Suzuki Quadracer HQ

LT500R Quadracer => LT500R - Engine => Topic started by: Rem28ga on July 02, 2013, 02:37:08 pm

Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Rem28ga on October 22, 2013, 01:36:23 pm
After I torqued them down last time they have yet to come loose again.  I took it out to the dunes and rode it a bit and they are still tight. Thanks for the follow-up.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: James Dandy on September 15, 2013, 08:48:09 pm
Just use a reglar ol nut. Then don matter how fur dem threads pop out, take em each hafe pas snug like yur changin' lil ol car tar. I like use a justbul wreench we call KY fit all. Then don matter fits sillymeters or incheS
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on September 15, 2013, 08:30:41 pm
Okay-
I am having issues with keeping the acorn nuts on my head tight (joke in there somewhere!). Anyway what are you guys using to keep them tightened to spec. I don't even have 2 hours on the top end yet and I am getting loose nuts! Have torqued them several times already.  I noticed coolant leaking so I checked them and most were loose. The top end was re-done by HPR so it is an o-ringed head. Any suggestions.
Thanks

Did you find out what was making your head nuts get loose?
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Nopick on September 15, 2013, 08:29:59 pm
I am not.  It was on there before.  I am going to give it a shot without the sealer.

Edit:  It was a pain to clean up!!
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on September 15, 2013, 08:28:36 pm
Is this the o-ringed stud you speak of??

(https://lh6.googleusercontent.com/-ojABWizN5P8/UjZ4IAtzY9I/AAAAAAAAODk/CRFMmr8jCtk/s800/20130915_215333.jpg)

Yes these are o-ringed studs. 

Why are you putting sealer on the o-rings?  If everything is done correctly you should not put any sealer on ANY o-ring.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Nopick on September 15, 2013, 08:18:34 pm
Is this the o-ringed stud you speak of??

(https://lh6.googleusercontent.com/-ojABWizN5P8/UjZ4IAtzY9I/AAAAAAAAODk/CRFMmr8jCtk/s800/20130915_215333.jpg)
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: WestTexasKing on July 04, 2013, 03:19:14 pm
I'm not discounting the benefits of it, it was intended to be a humorous connection between copper head gaskets and copper washers.
It's not very funny if I have to explain it though.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on July 04, 2013, 09:51:36 am
LOL, I can't believe you guys.
O-ringing a nut?  It was a joke!

It is not a joke, it is a good idea to seal the studs or nuts with o-rings.

O-rings around the head studs are OEM on some of the jet ski engines.

The stud placement has to be part of the original design because there has to be space to machine the appropriate groove around the stud.

Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: LT500Kid on July 03, 2013, 10:41:48 pm
Go back and read quadster twisted my words a little. I rung my nuts out and some stud came through and messed some stuff up!!!! +k2
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Buckeye513 on July 03, 2013, 07:58:16 pm
Dez I read that and got he got his nuts torqued on and a stud popped them for him.? Haha
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Dezsled on July 03, 2013, 07:19:22 pm
He maxed out the nut, bottoming it out damaging the acorn part
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Quadster on July 03, 2013, 07:11:42 pm
after I had my  head  rung when I torqued my  nuts down this stud popped the top off my nuts a little.
HUH?
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Chuckie25 on July 03, 2013, 02:26:15 pm
Make sure your torque wrench is set to 20 ft pounds standard and not metric. There was a buddy of mine had that same problem. He kept blowing his head gasket. Turns out he was actually torquing them to like 3 ft lbs lol

Worst comes to worst get a new torque wrench
i didnt know ft lbs came in a metric version!  :o
sorry i just couldnt help but giggle
 -T

Lmfao Yall caught my drift.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: WestTexasKing on July 03, 2013, 01:10:38 pm
20 N/m = 14.75 ft/lbs
20 in/lbs = 1.6667 ft/lbs


I could understand accidentally using N/m instead of ft/lbs, but in/lbs?
20 in/lbs is hand tight, bro.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: LT500Kid on July 03, 2013, 12:04:42 pm
They're getting nuts with the o-ringing. Tee hee
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: PCS on July 03, 2013, 11:57:41 am
Make sure your torque wrench is set to 20 ft pounds standard and not metric. There was a buddy of mine had that same problem. He kept blowing his head gasket. Turns out he was actually torquing them to like 3 ft lbs lol

