A460 head problem

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A460 head problem

Post  cool40 on July 3rd 2016, 12:04 am

I thought I had an intake gasket leak at the bash last month but it turns out a lot worse. I should have taken advice from Keith and Randy before I pulled the intake and pressurized it but I didn't so now I'm in it for another set of gaskets. Laughing i filled it with water before I started it and as it did at the race it filled #5 before I even tried starting it. I pulled the top off the intake and put air psi to the cooling system and whata ya know! I have no idea why this happened but it's leaking like sob! Mad Mad Surprised
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Re: A460 head problem

Post  68formalGT on July 3rd 2016, 9:07 am

Damn!! That's a lot of water!! Can it be welded?
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Re: A460 head problem

Post  rmcomprandy on July 3rd 2016, 9:30 am

It's aluminum so, it can be fixed. Just not a simple fix.

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Re: A460 head problem

Post  cool40 on July 3rd 2016, 11:00 am

I Hope it can be welded. I still have to pull it off and have a closer look but most likely the seat will need replacing. Suspect
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Re: A460 head problem

Post  Lem Evans on July 3rd 2016, 10:17 pm

Is this one of those I.U.D. heads?

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Re: A460 head problem

Post  cool40 on July 3rd 2016, 10:42 pm

Lem Evans wrote:Is this one of those I.U.D. heads?
yes it is. I may never get the intake off again after using that grey stuff and them cometic gaskets! Embarassed I'm gona try and pull the head tomorrow,Tuesday I have to deal with this knee repair and I'll be out of commission about a week. pale
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Re: A460 head problem

Post  whatbumper on July 3rd 2016, 11:57 pm

pretty much anything aluminum can be fixed. If no body else will do it locally I will for sure. We have all the machines to take care of you.

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Re: A460 head problem

Post  CHARLIEB on July 4th 2016, 12:05 am

Hey cool, sorry to hear the bad news about your motor. I hope everything work out for you and take care of that knee.
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Re: A460 head problem

Post  cool40 on July 4th 2016, 10:07 pm

So....after getting it off and the valve out I did some poking around and in no time the little hole turned into this , Shocked : it's thin around this area best I can tell. What a Face :
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Re: A460 head problem

Post  68formalGT on July 4th 2016, 10:20 pm

Lem Evans wrote:Is this one of those I.U.D. heads?

cool40 wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?
yes it is. I may never get the intake off again after using that grey stuff and them cometic gaskets! Embarassed I'm gona try and pull the head tomorrow,Tuesday I have to deal with this knee repair and I'll be out of commission about a week. pale

IUD?
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Re: A460 head problem

Post  cool40 on July 4th 2016, 10:22 pm

68formalGT wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?

cool40 wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?
yes it is. I may never get the intake off again after using that grey stuff and them cometic gaskets! Embarassed I'm gona try and pull the head tomorrow,Tuesday I have to deal with this knee repair and I'll be out of commission about a week. pale

IUD?
IDT Wink you just gota translate for Lem.
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Re: A460 head problem

Post  68formalGT on July 4th 2016, 10:36 pm

cool40 wrote:
68formalGT wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?

cool40 wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?
yes it is. I may never get the intake off again after using that grey stuff and them cometic gaskets! Embarassed I'm gona try and pull the head tomorrow,Tuesday I have to deal with this knee repair and I'll be out of commission about a week. pale

IUD?
IDT Wink you just gota translate for Lem.

Ahh, OK so it's not a TFS casting.
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Re: A460 head problem

Post  cool40 on July 4th 2016, 11:02 pm

68formalGT wrote:
cool40 wrote:
68formalGT wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?

cool40 wrote:
Lem Evans wrote:Is this one of those I.U.D. heads?
yes it is. I may never get the intake off again after using that grey stuff and them cometic gaskets! Embarassed I'm gona try and pull the head tomorrow,Tuesday I have to deal with this knee repair and I'll be out of commission about a week. pale

IUD?
IDT Wink you just gota translate for Lem.

Ahh, OK so it's not a TFS casting.
no it's an eliminator casting with IDT CNC porting. maybe the name has an affect on the hole in it?
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Re: A460 head problem

Post  dtimmer on July 5th 2016, 12:38 am

Eh that's an easy fix. No need to replace the seat if the welder is any good. Question is, how thin are the rest

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Re: A460 head problem

Post  cool40 on July 5th 2016, 12:56 am

dtimmer wrote:Eh that's an easy fix. No need to replace the seat if the welder is any good. Question is, how thin are the rest
Question exactly Suspect
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Re: A460 head problem

Post  rmcomprandy on July 5th 2016, 9:49 am

cool40 wrote:
dtimmer wrote:Eh that's an easy fix. No need to replace the seat if the welder is any good. Question is, how thin are the rest
Question exactly Suspect

You should only bother yourself with the problem at hand.  If it ain't broke ... don't fix it.

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Re: A460 head problem

Post  dtimmer on July 5th 2016, 10:00 am

Doesn't hurt to poke around with something sharp in the other ports. If it's just as thin, it will break thru eventually. Why do it twice?

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Re: A460 head problem

Post  Wheelie58 on July 7th 2016, 6:36 am

Might be a good idea to sonic test the other ports in that area.
Depending on the size of the "thin" area, it could get tricky during welding, requiring a larger area to be V'ed out and filled.
My experience with welding near the valve seat...the seat may need to be removed. The heat could distort the seat pocket resulting in a change in press fit. Worse case it would require re bore of the seat pocket after welding and a larger OD seat installed.
For sure can be fixed.
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Re: A460 head problem

Post  cool40 on August 5th 2016, 12:43 am

Repaired! Now if it doesn't leak I'll be set! cheers :
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Re: A460 head problem

Post  68formalGT on August 5th 2016, 1:15 am

Looks like new!
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Re: A460 head problem

Post  Lem Evans on August 5th 2016, 10:41 am

Did you send it to Fabio?

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Re: A460 head problem

Post  cool40 on August 5th 2016, 1:47 pm

Lem Evans wrote:Did you send it to Fabio?
no but it is scratched up ain't it! Laughing
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Re: A460 head problem

Post  gt350hr on August 5th 2016, 2:41 pm

Just goes to show CNC's don't pay attention to core shift. They just do what they are told to do. Glad you got it fixed. I had a similar problem with some Ford Racing heads in the spring pocket area. Both heads, same pocket ( position) , had to be core shift. Fixed five years ago and still perfect.

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Re: A460 head problem

Post  whatbumper on August 5th 2016, 11:17 pm

We just welded up every port in a set of c3 heads due to core shift and a head porter that goes by the if it's bigger the ports better theory. Lol

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Re: A460 head problem

Post  cool40 on August 7th 2016, 10:09 pm

Well this sob leaked!! Mad Mad I did check it with air psi after I bolted it down so it ain't as bad but now I gota deal with it again. My tig torch won't fit in the port so I guess I'll buy a smaller one and see how my luck is at doing it myself. Suspect
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