Helicoil vs time sert - MR2 Owners Club Message Board
 
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post #1 of 9 (permalink) Old June 16th, 2019, 14:24 Thread Starter
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I'm getting ready to mate my e153 to a 2gr. With one hole needing to be threaded; What's everyone's opinion on helicoil vs time sert.

Also please confirm the size required. I believe it's m12 x 1.25. However is there a depth measurement as well?
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post #2 of 9 (permalink) Old June 17th, 2019, 04:37
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Originally Posted by Ap3xh3ro View Post
I'm getting ready to mate my e153 to a 2gr. With one hole needing to be threaded; What's everyone's opinion on helicoil vs time sert.

Also please confirm the size required. I believe it's m12 x 1.25. However is there a depth measurement as well?
I used a helicoil. M12x1.25 is correct. Use the same depth measurement as the other M12x1.25 mounting holes on the block. Mark off the drill bit with a piece of tape.
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post #3 of 9 (permalink) Old June 17th, 2019, 08:48
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Timeserts are probably stronger. But Helicoils are more than strong enough.


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post #4 of 9 (permalink) Old June 17th, 2019, 09:38
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I had never done a Timesert or Helicoil before and ended up going the Timesert route. Was really easy for a noob if that helps your decision at all.
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post #5 of 9 (permalink) Old June 17th, 2019, 17:54
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For my E53 I didn't have to use either. The only blank (untapped) hole in the block that lined up with a hole in the tranny was on the upper right (as you look at the block). I was able to use an MR2 Spyder front strut bolt (M14x1.5 IIRC), after drilling the hole a little larger and tapping to that thread / pitch. Perfect length; worked great.

Maybe the E53 bellhousing is different from the MK2's E153?

Jim
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post #6 of 9 (permalink) Old June 19th, 2019, 10:49
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For my E53 I didn't have to use either. The only blank (untapped) hole in the block that lined up with a hole in the tranny was on the upper right (as you look at the block). I was able to use an MR2 Spyder front strut bolt (M14x1.5 IIRC), after drilling the hole a little larger and tapping to that thread / pitch. Perfect length; worked great.

Maybe the E53 bellhousing is different from the MK2's E153?

Jim
That's the one I had to put the timesert in. You COULD tap it but the threads were just too shallow- no way it would give you a solid hold even though the bolt did thread in there. So timesert/helicoil or you could go with one size bigger bolt I suppose. Just easier and better to do the timesert/helicoil.

*EDIT* My motor came from a 2012 Highlander

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post #7 of 9 (permalink) Old June 19th, 2019, 17:35
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Ha ha why don't I muddy the waters even more. I did one 2GR-FE from a Camry and it did require that I drill and tap the hole to accept a helicoil for the bolt. Then I did one 2GR-FE from a RX350 and in the very same spot the hole was already there, ready to go. Ha ha.
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post #8 of 9 (permalink) Old June 19th, 2019, 20:21
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And mine was from a 2008 Highlander, which I thought was pretty much a clone of the RX350 underneath...
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post #9 of 9 (permalink) Old June 20th, 2019, 08:46
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My 2012 Rav4 motor had the hole (plain, no threads), but it was too large to tap for an M12 so I had to helicoil it.


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