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 Engine head port and polish?

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c0reyl
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PostSubject: Re: Engine head port and polish?   Thu Mar 15, 2012 4:20 pm

Oh I wouldn't even need a stage 2 probably lol. I was just showing the heads of the same price lol

And that's not a bad idea. Thanks
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LARRY70GS
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PostSubject: Re: Engine head port and polish?   Thu Mar 15, 2012 4:22 pm

c0reyl wrote:
And they don't have aluminum heads for a 3800 I'm guessing?

No, they don't even have aluminum heads for the the small block Buicks(350) yet, and those guys have been waiting for awhile. There are aluminum heads for the 3.8 and 4.1 Turbo GN engines. They won't fit the 3800 engines though.

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PostSubject: Re: Engine head port and polish?   Thu Mar 15, 2012 4:28 pm

Super lame. Makes me wish that an LSx swap was easy with the 4t80e lol. Probably would be cheaper to do that to make huge power...which would be too much anyway, so.... probably just top swap and cam will happen. I wouldn't want the car to go much faster than mid 13's anyway.

Edit: that first part was sarcasm by the way.
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LARRY70GS
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PostSubject: Re: Engine head port and polish?   Thu Mar 15, 2012 4:43 pm

turtleman wrote:
The only heads I'm aware of that aren't born stock in a GM plant are the aluminum heads ZZP makes. They went through a lot of trouble to improve on the original design but the cost is astronomical by the time you're done.

Codith,
So there are aluminum 3800 heads? How much is astronomical? Kind of surprised, as the aluminum heads for my 455 cost about what a fully ported set of irons cost, and the aluminums out flow the irons right out of the box.

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PostSubject: Re: Engine head port and polish?   Fri Mar 16, 2012 3:10 am

LARRY70GS wrote:
turtleman wrote:
The only heads I'm aware of that aren't born stock in a GM plant are the aluminum heads ZZP makes. They went through a lot of trouble to improve on the original design but the cost is astronomical by the time you're done.

Codith,
So there are aluminum 3800 heads? How much is astronomical? Kind of surprised, as the aluminum heads for my 455 cost about what a fully ported set of irons cost, and the aluminums out flow the irons right out of the box.

I don't even know what you'd pay for a set if you wanted to order them right now but for out of the box (no porting), it's already more than IS4 heads that as a package flow better (I believe). Additional work to the aluminums (porting) which is more money on top of the purchase price make them the ultimate heads though if you have the coin.
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PostSubject: Re: Engine head port and polish?   Fri Mar 16, 2012 3:18 am

They cost more than 2 grand? And I probably wouldn't need them. If I have anywhere near a 5 second 0-60 and maybe mid 13 quarter mile time im happy.

Im not trying to make the Buick a supercar lol
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PostSubject: Re: Engine head port and polish?   Mon Sep 17, 2012 2:04 am

So people have told me more than a few times that it's a bad idea to try DIY head porting and such, but after custom making a pipe for "tobacco use only" as my friend's birthday gift, out of a sink pipe valve part, it doesn't seem all that hard.



Chipped it up a bit and used a hacksaw to cut off the valve stem before I realized it was impossible to take that big nut off.



used a dremel to basically reshape it entirely, and I had to grind nearly everythign inside that bulging area because it was nearly solid metal, lol.



Oh hey, that looks kinda like a valve job doesn't it? :o The space inside there was almost all solid metal and everything was seized up so it was pretty much like it was solid metal >_>



Smoothed it out a lot, and this will be the finish of the final product most likely with a sealant applied.



After I get a hold of a trumpet mouth piece to solder in the top, and solder a copper plate to the end, I'm pretty much done. By the way, that knobb on the side can be unscrewed to act as an air vlave to precisely control air flow if the user so wishes happy


So the reason I showed that is other than the heads being iron and that was copper and brass, how much harder would it really be to do some DIY mild head porting besides the massive amount of time involved? Some time later in the next few weeks I wanna try porting some stuff on the spare L36 that needs a rebuild anyway, lol
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PostSubject: temp   Mon Sep 17, 2012 9:24 am

Quote :
Oh hey, that looks kinda like a valve job doesn't it?
Maybe if you're stoned, it kinda would. If you want to learn how to port & polish a set of heads, just get a set and try. Wait, did you really just do a write-up on how to make a bowl?

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PostSubject: Re: Engine head port and polish?   Mon Sep 17, 2012 9:40 am

dis is too funny smoke
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PostSubject: Re: Engine head port and polish?   Mon Sep 17, 2012 5:36 pm

I did :o

But, the fundamentals are pretty much the same, and I don't smoke even Tabacco, much less anything else, lol.

The huge differences I see are the fact that the metal I used is much softer, I have a lot more space to work with and see my work on the engine, and A big mistake ruins the engine part (which won't be on my currently working engine)

Iv'e made lots of stuff like that for friends before, and What's wrong with taking a garbage scrap from a broken sink part and making it something unique and priceless for a friend? :/
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