Bent Valve was the problem

rrudholm

New Member

Apr 23, 2006

60

0

0

Aug 2, 2006

#1

• Aug 2, 2006

• #1

I just pulled the Roush 200 heads off to find some of the valves have made contact with pistons and one bent valve. The "A" hole that built my engine sold me these heads refurbished. I have learned one thing, I will never buy refurbished anything agian. I have also learned that I don't want these crapy cast iron heads anyway. The $650 I lost will have to be considered "stupid Tax" Is it possible that the 2.02 valves in these Roush heads are too big for stock pistons and that is why they hit pistons or Valve float? I am looking at buying Edelbrock Performer EDL-60329 Cylinder Heads. Anyone using these?

 

WhiteDevil

New Member

Feb 4, 2003

2,717

0

0

San Diego

Aug 2, 2006

#2

• Aug 2, 2006

• #2

rrudholm said:

Is it possible that the 2.02 valves in these Roush heads are too big for stock pistons and that is why they hit pistons or Valve float? I am looking at buying Edelbrock Performer EDL-60329 Cylinder Heads. Anyone using these?

Click to expand...

Yes that is exactly the problem. Your builder should have checked piston to valve clearance.

 

final5-0

Mustang Master

Apr 6, 2003

6,817

12

79

DFW Texas

Aug 2, 2006

#3

• Aug 2, 2006

• #3

Not Sure

But as I understand it

Valves that big only work with our oem shortblock if they are canted like TFS and the like.

Hate to see you had the issue

Maybe you can get them back in shape for just a little cash and sell em to go for Plan "B"

Grady

 

rrudholm

New Member

Apr 23, 2006

60

0

0

Aug 2, 2006

#4

• Aug 2, 2006

• #4

I was going to go new aluminum heads when the engine was built but I cheaped out. I'm finding out the hard way, Just do it right the first time

Anyone using Edlbrock Performer heads?

 

WhiteDevil

New Member

Feb 4, 2003

2,717

0

0

San Diego

Aug 2, 2006

#5

• Aug 2, 2006

• #5

rrudholm said:

I was going to go new aluminum heads when the engine was built but I cheaped out. I'm finding out the hard way, Just do it right the first time

Anyone using Edlbrock Performer heads?

Click to expand...

Yeah i have the 60329 heads on my stang. Love em!

 

rrudholm

New Member

Apr 23, 2006

60

0

0

Aug 3, 2006

#6

• Aug 3, 2006

• #6

What size push rods did you use? I have hardened 6.25" with Crane Cams stud mount rockers (energizers) and FMS E-303 cam.

 

blksn955.o

Founding Member

Mar 15, 2002

3,263

0

66

st.louis mo 314

Aug 3, 2006

#7

• Aug 3, 2006

• #7

The heads are not junk it was 100% install/parts match up/combo choice. It sucks to hear about but not the heads fault.

Why not notch the pistons and get the bad valves replaced...it would prob. be cheaper and would work then.

 

WhiteDevil

New Member

Feb 4, 2003

2,717

0

0

San Diego

Aug 3, 2006

#8

• Aug 3, 2006

• #8

rrudholm said:

What size push rods did you use? I have hardened 6.25" with Crane Cams stud mount rockers (energizers) and FMS E-303 cam.

Click to expand...

I used stock length hardened push rods with a Crane 2031 cam and Trick Flow 1.7 Rockers. With my new 347 combo im using the same pushrods, and rockers, with an FTI cam and my geometry was great.

 

rrudholm

New Member

Apr 23, 2006

60

0

0

Aug 3, 2006

#9

• Aug 3, 2006

• #9

I'm wondering if it was not really a mismatch but rather the springs are too weak or the builder had the rockers adjusted too tight from the start because this thing was running great up until I reved it real good and hard. I got on it some what before and nothing hapened?

 

RIO5.0

15 Year Member

Feb 16, 2001

6,892

8

128

N.H.

Aug 3, 2006

#10

• Aug 3, 2006

• #10

Have you spoke to the gent who built it??

 

rrudholm

New Member

Apr 23, 2006

60

0

0

Aug 4, 2006

#11

• Aug 4, 2006

• #11

oh Ya, West Michigan Machine in Muskegon, Michigan. He does not want to own up to the fact that he did something wrong. The word on the street is that this company had a good reputation and now it's not so true any more as it has changed ownership. I didn't know this going in. I have analyzed closely what has happened with my engine and believe it was valve float. I'm going to take these heads to another machine shop and see if maybe he has the wrong springs. I know that with a roller cam you need a pretty beefy spring.