My driver's side motor mount holes 2 out of 3 are stripped. I have experience using taps which was my first idea, however, I couldn't enlarge the holes of the motor mount even with a drill press because the metal is too strong. So I figured I try the helicoils.

Now, I have the helicoil inserts but do I need an install kit to use them? How do you insert them? Btw, the original bolts were m10 x 1.25, and I have m10 x 1.5 helicoils with new bolts matching that size.

 

the heli-coil kit should come with a install tool allong with the proper sized tap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">the heli-coil kit should come with a install tool allong with the proper sized tap.

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Okay, I didn't get the kit, only the helicoil itself. I do have the correct size tap though for the helicoil, can I sub something for the install tool? I'm assuming you drill the hole out, tap it, then insert the helicoil, correct? Wondering if I can use something other than the install tool to get it in there....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nisif &raquo;</TD></TR><TR><TD CLASS="quote">... I do have the correct size tap though for the helicoil...</TD></TR></TABLE>
Are you sure? You know that's not a normal size tap, right? It's a bastard size that matches the outside of the coil.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nisif &raquo;</TD></TR><TR><TD CLASS="quote">... I'm assuming you drill the hole out, tap it, then insert the helicoil, correct? Wondering if I can use something other than the install tool to get it in there....</TD></TR></TABLE>The install tool inserts thru the coil, and engages the tab that comes across the bottom. You could make the tool by taking a rod sized to fit inside the coil. Cut a slot across the end of that rod, so you can fit the tool in thru the middle of the coil & the tab of the coil fits into the slot of the tool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">
Are you sure? You know that's not a normal size tap, right? It's a bastard size that matches the outside of the coil.
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I assumed I had the correct size tap, the helicoil is m10 x 1.5, that's the size tap I have. I'll probably just buy the set tomorrow.... stripped holes suck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nisif &raquo;</TD></TR><TR><TD CLASS="quote">

I assumed I had the correct size tap, the helicoil is m10 x 1.5, that's the size tap I have. I'll probably just buy the set tomorrow.... stripped holes suck </TD></TR></TABLE>

NOOO.....the tap for the heli-coil is diffrent than the one you have.... you NEED the kit.....it comes with the proper tap and insallation tool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nisif &raquo;</TD></TR><TR><TD CLASS="quote">

I assumed I had the correct size tap, the helicoil is m10 x 1.5, that's the size tap I have. I'll probably just buy the set tomorrow.... stripped holes suck </TD></TR></TABLE>
M10x1.5 is the size of the inside of the coil, to match the original size of the hole. If it's stripped, the hole is already bigger than that.

The special HeliCoil tap has the matching pitch (1.5 threads/mm), but the diameter is bigger to match the OUTSIDE of the coil.

 

are you talking about the 3 holes that are on the block that the motor mount bolts too? if so it would be better having thread inserts installed exspecially if you plan on running decent power. mine stripped and i did heliacoils and they came out. had a machine shop install the thread inserts and never had a problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">

NOOO.....the tap for the heli-coil is diffrent than the one you have.... you NEED the kit.....it comes with the proper tap and insallation tool.</TD></TR></TABLE>

I understood, just thought I had the right tap originally. I went ahead and bought the kit. It was pretty straightforward, fortunately it worked out well. thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nisif &raquo;</TD></TR><TR><TD CLASS="quote">... It was pretty straightforward, fortunately it worked out well.</TD></TR></TABLE> Good job.