WHOA, McCoy ported heads have putty in the ports chipping!!! ---

alwayscode390

alwayscode390

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Hey Guys .... I have a set of McCoy ported l-35's ... stage 1. I was inspecting them this morning for cracks, ect and noticed that ONE of the heads has putty on the side wall of all 3 intake ports.

The problem is that the crap is WEAK, and started to chip off with minor pressure from my fingers (see the pics, its light yellow in color). I could see this causing MAJOR engine damage if it happened to chip off during engine operation. It seems like it got too hot and started to curl away from the side of the ports? It is only on one side , like a 1" high by 2" long patch ... as if they were OVERPORTED and then CORRECTED?

Do you guys think I should have my new shop grind all that shit out of there and leave it, or is there something else they could put in there that is better? I think I broke off all the weak spots....should I just leave it now? Thanks ---


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alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

I emailed him a few times regarding if the heads were milled or not and he just pushes me off to his "machine shop" guy who does the work I guess. I am sure they have done so many heads that they wont remember these specifically. ---

edit: I just emailed him the pics and the questions....I will update ---
 
jwaller

jwaller

Evil Genius/SyTy Guru
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

sounds like std mccoy work. I wouldnt use it they are junk.
 
alwayscode390

alwayscode390

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Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

Its crazy he charges $1500 + for "worked over stock heads" and they are rigged up!!! ---
 
nallj92

nallj92

Active member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

looks like they went into the water jacket porting it, and used some epoxy that breaks down with contact with fuel or something. Just break that shit up and JB weld the hole back, lol, no really, could try and have it welded? or find some other heads
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

Would the jb weld seriously work, or does it start to flake after time with gas exposure too?! I am hoping it was just done as a PRECAUTION and that it didnt actually go through to the water jacket :( ---
 
Luke

Luke

Fish sticks SUCK !!!
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

sound like you have a set of nice boat anchors there :tdown: that sucks
 
C

CKEITH

Doghouse Member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

i have a set of mccoy's vortec heads.....when i recieved them i was unimpressed. now i only paid 500.00 for them on ebay ready to bolt on but still very unimpressed. it took waller i know a good day and a half to straighten them out... :2cents:
 
C

Captain Morgan

Moderated User
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

jwaller said:
sounds like std mccoy work. I wouldnt use it they are junk.
Click to expand...
Agreed. There is a former SyTy owner who had Stage 3 heads done by McCoy years back. He got the heads, had them flow tested at a local shop before installing, everything was good, ran the truck, ect ect. Sometime down the road, something went sour on a different deal and McCoy said he would make it up to him by doing a "Stage 3 1/2" job on his heads for $XXX.XX instead of his normal price.

Next time the heads came off, he sent them out to McCoy to be ported once again. They came back and just like the first time had them flowed by the same local shop. The flow numbers turned out be exactly what they were the first time the Stage 3 heads were flowed a year earlier.

Needless to say, he basically spent $XXXX.XX to have the heads shipped, the carbon removed from the runners and shipped back to him.

That was his last transaction with McCoy.

alwayscode390 said:
Its crazy he charges $1500 + for "worked over stock heads" and they are rigged up!!! ---
Click to expand...
yes.
 
F

fastsuv

New member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

I have a set of L35's ported from McCoy also and I am having the same problem. Parts started to chip out and who knows what damage it did. Let me know if you find anything out.
Kevin
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

fastsuv said:
I have a set of L35's ported from McCoy also and I am having the same problem. Parts started to chip out and who knows what damage it did. Let me know if you find anything out.
Kevin
Click to expand...

Wait, so yours has the "putty" in them also and it is chipping away?! Damn.... is it in BOTH heads or just ONE like mine? Thanks ---
 
JSM

JSM

Active member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

Epoxy is commonly used in racing heads, etc. Welding of cast iron can be tricky, so epoxy is used to fill voids, change port shapes, etc.

If it is good on a daily driver, or if that is case there I don't have them in front of me, or know the intended purpose of the work done to them.

I do know on Jeremy's camaro drag car, his ports have a LOT of epoxy in them.
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

I will keep that in mind....I am just bumming out that the epoxy is coming off.

I have a nicely ported set of lt1 heads from Lloyd Elliot , stage 2 ... with no epoxy.... but the aluminum may be beefier to allow more material to be lifted without the use of epoxy too :) ---
 
F

fastsuv

New member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

I will have to check them tonight. I will let you know.
Kevin
 
jwaller

jwaller

Evil Genius/SyTy Guru
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

epoxy is a common practice in race heads but I would never consider it in anything thats Daily driven or even street driven for that matter. I also would be highly upset if it was not agreed to before hand and I recieved something that had been glued back together bc whoever didnt know WTF he was doing and screwed it up the first time.
 
JSM

JSM

Active member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

jwaller said:
epoxy is a common practice in race heads but I would never consider it in anything thats Daily driven or even street driven for that matter. I also would be highly upset if it was not agreed to before hand and I recieved something that had been glued back together bc whoever didnt know WTF he was doing and screwed it up the first time.
Click to expand...

I would agree, not saying in this application it is good, I don't know what the heads were sold for initially.
 
Maxtor

Maxtor

New member
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

Hand porting cast heads can be tricky, especially when you really start to hog out metal. I had a McCoy stage 3 vortec head crack a couple of years ago in the #3 and their comment was "you must have ran it lean", even though I always datalog my runs and it never "leaned" out or even came close to a lean condition. I can't say for certain whether or not it was ported too thin or somethinge else was the root cause, I guess the outcome was the same either way. They DID resolve it by making me another head for what I considered a reasonable price with a reasonable turn around and I haven't had any issues since. I don't think they are interested in the SyTy crowd anymore based on my personal experience, though (internet politically correct mode turned ON).

FWIW - If I were you, I would go with an unported set of Vortec's and ditch the L35's. It's a little more work up front but you will be much happier when you start tuning, not to mention they will probably flow better. Too many uncertanties with these heads in my book. Best of luck.
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: WHOA, McCoy ported heads have putty in the ports chipping!!! ---

The only thing making me feel that he overported the head is that ONLY ONE HEAD HAS EPOXY, lol....if it was supposed to be there....wouldnt the other head have it too?!

I was going to do vortecs but didnt want to spend $2500 on the setup , and didnt have a place to leave my truck while the heads/manifolds were off of it to be modded/ported. The l35's seemed like a perfect solution. These flow 250 intake and 190 exhaust which rival unported vortecs.

Thanks everyone .... I am sure I will figure something out to save these ---
 
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