new crank and piston and what ever else it needs

[mxpimp2000]

Originally posted by shawn3389
was just cursing and the head gasket went and fulled the top end....hydro lock it, he said he was just goin to 2nd in a tight spot in the trail and it lock up.....

re word ur post please i cant make any sense out of he was cursing and then fulled the top end.....hydro lock it...???

do u mean he was crusing along and blowed the head gasket and the engine locked up and he was riding in 2nd gear threw the trails went it locked up?????

[shawn3389]

lol i just wrote that after 4 12hr nights and my spelling isn't the best anyway but yeah thats what i mean...thanks lol

[shawn3389]

anyway any help would be good thanks
http://i239.photobucket.com/albums/ff186/shawn3389/Picture656.jpg
http://i239.photobucket.com/albums/ff186/shawn3389/Picture655.jpg

[mookyg]

I think what he means to say is the guy was just cruising in 2nd gear and the head gasket went, hydro-locking the top end, seizing the motor up. Low rev incident problably means less damage internally. At minimum it will need complete disassembly of the engine to clean out contamination from coolant. Probably a good idea to replace the crank as it's a sure bet that the sudden stop of the piston at the top of it's stroke didn't do the con. rod any favours, regardless of how slow he was going. Don't forget the crank main bearings either while you're in there.:) Good Luck, and have fun eating 400's up when it comes to life.

[shawn3389]

yeah i am buyin a new crank and piston and gaskets after i take it apart this week end.....i was talkin to a mechanic and he said the samething as you....thanks

[mookyg]

Why don't you go ahead and do the exhaust cam mod while you're in there. I read that they work pretty good with the exhaust cam moved one tooth on the timing chain. Also, I'm told that there is also an oil pump mod you can do that can provide better reliability. Just a few things to consider since it will already be apart.:cool:

[rc41]

yea i have an 05 and i got the timing mod done, definately a good idea and it doesnt cost anything!

i would definatly change the timing chain as the standard ones are aweful get worn out really fast!!:)

[shawn3389]

yeah read a mag that said the was the first thing u should is the cam mod and i think the oil mod is good too so it will be on the list.....:D i can't wait till its done its goin to be fun :devil:

[shawn3389]

ok have it apart and got to get a cylinder too:( , but not to bad i thought i may have to do that....goin to order stuff on Monday

[shawn3389]

heres some pics
http://i239.photobucket.com/albums/ff186/shawn3389/Picture666.jpg
http://i239.photobucket.com/albums/ff186/shawn3389/Picture668.jpg

[shawn3389]

now i still need to know what set up to get that isn't to much money but good, i found all the parts on ebay for a good price, cylinder, crank, piston, gaskets.....thanks shawn

[michealwall]

Nice pics, I guess it did come apart easy. The piston appears to have pulled apart from the wrist pin and the connecting rod looks to be bent. Your going to need to get down to the crank next. I would say crank is spent. Jug has major scores also
Enjoy the power of the beast

[shawn3389]

yup goin to split the case next....

[mxpimp2000]

i would put the true 450cc crank from a 06+ in it and a 13:1 wiseco piston thats what i have and i love mine it pulls hard

[shawn3389]

what did u use a oem or hot rods crank??