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nedloh312

Major Diff problems..

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4 times in the last 3 months, the bolts that hold the diff to the mustache bar have completely snapped...

 

The bolts come loose after normal driving to and from work, no circuit racing or anything haha ^^

 

Anyways, these are high tensile steel bolts so they don't just break easily as you know... Don't know what to say? I am going to replace the 'Differential Mount Insulator' but i have seen some posts where people have custom mounts to replace the chain-over-diff method..

 

So yer, any ideas?

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And this time everyone, please don't go on about Lurch and a 'driveway warranty'...

 

I don't do burnouts

I don't drift

I don't race people

I don't go overly fast

I don't do red light drags

I don't go off road

 

 

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You mention you use High Tensile bolts...and I dont mean the ones in the grab paks you buy from Repco, Autopro and the like..

 

I assume you mean 4.6 or 8.8 black, this number will be cast raised on the bolt head

 

The stress and load force required to sheer either one of these bolts is.... ENORMOUS....

 

Buy either of the above, prefer the 8.8 , some flat faced hardened washers, check the OD of your mount holes for the correct sizing, ( they may be worn or oval with so many failures, if so re drill and go oversize) use Nyloc nuts and thread lock, you should have a minimum of three threads shy of the nut and torque to 59 to 78 NM and see how you go...

 

NB: If you have any problems getting the bolts, drop me a PM

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Hi, these aern't the crap ones from cheapo shops, they are from my dad whos a bigwig at country energy.. These bolts are used when building the transformers...

 

Put the bolts in with 262 threadlock and left to cure for 24 hours and then put the nyloc nuts on and put as hard as possible... Have done that each time...

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Hi, these aern't the crap ones from cheapo shops, they are from my dad whos a bigwig at country energy.. These bolts are used when building the transformers...

 

Put the bolts in with 262 threadlock and left to cure for 24 hours and then put the nyloc nuts on and put as hard as possible... Have done that each time...

 

Yeah OK

 

But what kind of bolts are they and what is cast stamped on the heads..

 

Bolts are like chain, oil etc etc each has a different application and use

 

 

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I asked him and he said they are stainless steel bolts not high tensile

 

304 grade

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I asked him and he said they are stainless steel bolts not high tensile

 

304 grade

 

;)

 

Well theres your problem my friend... in short. they are c#$p for what you need

 

As before, if you cant get what you need drop me a PM

 

You must have someone watching over you.....with that many issues with your diff coming adrift

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;)

 

Well theres your problem my friend... in short. they are c#$p for what you need

 

As before, if you cant get what you need drop me a PM

 

You must have someone watching over you.....with that many issues with your diff coming adrift

 

Okay, so i need to get high tensile bolts, re-drill both the mustache bar and the diff cover and then try again?

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:)

 

Yep

 

Give that a go and I think youll have solved your problems, remember to match the bolts to the holes and have a bit of extra length on the bolts....

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Not sure of the Wharf name.....

 

 

I was a Project Manager during Construction back in the late 80's and lived in Port Mac for about 2 years after so Ive got a bit of a soft spot for the place....

 

:)

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ah kk :P  It's a bit of a hole when your my age lol...

 

LOL

 

I can imagine, there wasnt a lot happening when I was there, at least youve a sweet ride to work on......

 

:)

 

 

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There was a theme park that was awesome, but some company bought it because it was too loud next to there resort and they destroyed it...

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There was a theme park that was awesome, but some company bought it because it was too loud next to there resort and they destroyed it...

 

Oh well........sign of the times I guess

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Okay, i did what you said.. It's the diff mount, had it on a hoist today and the diff mount is so bad it's almost metal on metal, there is 2" of travel... I could push the diff 2inches up before the chain stopped it... Going to order a new one from nissan...

 

Thanks for the help :) Also, the bolts you suggested were what we first used when it happened the first time lol

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u may want to tighten that chain so u dont have 2" movement otherwise the new mount will have the same faith as the old one in very short time.

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i used a solid mount like that for my r200 install works fine but diff does clunk with it in

and since then have read concerns about the fact your relying on one bolt seen pics of thes mounts ripping out

leaning towards installing a ron tyler style mount diff mount mounts diff from above with insulated mount

post-112-144023525757_thumb.jpg

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I have seen pics of what solid diff mounts can do after a long time.. there was a pic of the chassis that had caved in on itself from the torture of a solid mount...

 

Anyways, it arrives on Friday night so it will be in by Saturday lunchtime.... Then will be able to drive without pussyfooting hearing clunks whenever i shift... It's been off the road for awhile becuase i was afraid something was going to get damaged lol :P

 

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