12 valve head

superdutycummins · 11-03-2009, 10:14 PM

Where is a good place to buy a head? Ive got three blocks, had two heads. Both heads are cracked really bad.

I need one asap, just wondering where a good place to get one would be, without going to CUMMINS. I really dont want a used head, unless someone here has one that they know is good.

. Any help would be greatly appreciated.

__________________
2001 Ford F-550 4x4 crewcab, 12 valve cummins, zf-6, 5" stacks, egt, pyro, boost, water temp, tranny temp auto meter guages, some injectors, no fuel plate, SBDD clutch, much more!! CRACKED HEAD and SCORED BLOCK

New engine is here, Industrial block and head!!

Busted Knuckles · 11-04-2009, 04:52 PM

Pure Diesel Performance

__________________
96' 3500 Reg Cab 4x4 Leveled on 35"s HX35/40 Hybrid, Custom intake box w/ AFE BHAF, O-Ringed Head, Ported exhaust, 4" turbo back, 5x12's, #0 Plate, Gutted AFC

ykdave · 11-04-2009, 05:07 PM

dare i say it.... ebay...

__________________
97 Ram 2500 / 5.9ctd /NV4500/241DHD
Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

deck60 · 11-04-2009, 07:18 PM

go to car-part.com they are a search eninge for salvage yards just put in your info and it will bring up all yards that have the parts

__________________
98 one ton dually extended cab 4x4 mostly stock 60 hp bosch injectors and 245/75/16 tires this is a farm truck it is hooked to a trailer just about all the time and we use 5 th wheel trailers -- Diesel the only way to go

1bad12v · 11-04-2009, 11:42 PM

i got one if you are interested. and a block..... pm me

__________________
'95 2500 4x4 12V Cummins

HEEPJEEP · 11-04-2009, 11:46 PM

Quote:

Originally Posted by superdutycummins

Where is a good place to buy a head? Ive got three blocks, had two heads. Both heads are cracked really bad.

I need one asap, just wondering where a good place to get one would be, without going to CUMMINS. I really dont want a used head, unless someone here has one that they know is good.

. Any help would be greatly appreciated.

Where are they cracked/cracking?

__________________
'97 4x4, 12 v, SC/LB work truck/DD probably a bad P7100 pump... Goerend VB and triple disc, Suncoast rebuild, Billet in/out, billet flex plate, 62/65/13ss +S475, Weston's 5x.014's

superdutycummins · 11-05-2009, 12:29 AM

I dont know where they are cracked. I dropped them off at the machine shop the other day to get a valve job on both of them and they called back yesterday and said that they are cracked. Said they might be fixable, but it would be cost prohibitive. Ill find out where they cracked when I go pick them back up. I know there werent any visible on the face of the head. When I dropped them off, the guy even said they looked good, so it must be internal.

Ive heard bad things about those ebay heads. Or the new aftermarket ones anyhow. I checked last night and didnt see any used ones. A salveage yard close by has one Im going to look at tomorrow.

__________________
2001 Ford F-550 4x4 crewcab, 12 valve cummins, zf-6, 5" stacks, egt, pyro, boost, water temp, tranny temp auto meter guages, some injectors, no fuel plate, SBDD clutch, much more!! CRACKED HEAD and SCORED BLOCK

New engine is here, Industrial block and head!!

Busted Knuckles · 11-06-2009, 12:48 AM

Stock 12v parts for sale

__________________
96' 3500 Reg Cab 4x4 Leveled on 35"s HX35/40 Hybrid, Custom intake box w/ AFE BHAF, O-Ringed Head, Ported exhaust, 4" turbo back, 5x12's, #0 Plate, Gutted AFC

Hercules · 11-06-2009, 01:32 AM

99% of time you will not be able to see the cracks without magnafluxing the head. It's the simple process of placing an electromagnet on the head and "sprinkling" iron filings between the two points of contact of the electromagnet. The filings we use have a yellowish tint added so that it is easy to see the cracks. The iron filings will line themselves up along any cracks that exist. If the cracks exist extending from a bolt hole or water passage, the head is junk. There's no real "fix" that's going to stop them from continuing their growth. If the cracks are in the valve seats, then it's a judgement call. Most those cracks are tiny and easily removed when grinding the seats during the valve job. I did a 24v head last week that I had found 56 cracks in the valve seats. The owner OK'ed continuing on to the valve job with the understanding that new seats may be necessary to correct the problem. All 56 tiny cracks ground out with the valve job. The only reason we continued was because none of the cracks extended past the seats...either into the ports or into the chamber. If they had done that, the head would have been junk. Ideally, I prefer to replace the seats where tiny cracks are found. Like I mentioned above, you have to really look at where the cracks are, how big are they(tiny ones on the seats are normally just on the surface), and what direction are they headed. It's usually pretty obvious if the head can salvaged or not when the seats are involved. If the cracks are somewhere other than the seats, junk the head. You'll be better off in the long run.

__________________
'97 Dodge Ram 2500 4x4 12 Valve, 215 Pump, 16 deg Pump Timing, NV4500 5-speed, ISSPRO Gauges, #10 Plate, AFC Spring Kit, Amsoil #4510 BHAF, 4" Turbo Back Exhaust, KDP more to come...

11-03-2009, 10:14 PM	#1 (permalink)
superdutycummins Cummins Fanatic Join Date: Nov 2007 Location: Nashville, IL Posts: 150 Thanks: 0 Thanked 2 Times in 2 Posts superdutycummins's Truck Pics	12 valve head Where is a good place to buy a head? Ive got three blocks, had two heads. Both heads are cracked really bad. I need one asap, just wondering where a good place to get one would be, without going to CUMMINS. I really dont want a used head, unless someone here has one that they know is good.. Any help would be greatly appreciated. __________________ 2001 Ford F-550 4x4 crewcab, 12 valve cummins, zf-6, 5" stacks, egt, pyro, boost, water temp, tranny temp auto meter guages, some injectors, no fuel plate, SBDD clutch, much more!! CRACKED HEAD and SCORED BLOCK New engine is here, Industrial block and head!!

