sonic
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| posted on 28/5/16 at 06:37 PM |
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Top hat loose on my MK Indy!, check them guys
I jacked my car up to day to take the wheels off and clean them, near side front top hat on the top wishbone popped out!
put it back it and the bolt felt tight but wasn't nipping it tight enough, long extension bar and its tight now. I then went round every nut and
bolt I could find to check, luckily no more loose one found.
Check them guys it could have been fatal if it had come out at speed.
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daniel mason
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| posted on 28/5/16 at 06:44 PM |
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I keep checking the top and bottom upright bolts on the Jedi. The lower front seems to work its way loose regularly
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ian locostzx9rc2
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| posted on 28/5/16 at 07:09 PM |
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I know of few people have drilled an extra hole to put another bolt in them .
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sonic
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| posted on 28/5/16 at 07:29 PM |
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I was just thinking why can't I drill straight through the middle of the casting and tophat, but a bolt straight through.
it cannot come out them, or will it weaken the casting?
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ian locostzx9rc2
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| posted on 28/5/16 at 07:32 PM |
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As per last post that's what a lot of people have done
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CosKev3
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| posted on 28/5/16 at 07:33 PM |
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As above,you should really drill through and fit a bolt as a secondary securing point.
IIRC someone did say some IVA testers check for a secondary fitting,as on a Sierra as standard there was no way the strut could come out of the hub
even if the bolt came loose.
I recently had mine come loose,I think yours will again as the cast hub does not clamp onto them tight enough.
I welded some seams down the mushroom then with the hub spread open with a chisel I ground back the welds until the mushroom was a nice tight fit into
the hub,then once I pulled the chisel out the mushroom was already held in pretty tight.
Then once the bolt was tightened up its much better 
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sonic
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| posted on 28/5/16 at 07:42 PM |
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I think I am going to drill straight through the middle of mine tomorrow and fit a bolt through, it cannot go anywhere then.
More I think about it the more I think it could have been fatal if that had popped out while giving it some beans over a hump on the road.
Thanks
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CosKev3
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| posted on 28/5/16 at 08:09 PM |
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I had a bolt with nylock on mine and it still came loose,the bolt won't hold it tight,it's just a fitting incase the main bolt comes loose
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Irony
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| posted on 28/5/16 at 09:39 PM |
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Mine came came out on a early road test. Odd to see the wheel flopping about about. I was doing less than 10mph at the time.
Secondary fixing is a requirement for IVA
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Toprivetguns
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| posted on 29/5/16 at 06:41 AM |
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Drill and tap - insert bolt a with loctite.
Only drive as fast as your angel can fly... !
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Bluemoon
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| posted on 29/5/16 at 07:09 AM |
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Not had an issue with mine; but a secondary locking mechanism is a good idea. Mine were tight even with the pinch-bolt undone.. Fresh Nyloc's
plus tell tail white paint and correct torque setting is all I have at the moment.
Note: with the McPherson strut there is a lot of shock loading on this part and the whole weight of the car... in the Indy only sideways loading from
cornering loads.
Dan
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SJ
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| posted on 29/5/16 at 07:52 AM |
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quote:
Not had an issue with mine; but a secondary locking mechanism is a good idea. Mine were tight even with the pinch-bolt undone.
+1
Another job on the list!
I got mine MOTd on Friday though so back on the road now!
I'll apologise in advance for any negative effect this has on the weather.
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hazardpro
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| posted on 24/9/16 at 08:59 PM |
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could someone please post a pic of the area please (kit car newbe alert)!
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CosKev3
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| posted on 24/9/16 at 09:20 PM |
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If you have Sierra front uprights it's the piece fitted into the big hole at the top of the upright where the macpherson strut went in on the
Sierra.
Your top balljoint is mounted into the 'mushroom'
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CosKev3
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| posted on 24/9/16 at 09:25 PM |
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Description
In that pic it's the round silver part in the Sierra front upright at top of pic
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hazardpro
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| posted on 24/9/16 at 10:13 PM |
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thanks guys
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flanders
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| posted on 3/10/16 at 09:41 AM |
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anyone got a picture of the secondary bolt fitted?
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CosKev3
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| posted on 3/10/16 at 10:29 AM |
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quote:
Originally posted by flanders
anyone got a picture of the secondary bolt fitted?
You just drill straight through upright and mushroom then use a bolt with a nylock
Will take a pic of mine next time I'm in garage
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coozer
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| posted on 3/10/16 at 10:55 AM |
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I had to drill and bolt for the SVA back in the day...
Drilled a 7mm hole, tapped it m8 and put a nyloc on the back for added security.
1972 V8 Jago
1980 Z750
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flanders
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| posted on 3/10/16 at 12:55 PM |
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cheer lads!
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flanders
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| posted on 23/2/17 at 10:34 AM |
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Kev any chance of that picture? ive got my suspension fully stripped off at the moment so its an ideal time to add the bolt. Iv got an idea in my head
of how its done but i want to be 100%
on a side note, the ball joint mounting hole in the mushroom is offset, can i take advantage of this and introduce more castor angle?
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CosKev3
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| posted on 23/2/17 at 11:50 AM |
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Yeah will try and remember......... 
Ref castor I'm no expert,but have read on here that the mushroom can't alter it.
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flanders
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| posted on 23/2/17 at 12:18 PM |
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Thank so I've been waiting patiently 
Ah ok. So any idea why the top hat has the offset hole? Camber perhaps?
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Matth93
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| posted on 23/2/17 at 04:19 PM |
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The hole that the ball joint bolts into on the mushroom should be as far forward as you can get it (so leaning the top of the hub backwards) to give
you some castor although on my car it doesn't give enough to get self centering on the steering
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Camber Dave
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| posted on 23/2/17 at 05:33 PM |
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Rotating a mushroom with an offset ball joint will not change the CASTOR
This is arranged by the set back of the upper and lower ball joints.
Rotating the mushroom moves the hub not the position of the ball joint.
It will enable you to fine tune the CAMBER
But remember it will affect the BUMP STEER by raising or lowering the steering arm.
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