Anyone used a Stomski jig to remove 996 exhaust studs?
Discussion
A quick update:
1) Back in the history file a previous owner bought a pair of DesignTek manifolds and sports cats (nearly £2k)and got their local OPC to fit them whilst also replacing various breather pipes, the RMS, and bits and bobs which they removed the engine for. The OPC installed the lot with crap steel bolts that rusted away, whether those fixings came with the parts the owner gave them or was their own decision from the stores parts bin, I can't say.
2) The Stomski tool is very simple to use "with care", but isn't fool proof. You still have the fine tune the alignment by eye to be bang on central (very easy to do), and you have to be patient during the drilling and tapping and show mechanical sympathy. It is up to you to decide where to mark the drill bits and how far you want to drill.
3) The tool isn't cheap, but it is very comprehensive and extremely well engineered. Poundland spanners it isn't! It comes in a great case, and is "confidence inspiring" to tackle the job, if that makes sense. I would bet money that anyone halfway through this task with a car in bits and trying to drill out snapped studs would suddenly find it a bargain!
4) Earlier tonight I jacked up the car to see if I had any leaks or if anything was coming loose - all tight as a drum!
1) Back in the history file a previous owner bought a pair of DesignTek manifolds and sports cats (nearly £2k)and got their local OPC to fit them whilst also replacing various breather pipes, the RMS, and bits and bobs which they removed the engine for. The OPC installed the lot with crap steel bolts that rusted away, whether those fixings came with the parts the owner gave them or was their own decision from the stores parts bin, I can't say.
2) The Stomski tool is very simple to use "with care", but isn't fool proof. You still have the fine tune the alignment by eye to be bang on central (very easy to do), and you have to be patient during the drilling and tapping and show mechanical sympathy. It is up to you to decide where to mark the drill bits and how far you want to drill.
3) The tool isn't cheap, but it is very comprehensive and extremely well engineered. Poundland spanners it isn't! It comes in a great case, and is "confidence inspiring" to tackle the job, if that makes sense. I would bet money that anyone halfway through this task with a car in bits and trying to drill out snapped studs would suddenly find it a bargain!
4) Earlier tonight I jacked up the car to see if I had any leaks or if anything was coming loose - all tight as a drum!
Post excavation here, mine are very rusty, would the OP be willing to sell the tool or rent it with a suitable deposit?
Also Fyi for anyone else, while apart replace the bolts with studs, there is actually a titanium stud & nut kit available for £115 somewhere only, though correct equivalent generic Ti studs & nuts can be had for half that from any fixings supplier online.
Following with interest...
Beer
Also Fyi for anyone else, while apart replace the bolts with studs, there is actually a titanium stud & nut kit available for £115 somewhere only, though correct equivalent generic Ti studs & nuts can be had for half that from any fixings supplier online.
Following with interest...
Beer
I had the same problem and looked at the jig but opted to make a bush up myself to guide the various side pilot drills into the broken studs (7 off) I did it on my back in the winter and not a pleasant job. Every mobile "Thread Dr" said they needed the car on a ramp and if i could of got access to a ramp it would have been fairly Easy. I was quoted basically £100 / bolt.
I Started with a decent set of 3.0mm bits from Toolstation and then went to 3.5mm and 5mm then 6.8 mm that i got off flea bay with a extra long shank.
Once removed and retaped i opted to fit M8 x 40 mm Stainless steel studs with thread lock that have a 3mm allen key that can be used to hold the stud in situ when removing the manifolds and then used M8 brass nuts with washer's and copper slip that can be sourced from flea bay at a reasonable cost.
Given the location the bolts used by Porsche really should have been a service iten evey major service as the heads just rust away.
Either way good luck
I Started with a decent set of 3.0mm bits from Toolstation and then went to 3.5mm and 5mm then 6.8 mm that i got off flea bay with a extra long shank.
Once removed and retaped i opted to fit M8 x 40 mm Stainless steel studs with thread lock that have a 3mm allen key that can be used to hold the stud in situ when removing the manifolds and then used M8 brass nuts with washer's and copper slip that can be sourced from flea bay at a reasonable cost.
Given the location the bolts used by Porsche really should have been a service iten evey major service as the heads just rust away.