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11-04-2009, 04:52 PM	#2 (permalink)
Busted Knuckles Cummins Enthusiast Join Date: Sep 2009 Location: Tyler, TX Posts: 204 Thanks: 3 Thanked 8 Times in 8 Posts Busted Knuckles's Truck Pics	Pure Diesel Performance __________________ 96' 3500 Reg Cab 4x4 Leveled on 35"s HX35/40 Hybrid, Custom intake box w/ AFE BHAF, O-Ringed Head, Ported exhaust, 4" turbo back, 5x12's, #0 Plate, Gutted AFC

11-04-2009, 05:07 PM	#3 (permalink)
ykdave Diesel Head Join Date: Feb 2008 Location: Yellowknife, NT, Canada Posts: 3,853 Thanks: 0 Thanked 76 Times in 62 Posts ykdave's Truck Pics	dare i say it.... ebay... __________________ 97 Ram 2500 / 5.9ctd /NV4500/241DHD Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

11-04-2009, 07:18 PM	#4 (permalink)
deck60 Newbie Join Date: Oct 2009 Posts: 23 Thanks: 0 Thanked 0 Times in 0 Posts deck60's Truck Pics	go to car-part.com they are a search eninge for salvage yards just put in your info and it will bring up all yards that have the parts __________________ 98 one ton dually extended cab 4x4 mostly stock 60 hp bosch injectors and 245/75/16 tires this is a farm truck it is hooked to a trailer just about all the time and we use 5 th wheel trailers -- Diesel the only way to go

11-04-2009, 11:42 PM	#5 (permalink)
1bad12v Cummins Nut Join Date: May 2008 Location: Palm Beach Posts: 418 Thanks: 1 Thanked 5 Times in 5 Posts 1bad12v's Truck Pics	i got one if you are interested. and a block..... pm me __________________ '95 2500 4x4 12V Cummins

11-05-2009, 12:29 AM	#7 (permalink)
superdutycummins Cummins Fanatic Join Date: Nov 2007 Location: Nashville, IL Posts: 150 Thanks: 0 Thanked 2 Times in 2 Posts superdutycummins's Truck Pics	I dont know where they are cracked. I dropped them off at the machine shop the other day to get a valve job on both of them and they called back yesterday and said that they are cracked. Said they might be fixable, but it would be cost prohibitive. Ill find out where they cracked when I go pick them back up. I know there werent any visible on the face of the head. When I dropped them off, the guy even said they looked good, so it must be internal. Ive heard bad things about those ebay heads. Or the new aftermarket ones anyhow. I checked last night and didnt see any used ones. A salveage yard close by has one Im going to look at tomorrow. __________________ 2001 Ford F-550 4x4 crewcab, 12 valve cummins, zf-6, 5" stacks, egt, pyro, boost, water temp, tranny temp auto meter guages, some injectors, no fuel plate, SBDD clutch, much more!! CRACKED HEAD and SCORED BLOCK New engine is here, Industrial block and head!!

11-06-2009, 12:48 AM	#8 (permalink)
Busted Knuckles Cummins Enthusiast Join Date: Sep 2009 Location: Tyler, TX Posts: 204 Thanks: 3 Thanked 8 Times in 8 Posts Busted Knuckles's Truck Pics	Stock 12v parts for sale __________________ 96' 3500 Reg Cab 4x4 Leveled on 35"s HX35/40 Hybrid, Custom intake box w/ AFE BHAF, O-Ringed Head, Ported exhaust, 4" turbo back, 5x12's, #0 Plate, Gutted AFC

11-06-2009, 01:32 AM	#9 (permalink)
Hercules Cummins Fan Join Date: Sep 2008 Posts: 40 Thanks: 0 Thanked 0 Times in 0 Posts Hercules's Truck Pics	99% of time you will not be able to see the cracks without magnafluxing the head. It's the simple process of placing an electromagnet on the head and "sprinkling" iron filings between the two points of contact of the electromagnet. The filings we use have a yellowish tint added so that it is easy to see the cracks. The iron filings will line themselves up along any cracks that exist. If the cracks exist extending from a bolt hole or water passage, the head is junk. There's no real "fix" that's going to stop them from continuing their growth. If the cracks are in the valve seats, then it's a judgement call. Most those cracks are tiny and easily removed when grinding the seats during the valve job. I did a 24v head last week that I had found 56 cracks in the valve seats. The owner OK'ed continuing on to the valve job with the understanding that new seats may be necessary to correct the problem. All 56 tiny cracks ground out with the valve job. The only reason we continued was because none of the cracks extended past the seats...either into the ports or into the chamber. If they had done that, the head would have been junk. Ideally, I prefer to replace the seats where tiny cracks are found. Like I mentioned above, you have to really look at where the cracks are, how big are they(tiny ones on the seats are normally just on the surface), and what direction are they headed. It's usually pretty obvious if the head can salvaged or not when the seats are involved. If the cracks are somewhere other than the seats, junk the head. You'll be better off in the long run. __________________ '97 Dodge Ram 2500 4x4 12 Valve, 215 Pump, 16 deg Pump Timing, NV4500 5-speed, ISSPRO Gauges, #10 Plate, AFC Spring Kit, Amsoil #4510 BHAF, 4" Turbo Back Exhaust, KDP more to come...