Worst comes to worst get a new torque wrench
i didnt know ft lbs came in a metric version!  :o
sorry i just couldnt help but giggle
 -T
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: WestTexasKing on July 03, 2013, 10:42:33 am
LOL, I can't believe you guys.
O-ringing a nut?  It was a joke!
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Stpltn250r on July 03, 2013, 09:23:48 am
I run washers on my capped nuts but I put two dabs of silicone about the size of a bb and torque it down. haven't had one leak yet.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Mitch Keller on July 03, 2013, 09:04:56 am
The Acorn Nuts are on without the copper washers shown here in these pics
(http://i192.photobucket.com/albums/z183/erbe03/100_1189_zps8cd5af4e.jpg) (http://s192.photobucket.com/user/erbe03/media/100_1189_zps8cd5af4e.jpg.html)
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: LT500Kid on July 03, 2013, 08:28:54 am
on mine they just peeked through making the top of the nut look like its hinged on one side. barely noticeable cause the motor sits so high in the frame on the 500's
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: ken500r on July 03, 2013, 07:28:19 am
Glad i bought mine from mitch. Thanks Mitch (Y)
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Mitch Keller on July 03, 2013, 07:24:37 am
Thats why I selling the taller Acorn nuts, and my washers are 0.040" thick, how much are your stud threads hanging out?

Washers are .040" thick x 16mm OD x 8.4mm ID #110 Alloy Half Hard
Acorn Nuts are Plated & Flanged, 16.75mm Flanged Base -Smooth Bottom X 16.50mm tall, Head Size is 12mm (Wrench Size) 15.90mm deep.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: ken500r on July 03, 2013, 07:08:32 am
Man i wish i new that when i had my stuff at your shop i would of had you fix that. I plan on putting my quad back together this weekend. Can i just put an extra washers for now if i need too?
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on July 03, 2013, 06:50:00 am
after I had my cool head o ringed when I torqued my acorn nuts down the studs popped the top of the acorn nuts a little.

The studs have to be shortened to prevent this from happening on most LTs.   
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on July 03, 2013, 06:48:19 am
Coolant can seep up the holes in the head. The copper washers are suppose to seal this but sometimes they leak.

Copper washers are old tech, always leaking...you need to get your nuts O-ringed.

O-ringing the studs or nuts adds considerable cost to the job.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: LT500Kid on July 03, 2013, 04:22:10 am
after I had my cool head o ringed when I torqued my acorn nuts down the studs popped the top of the acorn nuts a little.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Rider414 on July 03, 2013, 03:20:36 am
Coolant can seep up the holes in the head. The copper washers are suppose to seal this but sometimes they leak.

Copper washers are old tech, always leaking...you need to get your nuts O-ringed.

I was talking about a O-Ring'd head with the copper washers under the acorn nuts.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: WestTexasKing on July 02, 2013, 11:10:31 pm
Coolant can seep up the holes in the head. The copper washers are suppose to seal this but sometimes they leak.

Copper washers are old tech, always leaking...you need to get your nuts O-ringed.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: MotorGeek - Jerry Hall on July 02, 2013, 10:46:54 pm
I didnt think you had to torque the orings head AS  tight.You might have pinch your orings.I thought you just got them tight and use some silicone on them. That might be your problems their

Do not use any type of sealer on the o-rings. 

Any and every head should be torqued to keep the bore round and minimize distortion.  The head bolts do not have to be tight to make the o-rings seal but they have to be tight enough not to vibrate loose.  18 to 20 ft-lbs should be the proper torque spec.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Rider414 on July 02, 2013, 08:13:29 pm
Coolant can seep up the holes in the head. The copper washers are suppose to seal this but sometimes they leak. I was told to use some sealant between the washer surfaces.

I have the same set-up as you and not issues so far. Are you using sealant? 
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: LT250RWV on July 02, 2013, 03:16:46 pm
I didnt think you had to torque the orings head AS  tight.You might have pinch your orings.I thought you just got them tight and use some silicone on them. That might be your problems their
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Chuckie25 on July 02, 2013, 03:10:15 pm
Make sure your torque wrench is set to 20 ft pounds standard and not metric. There was a buddy of mine had that same problem. He kept blowing his head gasket. Turns out he was actually torquing them to like 3 ft lbs lol

Worst comes to worst get a new torque wrench
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Rem28ga on July 02, 2013, 03:00:44 pm
I have double copper washers under each nut which was recommended. I am torquing to 20lb. ft as the manual states.
Title: Re: Acorn nuts on head keep coming loose '87 zilla
Post by: Zilla273 on July 02, 2013, 02:48:42 pm
what are u torqueing them too, also make sure the nuts are not bottoming out before contacting the head 2c I didn't have any issues keeping mine tight
Title: Acorn nuts on head keep coming loose '87 zilla
Post by: Rem28ga on July 02, 2013, 02:37:08 pm
Okay-
I am having issues with keeping the acorn nuts on my head tight (joke in there somewhere!). Anyway what are you guys using to keep them tightened to spec. I don't even have 2 hours on the top end yet and I am getting loose nuts! Have torqued them several times already.  I noticed coolant leaking so I checked them and most were loose. The top end was re-done by HPR so it is an o-ringed head. Any suggestions.
Thanks