Either way good luck
Bullet-Proof_Biscuit said:
Post excavation here, mine are very rusty, would the OP be willing to sell the tool or rent it with a suitable deposit?
Also Fyi for anyone else, while apart replace the bolts with studs, there is actually a titanium stud & nut kit available for £115 somewhere only, though correct equivalent generic Ti studs & nuts can be had for half that from any fixings supplier online.
Following with interest...
Beer
You can also rent the kit on the link posted above for £50 with £150 deposit.Also Fyi for anyone else, while apart replace the bolts with studs, there is actually a titanium stud & nut kit available for £115 somewhere only, though correct equivalent generic Ti studs & nuts can be had for half that from any fixings supplier online.
Following with interest...
Beer
https://www.ebay.co.uk/itm/M8-x-40-Manifold-Studs-...
£15 c/w M8 brass nuts and washers as opposed to £115 in the link above
£15 c/w M8 brass nuts and washers as opposed to £115 in the link above
Holy thread resurrection batman! I’ve now got my 996 up on the 2 poster (what else is a chap gonna do in lock down!).
Anyone got a jig to sell/ rent me? Happy to either buy and sell on or rent it for beer tokens.
I noticed TDF no longer offer the TI studs on account of everyone failing to send jigs back. I have messaged PPBB to see if he has any new old stock.
In total I have 7 snapped, 4 out cleanly and one still in with a rounded head. Any tips on getting the the snapped ones out without drilling? Possible? Or just drill it out back up to 6.8mm and tap it again?
Anyone got a jig to sell/ rent me? Happy to either buy and sell on or rent it for beer tokens.
I noticed TDF no longer offer the TI studs on account of everyone failing to send jigs back. I have messaged PPBB to see if he has any new old stock.
In total I have 7 snapped, 4 out cleanly and one still in with a rounded head. Any tips on getting the the snapped ones out without drilling? Possible? Or just drill it out back up to 6.8mm and tap it again?
Jesus they really are badly designed aren't they!Rossco196x said:
https://www.ebay.co.uk/itm/M8-x-40-Manifold-Studs-...
£15 c/w M8 brass nuts and washers as opposed to £115 in the link above
They are Ti in the above link with correct shouldered nuts, and it's better to use studs with separate threads top and bottom as you can tighten the shoulder of the short thread hard up against the head, rather than bottom it out in the blind hole (which might back up against a water jacket etc)£15 c/w M8 brass nuts and washers as opposed to £115 in the link above
eltax91 said:
Holy thread resurrection batman! I’ve now got my 996 up on the 2 poster (what else is a chap gonna do in lock down!).
Anyone got a jig to sell/ rent me? Happy to either buy and sell on or rent it for beer tokens.
I noticed TDF no longer offer the TI studs on account of everyone failing to send jigs back. I have messaged PPBB to see if he has any new old stock.
In total I have 7 snapped, 4 out cleanly and one still in with a rounded head. Any tips on getting the the snapped ones out without drilling? Possible? Or just drill it out back up to 6.8mm and tap it again?
I'm also after a jig, happy to rent from yourself or buy after. Anyone got a jig to sell/ rent me? Happy to either buy and sell on or rent it for beer tokens.
I noticed TDF no longer offer the TI studs on account of everyone failing to send jigs back. I have messaged PPBB to see if he has any new old stock.
In total I have 7 snapped, 4 out cleanly and one still in with a rounded head. Any tips on getting the the snapped ones out without drilling? Possible? Or just drill it out back up to 6.8mm and tap it again?
Per above considering buying a factory manifold and chopping the flange off to make a jig, would need to get the bushes turned by someone though. Mine are terrible and I expect all 12 to break ffs
Bullet-Proof_Biscuit said:
I'm also after a jig, happy to rent from yourself or buy after.
Per above considering buying a factory manifold and chopping the flange off to make a jig, would need to get the bushes turned by someone though. Mine are terrible and I expect all 12 to break ffs
I’ve not yet managed to find anyone with one. If you come across one let me know! My father In law is a well connected retired mechanical engineer, so once lock down is over he will doubtless be roped in to help. Maybe he can come up with something or perhaps he can have something made for mePer above considering buying a factory manifold and chopping the flange off to make a jig, would need to get the bushes turned by someone though. Mine are terrible and I expect all 12 to break ffs
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