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Thread: 7afe h/g vs TRD h/g

  1. #1
    Junior Member Automotive Encyclopaedia
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    Default 7afe h/g vs TRD h/g

    saw a post here a while back where some one here said the 7afe h/g is the same part as the TRD h/g. thought that was a little odd... so i finally got around to checking it out

    as you can see from the pics they are not the same. quite different in places.
    im not going to say the 7afe one will not work with a 4age head, as i havnt tried it on a head, however looking at the differnece in the oil galleries i would think it wouldnt be the best. price difference between them is only about $20
    any way, the pics:

    7afe

    7afe

    TRD

    TRD

  2. #2
    back into it Chief Engine Builder
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    Default Re: 7afe h/g vs TRD h/g

    um, the 7a ones work fine with 25psi boost and on 4age and 7ag atmo race engines and they are $70 trade.
    If you dont know anything about gaskets or engines get a TRD one If you have even a tiny bit of skill or knowledge and dont want to waste extra money on a Trd gasket when a 7a one does exactly the same job.
    From memory the TRD gaskets are $120 so you save $50{which is nearlly a set of Rod bearings}

    But people should make there own choices, i just know what works from experiance.

  3. #3
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    Both gaskets are cheaper in NZ remember KM.
    -Chris | Garage takai - Breaking cars since 1998
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  4. #4
    back into it Chief Engine Builder
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    Default Re: 7afe h/g vs TRD h/g

    bloody NZ,lucky bastards! lol but i would the diffrence in price would still be tha same percentage.

  5. #5
    Junior Member Automotive Encyclopaedia
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    Default Re: 7afe h/g vs TRD h/g

    also mick 7ag is fwd and the trd 1 is for rwd 4age ,so there is enough difference ,same with fwd 3sge and the rwd altezza 3sge completely different h.gaskets ,you will find mostly in the water passeges bigger at the front 1&2 cyl on a fwd and bigger on back 3&4 cyl on rwd
    my 5 cents since there aint no 2 cents

  6. #6
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    Nah, RWD and FWD engines are the same head wise. They used the same head/block between the FWD AE82 and RWD AE86 setups.

    Oh yeah, and i remember when i enquired a while ago that the NZ TRD was about 10-15% cheaper than we get it for here, while the normal stuff is about the same price.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  7. #7
    Junior Member Automotive Encyclopaedia
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    Default Re: 7afe h/g vs TRD h/g

    your wrong chris

  8. #8
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    The part numbers for the FWD and RWD engines i have at home say otherwise.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  9. #9
    Junior Member Automotive Encyclopaedia
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    Default Re: 7afe h/g vs TRD h/g

    when we did steve 20 v from fwd to rear w/drive by changing water from the front to the back the 20 v gasket is different from the rear wheel drive TRD 1

  10. #10
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    Yeah, the TRD has slightly different water jackets in the head due to not having the front water outlet. The 16v engines are the same though.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  11. #11
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    Default Re: 7afe h/g vs TRD h/g

    i never said it wouldnt work, i also never said it would

    the price difference isnt a lot.
    also the 7afe one feels a lot flimsier than the 0.5mm TRD one. dunno if that means anything or not.

    prices in oz mean nothing in nz. but this wasnt about price, it was about some one saying they are the SAME. which they are not.

    all TVIS heads are the same castings, thats ae86 ae82, aw11 and early ae92s.
    the 20v gaskets are different.
    there are 2 TRD 16v gaskets, 0.5 and 0.8mm
    theres one 20v gasket of 0.8mm
    however as they are multi ply you can add or remove sheets.

    one thing i would be looking VERY closely is the oil galleries..... 7afe has smaller ones, and also some in slightly different places.

    my post was made to inform, not decide for others

  12. #12
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    Quote Originally Posted by Mr Revhead

    one thing i would be looking VERY closely is the oil galleries..... 7afe has smaller ones, and also some in slightly different places.
    Which is interesting, because its widely assumed that the 4A head will bolt directly to the 7A block. Ill be checking this one out in more detail when i get my 7A block.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  13. #13
    Junior Member Automotive Encyclopaedia
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    Default Re: 7afe h/g vs TRD h/g

    oh the head on the block definitly works.
    maybe i should have said 7afe gasket, as what i saud above could be interprted as me meaning the engine, which i do not know for sure as iv never looked into that side of things.

    ill im saying is some careful checking and thinking should be done when considering use and build
    Last edited by Mr Revhead; 13-10-2006 at 11:47 AM.

  14. #14
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: 7afe h/g vs TRD h/g

    Thanks for the info Mr Newzealand

    interesting stuff
    ...... butt scratcher?!


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