Evo 8 Valve Question...

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Sep 24, 2009, 10:28 PM

#16

project_skyline

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Are there any idents on your pistons? That would tell you if the belt jumped and broke the valves off. That or valve float could have caused them to explode off possibly.

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Sep 24, 2009, 10:46 PM

#17

B00STiNKRiSTYNA

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Quote:

Originally Posted by project_skyline

Are there any idents on your pistons? That would tell you if the belt jumped and broke the valves off. That or valve float could have caused them to explode off possibly.

theres invents in piston 1 & 3

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Sep 24, 2009, 11:00 PM

#18

TIBOevo

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maye be old timing belt, bad hydraulic tensioner. causing timing belt to jump timing alot. damn bro.

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Sep 24, 2009, 11:06 PM

#19

Evokid03

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^^^^ not a bro, shes a she

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Sep 24, 2009, 11:29 PM

#20

TIBOevo

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whoops! sorry babe. lolol

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Sep 25, 2009, 01:59 PM

#21

B00STiNKRiSTYNA

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Originally Posted by TIBOevo

whoops! sorry babe. lolol

Haha im used to it

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Sep 25, 2009, 03:26 PM

#22

garcias2k

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Sorry to hear about all your valves breaking. Seems as is I'm always maintaining or replacing on my evo.

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Sep 25, 2009, 07:24 PM

#23

barneyb

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Well, if you haven't figured it out, next time (I hope there isn't a next time) drain the coolant before pulling the head. Also, that coolant that is sitting on the pistons is headed for the pan so you should get the pan drain plug out too.

Got luck with the repair.

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Sep 25, 2009, 10:11 PM

#24

sparky

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Quote:

Originally Posted by B00STiNKRiSTYNA

my guess was the cam timing was off. but what do i know, im just a girl..

Evo girls are O.K. Their opinions are valid.

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Sep 25, 2009, 10:46 PM

#25

B00STiNKRiSTYNA

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Quote:

Originally Posted by barneyb

lol i tried draining as much as i could without taking out the radiator lol.. didnt work too well

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Sep 26, 2009, 08:03 AM

#26

barneyb

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Quote:

Originally Posted by B00STiNKRiSTYNA

lol i tried draining as much as i could without taking out the radiator lol.. didnt work too well

With the coolant out of the cylinders, put some clean oil in each cylinder and turn the crankchaft a few times by hand. You don't want the bores to get rusty.

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Sep 26, 2009, 03:07 PM

#27

B00STiNKRiSTYNA

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Quote:

Originally Posted by barneyb

With the coolant out of the cylinders, put some clean oil in each cylinder and turn the crankchaft a few times by hand. You don't want the bores to get rusty.

thanks

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Sep 27, 2009, 11:02 PM

#28

crewdawg130

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Quote:

Originally Posted by Evokid03

ya u just have to do some modifcation to ur block... i beleive u have to tap for an oil line and get the harness/ mivec sensors

Negative, the oil line is on the head. Stick with 8. by the time youre done converting you could have a stage 2 head.

I bet with the timing jumped...ALOT. too bad. i bet you smashed them pistont really bad also.... Thats a engine build... im sorry .

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Oct 5, 2009, 01:48 PM

#29

EVO8emUp

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If you removed the belt, then the belt (most likely) wasn't the issue. I doubt the timing was off the whole time cause it would have failed a lot sooner. I'm betting on a failed timing belt tensioner. As far as the bolt backing out of the flywheel. Install error.

As long as the head isn't cracked, it may be fixable. You'd be surprised at what can be fixed.
I've seen heads with gouges in them, trashed seats, messed up guides, you name it. Repaired.