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JohnJL's Avatar
 
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Supercharger carnage pics

Dramas continue...the upside is the motor itself (the parts I built) performed perfectly. The downside is the cause of my sudden loss of power, shredded belt, and inability to turn the motor over when a new belt was installed was a seized supercharger.

In hindsight it makes sense the supercharger quit. It never gave the power the manufacturer claimed which I now suspect is down to a bad lobe bearing. That would have explained the low boost and the contact with the casing.

The pics show the convex screw contacted the casing, scooping out material which then also gathered in the concave lobes. Not pretty.

The distributor thinks a straight replacement is the way to go. I am pushing for a higher-output unit. Both the 417 (1.7L per rev) and the 422 (2.2L per rev) are physically similar size and use the same intake and output manifolds so little/no changes to the rock-solid mounting system we designed. We maxed out at 11 psi at 6500rpm (13000 s/c rpm) and 316hp at the wheels. With the larger unit we should get to 15psi and 420hp at the wheels, which was my original goal.

So enjoy the carnage pics!







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Old 08-24-2009, 04:28 AM
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Good Lord! Did that get in your engine?
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Old 08-24-2009, 04:56 AM
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I hope not. No signs of bits in the intercooler, I'll pull the manifold too and check.
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Old 08-24-2009, 04:57 AM
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Thats tragic glad no damage to the motor itself yours must have 9 lives like mine, I will tip a fosters to your speedy repair. You dodged a major bullet.
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Old 08-24-2009, 05:11 AM
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Quote:
Originally Posted by gsmith660 View Post
Thats tragic glad no damage to the motor itself yours must have 9 lives like mine, I will tip a fosters to your speedy repair. You dodged a major bullet.

Make it a Sierra Nevada or a Harpoon and we're good!
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Old 08-24-2009, 05:32 AM
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Quote:
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Make it a Sierra Nevada or a Harpoon and we're good!
Cant get either of those here but I would if I could.
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Old 08-24-2009, 05:53 AM
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Ouch! I'd put a camera down the intake and spark plug holes before putting on the the new superchargers.
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Old 08-24-2009, 08:05 AM
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Damn John, as above was my first thought.

I guess this is the beauty of dealing with new parts and not piecing a 2nd hand system together. I wonder what liability the SC manufacturer would have if it had of destroyed your 20K+ engine, it's clearly a part failure if it was supplied the correct lubrication...

Best wishes for a speedy recovery, and 420hp!
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Old 08-24-2009, 11:11 AM
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Wow...now that's ugly!

Pull your plugs and look to see if there are any melted aluminum globules attached to the spark plug electrodes. Sometimes when you melt a piston this happens, maybe the same if you ingest little bits from your supercharger housing.

Buy the looks of the smearing, your supercharger housing must be made from simple cast 356 aluminum alloy. I would have hoped that the manufacturer would have at least hard anodized that sucker. But better yet, have gone with a higher silicon based alloy.

Kinda a moot point now I suppose!

Mark

Last edited by full quack; 08-24-2009 at 02:01 PM..
Old 08-24-2009, 12:03 PM
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Quote:
Originally Posted by spence88mph View Post
Damn John, as above was my first thought.

I guess this is the beauty of dealing with new parts and not piecing a 2nd hand system together. I wonder what liability the SC manufacturer would have if it had of destroyed your 20K+ engine, it's clearly a part failure if it was supplied the correct lubrication...

Best wishes for a speedy recovery, and 420hp!
Made in China? Sorry should have quoted the post below yours, +1 on the manu. making this right.
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76 Blazer also restored by me

Last edited by gsmith660; 08-24-2009 at 12:15 PM..
Old 08-24-2009, 12:12 PM
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Quote:
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Made in China? Sorry should have quoted the post below yours, +1 on the manu. making this right.

Made in Sweden.
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Old 08-24-2009, 03:48 PM
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Made in Sweden.
I was under the impression they made better stuff than that. Hope they make good on it.
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Old 08-24-2009, 04:32 PM
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I would have a really hard time assuming nothing made it in the motor with that kind of FOB. I would scope the cylinders and see what you have.
Old 08-24-2009, 05:42 PM
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That is incredible carnage. Hope none of it made it in the engine.
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Old 08-25-2009, 12:18 PM
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Well the debate with the retailer (hi-flow in Melbourne) and Autorotor in Sweden continues. However we are all maintaing decorum and I have a replacement unit in. This one's 15% bigger.




Its a big boy. For scale that's a 48kg/105lb ridgeback behind it.
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Old 10-21-2009, 05:17 AM
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Good news, John. Will it take much rework to get the new blower to fit?
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Old 10-21-2009, 04:25 PM
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Is that a Lysholm or Autorotor unit? I only heard the best about Lysholm hardware. (maybe Autorotor bought Lysholm?).

Regarding SC, it is possible that unit was a tad too small and subjected to revs/heat/load which thrashed the bearings and let lobes contact the housing.
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Old 10-22-2009, 04:19 AM
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Quote:
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Good news, John. Will it take much rework to get the new blower to fit?
I hope not! The rear sway-stays may need lengthening but the front mount, throttle and discharge plenums should all fit right on.
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Old 10-22-2009, 11:52 AM
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Quote:
Originally Posted by beepbeep View Post
Is that a Lysholm or Autorotor unit? I only heard the best about Lysholm hardware. (maybe Autorotor bought Lysholm?).

Regarding SC, it is possible that unit was a tad too small and subjected to revs/heat/load which thrashed the bearings and let lobes contact the housing.
Yes, I'd heard only the same. I was fortunately datalogging and the unit only had ~ 3 hours lazy dyno time and 3 laps around Wakefield park so it wasnt worn. I was datalogging at the time and my RPM was ~5000, which put the supercharger at 10,000 rpm, well short of its rated 13,000 continuous max according to the manufacturer.

I am not happy with the manufacturer or retailer now. At first they said something must have been sucked into the unit, but when I shipped it back (at a cost of $350!) they couldnt find anything. Now they are asking suspicious questions about the bypass system and throttle size. They are fishing for excuses not to warranty. Plus its taken 3 months to get a new unit in my hands. Autorotor bought Opcon.
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1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
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Old 10-22-2009, 11:57 AM
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Hmm...I don't think that's a Lysholm. Lysholm has "ribbed" cage. Autorotor has flat surface.

Lysholm:


Autorotor on the left, two different Lysholm on the middle/right:



I believe Lysholm is original Swedish supercharger. I was under impression that Autorotor wasn't Swedish. (I don't know much about superchargers though).
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Old 10-22-2009, 12:17 PM
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