average cost of head work

Charlie97L

New Member
Jul 16, 2005
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Clarksburg, MD
ok guys, i'm starting to get together for my rebuild, and i'm planning on getting the head resurfaced, lapping the block, and metal HG with the brake stuff. how much will the head refinishing cost on average? i know it will vary area to area, but i'm just looking for a ballpark here.

also, i don't have a BHG, i'm doing preventative... is there anything else i need to get done to the head while it's at the machine shop? I searched, but a lot of people took a lot of different routes, so i'm just not sure.
 

aye mate

Hiatus over.
Mar 30, 2005
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Maryland
Yo charlie, I'll look around for you around here, bound to be a machine shop in the area... haha. If I was gonna send my head to a shop I would have a PnP done.
 

Charlie97L

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Jul 16, 2005
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aye mate said:
Yo charlie, I'll look around for you around here, bound to be a machine shop in the area... haha. If I was gonna send my head to a shop I would have a PnP done.

cool mang, yeah you're gonna help me... why aren't u on AIM? at school? :)
 

GrimJack

Administrator
Dec 31, 1969
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Unfortunately, it depends on the condition of the head. If it's flat enough, then it'll be pretty cheap. If it's not, you might have to get it baked to remove the twist, then get the surface skimmed, new valve seals, etc, at which point you're looking at about $1000.
 

aye mate

Hiatus over.
Mar 30, 2005
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Grim: Are talking about having the shop do the seals? Cause we can do that. I have done that on my car and Charlie is like 30mins from me so all we need is parts.
 

TONY!

Habitual Supra Killer
Mar 30, 2005
524
6
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Tonyland
I already estimated how much it would be to build a long block if the parts meet specs.
http://supramania.com/forums/showthread.php?t=8475

Just to rebuild the head assuming that meets specs and is not twisted...well let me give you some background info first.

Guides don't seem to wear out much on these cars. The guides will most likelly not need to be replaced.

.0039" is the max your head can be warped before you need to straighten it out.

Being that we have over head cams that are so far from the oil pump, the cams will be somewhat scored on some of their jounals. If the oil clearances are excessive, many shops will machine some material off of the cam caps to reduce excessive tolerances. Some shops will even tell you that you can do it yourself with sand paper--but you need to be careful and keep measuring as well as know how to measure.

The services that will most likely be needed are milling (to a low RA if using a MHG), replacing valve seals, cam seals, and a valve job.

$200 valve job--with me assembling the head; add $80 if the shop builds the head
$60 mill the head
$35 clean & dye test the block for possible crack
$24 tax from machine shop
$75 valve seals--if not bought in the complete gasket kit
$10 camshaft seals--if not bought in the complete gasket kit
$7 shipping on seals
$30 *probably the cost for me to get valve shims from a machine shop*
$5 assembly lube if to be stored for a period of time; $1.70 motor oil if to be assembled back in the car soon

$446 Total cost of rebuilding a head that does not need to be straightened or to have its guides changed--Starting from scratch

Add $50 for a valve spring compressor and its shipping if doing the work yourself and need one.
Add $280 if the guides do need to be replaced, plus tax.


Some might say that buying a built head would be cheaper from a company, but that is really an unknown to me. Some builders paint inside the head and are very sloppy and will spray where paint is not supposed to be. (That is a marketing tactic I am not too fond of--it sure makes it look nice in pictures though for some buyers.) Also keep in mind that not all rebuilders are equally concerned with the specs stated in the TSRM. What flies out of the door from one builder may be considered a defective item by another machinist/builder.
 
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mazzer

Banned
May 3, 2005
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st.louis,mo
i paid $490 for: baking,pressure test, radious ground orig. valves and seats as well as a finishing cut. if youre doing a mhg be carefull of what thickness to get as you dont want to change the distance from your crank to cams..
 

Nick M

Black Rifles Matter
Sep 9, 2005
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At Toyota we charged $300, which was the same as what Gunn did it for in Denver. That is regrinding the valves, installing seals, etc. $1000 sounds extremely steep to me. Maybe with a full port job or something?

Decking it will add another 50 usually. Lapping, I dont know.
 

Stretch

Tallest MK3 driver ever!!
Mar 30, 2005
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Toronto, Ontario
$20-30 to clean
$60 to mill
$13 per valve seat for regrind with 3 angles

Not including seals since I will do that myself, and also not including any assembly since I took it apart and will rebuilt myself.
eric
 

Satan

Supramania Contributor
Mar 31, 2005
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Tampa
FWIW...

I used Eiesley's Machine in Tampa (Brandon), FL...

I supplied the valve stem seals and they did the rest... valve job, seals replaced, cleaned, etc... Came out to less than $200.

The 2nd time, I needed some straightening (a different head) and it all came to about $300.

This was about 5 years ago tho...
 

Charlie97L

New Member
Jul 16, 2005
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Clarksburg, MD
Satan said:
FWIW...

I used Eiesley's Machine in Tampa (Brandon), FL...

I supplied the valve stem seals and they did the rest... valve job, seals replaced, cleaned, etc... Came out to less than $200.

The 2nd time, I needed some straightening (a different head) and it all came to about $300.

This was about 5 years ago tho...

satan, how long was the turnaround on that?
 

rakkasan

Currahee!!
Mar 31, 2005
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Fort Campbell, KY
I had mine rebuilt about a year ago. I supplied the seals, they did a 3 angle valve job, light port work, machined it for a MHG, completely reassembled it & set the valve clearances for $275. The same shop is doing the machine work on my block now.
 

tubbie

Yes, powerful Jedi....
Apr 4, 2005
821
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Hoschton, GA
Got mine from a shop in texas that sells on ebay. It's a fully rebuilt head, looked excellent and so far is excellent. $450 shipped and it comes in a box. Stick yours back in it and they come pick it up.