Help fix your over heating problems! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Bigsyke · 08-02-2008, 01:37 PM

Going to keep this simple.

Your bleeder bolt's crush washer needs to be changed after every time you loosen the bolt. The bolt is an m6, however I can not find the copper crush washer anywhere. Coolant might not visibly leak from that spot if your torqued it down hard enough, but air WILL get in, causing bubbles in the coolant, and prevents coolant from being refilled into the radiator from the overflow tank. Fix is simple. AFter much searching, I couldnt find an m6 copper crush washer anywhere except in a honda fuel filter box.

#14 Galvanized Bonded Sealing Washer | Fastenal

These are availible at homedepot in the specialty bolt drawers. $.65 for a pack of 4.

Bring an m6 bolt, and get the ones (forgot which size) that fit very tightly around the bolt. I slapped these mofo's on and there was no leak, and coolant was always at a stable level.

These work great

Bigsyke · 08-03-2008, 02:06 PM

Update: about a hundred miles, poped the hood just after the rad fans came on @ 203*f. Usually I can see a path of coolant next to the bleeder screw.

Area was dry as a bone. These sealing washers work better than a copper crush IMO, hardly had to torque the bolt down, and even used a stainless alan button m6 bolt for more durrability.

Its great because if you lose one, just reach into the bag of 4 and grab another.

-For better sealing, put a very very small dab of silicone grease (pipe fittings department? needs to be >90% silicone) On the bottom rubber side adn smear it around. This will help seal the washer, and later on down the road make it easier to bleed.

08-02-2008, 01:37 PM	#1
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	Help fix your over heating problems! Going to keep this simple. Your bleeder bolt's crush washer needs to be changed after every time you loosen the bolt. The bolt is an m6, however I can not find the copper crush washer anywhere. Coolant might not visibly leak from that spot if your torqued it down hard enough, but air WILL get in, causing bubbles in the coolant, and prevents coolant from being refilled into the radiator from the overflow tank. Fix is simple. AFter much searching, I couldnt find an m6 copper crush washer anywhere except in a honda fuel filter box. #14 Galvanized Bonded Sealing Washer \| Fastenal These are availible at homedepot in the specialty bolt drawers. $.65 for a pack of 4. Bring an m6 bolt, and get the ones (forgot which size) that fit very tightly around the bolt. I slapped these mofo's on and there was no leak, and coolant was always at a stable level. These work great

08-03-2008, 02:06 PM	#2
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	Update: about a hundred miles, poped the hood just after the rad fans came on @ 203*f. Usually I can see a path of coolant next to the bleeder screw. Area was dry as a bone. These sealing washers work better than a copper crush IMO, hardly had to torque the bolt down, and even used a stainless alan button m6 bolt for more durrability. Its great because if you lose one, just reach into the bag of 4 and grab another. -For better sealing, put a very very small dab of silicone grease (pipe fittings department? needs to be >90% silicone) On the bottom rubber side adn smear it around. This will help seal the washer, and later on down the road make it easier to bleed.