Dropped Valve Seat Repair w/Pics

[Zack]

I took my friend Gary's Marauder in Saturday.
His MM has had a miss that got something terrible in the past few weeks. No engine codes or obvious things wrong.

I pulled the plugs out and knew which hole was bad as soon as I got to #8...it was soaked. I tried a new coil and plug first to rule that out, then did a compression test....FAIL...ZERO

Fast forward to Monday when I started further diagnosis. I popped the cam cover off to find a follower laying in the head. Clue # 1.
Then I popped the other 3 followers off for that cylinder and pressurized the cyliinder with air. A quick trip to the tailpipe and you could hear the air coming out plain as day. Final Clue....valve seat

So quite literally a few hours later im to the point as seen in the pics below.
Head goes into the shop tomorrow. Thankfully the cylinder wall looks good. Im confident the car will run good as new when its back together.
BTW, to save time I pulled the head and exhaust manifold off as a unit.
Dont freak at the pics, I know where everything goes, LOL.

Click to read more...

 

[4DoorBlackTop]

Sick.............

 

[sideways]

yikes

 

[Zack]

I dropped the head off to Wolfe Racing Engines yesterday.
I met Marty the owner. He seems like a good guy, I hope he is different than most engine shop owners.

 

[Zack]

Moving right along.
Picked up the head Friday night....only a 2 day repair! It got a 2 mm oversized valve seat and a new valve. The head got cleaned up and the valves lapped in.
Despite the broken stud in the exhaust manifold (which took hours to extract) this job has been a no-brainer.
Just waiting on the Evenflow Kit and this car will be done and done.

 

[ProRauder]

Excellent work. :hail:

 

[Dana]

Zack,
Where's Wolfe located?

 

[Zack]

Zack,
Where's Wolfe located?

http://www.wolfengines.com/

They are North of Steger Rd. on Louis Sherman Drive.
First impressions are quite good...I had to beat him up so he would leave the rest of the cylinder head alone and just fix the bad parts. Really respectable attitude Id say.

They have a full staff, engine dyno, huge building and friendly workers.
Ill definitely be going back to have my Boss Shortblock assembled there.

 

[Dana]

aren't they primarily boat engines?
I remember talking to someone about them a long time ago.

 

[Zack]

aren't they primarily boat engines?
I remember talking to someone about them a long time ago.

I did see a few boat engines built and ready for pickup.
He explained to me they are a full service shop and have done many many modular engines for customers.

 

[TAKEDOWN]

Awesome... I'm sure Gary will be more than happy with the results!

 

[Zack]

The car is finished.
Sadly, as I suspected the rings suffered from being washed out with gas for a long time.
Although the engine makes real good power above 1000rpm's, anything below has a noticeable shake.

 

[Dana]

maybe there is another problem in another cylinder?

 

[Zack]

maybe there is another problem in another cylinder?

It runs too good for there to be a problem elsewhere.
Its a minor minor shake when idling.
The owner is happy

 

[4DoorBlackTop]

Thanks for the writeup.