How bad did I mess this up?
Dec 8, 2015, 06:27 AM
#1
How bad did I mess this up?
My car evo 8 118k miles cosworth 272 cams stock bottom end to my knowledge. So head gasket was pushing coolant. Decided it was time for a head gasket and timing kit since it was almost due. Ordered some regular arp head studs and the Jays racing timing tool set. Got it all apart my buddy picked up the head and took it to his friend that works at a machine shop. He checked magna fluxed the head. Wasn't cracked or warped. I didn't have an allen key for the head studs so I had to run to Walmart at midnight I get back and put the head on and I forget to line up the cam gears and torque down the head. So this is the end product of this madness is one cam gear is off and I couldn't get it to line up.
so question is do I have to take the head back off to rotate the cam gear to where I need it? Thanks in advance
so question is do I have to take the head back off to rotate the cam gear to where I need it? Thanks in advance
Dec 8, 2015, 09:12 AM
#5
EvoM Guru
iTrader: (1)
You need to take the head back off. You likely torqued the head down with open valves touching a piston.
Take the head back off, and go one cylinder at a time. With the valves closed, poor gasoline in the port. It should just slowly weep through the valve. If the valve is bent if will poor out, or you'll simply be able to see that a valve is bent.
Take the head back off, and go one cylinder at a time. With the valves closed, poor gasoline in the port. It should just slowly weep through the valve. If the valve is bent if will poor out, or you'll simply be able to see that a valve is bent.
Dec 8, 2015, 10:03 AM
#6
What is the probability I bent some valves? Even with the cam gear in the position it was with the timing mark up? I will take the head off after work and make sure I loosen them in the correct sequence so I don't mess up my new head gasket correct? Thanks again for the info. And since the head studs were just installed I should have no problem installing them again and just follow the direction once again?
Dec 8, 2015, 10:16 AM
#7
EvoM Guru
iTrader: (1)
The head stud will be fine, just follow the directions again, yes. You will need to ensure they are still bottomed out in the block, they loosen when you loosen the nuts.
You should buy another head gasket.
Cam timing is 90* off in that pic. The 4g doesn't need that much to make contact. So it's likely that they touched. If you got lucky, the valve was able to push the piston out of the way. If you didn't, you might have some bent valves. The good news is that valves aren't super expensive, and getting the valve job redone isn't that bad either. If you need it.
You should buy another head gasket.
Cam timing is 90* off in that pic. The 4g doesn't need that much to make contact. So it's likely that they touched. If you got lucky, the valve was able to push the piston out of the way. If you didn't, you might have some bent valves. The good news is that valves aren't super expensive, and getting the valve job redone isn't that bad either. If you need it.
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Dec 10, 2015, 07:47 AM
#9
Your timing is wrong still. The mark go upward and faceing out a bit. You'll need the valve cover on to see where the cam gears line up.
Follow the directions here. https://www.evomoto.com/tech_article..._article_id=18. They have detailed images as well.
Follow the directions here. https://www.evomoto.com/tech_article..._article_id=18. They have detailed images as well.
Last edited by J_Striker; Dec 10, 2015 at 07:52 AM.
Dec 10, 2015, 08:45 AM
#10
EvoM Guru
iTrader: (1)
SSSTTTTTTOOOOOOOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
As point out above me, you now have BOTH cams 90* off.......
Which means you may have leak tested the wrong valves last time. In the first picture, it was your exhaust cam that was off, not the intake. Did you leak test all of the valves, or just the intakes?
As point out above me, you now have BOTH cams 90* off.......
Which means you may have leak tested the wrong valves last time. In the first picture, it was your exhaust cam that was off, not the intake. Did you leak test all of the valves, or just the intakes?
Dec 10, 2015, 09:18 AM
#12
SSSTTTTTTOOOOOOOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
As point out above me, you now have BOTH cams 90* off.......
Which means you may have leak tested the wrong valves last time. In the first picture, it was your exhaust cam that was off, not the intake. Did you leak test all of the valves, or just the intakes?
As point out above me, you now have BOTH cams 90* off.......
Which means you may have leak tested the wrong valves last time. In the first picture, it was your exhaust cam that was off, not the intake. Did you leak test all of the valves, or just the intakes?
Dec 10, 2015, 09:27 AM
#14
having your cams so far off (twice) is really bad and can end up costing you quite a bit. hopefully not..
but that's a really important job to attempt without knowing what you are doing.
Dec 10, 2015, 10:54 AM
#15
EvoM Guru
iTrader: (1)
In all reality, IF it bent valves, He can replace the few that bent (it will likely only be one cylinder if anything happened) and then get the whole head rebuilt (fresh valve job and seals, surfaced) for less then $300. So, it's not an end of the world mistake. Doing the work himself he has saved a good bit more than that on labor, and he's learning.