North American Turbocoupe Organization



Need head building advise
trashline Offline
Posting Freak
#1
tomorrow will be the first time i step into a machine shop. Ive checked the head and it is warped by at least .005 of an inch. right where the HG blew. I will be rebuilding the head to stock specs. reason being the block looks good but it is the original bottom end and i dont want to kill that either. i measured with a .006 feeler gauge and a straight edge. my uncle is gonna check it tomorrow just to make sure. b/c if the block is warped then im gonna just slap the new HG on and be done with it. but i can dish out some money to ge tthe head rebuilt. new cam b/c this one is bad springs valves and clean the head with the minimal milling done to it. im more or less looking for an avergae price todo this . no porting or polishing and hogging out anything. if you know. i want togo in there and have an idea of wha ti want done and what i need and a price so that way i dont get riped.

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1966 mustang
1988 tbird
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
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Pete D Offline
Administrator
#2
You need to make a list of the stuff you have to have and then list the nice to do stuff and get quotes, up fron, on all of it.
If you got over 100K on the head, I would get it:
1. checked for cracks around the exhaust seats.
If it passes that then:
2 get it hot tanked, checked for flatness and valve guide wear or lack of.
3. Hot tanking will require removal of the cam bearings and install of new ones after. A year ago I was paying around $12 for the bearings and $25 to install. Be sure they get the oil holes in the bearings lined up with the supply holes in the cam bearing journals
4.Get a valve job - $40 to 60
5. If it needs milled - probably around $40-60 - get quotes on all this up front

Are you going with a new stock cam? If so you will need new followers and new prings. If it's a slider cam you will have to break it in.

You will new new valve stem seals.
Pete Dunham


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trashline Offline
Posting Freak
#3
Pete thats a great start for a list. Ive called two reputable machine shops one does head specific work and the other all motor work.

the head specific shop said 200 bucks to rebuild the head + parts

the second place said 105 plus parts.

im willing to spend the more money for the better work. but Im not getting anything done to it. My uncle said take it to penndel which is the regular machine shop. 105 plus parts and the guy said probably about 240 for everything . what should i tell them to make sure they do on just a stock rebuild? including all new parts.

cam, bearings, followers, valve seals ,springs, valves

the 105 comes with everything magging the block cleaning it valve job mill it. and so on.
should i ahve them cut the exhaust and intake surfaces? it might even come with it. i didnt ask on the phone. but he said around 240 bucks

------------------
1966 mustang
1988 tbird
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
Reply

Pete D Offline
Administrator
#4
A proper valve job should include grinding the seat face of the valves and a proper 3 angle grind of the valve seat. Anything less is shortcutting. The 3 angle cuts on the valve seat are to 1. get the correct seat width and 2. aid the transitions for better flow. You do not need a 5 angle grind for a stock or street head.

Quote:cam, bearings, followers, valve seals ,springs, valves

With reasonable luck, you should not need new valves. Maybe 1 or 2 at worst. All the other items you listed should be replaced with new.

$105 + parts sounds a little cheap to me.
Make sure they are going to:
1. Mag it
2. Does that price include milling, IF NEEDED
You only want enough taken off to make it flat. You are not milling it to raise compression
3. Does it include a 3 angle grind on the valve seats, not just a 1 angle cut.
4.Are they going to check cam/follower clearances upon assembly and shim if necessary. (Probably not for $105, it a bit time consuming to do.)
5. Does it include install on the new cam bearings? If they tell you that you won't need new cam bearings, that means they aren't going to hot tank it which is shortcutting.

At NAPA I paid approx $40 for springs. You may want to have them put in new keepers (valve lock) They are cheap.

I would talk to both places again and press for a written itemized quote.
Pete Dunham


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Thndrchckn420 Offline
Senior Member
#5
I got SS oversized exhaust valves for @ $45 shipped with locks. Not a bad deal if you want a little extra kick to the turbo.

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White 88 5-spd. loaded w/o leather. .60/.63 T-3, full 3" exhaust, ported big exhaust valve head, ranger roller cam, K&N in front of the radiator, gutted upper, knife edged lower. Future mods...EEC tuner, wideband O2, lots to do on the suspension.
88 5-spd. Precision SC-50 ball bearing turbo, gillis, full 3" exhaust w/ 3- 1/2 crome tip, ported E-6, ported big exhaust valve head, ranger roller cam, Essy cam gear, K&N cone in front of the radiator, gutted upper, knife edged lower, Walbro 255HP pump, Kirban AFPR, Forge BPV, PA Performance 130 AMP Alt...
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trashline Offline
Posting Freak
#6
i dont want any extra anything i just want it stock. people have been trying to get me todo upgrades and extra stuff. nothing against you but il be happy with it stock. i appreciate the help. though the bottom end is in good shape no scores and the cross hatching is still there.pistons are clean. the head is just gonna get rebuilt b/c i dont want to mess around with it and cutting things and this and that.

------------------
1966 mustang
1988 tbird
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
Reply

Thndrchckn420 Offline
Senior Member
#7
Theres something to be said for that too. Id love to have a bone stocker, but it would have to be mint. Cant afford it though. So far with all my parts, the car, and everything, I have about $700 dollars in the TC I have now. Stock seems so much more expensive.

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White 88 5-spd. loaded w/o leather. .60/.63 T-3, full 3" exhaust, ported big exhaust valve head, ranger roller cam, K&N in front of the radiator, gutted upper, knife edged lower. Future mods...EEC tuner, wideband O2, lots to do on the suspension.
88 5-spd. Precision SC-50 ball bearing turbo, gillis, full 3" exhaust w/ 3- 1/2 crome tip, ported E-6, ported big exhaust valve head, ranger roller cam, Essy cam gear, K&N cone in front of the radiator, gutted upper, knife edged lower, Walbro 255HP pump, Kirban AFPR, Forge BPV, PA Performance 130 AMP Alt...
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Matt S Offline
Posting Freak
#8
A little over a year ago I paid $350 plus tax for the job Pete described. My head was (is [Image: biggrin.gif] ) flat and the cam etc was fine to reuse.
Sold it Sad*
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trashline Offline
Posting Freak
#9
Quote:Originally posted by Thndrchckn420:
Theres something to be said for that too. Id love to have a bone stocker, but it would have to be mint. Cant afford it though. So far with all my parts, the car, and everything, I have about $700 dollars in the TC I have now. Stock seems so much more expensive.


thats why... i have 2 grand in mine including the price of the car.

500 for car
650 for trans
100 for rack and pinion
170 for clutch kit
565 for tires
200 for little parts (oil filter, gillis and things of this nature)
so the old man had a fit and said this is it head rebuilt or throw the HG on it and drive it. so 240 for the rebuilt head it is. i dont what they do to it. as long as its flat and will last longer then 50,000 miles.



------------------
1966 mustang
1988 tbird
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
Reply





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