cam scaring??

[Poodles]

whoa whoa whoa...

Way too much crazy stuff being thrown around.

Back to the point, that is 100% completely NORMAL for these engines! The steel of the cams is tougher than the aluminum of the head, and like if you use sandpaper or a file on aluminum, it will fill all the small holes in abrasive. It naturally smoothes it out and if the material is removed, the process starts over and the clearances open up.

 

[starscream5000]

The best thing for you to do if you aren't planning on dumping major amounts of money into the head is to keep it, and check the clearances to make sure they aren't out of spec per the TSRM.

 

[thebuddrik]

before machine shop or after?

Thank you, I need to get my car rolling

 

[starscream5000]

What I was referring to was, if you're not doing what post #9 said, then after machining and such, you will be better off just keeping the head you have now as long as it's usable.

 

[thebuddrik]

line boaring is so expensive they quit doing it around here. the machinest said that for the price of line boaring, mating surface, and a valve job I could buy a new head. I will bring what I have to a machine shop and see what they have to say about it in person.

 

[noah89t]

try a machine shop in baton rouge if no one in lafayette is able to work on it.

 

[thebuddrik]

I did, he is the one that said that nobody did that too much any more, for the price of line boaring i could buy a new head.

 

[williamb82]

yeah, but youd have to buy new cams as well. which is extra money

 

[IJ.]

More important is to have the head checked for hardness before spending a single cent on it if it's soft it's junk.

 

[thebuddrik]

I brought the head to a local shop. I was worried about finding a good place that had worked on them before and as soon as the guy saw the cams (without me saying anything) he knew what kind of car it was for. Any way, they pressure tested it, polished the cams and miked them (they were in spec). They said that it would cost me $560 to reserface and do a valve job, replaceing the one burnt valve, plus the cost of a valve seal kit. Does that sound too expensive?

 

[IJ.]

More important is to have the head checked for hardness before spending a single cent on it if it's soft it's junk.

???

 

[Facime]

That sounds a bit high for head work. I bought a fully machined and ported head for $350

 

[thebuddrik]

what would cause hardness? I have never overheated the car, this is not from a BHG. all of this is from a burnt valve. Please explain.

 

[thebuddrik]

never mind IJ, I guess I should have searched before I replied. soon as I hit the button I found some info on it. the first one I saw was from you. I will find out what the hardness is. might I trouble someone for what I should hope it is.

 

[IJ.]

Even is best as long as it's not all soft!

The heads are heat treated when new but over time they tend to soften on the exhaust side and if overheated at all can end up full soft and useless.

Bad idea spending $ on a soft head as it will mean trouble later on.

 

[thebuddrik]

is that something a machine shop would check for before they would do work?

Im kind of nervous, whenever I thought my cams were bad I bought a head( allready machined and ready for a MHG) off of ebay. That is the one thing that I. Didn't ask about was hardness.

 

[IJ.]

Yes it's a really simple 5 second test using a scleroscope.

Sadly it's often overlooked then people wonder why they have another BHG a few weeks/months later..

 

[thebuddrik]

is it something that a machine shop would check for on their own, or would u have to ask for it?

 

[IJ.]

They "should"

But I always ask (well did before I bought a tester)

 

[Enraged]

also, get an estimate on the machine work, then look at this: http://cgi.ebay.com/ebaymotors/TOYO...024QQitemZ370040551217QQrdZ1QQsspagenameZWDVW

same place a few members have bought their heads from, ill be buying one eventually.