Idler Sprocket threads won't hold a helicoil. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

04BlueBeach · 11-14-2015, 02:37 PM

I need some opinions. When I bought the car there was a helicoil installed for the idler sprocket. I replaced a head gasket and had to replace it. Worked fine. Now I'm rebuilding the engine and am trying to put a new helicoil in. The problem is there isn't enough threads left in the head to hold the coil! Every time I try to torque the idler bolt down it pulls the coil right out.

I even put a bunch of lock tight on the coil and let it dry. I don't want to replace the head because I just had $500 worth of work done on it. Do I have any other options? The only option I can see is taking it to the machine shop where I had the work done at and see if they can put a sleeve or something in. Its a 1997 240sx KA24DE.

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DennisC · 11-14-2015, 03:16 PM

Timesert oversize

KAT-PWR · 11-14-2015, 05:59 PM

Quote:

Originally Posted by DennisC

Timesert oversize

.
Nailed it

04BlueBeach · 11-14-2015, 09:21 PM

Ahh thank you! I take it that is comes in a Kit?

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11-14-2015, 02:37 PM	#1
04BlueBeach Join Date: Jun 2014 Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Idler Sprocket threads won't hold a helicoil. I need some opinions. When I bought the car there was a helicoil installed for the idler sprocket. I replaced a head gasket and had to replace it. Worked fine. Now I'm rebuilding the engine and am trying to put a new helicoil in. The problem is there isn't enough threads left in the head to hold the coil! Every time I try to torque the idler bolt down it pulls the coil right out. I even put a bunch of lock tight on the coil and let it dry. I don't want to replace the head because I just had $500 worth of work done on it. Do I have any other options? The only option I can see is taking it to the machine shop where I had the work done at and see if they can put a sleeve or something in. Its a 1997 240sx KA24DE. Sent from my 0PJA2 using Tapatalk

11-14-2015, 03:16 PM	#2
DennisC Zilvia Junkie Join Date: Dec 2010 Location: Elk Grove Posts: 581 Trader Rating: (9) Feedback Score: 9 reviews	Timesert oversize __________________

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11-14-2015, 09:21 PM	#4
04BlueBeach Join Date: Jun 2014 Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Ahh thank you! I take it that is comes in a Kit? Sent from my 0PJA2 using Tapatalk