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Thread: 18rg pistons in a 2tg?

  1. #16
    Too old to be a Grease Monkey
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    Default Re: 18rg pistons in a 2tg?

    Thanks for that info W
    I am on a really tight budget here so I think that bore out and hone for the 18rg pistons is the go.
    I am not super concerned how much power this engine makes as it is only my first build. I would rather stay a little conservative and perhaps for the next one I build (if I do another) I may go the stroke etc way.

    I have a couple of blocks available but the one I want to use has a little damage and the 18rg pistons should cover that.
    I want to avoid having to mill anything down because I dont want to waste money so I am hoping that it just fits together.

    Cheers
    Nathan

  2. #17
    Junior Member Domestic Engineer 71TA22's Avatar
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    Default Re: 18rg pistons in a 2tg?

    Did this back in the 80's when 3T parts were still expensive. Only had to mill the valve pockets and get a one off gasket made for the RG pistons.
    Mike
    71 TA22

    My Car

  3. #18
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    Default Re: 18rg pistons in a 2tg?

    Thanks 71. do you remember how deep you milled the valve pockets?
    I am trying to get away without milling the pistons? but will put it together and see if they touch.

    Although I am looking at a set of 89mm 3t pistons ready to go... just a few questions for the owner then we could end up going that way as this 18rg thing is a little hazey?
    Cheers
    Nathan

  4. #19
    Junior Member Domestic Engineer 71TA22's Avatar
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    Default Re: 18rg pistons in a 2tg?

    Quote Originally Posted by Noof View Post
    Thanks 71. do you remember how deep you milled the valve pockets?
    It's so long ago I cant remember how deep we milled.

    If you have the 3T option (at 89mm bore) that is the better way to go.

    Your block from a 2TG or 2TGEU? If 2TG you will need to clearance the block and bores for the 3T crank.
    Mike
    71 TA22

    My Car

  5. #20
    Junior Member 1st year Apprentice rabbits's Avatar
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    Default Re: 18rg pistons in a 2tg?

    what car is it going into couldn't put a 18rg in? it would save you alot of time and money would also go hard

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