Anyone have a picture of a TRD head compared to a stock head? I wanted to know if the exhaust/intake ports are bigger.
Thanks!
Thanks!
TRD head comparison?
- Thread starter sabersupra
- Start date
No such thing as a TRD head. I don't care what you read elsewhere.
There was a car built for homogolation in group A. That had a more rounded, as in hemispherical, combustion chamber as opposed to a traditional pentroof. At least that is how it looks in the picutres.
There was a car built for homogolation in group A. That had a more rounded, as in hemispherical, combustion chamber as opposed to a traditional pentroof. At least that is how it looks in the picutres.
TRD stuff for a mk3 is damn near non existant, I have the oil filler cap, thats about it I think they had brakes avalible and possible strut tower brace maybe some other things but IDK, as far as an engine block or head I don't think they had any
i think we all have one of those.Wills7MGTE;1117468 said:
yessir. I've never heard of TRD making a special head, especially for the 7M. As stated, you're probably talking about the Group A heads...are the Turbo A heads the same as the standard 7M head?Wills7MGTE;1117468 said:
This is a stock head and a group a head. I am not posting the link. It has just enough info to get somebody into trouble.
The author calls the stock head a TRD head. It isn't. TRD never did that. Back in the late 80's, TRD sold parts of aftermarket companies like HKS.
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The author calls the stock head a TRD head. It isn't. TRD never did that. Back in the late 80's, TRD sold parts of aftermarket companies like HKS.
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I did a BHG on a turbo A and took the head in and measured it against a
91 model 7mge head(cressida grande) It was identical.Your money is much better spent on a fresh head and refitting it with whatever you feel is suitable for the type of application your engine will be used for.Most cases some smoothing of the ports and matchporting intakes is enough for the standard street build.After that its up to your bank balance.:biglaugh:
91 model 7mge head(cressida grande) It was identical.Your money is much better spent on a fresh head and refitting it with whatever you feel is suitable for the type of application your engine will be used for.Most cases some smoothing of the ports and matchporting intakes is enough for the standard street build.After that its up to your bank balance.:biglaugh:
Nick M;1117973 said:
I guess both these pictures from my site. I apologize if I disinformed somebody, actually while 3 years ago I was shopping for good flowing cylinder head I contacted Jose Maeso, some of you may know this guy from Puerto Rico, he is specialist of getting unobtainable super rare 7M stuff from Japan. Jose offered me to buy used TRD head. He e-mailed me 2 photo, one posted by Nick M (combustion chamber with squish pads) and this:
Additionally he said there were only few made, head included sodium filled standard size valves, 11.5mm lift cams, shim under bucket, bigger water holes, etc.
If all this stuff was not documented now difficult to prove if there was such thing as "TRD head" and how it looked like.
As for me I later bought head ported by Revolutionary Performance and fitted it with Ferrea valvetrain parts and 272 Toda cams.
Just enough info to get somebody into trouble wasn't a slap at you. Just some of the clowns here.
Looks like they took a stock casting and CNC'd the combustion chambers, and probably did whatever else (like the water passages) by hand with a grinding tool. Just a guess.
van supra is suppost to have group a head i wounder if ti has all ehat has bena done to that head
Nick: The head in the top pic doesn't quite look like a stock 7m head, either. Seems to have had quite a bit of work done to it as well? Maybe a difference between early and later model heads?
Edit: Here's a decent pic of a stock, pre89 combustion chamber:
There's a bit of a difference in the sides.
Edit: Here's a decent pic of a stock, pre89 combustion chamber:
There's a bit of a difference in the sides.
humm i knew there were diffetn casting of heads but the combustion caber are diffetn in some yeasr never knew this and i have bena around for some time
The more I look, the more I see that it's a reworked stock head... Someone took a stock head and worked it as a replica of the Group-A head. Has the same mark next to the sparkplug hole on both...