I'd have to look around on SF and see if I can find it, but somone had a stock head reworked like that...
TRD head comparison?
- Thread starter sabersupra
- Start date
call rick kemp, at rick kemp engineering, in Arizona, he designed the 7m head. So if you want to know ask the source, also I would get my head work done there too, as I said he designed it, so he is a good person to have modify it.
IJ: What is that head from that you're showing in post #18? That seems like yet another different cut, with some pretty nice polishing work.
Interesting. Where is the number stamped on the head? I have one in the shop that I know is 89+ by how the divider is in the runners, but would like to know more about it.
There was still a 7m in 93? I thought that was the first year for the 2jz series.
There was still a 7m in 93? I thought that was the first year for the 2jz series.
It's cast at the front behind the tin cover and at the side above the intake ports.
My head was the last of the "stock" so was probably cast in 91>92.
My head was the last of the "stock" so was probably cast in 91>92.
Judging from the comments, I guess the pictures I've seen in the past were of a Group A head and not a TRD head as I believed.
Tellin yah, it's a modified stock head...
One of the rare times I will disagree with IJ on anything LOL
One of the rare times I will disagree with IJ on anything LOL
I can't see the whole head from the pic's, but given what I can see, I'd stand by my earlier post.
I doubt very much that it's anything other than a stock casting with CNC'd combustion chambers and fitted with aftermarket valves.
I like the shape of the chambers over stock. It would be interesting to see the flow numbers compared to stock heads.
I doubt very much that it's anything other than a stock casting with CNC'd combustion chambers and fitted with aftermarket valves.
I like the shape of the chambers over stock. It would be interesting to see the flow numbers compared to stock heads.
suprabad;1119456 said:
Ditto I'm guessing the quenchpads in the stock chamber are an emissions thing and aren't helping.
Just been looking at my cutaway head pics and there's plenty of meat in that area.
Hasn't anybody seen the "New" hemi head from Mercedes, or should I say Chrysler? They did the same as the 7M, with a less hemispherical chamber, and more quench.
Quench helps with the mixture, but those edges could cause hotspots.
I'd be interested to see what the difference in pistons is, as I have a feeling it's also a part of the puzzle...
I'd be interested to see what the difference in pistons is, as I have a feeling it's also a part of the puzzle...