I got a few parts on the weekend, and a couple were some T1 intakes.
as I happened to look at one while I was putting them away, I had noticed that the bumps at the injectors were very minimal, as if the intake was already ported....but it was still factory casting???
the difference was huge. I was curious as to where these intakes come from??? i did notice the one with the big bumps was an ACE CO casting, where the nicer free flowing was a non ACE CO casting.....
PICs please!!!
Probably just a newer casting. They used a vacuum forming for the sand mold. Piano plates come out totally smooth now ready for finishing instead of hours of grinding and filling.
I wonder when they will start using 3D printing for making molds?
they appear to have the same part number
ACE CO CASTING
FREAK CASTING
Damn, you found one of my little NHRA stock-class secrets...
I have 2 or 3 of these now. I don't know when the 'good' casting came out vs. the 'bad'. But, every time I see a 1-pc at a swap meet or junkyard, I check it to see if it's a 'small bump' manifold - and I buy it if it is. The '05-8950' number is the supplier code, I believe. But, I don't know who that is. It could be a difference in Mexico vs. US castings. I know there are a lot more of the 'Ace Co' castings around.
Since I run stock class and can't port anything, every little bit helps. It would be interesting to see if there is an actual difference on a flow bench.
FWIW, the 'Ace Co' makes a lot of the older (and some of the not-so-older) aluminum castings for Chrysler. The balance shaft carrier (even the one in my 2.4) is made by the same company, and i thought one other part? I'll have to go look again...
EDIT: I think this was the 'Ace Co' company - http://www.akama.com/company/Aluminu...4d1622979.html - doesn't look like they exsist anymore. Since it was an American-based casting company, I would assume that the 'small bump' manifold came from Mexcio.
I think my intake i ported was the freak one you speak of, i will recheck it when i get it back from Simon's welder. I will dig threw my stash and see if there is another one.
^hi, im the welder.
LOL yup he is the welder!!!!Originally Posted by shayne
Yup, yup, lol.
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